ATX MIB REFERENCE GUIDE 9031872-01
NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
Notice FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
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CONTENTS CHAPTER 1 INTRODUCTION 1.1 Document Conventions ............................................................... 1-2 1.2 Related Documentation ............................................................... 1-3 1.3 Getting Help................................................................................. 1-4 1.4 SNMP Primitives.......................................................................... 1-4 1.5 MIB Primitive Types.....................................................................
Contents CHAPTER 4 TOKEN RING MIB 4.1 Token Ring Group........................................................................4-1 4.1.1 Token Ring Interface Table .........................................4-1 4.1.2 Token Ring Statistics Table .........................................4-4 4.1.3 Token Ring Timer Table ..............................................4-7 4.1.4 Token Ring Tests.........................................................4-7 4.1.5 Token Ring Chipsets .....................................
Contents CHAPTER 8 PPP MIB 8.1 PPP Link Control Table ............................................................... 8-1 8.2 PPP IP Table ............................................................................... 8-9 8.3 PPP Bridge Support .................................................................. 8-11 CHAPTER 9 APPLETALK MIB 9.1 LLAP Group................................................................................. 9-1 9.2 AARP Group........................................................
Contents 10.3.18 Cabletron IPX Group ...............................................10-81 10.3.18.1 SIPXIF Table ........................................10-81 10.3.18.2 Route Table..........................................10-83 10.3.18.3 SAP Table ............................................10-84 10.3.19 Router Discovery Group ..........................................10-85 10.3.20 IP Multicasting Group ..............................................10-87 10.3.20.1 IP Multicast Neighbor Table ..............
CHAPTER 1 INTRODUCTION This manual is for system administrators responsible for configuring, monitoring, and maintaining the ATX. Much of the configuration of the ATX needs to be done using an SNMP-based network management station. This manual contains the SNMP MIB variables you may need to configure, monitor, and manage your unit. You should use this manual with the ATX User Guide and with the documentation provided with your NMS. The contents of each chapter are described below.
Chapter 1: Introduction 1.1 DOCUMENT CONVENTIONS The following conventions are used in presenting information in this manual: LCM commands, prompts, and information displayed by the computer appear in Courier typeface. NOTE TIP ! Note symbol. Calls the reader’s attention to any item of information that may be of special importance. Tip symbol. Conveys helpful hints concerning procedures or actions. Caution symbol. Contains information essential to avoid damage to the equipment.
Related Documentation 1.2 RELATED DOCUMENTATION You may need to refer to the following documentation: • ATX User Guide – contains installation, configuration, and management instructions for the ATX. It also describes how to use the Local Console Manager (LCM), which is a non-intelligent terminal interface to the unit. If you need internetworking reference material, you may find the following books helpful: • Interconnections, Bridges and Routers, Radia Perlman, Addison Wesley © 1992.
Chapter 1: Introduction 1.4 SNMP PRIMITIVES The major software interface between the NMS and ATX consists of one simple mechanism – the exchange of SNMP (Simple Network Management Protocol, RFC 1157) datagrams over any available physical media. The following restrictions apply: • All datagrams must obey SNMP format. • All datagrams must be sent via UDP and IP. Thus, all datagrams will have UDP and IP headers. • Datagrams may be sent over any of the following physical media: - Ethernet/802.
MIB Primitive Types 1.5 MIB PRIMITIVE TYPES The MIB definitions in this document may reference the primitive types that are described in the Structure and Identification of Management Information for TCP/IP-based Internets, RFC 1155. RFC 1155 is based on the Specification of Abstract Syntax Notation One, ASN.1. The primitive types are described in Table 1-1.
Chapter 1: Introduction 1.6 USER FUNCTIONS The SNMP primitives may be used to accomplish the following functions: • Obtain the unit’s current value of certain parameters - the NMS uses the GetRequest or GetNextRequest PDU, and the unit responds with a GetResponse PDU. If the NMS issues a GetRequest for an unsupported parameter, the unit sends a GetResponse with a noSuchName ErrorStatus1. If the NMS issues a GetNextRequest for an unsupported parameter, the unit skips to the next object.
Navigating Through the MIB Tree Structure Many parameters are described by existing Management Information Base (MIB) documents. The meanings of those parameters are not always implemented exactly by the unit; instead, the parameters are treated as best as can be correlated to the unit’s parameters.
Chapter 1: Introduction iso 1 org 3 dod 6 internet 1 mgmt 2 private 4 experimental 3 enterprise 1 mib-2 1 system 1 interfaces 2 Figure 1-1 Cabletron 97 add trans 3 ip 4 ...... rdbmsMIB 39 MIB Hierarchical Structure Table 1-2 provides the branch structure that is under MIB-II. To reach any of the MIB-II objects you would start with the prefix 1.3.6.1.2.1. For example, to reach an object in the system group, you would start with 1.3.6.1.2.1.1.
Navigating Through the MIB Tree Structure Table 1-2 Branches Under MIB-II MIB-II Group Number (1.3.6.1.2.1.
Chapter 1: Introduction The get command would look like: get 1.3.6.1.4.1.97.2.9.2.0 At the beginning of each chapter in this Reference Guide, the prefix for each MIB group is provided. To calculate the specific MIB variable, you add the specific object ID to the prefix for that MIB group. 1.8 TFTP TFTP (Trivial File Transfer Protocol, RFC 1350) is used for: • Distribution of new software.
Additional Interfaces 5. Tell TFTP to transfer the second file, (dnld_software). This transfer should take approximately six minutes. NOTE If the above TFTP sequence is abnormally terminated, there is no cause for alarm, since the ATX maintains a back-up set of software, and the ATX will not use the incomplete new software. 1.8.2 Retrieving All Parameters TRTP is used for retrieval of the parameters of an ATX, as follows: 1. Start TFTP.
Chapter 1: Introduction 1-12 ATX MIB Reference Guide
CHAPTER 2 TCP/IP MIB-II The ATX supports the TCP/IP MIB-II, as defined by Management Information Base for Network Management of TCP/IP-Based Internets MIB-II, RFC 1213 (K. McCloghrie, editor), dated March 1991. The MIB is divided into groups of parameters. The individual groups are described in the subsections below. You may want to refer to the actual TCP/IP MIB, since this document paraphrases the standard MIB in order to provide ATX-related descriptions.
Chapter 2: TCP/IP MIB-II HT the name TURBO followed by 24 characters which are all blanks. If the board is removable, then the 24 characters contain a part number and serial number. If the board is revocable and has been removed, then the name is NONE followed by 25 blanks. Hn the name of each IOM followed by a 24 character manufacturing code (which contains a part number and serial number). Each IOM name is padded with blanks, if necessary, so that it is 5 characters. The IOM names are the following.
Interfaces Group sysName DisplayString Read-Write {system 5} An administratively-assigned name for this node. By convention, this is the node’s fully qualified domain name. The LCM prompt consists of sysName followed by “>”. (LCM is a non-intelligent terminal interface that can be used to configure and monitor status for the unit.) sysLocation DisplayString Read-Write {system 6} The physical location of the unit. sysServices Integer Read-Only {system 7} The sum of the services supported by the unit.
Chapter 2: TCP/IP MIB-II ifEntry Not-Accessible {ifTable 1} A set of objects for an interface entry. The individual components are described below. ifIndex Integer Read-Only {ifEntry 1} The port number, beginning with 1 for the first port. This number always matches the instance of the ifEntry. For example, {ifIndex 3} contains the value “3”. ifDescr DisplayString Read-Only {ifEntry 2} A textual description of the port. This contains the “Hn” of the port’s IOM, as described for the sysDescr parameter.
Interfaces Group ifSpeed Integer Read-Only {ifEntry 5} The port’s estimated MAC-level bandwidth, in bits per second. The bandwidth will be in the range 1,200 - 100,000,000. ifPhysAddress Physical Address Read-Write {ifEntry 6} The MAC address of the port. For the UART and WANs, this field should be an octet string containing a single octet with a value of hexadecimal FF. ifAdminStatus Integer Read-Write {ifEntry 7} The desired state of the port, i.e.
Chapter 2: TCP/IP MIB-II ifInOctets Counter Read-Only {ifEntry 10} The total number of bytes received on the port, counting the MAC header and FCS, but not counting the bytes in packets that were rejected due to hardware errors. All counters are 32 bit wide wrap-around counters which can only be reset by restarting the port or by rebooting the unit. ifInUcastPkts Counter Read-Only {ifEntry 11} The number of non-multicast packets received by the port, regardless of the packet’s outcome (i.e.
Interfaces Group ifOutUcastPkts Counter Read-Only {ifEntry 17} The number of non-multicast packets transmitted out the port, regardless of whether or not hardware transmission errors were encountered. ifOutNUcastPkts Counter Read-Only {ifEntry 18} The number of multicast packets transmitted out the port, regardless of whether or not hardware transmission errors were encountered.
Chapter 2: TCP/IP MIB-II • {fddi} - for FDDI ports (fddi is defined later, as {transmission 15}). • {dot5} - for Token Ring ports (dot5 is defined later, as {transmission 9}). 2.3 ADDRESS TRANSLATION GROUP at {mib-2 3} The TCP/IP Address Translation Group parameters are minimally supported (i.e., for any parameter in this group, the unit returns a GetResponse with a noSuchName ErrorStatus).
IP Group 2.4 IP GROUP ip {mib-2 4) The TCP/IP IP Group parameters are described below. ipForwarding Integer Read-Write {ip 1} Whether the unit is an IP router. This is always gateway (1), i.e., the unit is an IP router (or combination bridge/router). Attempts to write to this field with a different value will not change its value, and “badValue” GetResponse PDUs are returned for all such SetRequest PDUs.
Chapter 2: TCP/IP MIB-II ipInDiscards Counter Read-Only {ip 8} The number of packets that were received without error, but were not processed (due to insufficient resources, for example). ipInDelivers Counter Read-Only {ip 9} The total number of input packets successfully delivered to the IP user-protocol layers. ipOutRequests Counter Read-Only {ip 10} The total number of IP output packets generated by this unit. This count does not include any packets represented in ipForwDatagrams.
IP Group ipReasmOKs Counter Read-Only {ip 15} The number of IP datagrams which were successfully reassembled. ipReasmFails Counter Read-Only {ip 16} The number of failures (for whatever reason timed-out, errors, etc.) detected by the IP reassembly algorithm. This is not necessarily a count of discarded IP fragments since some algorithms (notably RFC 815’s) can lose track of the number of fragments by combining them as they are received.
Chapter 2: TCP/IP MIB-II ipAdEntAddr IP Address Read-Only {ipAddrEntry 1} The IP address itself. Although this field is Read-Only, the unit’s sifIpAddress parameter can be written to affect changes. ipAdEntIfIndex Integer Read-Only {ipAddrEntry 2} The port number which has the indicated IP address. ipAdEntNetMask IP Address Read-Write3 {ipAddrEntry 3} The network/subnet mask associated with the IP address.
IP Group 2.4.2 IP Routing Table The TCP/IP IP routing table contains the routing information for each route currently known by the unit.
Chapter 2: TCP/IP MIB-II ipRouteMetric1 Integer Read-Write {ipRouteEntry 3} The primary routing metric for this route. This is the zero-based hop count to ipRouteDest. That is, a hop count of zero indicates that ipRouteDest is on a directly connected network. ipRouteMetric2 Integer Read-Write {ipRouteEntry 4} An alternative routing metric for this route. This must be greater than zero. ipRouteMetric3 Integer Read-Write {ipRouteEntry 5} An alternative routing metric for this route.
IP Group ipRouteProto Integer Read-Only {ipRouteEntry 9} The manner in which the route was learned. Values include: • other (1) - none of the following • local (2) - non-protocol information, manually • netmgmt (3) - configured entries set via a network management protocol • icmp (4) - obtained via ICMP e.g.
Chapter 2: TCP/IP MIB-II ipRouteInfo Object Identifier Read-Write {ipRouteEntry 13} A reference to additional MIB definitions, specific to the routing protocol which is responsible for this route. This information is not present in the unit, so ipRouteInfo should be set to the object identifier {0 0}. 2.4.3 IP Address Translation Table The TCP/IP IP address translation table contains mappings of Internet addresses to MAC addresses, except for the Internet addresses of the unit itself.
ICMP Group ipNetToMediaPhysAddress Physical Address Read-Write {ipNetToMediaEntry 2} The MAC address (for PPP ports, this should be a single byte of hexadecimal FF; for FDDI and Token Ring ports, this should be little endian, although there are some factions of the SNMP community which believe this should be big endian; for Ethernet ports, this should be little endian). ipNetToMediaNetAddress IP Address Read-Write {ipNetToMediaEntry 3} The IP address which corresponds to the ipNetToMediaPhysAddress.
Chapter 2: TCP/IP MIB-II icmpInErrors Counter Read-Only {icmp 2} The number of ICMP messages which were received with errors (bad checksums, bad length, etc.). icmpInDestUnreachs Counter Read-Only {icmp 3} The number of ICMP “Destination Unreachable” messages received. icmpInTimeExcds Counter Read-Only {icmp 4} The number of ICMP “Time Exceeded” messages received. icmpInParmProbs Counter Read-Only {icmp 5} The number of ICMP “Parameter Problem” messages received.
ICMP Group icmpInTimestampsReps Counter Read-Only {icmp 11} The number of ICMP “Timestamp Reply” messages received. icmpInAddrMasks Counter Read-Only {icmp 12} The number of ICMP “Address Mask Request” messages received. icmpInAddrMaskReps Counter Read-Only {icmp 13} The number of ICMP “Address Mask Reply” messages received. icmpOutMsgs Counter Read-Only {icmp 14} The total number of ICMP messages which were sent by this unit. This includes all messages counted by icmpOutErrors.
Chapter 2: TCP/IP MIB-II icmpOutRedirects Counter Read-Only {icmp 20} The number of ICMP “Redirect” messages sent. icmpOutEchos Counter Read-Only {icmp 21} The number of ICMP “Echo (request)” messages sent. icmpOutEchoReps Counter Read-Only {icmp 22} The number of ICMP “Echo Reply” messages sent. icmpOutTimestamps Counter Read-Only {icmp 23} The number of ICMP “Timestamp (request)” messages sent. icmpOutTimestampReps Counter Read-Only {icmp 24} The number of ICMP “Timestamp Reply” messages sent.
UDP Group 2.7 UDP GROUP udp {mib-2 7} The TCP/IP UDP Group parameters are described below. udpInDatagrams Counter Read-Only {udp 1} The total number of UDP datagrams delivered to UDP users. udpNoPorts Counter Read-Only {udp 2} The total number of received UDP datagrams for which there was no application at the destination port.
Chapter 2: TCP/IP MIB-II udpLocalAddress IP Address Read-Only {udpEntry 1} The all zeroes IP address (0.0.0.0), which indicates that the UDP listener is willing to accept UDP datagrams for any IP address associated with the unit. udpLocalPort Integer Read-Only {udpEntry 2} The UDP port number, i.e., one of 69, 161, and 520. Note that reception of SNMP Traps (UDP port number 162) is not supported by the unit. 2.
SNMP Group 2.11 SNMP GROUP snmp {mib-2 11} The TCP/IP SNMP Group parameters are described below. snmpInPkts Counter Read-Only {snmp 1} The number of SNMP PDUs received by the unit. snmpOutPkts Counter Read-Only {snmp 2} The number of SNMP PDUs created by the unit. snmpInBadVersions Counter Read-Only {snmp 3} The number of SNMP PDUs received by the unit which had an unsupported SNMP version.
Chapter 2: TCP/IP MIB-II snmpInTooBigs Counter Read-Only {snmp 8} Always zero, since the unit ignores all SNMP response PDUs. snmpInNoSuchNames Counter Read-Only {snmp 9} Always zero, since the unit ignores all SNMP response PDUs. snmpInBadValues Counter Read-Only {snmp 10} Always zero, since the unit ignores all SNMP response PDUs. snmpInReadOnlys Counter Read-Only {snmp 11} Always zero, since the unit ignores all SNMP response PDUs.
SNMP Group snmpInGetNexts Counter Read-Only {snmp 16} The total number of SNMP GetNext PDUs received by the unit, which have been processed with no errors. snmpInSetRequests Counter Read-Only {snmp 17} The total number of SNMP SetRequest PDUs received by the unit, which have been processed with no errors. snmpInGetResponses Counter Read-Only {snmp 18} Always zero, since the unit ignores all SNMP response PDUs.
Chapter 2: TCP/IP MIB-II snmpOutGenErrs Counter Read-Only {snmp 24} The total number of SNMP PDUs created by the unit, with a value of “genErr” in the PDU’s “ErrorStatus”. snmpOutGetRequests Counter Read-Only {snmp 25} Always zero, since the unit never creates any SNMP request PDUs. snmpOutGetNexts Counter Read-Only {snmp 26} Always zero, since the unit never creates any SNMP request PDUs. snmpOutSetRequests Counter Read-Only {snmp 27} Always zero, since the unit never creates any SNMP request PDUs.
CHAPTER 3 ETHERNET MIB The unit supports the Ethernet MIB as defined in Definitions of Managed Objects for the Ethernet-like Interface Types, RFC 1284 (J. Cook, editor), dated December 1991. The MIB tree prefix for reaching the Ethernet group is: 1.3.6.1.2.1.10. transmission {mib-2 10} 3.1 GENERIC ETHERNET-LIKE GROUP dot3 {transmission 7} dot3Table Not-Accessible {dot3 1} A list of interface entries; one per Ethernet port. The entry instances correspond to the unit’s port numbers.
Chapter 3: Ethernet MIB dot3InitializeMAC Integer Read-Write {dot3Entry 2} Whether the port has been initialized. Initializing a port automatically resets all of the port’s statistics, and enables transmit and receive (the receiver will be in promiscuous mode). The value of dot3InitializeMAC is not saved in the event that the unit reboots. Values include: • initialized (1) • uninitialized (2) dot3MACSubLayerStatus Integer Read-Write {dot3Entry 3} Treated identically to dot3InitializeMAC.
Ethernet-Like Statistics Group 3.2 ETHERNET-LIKE STATISTICS GROUP The dot3StatsTable is specified in a unique manner. That is, the RFC specifies that value of 0 should be returned for counters that are not implemented. dot3StatsTable Not-Accessible {dot3 2} A list of interface entries; one per Ethernet port, which correspond to the dot3Table entries. dot3StatsEntry Not-Accessible {dot3StatsTable 1} A set of statistics for an Ethernet entry. The individual components are described below.
Chapter 3: Ethernet MIB dot3StatsSQETestErrors Counter Read-Only {dot3StatsEntry 6} The number of times an SQE failure ( i.e., heartbeat lost) occurred, since the port was last enabled. This counter is only incremented when heartbeat is lost, if the port has been configured to expect heartbeat (see sifExpectSQE). Increments to this counter correspond to one or more packets experiencing SQE failure.
Ethernet-Like Collision Statistics Group dot3StatsFrameTooLongs Counter Read-Only {dot3StatsEntry 13} The number of times a received packet was too long, since the port was last enabled. dot3StatsInRangeLengthErrors Counter Read-Only {dot3StatsEntry 14} The number of received frames with an incorrect LLC data size. Zero is always returned.
Chapter 3: Ethernet MIB 3.6 ETHERNET-LIKE CHIPSETS GROUP dot3ChipSets {dot3 8} There are no MIB variables in this group.
CHAPTER 4 TOKEN RING MIB The unit supports the Token Ring MIB as defined in IEEE 802.5 Token Ring MIB, RFC 1231 (K. McCloghrie, editor) dated May 1991. Note that Reassignment of Experimental MIBs to Standard MIBs, RFC 1239 (J. Reynolds, editor), dated June 1991, has reassigned the Token Ring MIB from the experimental namespace to the transmission namespace. The MIB branch for reaching the Token Ring group is: 1.3.6.1.2.1.10. 4.1 TOKEN RING GROUP dot5 {transmission 9} 4.1.
Chapter 4: Token Ring MIB dot5Commands Integer Read-Write {dot5Entry 2} When this object is set to the value of open (2), the station should go into the open state. The progress and success of the open is given by the values of the objects dot5RingState and dot5RingOpenStatus. When this object is set to the value of reset(3), then the station should do a reset. On a reset, all MIB counters should retain their values, if possible. Other side affects are dependent on the hardware chip set.
Token Ring Group dot5RingState Integer Read-Only {dot5Entry 4} The current interface state with respect to entering or leaving the ring. Values include: • opened (1) • closed (2) • opening (3) • closing (4) • openFailure (5) • ringFailure (6) dot5RingOpenStatus Integer Read-Only {dot5Entry 5} This object indicates the success, or the reason for failure, of the station’s most recent attempt to enter the ring.
Chapter 4: Token Ring MIB dot5Functional MacAddress Read-Write {dot5Entry 9} The bit mask of all Token Ring functional addresses for which this interface will accept frames. 4.1.2 Token Ring Statistics Table dot5StatsTable Not-Accessible {dot5 2} A table containing Token Ring statistics, one entry per 802.5 interface. All the statistics are defined using the syntax Counter as 32 bit wrap around counters. The entry instances correspond to the unit’s port numbers.
Token Ring Group dot5StatsACErrors Counter Read-Only {dot5StatsEntry 4} This counter is incremented when a station receives an AMP or SMP frame in which A is equal to C is equal to 0, and then receives another SMP frame with A is equal to C is equal to 0 without first receiving an AMP frame. It denotes a station that cannot set the AC bits properly. dot5StatsAbortTransErrors Counter Read-Only {dot5StatsEntry 5} This counter is incremented when a station transmits an abort delimiter while transmitting.
Chapter 4: Token Ring MIB dot5StatsSoftErrors Counter Read-Only {dot5StatsEntry 11} The number of Soft Errors the interface has detected. It directly corresponds to the number of Report Error MAC frames that this interface has transmitted. Soft Errors are those which are recoverable by the MAC layer protocols. dot5StatsHardErrors Counter Read-Only {dot5StatsEntry 12} The number of times this interface has detected an immediately recoverable fatal error.
Token Ring Group dot5StatsSingles Counter Read-Only {dot5StatsEntry 18} The number of times the interface has sensed that it is the only station on the ring. This will happen if the interface is the first one up on a ring, or if there is a hardware problem. dot5StatsFreqErrors Counter Read-Only {dot5StatsEntry 19} The number of times the interface has detected that the frequency of the incoming signal differs from the expected frequency by more than that specified by the IEEE 802.5 standard. 4.1.
Chapter 4: Token Ring MIB 4-8 ATX MIB Reference Guide
CHAPTER 5 FDDI MIB The ATX supports the FDDI MIB as defined in FDDI Management Information Base, RFC 1512 (Jeffery D. Case, editor) dated September 1993. The FDDI MIB is divided into groups of parameters. The individual groups are described in the subsections below. You may also need to refer to the RFC, since this document paraphrases the standard MIB in order to provide device specific descriptions.
Chapter 5: FDDI MIB 5.1.1 SMT Table fddimibSMTTable Not-Accessible {fddimibSMT 2} A list of interface entries; one per FDDI port. The entries are indexed by fddimibSMTIndex. fddimibSMTEntry Not-Accessible {fddimibSMTTable 1} A set of operational attributed for an FDDI port. The individual components are described below. fddimibSMTIndex Integer Read-Only {fddimibSMTEntry 1} A unique value for each SMT. The values do not correspond to the unit’s port numbers.
SMT Group fddimibSMTLoVersionID Integer Read-Only {fddimibSMTEntry 5} The lowest version of SMT that this station supports (corresponds to ANSI {fddiSMT 15}, refer to ANSI 7.1.2.2). fddimibSMTUserData Octet String Read-Write {fddimibSMTEntry 6} This variable contains 32 octets of user defined information (corresponds to ANSI {fddiSMT 17}). The information shall be an ASCII string.
Chapter 5: FDDI MIB fddimibSMTConfigPolicy Integer Read-Only# {fddimibSMTEntry 13} A value that indicates the configuration policies currently desired in a node (corresponds to ANSI {fddiSMT 26}). This is always 0.
SMT Group fddimibSMTTraceMaxExpiration Integer Read-Write {fddimibSMTEntry 17} Reference Trace_Max (corresponds to ANSI {fddiSMT 31}), (refer to ANSI SMT 9.4.4.2.2). fddimibSMTBypassPresent Integer Read-Only {fddimibSMTEntry 18} A flag indicating if the station has a bypass on its AB port pair (corresponds to ANSI {fddiSMT 34}). fddimibSMTECMState Integer Read-Only {fddimibSMTEntry 19} Indicates the current state of the ECM state machine (corresponds to ANSI {fddiSMT 41}, refer to ANSI SMT 9.5.2).
Chapter 5: FDDI MIB fddimibSMTTimeStamp Integer Read-Only {fddimibSMTEntry 24} This variable assumes the value of TimeStamp, in the unit of milliseconds (corresponds to ANSI {fddiSMT 51}, refer to ANSI SMT 8.3.2.1). fddimibSMTTransitionTimeStamp Integer Read-Only {fddimibSMTEntry 25} This variable assumes the value of the TransitionTimeStamp, in the unit of milliseconds (corresponds to ANSI {fddiSMT 52}, refer to ANSI SMT 8.3.2.1).
MAC Group fddimibMACSMTIndex Integer Read-Only {fddimibMACEntry 1} The value of the SMT index associated with this MAC. The values do not correspond to the unit’s port numbers. For example, parameter instance {fddimibMACSMTIndex 1} corresponds to the unit’s first FDDI port, which cannot be port number 1, since port number 1 is the UART.
Chapter 5: FDDI MIB fddimibMACCurrentPath Integer Read-Only {fddimibMACEntry 8} Indicates the path into which this MAC is currently inserted (corresponds to ANSI {fddiMAC 23}, refer to ANSI SMT 9.7.7). fddimibMACUpstreamNbr Octet String Read-Only {fddimibMACEntry 9} The MAC’s upstream neighbor’s long individual MAC address (corresponds to ANSI {fddiMAC 24}.
MAC Group fddimibMACRequestedPaths Integer Read-Only# {fddimibMACEntry 14} List of permitted Paths which specifies the Path (s) into which the MAC may be inserted (corresponds to ANSI {fddiMAC 32} refer to ANSI SMT 9.7). Only default setting as defined in SMT 9.7 is supported. fddimibMACDownstreamPORTType Integer Read-Only {fddimibMACEntry 15} Indicates the PC-Type of the first port that is downstream of this MAC (corresponds to ANSI {fddiMAC 33}).
Chapter 5: FDDI MIB fddimibMACFrameCts Counter Read-Write* {fddimibMACEntry 21} A count of the number of frames received by this MAC (corresponds to ANSI {fddiMAC 71}, refer to ANSI MAC 7.5.1). Any attempt to write this parameter will cause the MAC’s Frame_Ct, Copied_Ct, Transmit_Ct, Error_Ct, and Lost_Ct to be zeroed.
MAC Group fddimibMACFrameErrorThreshold Integer Read-Write {fddimibMACEntry 26} A threshold (0..65536) for determining when a MAC Condition Report (corresponds to ANSI {fddiMAC 95}, refer to ANSI MAC 8.3.1.1) shall be generated. fddimibMACFrameErrorRatio Integer Read-Only {fddimibMACEntry 27} The actual frame error ratio (corresponds to ANSI {fddiMAC 96}).
Chapter 5: FDDI MIB fddimibMACHardwarePresent Integer Read-Only {fddimibMACEntry 33} This variable indicates the presence of underlying hardware support for this MAC object (corresponds to ANSI {fddiMAC 117}). This is always true (1). fddimibMACMAUnitdataEnable Integer Read-Write {fddimibMACEntry 34} This variable determines the value of the MA_UNITDATA_Enable flag in RMT (corresponds to ANSI {fddiMAC 118}. 5.3 MAC COUNTER GROUP fddimibMACCounters {fddimib 3} This is the Enhanced MAC Counters group.
PATH Group fddimibPATHSMTIndex Integer Read-Only {fddimibPATHEntry 1} The value of the SMT index associated with this PATH. fddimibPATHIndex Integer Read-Only {fddimibPATHEntry 2} Index variable for uniquely identifying the primary and secondary PATH object instances (corresponds to ANSI {fddiPATH 11}). This is 1 (for a primary path) or 2 (for a secondary path).
Chapter 5: FDDI MIB 5.4.2 PATH Config Table fddimibPATHConfigTable Not-Accessible {fddimibPATH 3} A table of Path configuration entries. The entries are indexed by fddimibPATHConfigSMTIndex, fddimibPATHConfigPATHIndex and fddimibPATHConfigTokenOrder. fddimibPATHConfigEntry Non-Accessible {fddimibPATHConfigTable 1} A set of operational attributes for a path configuration entry. The individual components are described below.
PORT Group 5.5 PORT GROUP fddimibPORT {fddimib 5} The FDDI PORT Group parameters are the following: fddimibPORTNumber Integer Read-only {fddimibPORT 1} The total number of PHYS possible (across all FDDI ports) on this unit. 5.5.1 PORT Table fddimibPORTTable Not-Accessible {fddimibPORT 2} A list of interface entries; one per each PHY. The entries are indexed by fddimibPORTSMTIndex and fddimibPORTIndex.
Chapter 5: FDDI MIB fddimibPORTNeighborType Integer Read-Only {fddimibPORTEntry 4} The type of the remote PORT as determined in PCM (corresponds to ANSI {fddiPORT 13}). fddimibPORTConnectionPolicies Integer Read-Only# {fddimibPORTEntry 5} A value representing the PORT’s connection policies desired in the node (corresponds to ANSI {fddiPORT 14}).
PORT Group fddimibPORTPMDClass Integer Read-Only {fddimibPORTEntry 11} This variable indicates the type of PMD entity associated with this port (corresponds to ANSI {fddiPORT 22}). fddimibPORTConnectionCapabilities Integer Read-Only {fddimibPORTEntry 12} A value that indicates the connection capabilities of the port (corresponds to ANSI {fddiPORT 23}).
Chapter 5: FDDI MIB fddimibPORTLerCutoff Integer Read-Write {fddimibPORTEntry 18} The link error rate estimate at which a link connection will be broken (corresponds to ANSI {fddiPORT 58}). fddimibPORTLerAlarm Integer Read-Write {fddimibPORTEntry 19} The link error rate estimate at which a link connection will generate an alarm (corresponds to ANSI {fddiPORT 59}).
PORT Group fddimibPORTAction Integer Read-Write {fddimibPORTEntry 25} A port action to be performed (corresponds to ANSI {fddiPORT 70}). The unit always tries to start the port, if the relevant hardware passes diagnostics, and if the port is configured to be used. Attempts to write to this field with values that are not consistent with the above, will result in “badValue” being returned.
Chapter 5: FDDI MIB 5-20 ATX MIB Reference Guide
CHAPTER 6 BRIDGE MIB The unit supports the Bridge MIB {mib-2 17} as defined in Definitions of Managed Objects for Bridges, RFC 1286 (Decker, Langille, Rijsinghani, and McCloghrie, editors). The access types of some of the parameters have been extended from Read-Only to Read-Write, indicatd by an asterisk (*); other parameters have been changed from Read-Write to Read-Only, indicated by a number sign (#). The access type of all other parameters is as indicated in the standard MIB.
Chapter 6: Bridge MIB dot1dBaseType Integer Read-Only {dot1dBase 3} Indicates what type of bridging this bridge can perform. If a bridge is actually performing a certain type of bridging this will be indicated by entries in the port table for the given type. The unit supports srt (4). dot1dBasePortTable Not-Accessible {dot1dBase 4} A table that contains generic information about every port that is associated with this bridge. Transparent, source-route, and srt ports are included.
Spanning Tree Group dot1dBasePortDelayExceededDiscards Counter Read-Only {dot1dBasePortEntry 4} The number of frames discarded by this port due to excessive transit delay through the bridge. It is incremented by both transparent and source route bridges. dot1dBasePortMtuExceededDiscards Counter Read-Only {dot1dBasePortEntry 5} The number of frames discarded by this port due to an excessive size. It is incremented by both transparent and source route bridges. 6.
Chapter 6: Bridge MIB dot1dStpTopChanges Counter Read-Only {dot1dStp 4} The total number of topology changes detected by this bridge since the management entity was last reset or initialized. dot1dStpDesignatedRoot Octet String Read-Only {dot1dStp 5} The bridge identifier of the root of the spanning tree as determined by the Spanning Tree Protocol as executed by this node. This value is used as the Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
Spanning Tree Group dot1dStpHoldTime Integer Read-Only {dot1dStp 10} This time value determines the interval length during which no more than two Configuration bridge PDUs shall be transmitted by this node, in units of hundredths of a second. dot1dStpForwardDelay Integer Read-Only {dot1dStp 11} This time value, measured in units of hundredths of a second, controls how fast a port changes its spanning state when moving towards the Forwarding state.
Chapter 6: Bridge MIB dot1dStpBridgeForwardDelay TimeTicks Read-Write {dot1dStp 14} The value that all bridges use for ForwardDelay when this bridge is acting as the root. Note that 802.1d/D9 specifies that the range for this parameter is related to the value of dot1dStpBridgeMaxAge. The granularity of this timer is specified by 802.1d/D9 to be 1 second. An agent may return a badValue error if a set is attempted to a value which is not a whole number of seconds.
Spanning Tree Group dot1dStpPortState Integer Read-Only {dot1dStpPortEntry 3} The port’s current state as defined by application of the Spanning Tree Protocol. This state controls what action a port takes on reception of a frame. If the bridge has detected a port that is malfunctioning it will place that port into the broken (6) state. For ports which are disabled (see dot1dStpPortEnable), this object will have a value of disabled (1).
Chapter 6: Bridge MIB dot1dStpPortDesignatedRoot Octet String Read-Only {dot1dStpPortEntry 6} The unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the segment to which the port is attached. dot1dStpPortDesignatedCost Integer Read-Only {dot1dStpPortEntry 7} The path cost of the Designated Port of the segment connected to this port. This value is compared to the Root Path Cost field in received bridge PDUs.
Source Route Group dot1dSrPortEntry Not-Accessible {dot1dSrPortTable 1} A list of information for each port of a source route bridge. dot1dSrPort Integer Read-Only {dot1dSrPortEntry 1} The port number of the port for which this entry contains Source Route management information. dot1dSrPortHopCount Integer Read-Write {dot1dSrPortEntry 2} The maximum number of routing descriptors allowed in an All Paths or Spanning Tree Explorer frames.
Chapter 6: Bridge MIB dot1dSrPortTargetSegment Integer Read-Write {dot1dSrPortEntry 5} The segment number that corresponds to the target segment this port is considered to be connected to by the bridge. Current source routing protocols limit this value to the range 0 through 4095. A value of 65535 signifies that no target segment is assigned to this port. dot1dSrPortLargestFrame Integer Read-Write {dot1dSrPortEntry 6} The maximum size of the INFO field (LLC and above) that this port can send/ receive.
Source Route Group dot1dSrPortSpecOutFrames Counter Read-Only {dot1dSrPortEntry 9} The number of specifically routed frames that this port has transmitted on its segment. dot1dSrPortApeInFrames Counter Read-Only {dot1dSrPortEntry 10} The number of all paths explorer frames that have been received by this port from its segment. dot1dSrPortApeOutFrames Counter Read-Only {dot1dSrPortEntry 11} The number of all paths explorer frames that have been transmitted by this port on its segment.
Chapter 6: Bridge MIB 6.4 TRANSPARENT GROUP dot1dTp {dot1dBridge 4} dot1dTpLearnedEntryDiscards Counter Read-Only {dot1dTp 1} The total number of Forwarding Database entries, which have been or would have been learned, but have been discarded due to a lack of space to store them in the Forwarding Database. If this counter is increasing, it indicates that the Forwarding Database is regularly becoming full (a condition which has unpleasant performance effects on the subnetwork).
Transparent Group dot1dTpFdbPort Integer Read-Only {dot1dTpFdbEntry 2} Either the value 0, or the port number of the port on which a frame having a source address equal to the value of the corresponding instance of dot1dTpFdbAddress has been seen. A value of 0 indicates that the port number has not been learned but that the bridge does have some forwarding/filtering information about this address (e.g., in the dot1dStaticTable).
Chapter 6: Bridge MIB dot1dTpPort Integer Read-Only {dot1dTpPortEntry 1} The port number of the port for which this entry contains transparent bridging management information. dot1dTpPortMaxInfo Integer Read-Only {dot1dTpPortEntry 2} The maximum size of the INFO (non-MAC) field that this port will receive or transmit. The type/length field (2 octets) in Ethernet/802.3 packets are considered to be part of the MAC header.
Static Database Group 6.5 STATIC DATABASE GROUP dot1dStatic {dot1dBridge 5} dot1dStaticTable Not-Accessible {dot1dStatic 1} A table containing filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from specific ports and containing specific destination addresses are allowed to be forwarded.
Chapter 6: Bridge MIB The unit does not store the value 0. Instead, a SetRequest with a value 0 will cause the unit to automatically create entries for all ports that have no other applicable entries. dot1dStaticAllowedToGoTo Octet String Read-Write {dot1dStaticEntry 3} The set of ports to which frames received from a specific port and destined for a specific MAC address, are allowed to be forwarded.
CHAPTER 7 REPEATER MIB The unit supports the Ethernet Repeater MIB as defined in Definitions of Managed Objects for IEEE 802.3 Repeater Devices. RFC 1368 (McMaster and McCloghrie, editors). The unit has one major special feature. Packets are not repeated across Groups. Instead, Groups are treated as separate repeaters, which may be logically connected by the bridging/routing functions performed by the unit. The MIB tree for reaching the Ethernet Repeater group is: 1.3.6.1.2.1.
Chapter 7: Repeater MIB rptrOperStatus Integer Read-Only {rptrRptrInfo 2} The rptrOperStatus object indicates the operational state of the repeater. The rptrHealthText object may be consulted for more specific information about the state of the repeater’s health. In the case of multiple kinds of failures (e.g.
Group Info rptNonDisruptTest Integer Read-Write {rptrRptrInfo 5} Setting this object to selfTest (2) causes the repeater to perform a agent-specific, non-disruptive self-test that has the following characteristics a) The nature of the tests is not specified. b) The test does not change the state of the repeater or management information about the repeater. c) The test does not inject packets onto any segment. d) The test does not prevent the relay of any packets.
Chapter 7: Repeater MIB rptrGroupDescr Octet String Read-Only {rptrGroupEntry 2} A textual description of the group. This value should include the full name and version identification of the group’s hardware type and indicate how the group is differentiated from other groups in the repeater. Plug in Module, “Rev A” or “John Doe 10BASE-T 4-port SIMM socket Version 2.1” are examples of valid group descriptions. It is mandatory that this only contain printable ASCII characters.
Port Info rptrGroupLastOperStatusChange TimeTicks Read-Only {rptrGroupEntry 5} An object that contains the value of sysUpTime at the time that the value of the rptrGroupOperStatus object for this group last changed. A value of zero indicates that the group’s oper status has not changed since the agent last restarted. rptrGroupPortCapacity Integer Read-Only {rptrGroupEntry 6} The rptrGroupPortCapacity is the number of ports that can be contained within the group. Valid range is 1-1024.
Chapter 7: Repeater MIB rptrPortAdminStatus Integer Read-Write {rptrPortEntry 3} Setting this object to disabled (2) disables the port. A disabled port neither transmits nor receives. Once disabled, a port must be explicitly enabled to restore operation. A port which is disabled when power is lost or when a reset is exerted shall remain disabled when normal operation resumes.
Monitor Package 7.4 MONITOR PACKAGE rptrMonitorPackage {snmpDot3RptrMgt 2} 7.5 MONITOR RPTR INFO rptrMonitorRptrInfo {rptrMonitorPackage 1} rptrMonitorTransmitCollisions Counter Read-Only {rptrMonitorRptrInfo 1} This counter is incremented every time the repeater state machine enters the TRANSMIT COLLISION state from any state other than ONE PORT LEFT. (Ref Fig. 9-2, IEEE 802.3 Std). The approximate minimum time for rollover of this counter is 16 hours. 7.
Chapter 7: Repeater MIB rptrMonitorGroupTotalFrames Integer Read-Only {rptMonitorGroupEntry 2} The total number of frames of valid frame length that have been received on the ports in this group. This counter is the summation of the values of the rptrMonitorPortReadableFrames counters for all of the ports in the groups. This statistic provides one of the parameters necessary for obtaining the packet error rate. The approximate minimum time for rollover of this counter is 80 hours.
Monitor Port Info rptrMonitorPortIndex Integer Read-Only {rptrMonitorPortEntry 2} This object identifies the port within the group for which this entry contains information. rptrMonitorPortReadableFrames Counter Read-Only {rptrMonitorPortEntry 3} This object is the number of frames of valid frame length that have been received on this port.
Chapter 7: Repeater MIB rptrMonitorPortAlignmentErrors Counter Read-Only {rptrMonitorPortEntry 6} This counter is incremented by one for each frame received on this port with the FCSError and FramingError signals asserted and CollisionEvent signal deasserted and whose OctetCount is greater than or equal to minFrameSize and less than or equal to maxFrameSize (Ref IEEE 802.3 Std, 4.4.2.1).
Monitor Port Info rptrMonitorPortRunts Counter Read-Only {rptrMonitorPortEntry 9} This counter is incremented by one for each CarrierEvent on this port that meets one of the following two conditions. Only one test need be made. a) The ActivityDuration is greater than ShortEventMaxTime and less than ValidPacketMinTime and the CollisionEvent signal is deasserted. b) The OctetCount is less than 64, the ActivityDuration is greater than ShortEventMaxTime and the CollisionEvent signal is deasserted.
Chapter 7: Repeater MIB rptrMonitorPortVeryLongEvents Counter Read-Only {rptrMonitorPortEntry 12} This counter is incremented by one for each CarrierEvent on this port whose ActivityDuration is greater than the MAU Jabber Lockup Protection timer TW3 (Ref 9.6.1 & 9.6.5, IEEE 802.3 Std). Other counters may be incremented as appropriate.
Address Tracking Package rptrMonitorPortTotalErrors Counter Read-Only {rptrMonitorPortEntry 15} The total number of errors which have occurred on this port. This counter is the summation of the values of other error counters (for the same port), namely rptrMonitorPortFCSErrors, rptrMonitorPortAlignmentErrors, rptrMonitorPortFrameTooLongs, rptrMonitorPortShortEvents, rptrMonitorPortLateEvents, rptrMonitorPortVeryLongEvents, and rptrMonitorPortDataRateMismatches.
Chapter 7: Repeater MIB rptrAddrTrackEntry Not-Accessible {rptrAddrTrackTable 1} An entry in the table, containing address mapping information about a single port. rptrAddrTrackGroupIndex Integer Read-Only {rptrAddrTrackEntry 1} This object identifies the group containing the port for which this entry contains information. rptrAddrTrackPortIndex Integer Read-Only {rptrAddrTrackEntry 2} This object identifies the port within the group for which this entry contains information.
CHAPTER 8 PPP MIB The unit supports RFC 1471 for PPP link control and RFC 1473 for PPP IP, and RFC 1474 for PPP Bridge support. The MIB tree for reaching the PPP group is: 1.3.6.1.2.1.10. ppp {transmission 23} 8.1 PPP LINK CONTROL TABLE pppLCP {ppp 1} pppLink {pppLCP 1} pppLinkStatusTable Not-Accessible {pppLink 1} A table containing PPP-Link specific variables for this PPP implementation. pppLinkStatusEntry Not-Accessible {pppLinkStatusTable 1} Management information about a particular PPP Link.
Chapter 8: PPP MIB pppLinkStatusBadAddresses Counter Read-only {pppLinkStatusEntry 2} The number of packets received with an incorrect address field. This counter is a component of the ifInErrors variable that is associated with the interface that represents this PPP Link. pppLinkStatusBadControls Counter Read-only {pppLinkStatusEntry 3} The number of packets received on this link with an incorrect control field.
PPP Link Control Table pppLinkStatusRemoteMRU Integer Read-only {pppLinkStatusEntry 7} The current value of the MRU for the remote PPP Entity. This value is the MRU that the local entity is using when sending packets to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (ifOperStatus is up).
Chapter 8: PPP MIB pppLinkStatusLocalToRemoteACCompression Integer Read-only {pppLinkStatusEntry 12} Indicates whether the local PPP entity will use Address and Control Compression when transmitting packets to the remote PPP entity. The value of this object is meaningful only when the link has reached the open state (ifOperStatus is up).
PPP Link Control Table pppLinkConfigEntry Not-Accessible {pppLinkConfigTable 1} Configuration information about a particular PPP Link. pppLinkConfigInitialMRU Integer Read-Write {pppLinkConfigEntry 1} The initial Maximum Receive Unit (MRU) that the local PPP entity will advertise to the remote entity. If the value of this variable is 0 then the local PPP entity will not advertise any MRU to the remote entity and the default MRU will be assumed.
Chapter 8: PPP MIB pppLinkConfigMagicNumber Integer Read-Write {pppLinkConfigEntry 4} If true (2) then the local node will attempt to perform magic number negotiation with the remote node. If false (1) then this negotiation is not performed. In any event, the local node will comply with any magic number negotiations attempted by the remote node, per the PPP specification. Changes to this object take effect when the link is next restarted.
PPP Link Control Table pppLqrInGoodOctets Counter Read-only {pppLqrEntry 2} The LQR InGoodOctets counter for this link. pppLqrLocalPeriod Integer Read-only {pppLqrEntry 3} The LQR reporting period, in hundredths of a second that is in effect for the local PPP entity. pppLqrRemotePeriod Integer Read-only {pppLqrEntry 4} The LQR reporting period, in hundredths of a second, that is in effect for the remote PPP entity.
Chapter 8: PPP MIB pppLqrConfigPeriod Integer Read-Write {pppLqrConfigEntry 1} The LQR reporting period that the local PPP entity will attempt to negotiate with the remote entity, in units of hundredths of a second. Changes to this object take effect when the link is next restarted. pppLqrConfigStatus Integer Read-Write {pppLqrConfigEntry 2} If enabled (2) then the local node will attempt to perform LQR negotiation with the remote node. If disabled (1) then this negotiation is not performed.
PPP IP Table 8.2 PPP IP TABLE pppIp [ppp 3] pppIpTable Not-Accessible {pppIp 1} Table containing the IP parameters and statistics for the local PPP entity. pppIpEntry Not-Accessible {pppIpTable 1} IPCP status information for a particular PPP link. pppIpOperStatus Integer Read-only {pppIpEntry 1} The operational status of the IP network protocol. If the value of this object is up, then the finite state machine for the IP network protocol has reached the opened state.
Chapter 8: PPP MIB pppIpRemoteMaxSlotId Integer Read-only {pppIpEntry 4} The Max-Slot-Id parameter that the remote node has advertised and that is in use on the link. If vj-tcp header compression is not in use on the link then the value of this object shall be 0. The value of this object is meaningful only when the link has reached the open state (pppIpOperStatus is opened).
PPP Bridge Support 8.3 PPP BRIDGE SUPPORT pppBridge {ppp 4} pppBridgeTable Not-Accessible {pppBridge 1} Table containing the parameters and statistics for the local PPP entity that are related to the operation of Bridging over the PPP. pppBridgeEntry Not-Accessible {pppBridgeTable 1} Bridging information for a particular PPP link. pppBridgeOperStatus Integer Read-Only {pppBridgeEntry 1} The operational status of the Bridge network protocol.
Chapter 8: PPP MIB pppBridgeLocalToRemoteLanId Integer Read-Only {pppBridgeEntry 4} Indicates whether the local node will include the LAN Identification field in transmitted packets or not. If false (1) it won’t and if true (2) it will. The value of this object is meaningful only when the link has reached the open state (pppBridgeOperStatus is opened).
PPP Bridge Support pppBridgeConfigRingId Integer Read-Write {pppBridgeConfigEntry 3} If false (1) then the local PPP Entity will not initiate a Remote Ring Identification Option negotiation and if true (2) it will. This MIB object is relevant only if the interface is for 802.5 Token Ring bridging. pppBridgeConfigLineId Integer Read-Write {pppBridgeConfigEntry 4} If false (1) the local PPP Entity won’t initiate a Line Identification Option negotiation and if true (2) it will.
Chapter 8: PPP MIB pppBridgeMediaRemoteStatus Integer Read-Only {pppBridgeMediaEntry 3} Indicates whether the local PPP Bridging Entity believes that the remote PPP Bridging Entity will accept (1) packets of the protocol type identified in pppBridgeMediaMacType on the PPP link identified by ifIndex or not. pppBridgeMediaConfigTable Not-Accessible {pppBridge 4} Table identifying which MAC media types are enabled for the bridging NCPs.
CHAPTER 9 APPLETALK MIB The unit supports the standard AppleTalk MIB, as defined in RFC 1243. The AppleTalk MIB consists of eight groups: • LLAP–describes the localTalk Link Access Protocol variables. • AARRP–describes the AppleTalk Address Resolution Protocol variables. • ATPORT–describes variables relevant to individual ports on the unit. • DDP–describes the Datagram Delivery Protocol variables. • RTMP–describes the Routing Table Maintenance Protocol variables.
Chapter 9: AppleTalk MIB llapIfIndex Integer Read-Only {llapEntry 1} The LLAP interface to which this entry pertains. The interface identified by a particular value of this index is the same interface as identified by the same value of ifIndex. llapInPkts Counter Read-Only {llapEntry 2} The total number of good packets received on this LocalTalk interface. llapOutPkts Counter Read-Only {llapEntry 3} The total number of packets transmitted on this LocalTalk interface.
AARP Group llapNoDataErrors Counter Read-Only {llapEntry 9} The total number of times this LocalTalk interface received a lapRTS packet and expected a data packet, but did not receive any data packet. llapRandomCTSErrors Counter Read-Only {llapEntry 10} The total number of times this LocalTalk interface received a lapCTS packet that was not solicited by a lapRTS packet.
Chapter 9: AppleTalk MIB aarpPhysAddress Octet String Read-Only {aarpEntry 2} The media-dependant physical address. aarpNetAddress Octet String Read-Only {aarpEntry 3} The AppleTalk Network Address corresponding to the media-dependant physical address. 9.3 ATPORT GROUP The ATPort group describes MIB variables related to individual ports on the unit. atport {appletalk 3} atportTable Not-Accessible {atport 1} A list of AppleTalk ports for this entity.
ATPort Group atportType Integer Read-Write {atportEntry 3} The type of port, distinguished by the protocol immediately below DDP in the protocol stack. atportNetStart Octet String Read-Write {atportEntry 4} The first AppleTalk network address in the range configured for this port. This is a two octet DDP network address in network byte order. atportNetEnd Octet String Read-Write {atportEntry 5} The last AppleTalk network address in the range configured for this port.
Chapter 9: AppleTalk MIB atportNetConfig Integer Read-Only {atportEntry 8} The configuration status of this port. atportZoneConfig Integer Read-Only {atportEntry 9} The configuration status of the zone information for this port. atportZone Octet String Read-Write {atportEntry 10} The zone name configured for this AppleTalk port. atportIfIndex Integer Read-Write {atportEntry 11} The physical interface associated with this AppleTalk port.
DDP Group ddpOutLongs Counter Read-Only {ddp 3} The total number of long DDP datagrams which were transmitted from this entity. ddpInReceives Counter Read-Only {ddp 4} The total number of input datagrams received by DDP, including those received in error. ddpForwRequests Counter Read-Only {ddp 5} The number of input datagrams for which this entity was not their final DDP destination, as a result of which an attempt was made to find a route to forward them to that final destination.
Chapter 9: AppleTalk MIB ddpTooLongErrors Counter Read-Only {ddp 10} The total number of input DDP datagrams dropped because the received data length was greater than the data length specified in the DDP header or because they exceeded the maximum DDP datagram size. ddpBroadcastErrors Counter Read-Only {ddp 11} The total number of input DDP datagrams dropped because this entity was not their final destination and they were addressed to the link level broadcast.
RTMP Group rtmpRangeStart Octet StringRead-Write {rtmpEntry 1} The first DDP network address in the network range to which this routing entry pertains. This is a two octet DDP network address in network byte order. rtmpRangeEnd Octet String Read-Write {rtmpEntry 2} The last DDP network address in the network range to which this routing entry pertains. This is a two octet DDP network address in network byte order.
Chapter 9: AppleTalk MIB The values for rtmpState include: • good (1) • suspect (2) • goingBad (3) • bad (4)–may be removed from table. 9.6 ZIP GROUP The zip group describes MIB variables related to the Zone Information Protocol. zip {appletalk 7} zipTable Not-Accessible {zip 1} The table of zone information for reachable AppleTalk networks. zipEntry Not-Accessible {zipTable 1} An entry of zone information for a particular zone and network combination.
NBP Group zipZoneNetEnd Octet String Read-Write {zipEntry 4} The network that ends the range for this entry. This address is a two octet DDP network address in network byte order. If the network to which this zip entry pertains is a Phase 1 network or a non-extended network, the value for zipZoneNetEnd shall be two bytes of zero. zipZoneState Integer Read-Write {zipEntry 5} The state of this zip entry.
Chapter 9: AppleTalk MIB nbpIndex Integer Read-Only {nbpEntry 1} The index of this NBP entry. This value ranges from 1 to the number of NBP entries currently registered on this entity. nbpObject Octet String Read-Only {nbpEntry 2} The name of the service described by this entity. nbpType Octet String Read-Write {nbpEntry 3} The type of the service described by this entity. nbpZone Octet String Read-Write {nbpEntry 4} The zone the service described by this entity is registered in.
ATEcho Group atechoReplies Counter Read-Only {atecho 2} The number of AppleTalk echo replies sent.
Chapter 9: AppleTalk MIB 9-14 ATX MIB Reference Guide
CHAPTER 10 CABLETRON MIB The Cabletron MIB {enterprise 97} is divided into several groups of parameters. The individual groups are described in the subsections below. The MIB tree prefix for reaching the private enterprise Cabletron MIB-II is: 1.3.6.1.4.1.97. sigma 10.1 {enterprise 97} SYSTEM GROUP sys {sigma 1} The System Group contains those parameters which are likely to be applicable for all of the products in the ATX product lines. A detailed description of the parameters follows.
Chapter 10: Cabletron MIB sysTrapTime TimeTicks Read-Write {sys 4} The time, in centiseconds, which should expire between the sending of traps. This value is used when no ICMP source quench datagrams have been received. [Receiving ICMP source quench datagrams will cause the unit to use a time period greater than sysTrapTime]. The unit uses sysTrapTime if any SNMP requests from the NMS has been received within the previous sixty seconds.
ATX Group 10.3.1 Hardware Configuration Group hw {ecs-1 1} This attribute group supplies information which describes the configuration and status of this particular ATX. hwNumber Integer Read-Only {hw 1} The number of slots available for hardware modules, regardless of whether or not the slots are currently populated. This number is fixed as 7. hwSlotTable Not-Accessible {hw 2} A list of the most recent occupants of the slots; one per slot.
Chapter 10: Cabletron MIB hwType Integer Read-Only {hwEntry 2} The module type of the slot’s most recent occupant since the unit was started. The values for hwType correspond to the values for hwPortType (defined later), and are defined as follows: • vacant (1) - slot is not occupied • unknown (2) - reserved • packet-processing-engine (3) - Packet Processing Engine • turbo (4) - Turbo Processor • csma-iom (5) - Ethernet/802.
ATX Group hwDefType Integer Read-Only {hwEntry 4} The module type defined for the slot. Certain pre-defined relationships exist. Slot 1 always contains the Packet Processing Engine board. Slots 2-6 are either unoccupied, or contain IOM boards. Slot 7 is either unoccupied or contains the Turbo Processor board. If hwDefType does not match hwType, then the module will not be used, regardless of the value of hwUseMod. Note that hwDefType can only be changed by rebooting the unit (see the “reboot” group).
Chapter 10: Cabletron MIB 0x00020 ID EEPROM error 0x00040 UART error (the unit will still boot) 0x00080 Cam error 0x00100 Interrupt Control error 0x00200 Watchdog Timeout error 0x00400 Voltage Monitor error 0x00800 Temperature Sensor error 0x01000 Flash EEPROM Bank 1 Checksum error (if Bank 0 is valid, then the unit will still boot) 0x02000 reserved 0x04000 Semaphore error 0x08000 reserved 0x10000 Packet Processing Engine Arbitration error For the Turbo processor board, any combinati
ATX Group For the FDDI IOM board (FIOM), any combination of the following errors may be combined; however, any error will prevent the board from being used: 0x00001 RBC error 0x00002 DPC error 0x00004 FORMAC error 0x00008 ENDEC error 0x00010 FDDI Buffer Memory error 0x00020 RDMAC error 0x00040 Timers error 0x00080 Cam error 0x00100 ID EEPROM error 0x00200 Temperature Sensor error 0x00400 Source Strip Logic error 0x00800 FIOM Arbitration error 0x01000 Data Access Exception error For
Chapter 10: Cabletron MIB For the Ethernet/802.
ATX Group For the HSSI IOM board, any combination of the following errors may be combined; however, any error will prevent the board from being used: 0x00001 Local SRAM error 0x00002 Shared Ram error 0x00004 Rom Checksum error 0x00008 DMA Circuitry error 0x00010 HSSI IOM Arbitration error 0x00020 ID EEPROM Checksum error 0x00040 UART error 0x00080 Semaphore error 0x00100 CAM error 0x00200 Compatibility (with the PPE) error hwManufData DisplayString Read-Only {hwEntry 8} This is a 24-by
Chapter 10: Cabletron MIB hwPortStatus Octet String Read-Only {hwEntry 10} A 4 byte array, where each element represents the status of the port belonging to this module . Values of 01 (status-good) or hex ff (status-bad) are supported. For the Packet Processing Engine, the first byte is the status of the UART port. hwUsePort Obsolete {hwEntry 11} hwDefPortType Octet String Read-Only {hwEntry 12} A 4 byte array, where each element represents the port types defined for the module.
ATX Group hwFirstPort Integer Read-Only {hwEntry 18} The IfIndex number of the first port which resides within this module. hwFatalErr Octet String Read-Only {hwEntry 19} A 32 byte array which contains information about the cause of the module’s last unexpected self-reset, since the unit rebooted. For the Packet Processing Engine and Turbo, this will always be all zeroes, since failure of such a module will cause the unit to reboot.
Chapter 10: Cabletron MIB 0x08 CSMA/CD TP port 0x09 CSMA/CD BNC port 0x0a CSMA/CD FO port 0x0b CSMA/CD TP port with dual RJ-45 jacks (one normal, one crossover). 0x0c CSMA/CD with internal digitized Ethernet 0x20 Token Ring port with a shielded connector 0x21 Token Ring port with an unshielded connector 0x22 Token Ring with dual connectors (one shielded and one unshielded) 0x30 HSSI port with dual jacks (one HSSI; one RS-449 for lower speeds).
ATX Group 10.3.2 Software Configuration Group sw {ecs-1 2} This attribute group supplies information which describes the software configuration of this particular ATX. swNumber Integer Read-Only {sw 1} The number of file sets. This number is fixed as 2. swFilesetTable Not-Accessible {sw 2} A list of the software file sets stored in the ATX. The first file set refers to the file set that was used when the ATX last booted.
Chapter 10: Cabletron MIB swTypes Octet String Read-Only {swFileset 5} The types of files within the file set. The size of swFileTypes may be determined by swCount, since 1 octet is required for each file. The possible file types are • none (0) - File not present • ppe-turbo (1) - Packet Processing Engine and/or Turbo Code • ppe-only (2) - Packet Processing Engine Code • turbo-only (3) - Turbo Code • eiom (4) - EIOM Code (for any Ethernet/802.
ATX Group swFlashBank Integer Read-Only {swFileset 9} The bank number where the software file set resides. The possible values are: • first-bank (1) • second-bank (2) 10.3.3 Unit Administration Group admin {ecs-1 3} This group contains the attributes for configuring the system level control of the entire ATX and the overall ATX status. 10.3.3.
Chapter 10: Cabletron MIB configAnyPass Display String Read-Write {config 2} The authentication password (0-24 bytes) which must match the community name in an SNMP PDU, in order for the operation to be performed. A zero length password indicates that any community name is acceptable. configGetPass Display String Read-Write {config 3} The authentication password (0-24 bytes) which must match the community name in an SNMP Get PDU (except for Debug or password parameters).
ATX Group 0x0020 NO_BPDU - if enabled, prevents BPDUs from being transmitted and keeps ports in Forwarding state (this is to provide interoperability with non-compliant IEEE 802.1d implementations; however, if the physical topology has any loops, then LAN segments will be flooded with duplicates of packets).
Chapter 10: Cabletron MIB configPowerPresent2 Boolean Read-Only {config 11} Whether the second power supply is present. configAlarmDynamic Boolean Read-Write {config 12} Whether changes in dynamic parameters (except for the dynamically learned addresses) should cause enterprise specific trap PDUs to be generated. configAlarmAddresses Boolean Read-Write {config 13} Whether changes in the dynamically learned addresses should cause enterprise specific trap PDUs to be generated.
ATX Group configDumpModule Integer Read-Write {config 19} Flag to select the module to dump on a crash. If set to a value of 1 to 7 the relevant module’s memory will be sent to the UART port on detecting a fatal error situation. A value of zero will disable the dump option. A value of 1 selects the ME, 7 selects the TURBO, and 2-6 select IOM’s. See configDumpStart and configDumpEnd. configDumpStart Integer Read-Write {config 20} Starting address of memory to dump upon detecting a fatal error.
Chapter 10: Cabletron MIB 10.3.3.3 PPE Configuration Group ppe {admin 3} This attribute group permits customization and monitoring of the Packet Processing Engine’s operational parameters. ppeLrgUxRxCnt Integer Read-Write {ppe 1} The number of large data buffers to allocate for the PPE to create packets. This value may be changed automatically by the unit as a result of enabling IPX routing.
ATX Group ppeExtendStats Boolean Read-Write {ppe 6} Whether the PPE should accumulate extended statistics. Extended statistics are tallies, such as byte counts, which are not essential for everyday ATX management, and which may have a slightly detrimental effect on performance. ppeBAddrLimit Integer Read-Write {ppe 7} The maximum number of addresses that the PPE should learn for bridging purposes. The remaining address entries will be used for routing related addresses.
Chapter 10: Cabletron MIB ppeStaticPreference Integer Read-Write {ppe 14} The value to assign to ipRouteMetric2, when adding a statically-defined entry to the IP Routing Table. The route preference value for a static entry is 1. Note that for route preferences the smaller the value, the higher the preference. ppeOspfPreference Integer Read-Write {ppe 15} The value to assign to ipRouteMetric2, when adding an OSPF-learned entry to the IP Routing Table.
ATX Group ppeOspfRouteDiscards Counter Read-Only {ppe 20} Number of times a route learned via OSPF was not added to the IP Routing Table due to insufficient Routing Table space (currently always zero). ppeRouteMemorySize Counter Read-Only {ppe 21} Number of bytes originally given to the routing table heap. ppeRouteMemoryAvail Counter Read-Only {ppe 22} Number of bytes currently available in the routing table heap.
Chapter 10: Cabletron MIB ppeIcmpPduMemoryFailures Counter Read-Only {ppe 29} Number of unsuccessful attempts to allocate memory for an ICMP PDU. ppeIcmpPduMemoryAllocs Counter Read-Only {ppe 30} Number of times memory was allocated for an ICMP PDU. ppeRipPduMemoryFailures Counter Read-Only {ppe 31} Number of unsuccessful attempts to allocate memory for a RIP PDU. ppeRipPduMemoryAllocs Counter Read-Only {ppe 32} Number of times memory was allocated for a RIP PDU.
ATX Group ppeTftpPduMemoryAllocs Counter Read-Only {ppe 38} Number of times memory was allocated for a TFTP PDU. ppeTraceroutePduMemoryFailures Counter Read-Only {ppe 39} Number of unsuccessful attempts to allocate memory for a TraceRoute PDU. ppeTraceroutePduMemoryAllocs Counter Read-Only {ppe 40} Number of times memory was allocated for a TraceRoute PDU. ppeArpPduMemoryFailures Counter Read-Only {ppe 41} Number of unsuccessful attempts to allocate memory for a ARP PDU.
Chapter 10: Cabletron MIB 10.3.3.4 Spanning Tree Group st {admin 4} These attributes define the ATX wide parameters for the Spanning Tree Protocol. stGroupAddr MacAddress Read-Write {st 1} The Spanning Tree Group address, normally 01-80-c2-00-00-00. Changing stGroupAddr will not take effect until the unit reboots. stResAddr OctetString Read-Write {st 2} A series of 90 octets containing the Spanning Tree’s 15 reserved addresses (01-80-c2-00-00-01 through 01-80-c2-00-00-0f).
ATX Group Whether a topology change is currently in progress. stActMaxAge Obsolete {st 11} stActHello Obsolete {st 12} stActDelay Obsolete {st 13} stTopChangeCount Integer Read-Write {st 14} Number of spanning tree topology changes which have occurred, since the unit was last booted (or this parameter was last reset by the NMS). stTopChangeTime TimeTicks Read-Only {st 15} If stTopChange is True, then the time since stTopChange changed from False to True.
Chapter 10: Cabletron MIB meshCostChange Obsolete {mesh 3} meshCostChangeCount Obsolete {mesh 4} meshCostChangeTime Obsolete {mesh 5} meshSubnet Obsolete {mesh 6} 10.3.4 Software Distribution Group swdis {ecs-1 4} This attribute group provides the means by which the NMS may monitor and/or control the TFTP requests to download a new set of software to the ATX.
ATX Group swdisWriteStatus Integer Read-Only {swdis 3} The status of the erase/write operation.
Chapter 10: Cabletron MIB 10.3.5 addr Addresses Configuration Group {ecs-1 5} This attribute group allows the NMS to examine the current address table entries, as well as to remove both static and learned entry information, or to add and modify pre-defined entry information (modifying certain entry information may cause the entire entry to be deleted), or to zero an entry’s statistics.
ATX Group If the addrFlags field is returned with a value of zero, then the desired entry does not exist. To remove an entry completely, the NMS must perform the following steps: Step 1. Set addrMAC with the desired MAC address. (Certain addresses will not be removed by the ATX, i.e., those addresses with entry-other already set within addrFlags.) Step 2. Set addrOperation with the “delete” operation code. Although the ATX will remove the entry, it may relearn and recreate the entry.
Chapter 10: Cabletron MIB If the NMS wants to create a map of which devices exist on which LANs, then the NMS should read all of the dynamically learned addresses from all bridges, and use the spanning tree states of the bridges’ ports to determine the devices actual locations. To read all of a ATX’s dynamically learned addresses, the NMS must perform the following steps: Step 1. Set addrIndex with the desired starting point (-1 will cause the database to be read from the beginning). Step 2.
ATX Group addrMeshs Counter Read-Only {addr 4} The number of ATM, Frame Relay, and/or SMDS addresses in the address table. These addresses are not reflected within addrStatics nor addrDynamics. [ATM, Frame Relay, and SMDS are not yet implemented.] addrDynamicOverflows Counter Read-Write {addr 5} The number times an address was not learned due to insufficient address table space.
Chapter 10: Cabletron MIB • entry-statistics = 24, if set then this is a dynamically learned customer address, which exists on one of the units ports; however, the address can not be used for packet forwarding decision making (e.g., the address was learned as part of a packet’s source routing information, but Spanning Tree learning was not enabled for the port).
ATX Group • entry-reserved = 12, if set then this is a reserved address, and the packets must be discarded. • Bits 11-10 are reserved for future expansion. • Bits 9-0 are reserved. addrMAC MAC Address Read-Write {addr 8} The MAC address for this address definition. addrPort Integer Write-Ignore {addr 9} The port through which this address is connected to the ATX (only valid for entry-dynamic-local, entry-statistics, and entry-port entries).
Chapter 10: Cabletron MIB addrTotalCount Obsolete {addr 13} addrCost1 Obsolete {addr 14} addrCost2 Obsolete {addr 15} addrCost3 Obsolete {addr 16} addrCost4 Obsolete {addr 17} addrSource1 Obsolete {addr 18} addrSource2 Obsolete {addr 19} addrSource3 Obsolete {addr 20} addrSource4 Obsolete {addr 21} addrDest1 Obsolete {addr 22} addrDest2 Obsolete {addr 23} addrDest3 Obsolete {addr 24} addrDest4 Obsolete {addr 25} addrStabile Obsolete {addr 26} 10-36 ATX MIB Reference Guide
ATX Group addrTxSource Obsolete {addr 27} addrTxDestination Obsolete {addr 28} addrOldLeast Obsolete {addr 29} addrOldTotal Obsolete {addr 30} addrOldSource1 Obsolete {addr 31} addrOldSource2 Obsolete {addr 32} addrOldSource3 Obsolete {addr 33} addrOldSource4 Obsolete {addr 34} addrOldDestination1 Obsolete {addr 35} addrOldDestination2 Obsolete {addr 36} addrOldDestination3 Obsolete {addr 37} addrOldDestination4 Obsolete {addr 38} addrOldTxSource Obsolete {addr 39} addrOldTxDestina
Chapter 10: Cabletron MIB addrOperation Integer Read-Write {addr 41} The operation to be performed upon the described address. The possibilities include: • read-random (1) • read-next (2) • zero-stats (3) • update (4) • delete (5) • read-block (6) addrIndex Integer Read-Write {addr 42} The index number to be used for read-next and read-block operations. When the ATX boots, addrIndex is initialized to -1.
ATX Group addrRxPkts Counter Write-Ignore {addr 46} The number of packets received from the address on a port that was in Spanning Tree learning or forwarding state (can be zeroed by zero-stats). addrRxChars Counter Write-Ignore {addr 47} The number of characters in the packets received from the address on a port that was in Spanning Tree Learning or Forwarding state (can be zeroed by zero-stats).
Chapter 10: Cabletron MIB addrBlock Octet String Write-Ignore {addr 53} A series of 0-700 octets, which represents 0-100 addresses. Each address consists of a 6 octet MAC Address followed by a 1 byte port number. If the port number is zero, then the address is that of a specially configured address; otherwise, the address is a dynamically learned address. This parameter is only used for dumping blocks of MAC addresses. addrAlarmMAC MAC Address Read-Only {addr 54} The MAC address for an address entry.
ATX Group snmpsmtUpstreamDescriptor Obsolete {snmpsmt 3} snmpsmtUpstreamState Obsolete {snmpsmt 4} fddismtTable Not-Accessible {snmpsmt 5} A list of snmpsmt entries, one per FDDI board. fddismtEntry Not-Accessible {fddismtTable 1} A set of objects for an interface entry. The individual components are described below. fddismtIndex Integer Read-Only {fddismtEntry 1} A unique value for each SMT. It represents the sequence number of the FDDI board in the unit.
Chapter 10: Cabletron MIB fddismtUpstreamState Octet String Read-Only {fddismtEntry 5} A four byte string containing the upstream neighbor’s Station State parameter, as defined by the SMT frame protocols. If the upstream neighbor has not yet been learned (i.e., snmpsmtUpstreamRsp contains all zeroes), then a string of all zeroes is returned. 10.3.
ATX Group The number of large data buffers for receiving packets; must be zero for CSMA and UART ports. sifUxTxCnt Integer Read-Write {sifEntry 4} The maximum size of the port’s transmit queue, i.e., the number of packets that can be in the port’s transmit queue, waiting to be transmitted. sifThreshold Integer Read-Write {sifEntry 5} Maximum number of combined receive and transmit packet hardware errors before an alarm should be generated. See ifInErrors.
Chapter 10: Cabletron MIB sifFilterFlags Integer Read-Write {sifEntry 11} Special filter flags. The value can be one of the following: 0x0000 DEFAULT Turns the filter off 0x0001 NO_SOURCE_SAME, broadcast all packets from this port that have identical source and destination addresses. 0x0002 NO_SOURCE_LEARNT, do not forward any packets from this port, except those with a pre-defined source address.
ATX Group 0x0002 TBRIDGE - shows if the port is enabled for Transparent IEEE 802.
Chapter 10: Cabletron MIB NOTE Combining TBRIDGE and SBRIDGE always produces SRTBRIDGE. sifCongested Boolean Read-Only {sifEntry 17} Whether the port is out-band congested. sifState Obsolete {sifEntry 18} sifDesigCost Obsolete {sifEntry 19} sifDesigRoot Obsolete {sifEntry 20} sifDesigBridge Obsolete {sifEntry 21} sifDesigPort Obsolete {sifEntry 22} sifRxPackets Octet String Read-Only {sifEntry 23} A 100 byte array, containing the number of received packets broken down into 25 categories.
ATX Group • OUTCOME_LOCAL =5, packet filtered (local traffic, or the destination was the ATX itself) - note that OUTCOME_LOCAL + DEST_UNKNOWN (or + DEST_MULTI for packets received on ports running the PPP protocol) indicates that the packet has been temporarily queued pending the results of ARP or IP options processing, and the unit may eventually forward the packet.
Chapter 10: Cabletron MIB sifTxPackets Octet String Read-Only {sifEntry 30} A 20 byte array, containing the number of transmitted packets broken down into 5 categories. The number of packets in each category is encoded as a series of 4 bytes, which should be converted into a 32 bit counter. The 5 categories are the DEST_xxx values, as previously described. sifTxCongests Obsolete - see ifOutDiscards.
ATX Group sifLan Integer Read-Write {sifEntry 38} Up to four group identifiers assigned to the port. This variable is used to specify port groups; the first port group entry is put into the highest order byte and all other entries follow from high order to low order. The sifLan identifier is only used by combination filter testing, i.e., for comparisons against filterSrcLan. Possible values are 0 through 255, for each of the parameter’s four bytes.
Chapter 10: Cabletron MIB sifExpectSqe Boolean Read-Write {sifEntry 43} Whether the port should expect SQE, also known as “heartbeat” (not applicable for ports other than CSMA/CD ports). sifFilterLocal Boolean Read-Write {sifEntry 44} Whether the port should attempt to filter local traffic, bypassing all statistics accumulation, rather than passing the local traffic to the Packet Processing Engine. Filtering local traffic is not available for UART and WAN ports.
ATX Group 10.3.8 Cabletron FDDI Interfaces Group sfddi {ecs-1 8} This group contains the Cabletron specific characteristics for FDDI interfaces. sfddiTable Not-Accessible {sfddi 1} A list of interface entries; one per FDDI port. sfddiEntry Not-Accessible {sfddiTable 1} A set of objects for an interface entry. The individual components are described below. sfddiIndex Integer Read-Only {sfddiEntry 1} The unit’s port number of the port.
Chapter 10: Cabletron MIB sfddiRbcErrCnts Counter Read-Only {sfddiEntry 7} The number of RBC errors (FIOM MIB only). sfddiRbcErrValue Integer Read-Only {sfddiEntry 8} Detailed status of the last RBC error (FIOM MIB only). sfddiTxAsync Integer Read-Write {sfddiEntry 9} Number of bytes to reserve in the DPC Buffer Memory for transmitting asynchronous packets. sfddiShortAddressing Boolean Read-Only {sfddiEntry 10} Whether any packets were received with 16 bit MAC addresses.
ATX Group 0x00000200 LOST, recognition that this station’s transmitted frame was lost in the course of its circulation around the ring 0x00000400 RESTRICTED, any time the R_Flag goes from reset to set; usage of this bit is reserved for future applications 0x00000800 CONGESTION, any time this station sets Ax but does not set Cx.
Chapter 10: Cabletron MIB sfddiSmtConditionsStatus Integer Read-Write {sfddiEntry 13} Requested SMT conditions which are currently present (see sfddiSmtConditions). Writing to sfddiSmtConditionsStatus is used to acknowledge the SNMP Traps (refer to chapter 11). sfddiSrfConditionsStatus Integer Read-Write {sfddiEntry 14} Requested SRF conditions which are currently present (see sfddiSrfConditions). Writing to sfddiSrfConditionsStatus is used to acknowledge the SNMP Traps (see chapter 11).
ATX Group sfddiStationDescriptor Octet String Read-Only {sfddiEntry 22} A four byte string containing the FDDI port’s Station Descriptor parameter, as defined by the SMT frame protocol. sfddiStationState Octet String Read-Only {sfddiEntry 23} A four byte string containing the FDDI ports Station State parameter, as defined by the SMT protocols.
Chapter 10: Cabletron MIB 10.3.9 Cabletron UART Interface Group suart {ecs-1 9} This group contains the Cabletron specific characteristics for UART interfaces. suartTable Not-Accessible {suart 1} A list of interface entries; one per UART port. suartEntry Not-Accessible {suartTable 1} A set of objects for an interface entry. The individual components are described below. suartIndex Integer Read-Only {suartEntry 1} The ATX’s port number of the port.
ATX Group suartModem Integer Read-Write {suartEntry 3} The expected modem signals; definitions of the different values are TBD. suartIpNeighborAddress Reserved for future use {suartEntry 4} suartPPPActive Reserved for future use {suartEntry 5} suartAlignmentErrors Counter Read-Only {suartEntry 6} Number of received packets with frame alignment errors, since the port was last enabled.
Chapter 10: Cabletron MIB Step 2. Issue a GetRequest for the fields within {filterEntry 1} to read the first combination filter. If it is for the desired port, then retain the information. Step 3. Continue issuing GetRequests for the fields within the remaining combination filters, i.e., {filterEntry n}, retaining all desired filter information, until all of the filters have been read. To modify an existing combination filter for a port, the NMS must perform the following steps: Step 1.
ATX Group The filter group consists of the following parameters: filterMaxCount Integer Read-Only {filter 1} The maximum number of combination filters that may be defined for the ATX. This is always 100. filterCurrentCount Integer Read-Only {filter 2} The number of combination filters currently defined for the ATX. filterDeleteID Integer Read-Write {filter 3} A filter identifier used for deleting filters.
Chapter 10: Cabletron MIB filterTable Not-Accessible {filter 7} A list of combination filters; one per defined filter. If fewer than filterMaxCount filters have been defined, then an additional filterEntry exists, which is used as part of the sequence for defining a new filter. filterEntry Not-Accessible {filterTable 1} A set of objects for a combination filter. The individual components are described below.
ATX Group • bit 12 used for filterOffset if set, the filterOffset field applies to the data beginning from past the IP header, rather than from the start of the translated packet. (The packet must be an IP packet with a valid IP header; if the packet is fragmented, then the packet must be the first fragment.
Chapter 10: Cabletron MIB filterFrame Integer Read-Write {filterEntry 6} Ethernet protocol type (1501-65535), or one (1) to indicate any 802 frame (i.e., those frames which would be forwarded in 802.3 format, when the destination LAN is CSMA/CD), or two (2) to indicate any Ethernet frame (i.e., those frames which would be forwarded in Ethernet format, when the destination LAN is CSMA/CD).
ATX Group filterOffset Integer Read-Write {filterEntry 14} Zero-based offset of an arbitrary field within the packet.
Chapter 10: Cabletron MIB filterPktCnts Counter Read-Only {filterEntry 20} The total number of packets which were discarded due to this filter. Under some circumstances when packets are not forwarded (e.g., local traffic, or packets that are addressed to the ATX itself as the final destination), filterPktsCnts is not necessarily incremented when the filtering criteria agrees with the packet’s contents.
ATX Group rebootIndex Integer Read-Only {rebootEntry 1} The slot number, beginning with 1 for the first slot. This number always matches the instance of the rebootEntry. For example, {rebootIndex 3} contains the value “3”. rebootType Integer Read-Write {rebootEntry 2} The desired module type of the slot. See hwDefType. rebootUseMod Integer Read-Write {rebootEntry 3} Whether to use this module, not applicable for the Packet Processing Engine. Possible values 1 or 3. See hwUseMod.
Chapter 10: Cabletron MIB 10.3.12 debug Debug Command Group {ecs-1 12} This attribute group provides access to the built-in debugging resources. Access to these functions requires the use of the configAnyPass. ! Examining the ATX’s memory is EXTREMELY DANGEROUS, and may cause it to reboot. CAUT ION To examine a ATX’s memory, the NMS must perform the following steps: Step 1. Set debugBase with the desired base address. Step 2. Set debugLength with the desired location count. Step 3.
ATX Group Step 4. Set debugOperation with the “DEBUG_MODIFY” value. All of the above “sets” must be performed in a single SetRequest PDU, with debugOperation being the last parameter. This will cause the ATX to modify the desired memory locations, update the debugLength parameter, and return the updated parameter in the GetResponse PDU. debugStringId Integer Read-Only {debug 1} The number of debug text strings sent by the unit. This parameter is used by the ATX’s enterprise specific trap mechanism.
Chapter 10: Cabletron MIB debugBase Integer Read-Write {debugEntry 3} The base address of the memory region to be examined or modified. debugLength Integer Read-Write {debugEntry 4} The desired length, in words, of the memory region to be examined or modified. After the ATX performs the operation, debugLength is updated to indicate the length of memory that was actually examined or modified. If debugLength is updated to contain zero, then the module was not operational.
ATX Group Step 2. Wait for the GetResponse PDU. If the port is not disabled (refer to ifOperStatus), then a generic link down trap PDU may be generated. Step 3. If the GetResponse did not indicate an error, then wait for (and acknowledge) the enterprise specific trap that contains the lpbkOperation parameter. [Multiple traps may be sent if there are multiple errors.] To put a port into remote loopback, the NMS must perform the following steps Step 1.
Chapter 10: Cabletron MIB lpbkIndex Integer Read-Only {lpbkEntry 1} The port number, beginning with 1 for the first port. lpbkOperation Integer Read-Write {lpbkEntry 2} The type of loopback being performed. Setting lpbkOperation to loopback-off causes loop back operation to terminate. Setting lpbkOperation to loopback-local or loopback-remote causes loopback operation to commence, and the ATX automatically resets lpbkOperation to loopback-off when the loopback operation has completed.
ATX Group lpbkGoods Counter Read-Only {lpbkEntry 8} The number of packets successfully looped back. This number is automatically reset to zero, whenever loopback operation is initiated. lpbkErrorNoReceives Counter Read-Only {lpbkEntry 9} The number of packets which were transmitted, but not received. This number is automatically reset to zero, whenever loopback operation is initiated.
Chapter 10: Cabletron MIB 10.3.14 Cabletron WAN Interface Group swan {ecs-1 14} This group contains the Cabletron specific characteristics for WAN interfaces. swanTable Not-Accessible {swan 1} A list of interface entries; one per WAN port. swanEntry Not-Accessible {swanTable 1} A set of objects for an interface entry. The individual components are described below. swanIndex Integer Read-Only {swanEntry 1} The unit’s port number of the port.
ATX Group swanOverrunErrors Counter Read-Only {swanEntry 7} Number of received packets with data overrun errors, since the port was last enabled. swanPortType Obsolete {swanEntry 8} swanLinkCost Obsolete {swanEntry 9} swanMeshState Obsolete {swanEntry 10} swanLinkSubnet Obsolete {swanEntry 11} swanLinkBridge Obsolete {swanEntry 12} swanLinkPort Obsolete {swanEntry 13} swanNegotiate Obsolete {swanEntry 14} swanSwitches Integer Read-Write {swanEntry 15} Current port selected.
Chapter 10: Cabletron MIB 10.3.15 Cabletron Repeater Interface Group srptr {ecs-1 15} This entire group is obsolete. 10.3.16 Cabletron Repeater Interface Group srepeater {ecs-1 16} This group contains the Cabletron specific characteristics for CSMA/CD interfaces which have embedded repeater capabilities. srepeaterTable Not-Accessible {srepeater 1} A list of interface entries; one per CSMA/CD port that has embedded repeater capabilities.
ATX Group srepeaterExtendedStats Integer Read-Only {srepeaterEntry 3} When enabled (1) the rptrMon, rptrMonPort, and rptrAddrTrack tables are available. The unit’s packet processing performance may be slightly degraded due to the extra processing required, although the effect will not ordinarily be noticed. When disabled (2), the rptrMon, rptrMonPort, and rptrAddrTrack tables are not available.
Chapter 10: Cabletron MIB 10.3.17 Cabletron Protocol Group sproto {ecs-1 17} This group specifies which protocols apply to each interface and allows configuration of bridging-translation between Token Ring and Ethernet for various protocols. sprotoTable Not-Accessible {sproto 1} This table contains configuration information specifying the types of protocols used to bridge, route, translate, and filter frames for each port.
ATX Group sprotoBridge Integer Read-Write {sprotoEntry 2} This variable defines the bridging method to be applied to frames received from, or destined to, this port. Ethernet and FDdI ports may be configured for: • transparent (1) • srt (3) • none (4) Token Ring ports may be configured for any of the options listed above and also for: • sr (2) The UART may only be configured to none.
Chapter 10: Cabletron MIB sprotoAppleRoute Integer Read-Write {sprotoEntry 6} Specifies whether or not this port is to be used for AppleTalk routing. either: • enabled (1) • disabled (2) sprotoArpTranslate Integer Read-Write {sprotoEntry 7} These options are intended to compensate for any likely implementation of internet ARP on 802.5 Token Ring. Options Include: • none (1) • bitswap1 (2) - then embedded MAC addresses for ARP packets with hardware type 1 (Ethernet) will be bitswapped.
ATX Group sprotoIpxTranslate Integer Read-Write {sprotoEntry 9} Specifies whether, when bridging Novell IPX frames, they are to be translated to Ethernet-like frame format. This option applies only to Token Ring ports. Either: • enabled (1) • disabled (2) sprotoAppleTranslate Integer Read-Write {sprotoEntry 10} Specifies whether, when bridging AppleTalk, ELAP, TLAP, and AARP frames, those frames are to be translated between Token Ring and Ethernet format before being forwarded.
Chapter 10: Cabletron MIB sprotoOspf Integer Read-Write {sprotoEntry 14} Specifies whether the internet Open Shortest Path First protocol is to be used over this port. Only valid if sprotoIpRoute is enabled (not currently supported). Either: • enabled (1) • disabled (2) sprotoArpProxy Integer Read-Write {sprotoEntry 15} Specifies whether the port is to respond to internet ARP requests for which the unit is the next hop in a routed path. Only valid if sprotoIpRoute is enabled.
ATX Group • none (4) If passRif (1), the frame is bridged as is, with route discovery proceeding as expected. This option allows non-source routing (e.g., Ethernet) netbios hosts to communicate transparently. If stripRif (2), then the routing information field is stripped before being propagated. If passBoth (3), then both the original source-routed frame and the transparent equivalent are propagated. This choice provides maximum connectivity at some expense in network traffic.
Chapter 10: Cabletron MIB sipxIfIndex Integer Read-Only {sipxIfEntry 1} Identifies the interface (port) to which this entry’s information belongs. The value of this variable corresponds to ifIndex, as well as to most of the other port identification values in related MIBs. sipxIfNetwork OctetString Read-Write {sipxIfEntry 2} The IPX network number (four bytes) associated with this interface. sipxIfFraming Integer Read-Write {sipxIfEntry 3} Defines the link-level framing to be used for this interface.
ATX Group sipxIfInSapPkts Counter Read-Only {sipxIfEntry 6} Number of IPX Service Advertising Protocol packets received on this interface. sipxIfOutSapPkts Counter Read-Only {sipxIfEntry 7} Number of IPX Service Advertising Protocol packets transmitted on this interface. 10.3.18.2 Route Table sipxRouteTable Not-Accessible {sipx 2} This table contains an entry for each route presently known to this router.
Chapter 10: Cabletron MIB sipxRouteHopCount Integer Read-Only {sipxRouteEntry 4} The secondary routing metric for this route, which is the number of routers that must be traversed to reach the destination. sipxRouteNextHop Octet String Read-Only {sipxRouteEntry 5} The IPX node address of the next hop of this route, if indirect. If direct, the address of the local interface. sipxRouteAge Counter Read-Only {sipxRouteEntry 6} The number of seconds since this route was last updated. 10.3.18.
ATX Group sipxSapNetwork Octet String Read-Only {sipxSapEntry 4} The IPX network address of the server providing the indicated service. sipxSapNodeId Octet String Read-Only {sipxSapEntry 5} The IPX node address of the server. With NetWare 2.x, this corresponds to a physical MAC address, represented here in canonical (little-endian) bit order. With NetWare 3.x, it is typically 000000000001. sipxSapSocket Integer Read-Only {sipxSapEntry 6} The socket number to which service requests should be addressed.
Chapter 10: Cabletron MIB srtrdiscEntry Not-Accessible {srtrdiscTable 1} srtrdiscIfIndex Integer Read-Only {srtrdiscEntry 1} Identifies the interface (port) to which this entry’s information belongs. The value of this variable corresponds to ifIndex, as well as most of the other port identification values in related MIBs. srtrdiscState Integer Read-Write {srtrdiscEntry 2} Specifies whether or not the router discovery protocol is to be used for this interface. Defaults to disabled (2).
ATX Group 10.3.20 IP Multicasting Group sipm {ecs-1 20} sipmRouteTable Not-Accessible {sipmroute 1} The (conceptual) table listing the origin routes that this router learns from neighboring routers and from initial installations of directly-connected routes. Origin is defined to be the subnetwork that can originate multicast packets. sipmRouteEntry Not-Accessible {sipmRoutetable 1} An entry (conceptual row) representing information on an origin route when IPM is enabled.
Chapter 10: Cabletron MIB sipmRouteParents Octet String Read-Only {sipmRouteEntry 6} The bitmapped incoming port (s) for which this origin is learned. This is an octet string of length 8. The least significant bit of the eighth octet is port 0. The least significant bit of the seventh octet is port 9 and so on up to a maximum of 64 ports. 10.3.20.1 IP Multicast Neighbor Table sipmNeighborTable Not-Accessible {sipmneighbor 1} The table listing the neighboring routers on each interface port.
ATX Group 10.3.20.2 IP Multicast Stat Table sipmStatTable Not-Accessible {sipmstat 2} The table containing multicast routing statistics for IP datagrams on a per port basis. sipmStatEntry Not-Accessible {sipmStatTable 1} An entry containing the multicast routing statistic for IP datagrams on a particular port. sipmStatIfIndex Integer Read-Only {sipmStatEntry 1} The interface port number on which corresponding IPM statistics gather.
Chapter 10: Cabletron MIB sipcktEntry Not-Accessible {sipcktTable 1} Defines the attributes of a binding of IP address and network to physical interface. sipcktIndex Integer Read-Write {sipckEntry 1} Identifies the physical interface. Identical to ifIndex. sipcktIpAddress IP Address Read-Write {sipckEntry 2} Identifies the Ip network that is bound to this interface. sipcktState Integer Read-Write {sipckEntry 3} The status of this binding.
ATX Group 10.3.22 sipNetToMedia Table sipNetToMediaTable Not-Accessible {ecs-1 22} An extension to the standard ipNetToMedia table, containing other ARP cache attributes, specifically the current source route to the destination. sipNetToMediaEntry Not-Accessible {sipNetToMediaTable 1} Each entry contains one IpAddress to “physical” address equivalence. Entries in this table exist even when there is no source route attached.
Chapter 10: Cabletron MIB strunkEntry Not-Accessible {strunkTable 1} An entry exists for in this table for each physical interface (port) that is configured for trunking. strunkIfIndex Integer Read-Only {strunkEntry 1} Identifies the physical interface (port) which is configured for LAN trunking. The value of this variable corresponds to ifIndex, as well as most of the other port identification values in related MIBs.
ATX Group strunkLastError Integer Read-Only {strunkEntry 5} The reason for failure when the link is in closed, oneway, or helddown state. Values include: • none (1) – no error; the trunking protocol may re-start with no error conditions when trunking is turned on for a port, or when the MIB variable that controls extra trunk groups is modified. • in-bpdu (2) – a Spanning Tree BPDU was received, indicating that the connection is not point-to-point, or the far end does not have trunking turned on.
Chapter 10: Cabletron MIB strunkLinkCount Integer Read-Only {strunkEntry 7} The number of links with the trunk group. strunkLastChange Integer Read-Only {strunkEntry 8} The number of seconds since strunkState changed. 10.3.24 IP Multicast Route ipm {ecs-1 26} ipMRouteEnable Integer Read-Write {ipMRoute 1} The enabled status of IP Multicast routing on this router.
ATX Group ipMRouteSourceMask Not-Accessible {ipMRouteEntry 3} The network mask of the source address for which this entry contains multicast routing information. ipMRouteRpfNeighbor IP Address Read-Only {ipMRouteEntry 4} The address of the RPF neighbor from which IP datagrams from this source to this multicast address are received.
Chapter 10: Cabletron MIB ipMRouteRpfFails Counter Read-Only {ipMRouteEntry 10} The number of packets which this router has received from this source and addressed to this multicast group address, which were not received from the interface indicated by ipMRouteInIfIndex. ipMRouteOctets Counter Read-Only {ipMRouteEntry 11} The number of octets contained in IP datagrams which were received from this source and addressed to this multicast group address, and which were forwarded by this router. 10.3.24.
ATX Group ipMRouteNextHopState Integer Read-Only {ipMRouteNextHopEntry 3} An indication of whether the outgoing interface and next hop represented by this entry is currently being used to forward IP datagrams. The value “forwarding” (2) indicates it is currently being used; the value “pruned” (1) indicates it is not. ipMRouteNextHopAddress IP Address Read-Only {ipMRouteNextHopEntry 4} The address of the next hop for this outgoing interface and next hop.
Chapter 10: Cabletron MIB ipMRouteInterfaceTtl Integer Read-Write {ipMRouteInterfaceEntry 2} The datagram TTL threshold for the interface. Any IP multicast datagrams with a TTL less than this threshold will not be forwarded out the interface. The default value of 0 means all multicast packets are forwarded out interface. 10.3.25 IGMP Interface igmp {ecs-1 27} igmpInterfaceTable Not-Accessible {igmp 1} The (conceptual) table listing the interfaces on which IGMP is enabled.
ATX Group igmpCacheEntry Not-Accessible {igmpCacheTable 1} An entry (conceptual row) in the igmpCacheTable. igmpCacheAddress IP Address Not-Accessible {igmpCacheEntry 1} The IP multicast group address for which this entry contains information. igmpCacheIfIndex Integer Not-Accessible {igmpCacheEntry 2} The interface for which this entry contains information for an IP multicast group address.
Chapter 10: Cabletron MIB 10.4 APPLETALK GROUP This group contains information relevant to Cabletron’s implementation of AppleTalk routing. atext {sigma 6} atextsystem {atext 1} atextport {atext 2} atextsysOperState Integer Read-Write {atextsystem 1} The operational state of AppleTalk routing. Values include off (1) and on (2). atextportTable Not-Accessible {atextport 1} A list of AppleTalk ports for this entity.
AppleTalk Group atextportNetAddress Octet String Read-Only {atextportEntry 4} The AppleTalk network address configured for this port. atextportZone Octet String Read-Only {atextportEntry 5} The default zone name configured for this AppleTalk port. atextportzipTable Not-Accessible {atextport 2} The table of zone information configured for a port. atextportzipEntry Not-Accessible {atextportzipTable 1} An entry of zone information for a particular zone and port combination.
Chapter 10: Cabletron MIB 10-102 ATX MIB Reference Guide
CHAPTER 11 TRAPS The unit sends Trap PDUs to the NMS, using the pre-configured NMS IP address (see configNMSAddress). If no address has been pre-configured, then the unit sends the Traps to the source IP address of the last SNMP datagram received from an NMS. If no address has been pre-configured, and if no datagrams have been received since the unit was booted, then the unit uses the broadcast IP address.
Chapter 11: Traps • egpNeighborLoss (5) – Not used by the unit. • enterpriseSpecific (6) – The unit is reporting some interesting information, which is contained in the “variable-bindings” portion of the PDU. If the unit has been configured to require acknowledgments to its Trap PDUs (sysTrapAck), then the NMS must acknowledge the trap, generally by issuing a GetRequest for the significant variables involved in generating the trap. All enterpriseSpecific traps specify the value of sysObjectID.0 (i.e.
Priority 1 Traps • hwDiagStatus – Included for any module which is not present or has failed power-up diagnostics. • hwDiagCode – Included for any module which has a non-zero value to report. • hwType – Included for any module which passed power-up diagnostics, but whose module type does not match the value defined for the module by hwDefType. Note that the unit’s power-up processing will attempt to automatically redefine the configured hwDefType to match the module’s actual type.
Chapter 11: Traps • rptrBasHealthState – Sent whenever the operational state of the repeater has changed. • hwDiagStatus – Sent whenever a module’s diagnostics have completed (or a module’s diagnostics were started but never completed), except for the initial diagnostics when the unit booted. The following parameters are also included, if the module’s diagnostics have completed.
Priority 1 Traps • configPowerDc1 – Sent whenever the DC output of the unit’s first power supply transitions from on to off, and vice versa. • configPowerDc2 – Sent whenever the DC output of the unit’s second power supply transitions from on to off, and vice versa. • configPowerPresent1 – Sent whenever the presence of the unit’s first power supply transitions from present to not present, and vice versa.
Chapter 11: Traps • swdisWriteStatus – Sent when a bank of Flash EPROM has been erased. If swdisWriteStatus indicates success, then the unit is ready to be downloaded with the new software. The following parameters are also included: - swdisDesc • swdisDesc – Sent in conjunction with swdisWriteStatus; swdisDesc does not need to be acknowledged. • snmpsmtUpstreamRsp – Sent when the upstream neighbor of the requested FDDI device has been learned.
Priority 1 Traps • sifRxQueues – Sent whenever the number of times that the port’s receiver has stopped receiving packets due to buffer space shortages has exceeded the port’s limit. See sifRxQueueThresh and sifRxQueueThreshTime. • sifTxStormFlag – Sent whenever multicast storm protection has been invoked for the port. • filterThreshFlag – Sent whenever usage of a port’s combination filter has exceeded the filter’s limits. See filterThreshold and filterThreshTime.
Chapter 11: Traps • IpbkOperation – Sent whenever the unit has finished a loop back test, or a loop back error has been detected. The following parameters are also included: - lpbkErrorNoReceives – Sent in conjunction with lpbkOperation; This variable does not need to be acknowledged. - lpbkErrorBadReceives – Sent in conjunction with lpbkOperation; This variable does not need to be acknowledged. • swanLinkCost – Obsolete. • swanMeshState – Obsolete. • swanLinkSubnet – Obsolete.
APPENDIX A PACKET TRANSLATION PROCEDURE When you are setting up filters, if you choose to use the Offset field, it’s helpful to know the header packet formats. Diagrams of the IP, UDP, and TCP headers are provided here for your reference. IP version header length identification TTL total length service type flags fragment offset protocol checksum source IP address destination IP address padding (if necessary) IP options (if any)...
Appendix A: Packet Translation Procedure destination port source port sequence number acknowledgment number header reserved plus length code bits options (if any)...
