STATUS LINK 1 3 5 7 9 11 13 15 17 19 21 23 25 26 2 4 6 8 10 12 14 16 18 20 22 24 MON 27 STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS 100 USR LINK FDX MON RX COL STATUS TX ACT LINK PORT STATUS MODE LINK ELS10-26TX STATUS SmartSTACK 10 ELS10-26 USER GUIDE FEPIM 10BASE-T/ 100BASE-TX STATUS PWR CPU RESET COM 9032243-01 27 2X 4X 6X 8X 10X 12X 14X 16X 18X 2
Only qualified personnel should perform installation procedures. 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 DOC NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le ministère des Communications du Canada.
Notice CABLETRON SOFTWARE PROGRAM LICENSE 1. LICENSE. You have the right to use only the one (1) copy of the Program provided in this package subject to the terms and conditions of this License Agreement. You may not copy, reproduce or transmit any part of the Program except as permitted by the Copyright Act of the United States or as authorized in writing by Cabletron. 2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the Program. 3. APPLICABLE LAW.
Notice DECLARATION OF CONFORMITY Application of Council Directive(s): Manufacturer’s Name: Manufacturer’s Address: European Representative Name: European Representative Address: Conformance to Directive(s)/Product Standards: Equipment Type/Environment: 89/336/EEC 73/23/EEC Cabletron Systems, Inc. 35 Industrial Way PO Box 5005 Rochester, NH 03867 Mr. J.
CONTENTS CHAPTER 1 INTRODUCTION 1.1 1.2 1.4 1.5 ABOUT THIS MANUAL ........................................................................1-1 GETTING HELP.......................................................................................1-2 RELATED DOCUMENTATION ...........................................................1-4 OVERVIEW...............................................................................................1-4 1.5.1 SmartSTACK 10 ELS10-26 Architecture ................................
Contents 3.10 3.11 3.12 3.13 DISPLAYING MONITORING STATUS...........................................3-12 DEFINING AND DELETING WORKGROUPS ..............................3-14 ASSIGNING A COMMUNITY NAME.............................................3-16 CONFIGURING BROADCAST/MULTICAST STORM PROTECTION ......................................................................................3-17 3.14 MODIFYING MIB VARIABLES.........................................................3-18 3.15 SYSTEM CONTACT ...........
Contents CHAPTER 5 ELS10-26 DIAGNOSTICS AND TROUBLESHOOTING 5.1 POWER-UP DIAGNOSTICS ..................................................................5-1 5.1.1 Power-up LED Sequence ..............................................................5-1 5.1.2 Specific Power-up Tests ................................................................5-2 5.1.3 Software Checksum Comparison ................................................5-2 5.1.4 Power-up Diagnostics Results ..........................................
Contents viii
CHAPTER 1 INTRODUCTION 1.1 ABOUT THIS MANUAL This manual is for system administrators responsible for configuring, monitoring, and maintaining the SmartSTACK 10 ELS10-26TX. You should have a familiarity with networking concepts and principles. In addition, a basic understanding of SNMP is helpful. Some SmartSTACK 10 ELS10-26 configurations can only be done using an SNMP-based Network Management System (NMS).
Introduction • Chapter 5, ELS10-26 Diagnostics and Troubleshooting, describes the SmartSTACK 10 ELS10-26 diagnostics and provides information on troubleshooting common problems. • Appendix A, Technical Specifications, provides the SmartSTACK 10 ELS10-26 specifications and basic cabling pin assignments. • Appendix B, Glossary, provides a glossary of terms both specific to the SmartSTACK 10 ELS10-26 and common to the networking field. 1.
Introduction Before calling Cabletron Systems Global Call Center, have the following information ready: • Your Cabletron Systems contract number • A description of the failure • A description of any action(s) already taken to resolve the problem (e.g., changing mode switches, rebooting the unit, etc.) • The serial and revision numbers of all Cabletron Systems products in the network • A description of your network environment (layout, cable type, etc.
Introduction and an IP address to execute the ipaddr command: ELS10-26 >ipaddr 6 192.138.217.40 Field value options appear in bold typeface. The following conventions are also used in this document: Note: Calls the reader’s attention to any item of information that may be of special importance. Tip: Conveys helpful hints concerning procedures or actions. Caution: Contains information essential to avoid damage to the equipment.
Introduction 1.5 OVERVIEW The SmartSTACK 10 ELS10-26TX is an intelligent Ethernet-toEthernet switch that is configured with 25 IEEE 802.3 10BASE-T Full Duplex Ethernet ports, one fixed 100BASE-TX copper connection, one port supporting either a copper or fiber 100 Mbps FEPIM (Fast Ethernet Port Interface Module), and one fixed RJ45 for port monitoring of the 10 Mbps ports. It also includes an RS232C port for out-of-band management. Figure 1-1 shows the front panel for the SmartSTACK 10 ELS10-26TX. .
Introduction • Operates in either Half Duplex or Full Duplex modes on all ports. • Implements the Spanning Tree protocol (802.1d). • Configured with factory-set defaults for immediate plug-andplay capability (IP address is not configured at factory). In addition, the SmartSTACK 10 ELS10-26 offers the following features that can help you manage and maintain your network: • RMON support.
Introduction new devices to the network, change device addresses, and remove devices from the network without having to reconfigure the SmartSTACK 10 ELS10-26. The Open System Interconnection (OSI) Reference Model, developed by the International Standards Organization (ISO), identifies the levels of functionality inherent in each of its seven layers. The SmartSTACK 10 ELS10-26 operates at the Media Access Control (MAC) sub-layer of the Data Link layer. Figure 1-2 shows the OSI Reference Model.
Introduction network and when it is granted permission to transmit. In addition, full store and forward switching ensures data integrity, thus preventing network error conditions from being generated throughout the network. Discarding Local Traffic The SmartSTACK 10 ELS10-26 checks all incoming packets for their destination address against the Bridge Address Table.
Introduction By forwarding only packets addressed to devices on other network segments, the SmartSTACK 10 ELS10-26 reduces unnecessary traffic and thereby enhances the overall performance of the network. Note: If the packet address is not found in the Bridge Address Table, it will be forwarded (flooded) to all network segments. Spanning Tree Algorithm The SmartSTACK 10 ELS10-26 supports the IEEE 802.1d Spanning Tree algorithm.
Introduction If a packet’s address is not already stored in the Bridge Address Table, the SmartSTACK 10 ELS10-26 adds the learned address, associated segment number, and a timer value indicating the age of the observation. Consequently, the SmartSTACK 10 ELS10-26 knows the address and associated segment number the next time it sees that address. By using the information stored in the Bridge Address Table, the SmartSTACK 10 ELS10-26 is able to quickly forward each packet to the correct LAN segment.
Introduction 1.5.3 SmartSTACK 10 ELS10-26 Port Monitoring Port monitoring allows the SmartSTACK 10 ELS10-26 to redirect network traffic (including MAC layer errors) from one port to the port monitoring port (MONX port), in effect “mirroring” all network traffic to this port.
Introduction SmartSTACK 10 ELS10-26 Trunking The SmartSTACK 10 ELS10-26 allows two trunk groups with up to eight ports each to be connected between the SmartSTACK 10 ELS10-26 and other devices in the FastNetwork and SmartSTACK families. This capability provides a scalable dedicated bandwidth of up to 160 Mbps for 10 Mbps ports and 400 Mbps for 100 Mbps ports. For example, local traffic, such as the Manufacturing Department’s internal traffic, can be easily handled by a single, 10 Mbps connection.
Introduction Figure 1-5 illustrates how the SmartSTACK 10 ELS10-26 can be used in a backbone network configuration.
Introduction Figure 1-6 illustrates connecting two SmartSTACK 10 ELS10-26 Fast Ethernet ports to increase the bandwidth to 200 Mbps.
Introduction Figure 1-7 illustrates how the SmartSTACK 10 ELS10-26 can be used in a backbone network configuration using increased bandwidth of the Fast Ethernet configuration.
Introduction Figure 1-8 shows two Ethernet segments, A and B, that do not include a SmartSTACK 10 ELS10-26. Repeater Traffic A B Traffic Figure 1-8. Multiple Ethernet Segments Sharing 10 Mbps Bandwidth Each host on segments A and B is limited to sharing a network bandwidth of 10 Mbps.
Introduction Figure 1-9 shows two Ethernet segments that take advantage of the virtual workgroup feature of the SmartSTACK 10 ELS10-26 and the increased bandwidth applied to each A and B host.
Introduction As illustrated in the previous diagram, virtual workgroups allow you to associate multiple ports and define a workgroup. In reality, you are assigning workgroup IDs to SmartSTACK 10 ELS10-26 ports. 1.6 LOCAL CONSOLE MANAGER The Local Console Manager (LCM) is a command-line interface built into the SmartSTACK 10 ELS10-26.
Introduction 1.6.1 Command Syntax Conventions The following conventions apply as you use LCM commands: • Press the Enter key to execute a command after you type it in. • A port range is either a single port number, or a list of port numbers separated by commas or hyphens. For example, 3 is port 3; 3,7 are ports 3 and 7; 3-5 are ports 3,4, and 5; and 3-5,7 are ports 3,4,5, and 7. • To quit any command, press the Control-C keys (^C or Ctrl-C).
Introduction 1.6.2 Basic LCM Commands If you are going to manage the SmartSTACK 10 ELS10-26 using LCM, you first must connect the SmartSTACK 10 ELS10-26 to an ASCII terminal or terminal emulator. See Section 2.5, Connecting the Local Console Manager, for instructions. When you want to use LCM, begin by pressing the Enter key several times to get the LCM prompt (ELS10-26 >). Help Displays the menu of available commands. Help can also be displayed by typing a question mark (?).
Introduction ELS10-26 > help ELS10-26 Local Console Manager help or ? this menu status [PORT-RANGE] to display unit or port status baud [BAUD-RATE] to change the console baud rate exit or logout to logout erase to erase configuration information indent to display unit identification ipaddr [PORT# IPADDR [MASK]] to set or display IP addresses addresses display [any] [ADDR [MASK]] to display learned addresses bridge [PORT-RANGE [OPTIONS]] to set bridging methods clearstats to clear all p
Introduction Erase Entering erase to erase the current SmartSTACK 10 ELS10-26 configuration returns all parameters to the default values. Exit or Logout Logs you out of LCM. (The exit command is functionally equivalent to the logout command.) Traplog Displays the traps messages captured by the SmartSTACK 10 ELS10-26. The following is an example of a traplog display: ... ELS10-26TX> traplog Trap 16 0:00:00 The unit has booted. Trap 25 0:00:00 The unit’s spanning tree maximum age has changed.
CHAPTER 2 UNPACKING AND INSTALLING YOUR ELS10-26 Carefully unpack the ELS10-26 from the shipping carton and inspect it for possible damage. If any damage is evident, contact your supplier.
Unpacking and Installing Your ELS10-26 100BASE Ethernet Port Reset Switch STATUS LINK 1 3 5 7 9 11 13 15 17 19 21 23 25 26 2 4 6 8 10 12 14 16 18 20 22 24 MON 27 STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK 100 USR STATUS FDX MON RX COL LINK TX ACT LINK PORT STATUS MODE STATUS ELS10-26TX Status LEDs FEPIM 10BASE-T/ 100BASE-TX STATUS PWR CPU RESET COM 27
Unpacking and Installing Your ELS10-26 Table 2-1. Meaning of ELS10-26 LEDs LED Meaning Port Status Mode TX On – Indicates port is transmitting a packet. RX On – Indicates port is receiving a packet. ACT On – Indicates port is transmitting or receiving. COL On – Indicates a collision on a port. FDX On - Port is operating in Full Duplex. Off - Port is operating in Half Duplex. On - Port operating at 100 Mbps. Off - Port operating at 10 Mbps. On - Indicates the port is copying to the monitor port.
Unpacking and Installing Your ELS10-26 Table 2-2 describes the ELS10-26 buttons. Table 2-2. Description of ELS10-26 Buttons Button Function Status Cycles through the Segment Status options (TX, RX, Act, Col, FDX, 100, MON, and Usr) for all ports. The right-hand port status LEDs of the ports you are monitoring are activated based on what function you chose with the Select button. Reset Restarts the ELS10-26. 2.2 INSTALLING AN FEPIM Only qualified personnel should perform installation procedures.
Unpacking and Installing Your ELS10-26 Module Module Connector Standoff FE-1 00T X 10 100 Motherboard Connector Standoffs 15 16 1742-39 Faceplate Figure 2-2.
Unpacking and Installing Your ELS10-26 2.3 INSTALLING THE ELS10-26 Rack-mounting an ELS10-26 Table 2-3 describes some general considerations you should be aware of before mounting a ELS10-26 in a rack assembly. Table 2-3.
Unpacking and Installing Your ELS10-26 The ELS10-26 can be rack-mounted in a standard 19-inch equipment cabinet. To mount the ELS10-26 in a rack assembly, apply the following steps: 1. Attach the rackmount brackets to either side of the ELS10-26 chassis, as shown in Figure 2-3.
Unpacking and Installing Your ELS10-26 4. Once the ELS10-26 is installed, plug the AC power cord into the AC power connector on the rear of the ELS10-26 chassis. Plug the other end of the power cord into a three-prong grounded outlet. 2.4 CHECKING THE POWER-UP DIAGNOSTICS SEQUENCE Before connecting any devices to the ELS10-26, power on the unit and observe the power-up diagnostics sequence to check for proper operation. To observe the power-up diagnostics sequence completely, you may want to repeat it.
Unpacking and Installing Your ELS10-26 2.5 CONNECTING THE LOCAL CONSOLE MANAGER The Local Console Manager (LCM) is a command-line interface for configuring, monitoring, and managing the ELS10-26 through the out-of-band RS232C connection on the front panel. To connect the LCM: 1. Connect your ASCII terminal or terminal emulator to the outof-band management RS232C port on the front panel of the ELS10-26 using the standard RJ-45 twisted pair cable shipped with the unit.
Unpacking and Installing Your ELS10-26 Refer to Section 2.6.3 to make a fiber optic connection to an FE-100FX. 2.6.1 Connecting UTP Cables Before connecting a segment to the ELS10-26, check each end of the segment to verify wire crossover. Caution: To establish a link, you must have an odd number of crossovers (preferably one) between 10BASE-T devices of the same type (i.e., from repeater to repeater or transceiver to transceiver). Connect a twisted pair segment to the ELS10-26 as follows: 1.
Unpacking and Installing Your ELS10-26 a. Check that the 10BASE-T device at the other end of the twisted pair segment is ON and connected to the segment. b. Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts (Figure 2-7) and check the cable for continuity. TO ELS10-26 RJ-45 Port Note: RX+/RX- and TX+/TX- must share a common color pair. TO 10Base-T Device Port TX+ 1 TX- 2 1 TX+ 2 TX- RX+ 3 RX- 6 3 RX+ 6 RX- Figure 2-6. Cable Pinouts - (RJ45) Crossover Cable c.
Unpacking and Installing Your ELS10-26 determine if the wires have been crossed over for the proper connection. A schematic of a crossover cable is shown in Figure 2-6. If the wires do not cross over, use the switch on the FE-100TX to internally cross over the RJ45 port. Figure 2-7 shows how to properly set the FE-100TX crossover switch. Position X (crossed over) Position = (not crossed over) 1. TX+ 2. TX3. RX+ 4. NC 5. NC 6. RX7. NC 8. NC = x 10 100 FE-100TX 1. RX+ 2. RX3. TX+ 4. NC 5. NC 6. TX7.
Unpacking and Installing Your ELS10-26 d. Make sure that the twisted pair connection meets dB loss and cable specifications. e. Confirm that the crossover switch is in the correct position. f. Confirm that the devices on each end of the link are using the correct speed (use the LCM status command to check actual operating speed and use the speed command to display the configured speed of the port). If a Link is not established, contact Cabletron Systems Global Call Center. Refer to Section 1.
Unpacking and Installing Your ELS10-26 Caution: Do not touch the ends of the fiber optic strands, and do not let the ends come in contact with dust, dirt, or other contaminants. Contamination of the ends causes problems in data transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint-free cloth. 2. Insert one end of the SC connector into the FE-100FX installed in the ELS10-26. See Figure 2-8. 3.
Unpacking and Installing Your ELS10-26 b. Verify proper crossing over of fiber strands between the applicable port on the ELS10-26 and the fiber optic device at the other end of the fiber optic link segment. c. Verify that the fiber connection meets the dB loss specifications. If a Link has not been established, contact Cabletron Systems Global Call Center. Refer to Section 1.2, Getting Help, for details. The ELS10-26 is now ready to be set up through Local Management.
Unpacking and Installing Your ELS10-26 2-16
CHAPTER 3 CONFIGURING YOUR ELS10-26 The ELS10-26 does not require any additional configuration to operate as a standard, transparent switch. However, if you want to use any of the ELS10-26’s advanced functions, you must first assign an IP (Internet Protocol) address to any of the ports on the ELS10-26 that you use to communicate with a Simple Network Management Protocol (SNMP) manager. To initially assign an IP address, you can use the Local Console Manager (LCM).
Configuring Your ELS10-26 The following sections describe how to configure the optional parameters of the ELS10-26 using LCM commands, including: • Assigning IP addresses • Enabling and disabling bridging • Displaying bridging functions • Enabling and disabling trunking • Displaying trunking status • Defining and deleting virtual workgroups • Assigning a community name Note: You can use the LCM erase command to erase all configuration information and return the unit to default settings on the next system r
Configuring Your ELS10-26 • Class B addresses are used for medium sized networks. The first two bytes identify the network and the last two identify the node. The first byte of a class B address must be in the range 128191. The address 128.150.50.10 identifies node 50.10 on network 128.150. • Class C addresses are used for small networks. The first three bytes identify the network and the last byte identifies the port. The first byte of a class C address must be in the range 192-223. The address 192.138.
Configuring Your ELS10-26 3.1.1 Displaying IP Addresses To display IP addresses, subnet masks, and MAC addresses of all ports on the ELS10-26 you are configuring, at the LCM prompt: 1. Type ipaddr LCM displays the current IP address table, for example: Port 1 2 3 4 5 6 7 8 IP Address Address Mask MAC Address 192.138.217.1 0.0.0.0 192.138.217.10 0.0.0.0 0.0.0.0 192.138.217.20 192.138.217.50 192.138.217.30 255.255.255.0 255.0.0.0 255.255.255.0 255.0.0.0 255.0.0.0 255.255.255.0 255.255.255.0 255.255.
Configuring Your ELS10-26 To change the subnet mask, at the LCM prompt: 1. Type ipaddr For example, ipaddr 6 192.138.217.40 255.255.240.0 would set the subnet mask for port 6 to 255.255.240.0. LCM responds by redisplaying the current address table. Note: When you change the subnet mask for a port, you must also enter the IP address for that port. Make sure you enter the IP address for the port correctly; whatever you enter becomes the IP address for that port. 3.
Configuring Your ELS10-26 Using LCM to enable bridging for a port or port range, at the LCM prompt: 1. Type bridge [PORT-RANGE [{off|on|noBPDU}]] For example, bridge 2 on would enable bridging on port 2. LCM responds: Port 2 bridging: Transparent Bridging 3.3 DISABLING BRIDGING To turn off the bridging function for a port or port range, at the LCM prompt: 1. Type bridge [PORT-RANGE] off For example, bridge 2 off would disable bridging on port 2. LCM responds: Port 2 bridging: off 3.
Configuring Your ELS10-26 Usage: Port Port Port Port bridge [PORT-RANGE [{off|on|noBPDU{]] 1 bridging: Transparent Bridging 2 bridging: Transparent Bridging 3 bridging: Transparent Bridging 4 bridging: Transparent Bridging . . . Port 27 bridging: off You could also type bridge [PORT-RANGE] to look at a specific range of ports. For example bridge 2-4 would display bridging functions for ports 2, 3, and 4. 3.
Configuring Your ELS10-26 1 3 2 5 4 7 6 9 8 25 24 STATUS STATUS STATUS 23 22 LINK STATUS LINK LINK 21 20 18 LINK STATUS 19 17 16 LINK STATUS LINK STATUS 15 14 12 LINK STATUS 13 11 10 LINK STATUS LINK STATUS LINK STATUS LINK STATUS 100 USR LINK FDX MON RX COL LINK TX ACT STATUS PORT STATUS MODE LINK ELS10-26TX STATUS ELS10-26 26 MON 27 FEPIM 10BASE-T/ 100BASE-TX STATUS PWR CPU RESET 27 COM 2X 4X 6X 8X 10X 12X 14X 16X 18X 20X 22X 2
Configuring Your ELS10-26 1 3 2 5 4 7 6 9 8 25 24 STATUS STATUS 23 22 STATUS LINK STATUS LINK LINK 21 20 18 LINK STATUS 19 17 16 LINK STATUS LINK STATUS 15 14 12 LINK STATUS 13 11 10 LINK STATUS LINK STATUS LINK STATUS LINK STATUS 100 USR LINK FDX MON RX COL LINK TX ACT STATUS PORT STATUS MODE LINK ELS10-26TX STATUS ELS10-26 A 26 MON 27 FEPIM 10BASE-T/ 100BASE-TX STATUS PWR CPU RESET 27 COM 2X 4X 6X 8X 10X 12X 14X 16X 18X 20X 22X
Configuring Your ELS10-26 For ELS10-26 B, at the LCM prompt: b. Type trunk 3-10,14-15 on For ELS10-26 C, at the LCM prompt: c. Type trunk 3-10 on Each ELS10-26 determines which ports are part of which Trunk Group. After Trunk Group configuration, the ELS10-26s complete the standard 802.1D Spanning Tree state changes, treating each Trunk Group as a single 802.1D Spanning Tree port. 802.1D Spanning Tree takes about thirty seconds to resolve which ELS10-26 ports are to become forwarding ports.
Configuring Your ELS10-26 3.7 DISPLAYING TRUNKING STATUS To check the status of your current trunking configuration, at the LCM prompt: 1. Type trunk The display could look like the following: Note: IP Addresses are not required for trunking to function. ELS10-26 > trunk 2-4 Port 2 trunking joined to Bridge MAC Addr 00:40:27:00:06:1f IP Addr 192.138.217.1 Port 3 trunking joined to Bridge MAC Addr 00:40:27:00:06:c3 IP Addr 192.138.200.
Configuring Your ELS10-26 The display could look like the following: ELS10-26 > status 1 Port 1 Status Type/Speed: Port Mirroring: Duplex Mode: Bridging: Enabled/Disabled: Spanning Tree: Trunking State: Pkts Transmitted: Pkts Received: Carrier Losses: Total Collisions: Excess Collisions: RX Missed pkts: RX Runt pkts: RX FCS/Align Errs: Internal TX Errs: 10B-TPX/10Mbits No Half Duplex Transparent Bridging Enabled, Rip listening Forwarding Off 1693 0 1693 0 0 0 0 0 0 Type to display port 2 status...
Configuring Your ELS10-26 • Perturbed — Trunking is enabled, and a good trunk connection has been established. However, the forwarding of data packets is temporarily suspended to allow for a change in the membership of the Trunk Group. 3.8 ENABLING PORT MONITORING The ELS10-26 allows you to monitor the 10BASE-T ports on the ELS10-26 (you cannot monitor the 100BASE ports ). The monitoring of network traffic is performed by the ELS10-26 hardware, and the monitor image reflects the original packet.
Configuring Your ELS10-26 3.9 DISABLING MONITORING To turn off monitoring, at the LCM prompt: 1. Type Mirror off For example, mirror 2 off 3.10 DISPLAYING MONITORING STATUS To check the status of your current monitoring configuration, at the LCM prompt: 1. Type mirror The display could look like the following: ELS10-26> mirror 2 Port Mirroring: Port 2 is mirroring Tx traffic To check the status for ports configured for monitoring: 1.
Configuring Your ELS10-26 The display could look like the following: ELS10-26 > status 1 Port 1 Status Type/Speed: Port Mirroring: Duplex Mode: Bridging: Enabled/Disabled: Spanning Tree: Trunking State: Pkts Transmitted: Pkts Received: Carrier Losses: Total Collisions: Excess Collisions: RX Missed pkts: RX Runt pkts: RX FCS/Align Errs: Internal TX Errs: 10B-TPX/10Mbits No Half Duplex Transparent Bridging Enabled, Rip listening Forwarding Off 1693 0 1693 0 0 0 0 0 0 Type to display port 2 status...
Configuring Your ELS10-26 3.11 DEFINING AND DELETING WORKGROUPS The ELS10-26 allows you to define logical groups of associated ports (virtual workgroups) to provide a more efficient flow of traffic across your Ethernet network. Virtual workgroups offer you the ability to limit broadcasts to logical domains within the network.
Configuring Your ELS10-26 The LCM commands used to create the previous configuration are as follows: 1. To create workgroup A on ports 3, 4, 5, 13, and 16: ESL10-26 > workgroup A 3-5,13,16 LCM responds with the following display: Name: a Ports: 3, 4, 5, 13, 16 Info: all 2.
Configuring Your ELS10-26 To display information about a specific workgroup, at the LCM prompt: 1. Type workgroup NAME To create or modify a workgroup, at the LCM prompt: 1. Type workgroup NAME PORT-RANGE INFO To delete a workgroup, at the LCM prompt: 1. Type workgroup NAME delete To create or modify the port list for a specific workgroup, at the LCM prompt: 1. Type workgroup NAME PORT-RANGE To display the network classification of a specific workgroup, at the LCM prompt: 1. Type workgroup NAME INFO 3.
Configuring Your ELS10-26 5. LCM prompts you to verify the new community name by retyping it. 6. Retype the new community name. 3.13 CONFIGURING BROADCAST/MULTICAST STORM PROTECTION The ELS10-26 provides automatic protection against broadcast/multicast storms. Multicast storms are excessive broadcasts to all ports, typically caused by a malfunctioning device. They can result in severe network performance problems, including causing the network to crash.
Configuring Your ELS10-26 • lxifTxStormCnt – specifies the maximum number of multicasts that can be broadcast within the given time. • lxiTxStormTime – specifies the period of time that the maximum number of multicasts can be broadcasted. Refer to the ELS10-26 MIB Reference Guide for a complete listing and description of MIB variables. 3.14 MODIFYING MIB VARIABLES Specific instructions for controlling ELS10-26 operations, modifying parameters, and so on, depend on the NMS you are using.
Configuring Your ELS10-26 3.16 SYSTEM NAME The system name is a name assigned to the ELS10-26 by the network administrator. By convention, the system name is the fully qualified domain name. (This name then becomes the LCM prompt.) sysName - {system 5} DisplayString (SIZE (0..255)) 3.16.1 System Location The system location identifies the physical location of the ELS1026. sysLocation - {system 6} DisplayString (SIZE (0..255)) 3.16.
Configuring Your ELS10-26 Set Community Name The set community name variable (lxadminAnyPass) and get community name variable (lxadminGetPass) must be set to the value of the community name used by the SNMP manager for performing either set or get operations. A zero length community name means that any community name is acceptable. lxadminAnyPass - {lxadmin 2} DisplayString (SIZE (0..24)) lxadminGetPass - {lxadmin 2} DisplayString (SIZE (0..24)) 3.16.
CHAPTER 4 MONITORING AND MANAGING YOUR ELS10-26 Monitoring the ELS10-26 consists of collecting and analyzing statistics and system status information. You can use the Select button on the front panel of the ELS10-26 to monitor segment status on any of the Ethernet ports. Refer to Section 2.1 for a description of the segment status options.
Monitoring and Managing Your ELS10-26 ELS10-26 statistics are divided into four groups: • System statistics • Ethernet port statistics • Traffic analysis statistics • SNMP statistics You can use this information to analyze your overall network performance and to make configuration changes as necessary. For example, Ethernet port statistics can help you identify network devices that require high bandwidth, and therefore should be connected through a dedicated, rather than a shared, network connection.
Monitoring and Managing Your ELS10-26 • The time since a topology change was last initiated. • The physical location of the ELS10-26. • The name and address of the contact person for the ELS10-26. • The name of the ELS10-26. • The current number of dynamic (learned) addresses. Note: To check ELS10-26 system status using LCM, see Section 4.3. 4.2.3 Ethernet Port Statistics For each Ethernet port connection on the ELS10-26, a number of statistics are available.
Monitoring and Managing Your ELS10-26 4.3 USING LCM TO CHECK ELS10-26 STATUS The LCM commands that enable you to quickly check on the status of the ELS10-26 include: • Status • Address display • Ipaddr • Ident These LCM commands are described in the sections that follow. 4.3.1 Displaying Status The status command displays the status of the ELS10-26 and automatically pages through the status of all of the Ethernet ports, pausing at each screen of information.
Monitoring and Managing Your ELS10-26 Software Currently Running: version xx.xx.xx software, Tue 08/23/94 15:03 Next Bootstrap (1st bank): version xx.xx.xx software Tue 08/23/94 15:03:0 Power-up test failures: none System Up Time: 2:25:57 Current Number of Learned Addresses: 133 CPU utilization is light. Port 1 2 3 4 . . . 24 RX Packets 0 6978 0 0 . . . 0 TX Packets Collisions 1676 8 0 0 . . . 0 0 0 0 0 . . . 0 Erred Packets 1676 0 0 0 . . . 0 Type to display port 1 status...
Monitoring and Managing Your ELS10-26 If you do not want to view the status of port 2, use the Ctrl-C keys to return to the LCM prompt. You can view the status for multiple of ports by typing status and indicating the range of port numbers, for example status 2-6. 4.3.2 Displaying MAC Addresses The addresses display command displays all MAC addresses in the ELS10-26 Bridge Address Table.
Monitoring and Managing Your ELS10-26 To display all MAC addresses, at the LCM prompt: 1. Type addresses display any LCM responds with a list of all MAC addresses, their associated ports, the type, age, and number of frames from and to that address. Address Type Port 08:00:20:02:3a:44 Learned 3 Age(secs) 26 Frames-From 1 Frames-To 0 Enter to continue, Ctrl-C to exit: If you do not specify any, only the learned addresses are displayed. To display a specific address, at the LCM prompt: 1.
Monitoring and Managing Your ELS10-26 LCM would display: Address 02:04:06:03:2a:43 02:04:06:00:2a:67 02:04:06:a3:70:2b Type Learned Learned Learned Port 5 4 6 Age(secs) 21 1 0 Enter to continue, Ctrl-C to exit: Frames-From 1181 3421 15339 Frames-To 73 0 235 The ipaddr command displays the IP addresses, subnet masks, and MAC addresses of all ELS10-26 ports. At the LCM prompt: 1. Type ipaddr LCM displays the current IP address table, for example.
Monitoring and Managing Your ELS10-26 4.4 MANAGING THE ELS10-26 Managing the ELS10-26 consists of: • Disabling and enabling Ethernet ports • Changing a subnet mask • Changing a community name • Setting the baud rate of your terminal connection • Setting a reboot time You can use the Local Console Manager (LCM), any of the Cabletron Systems NMSs, or a standard SNMP-based NMS to manage the ELS10-26. Refer to Section 4.1. 4.
Monitoring and Managing Your ELS10-26 4.5.1 Disabling a Port There can be times when you need to disable a specific Ethernet port, for example, after you have determined that there is faulty equipment. Disabling a port effectively stops all bridging functions for that port. Disabled ports do not accept SNMP packets, and therefore cannot communicate with an NMS. To disable a port, or port range, at the LCM prompt: 1. Type disable For example, disable 7-9 would disable ports 7, 8, and 9.
Monitoring and Managing Your ELS10-26 For example, enable 7-9 would enable ports 7, 8, and 9. LCM responds: Port 7: Enabled, Rip listening Port 8: Enabled, Rip listening Port 9: Enabled, Rip listening Note: Rip listening means that the ELS10-26 is in listening mode only. No RIP packets are created. noRIP Option The Routing Information Protocol (RIP) is one of the protocols that allows the ELS10-26 to build an accurate, current routing table.
Monitoring and Managing Your ELS10-26 LCM displays the current IP address table, for example: Port IP Address 1 2 3 4 5 6 7 192.138.217.1 0.0.0.0 192.138.217.10 0.0.0.0 0.0.0.0 192.138.217.20 192.138.217.50 Address Mask MAC Address 255.255.255.0 255.0.0.0 255.255.255.0 255.0.0.0 255.0.0.0 255.255.255.0 255.255.255.0 00:40:27:00:06:1f 00:40:27:00:06:c3 00:40:27:00:06:3e 00:40:27:00:03:7a 00:40:27:00:05:c7 00:40:27:00:04:4a 00:40:27:00:06:9e To change the subnet mask, at the LCM prompt: 1.
Monitoring and Managing Your ELS10-26 3. Enter the new community name. LCM prompts you to verify the new community name by retyping it. 4. Retype the new community name. 4.5.5 Setting the Baud Rate You can set the baud rate for your LCM console connection. The options for baud rate include: • 1200 • 2400 • 4800 • 9600 • 19200 The default rate is 9600. Note: Make sure that the baud rate you set matches the baud rate setting for the terminal you are using.
Monitoring and Managing Your ELS10-26 To change the baud rate setting, at the LCM prompt: 1. Type baud For example, baud 9600 would set the baud rate to 9600. LCM responds: Baud rate is 9600. 4.5.6 Setting a Reboot Time You can enter the number of seconds the ELS10-26 waits before rebooting. At the LCM prompt: 1. Type reboot
CHAPTER 5 ELS10-26 DIAGNOSTICS AND TROUBLESHOOTING The ELS10-26 incorporates built-in diagnostic and testing capabilities which are convenient to use and cause minimal or no disruption to the rest of the operational network. These capabilities are effective for isolating problems within the ELS10-26 unit. Builtin diagnostic capabilities include: • System-wide power-up diagnostics, which are run every time the system is powered up or reset. 5.
ELS10-26 Diagnostics and Troubleshooting 5. After several more seconds, the CPU LED will stay on, indicating that the power-up diagnostics sequence is complete. In addition, the Port Link LEDs will turn on for those ports with good links and the Segment Status LEDs will turn on (or flash) when the selected status condition is present. Note: If a critical component fails diagnostics, the CPU LED will turn off and the ELS10-26 will attempt to reboot.
ELS10-26 Diagnostics and Troubleshooting The operational parameters of the ELS10-26 software are also protected by a checksum comparison. When the ELS10-26 reboots, if the operational parameters of the ELS10-26 fail a checksum test due to a power failure in the midst of a previous update, the ELS10-26 automatically uses its backup version of the parameters. Note: A backup version of the operational parameters is always stored in non-volatile memory before any update is attempted. 5.1.
ELS10-26 Diagnostics and Troubleshooting STATUS LINK 1 3 5 7 9 11 13 15 17 19 21 23 25 26 2 4 6 8 10 12 14 16 18 20 22 24 MON 27 STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS LINK STATUS 100 USR LINK FDX MON RX COL STATUS TX ACT LINK PORT STATUS MODE LINK ELS10-26TX STATUS Segment Status LEDs FEPIM 10BASE-T/ 100BASE-TX STATUS PWR CPU RESET COM 27 2X 4X 6X 8X 10X 12X
ELS10-26 Diagnostics and Troubleshooting Table 5-1. Meaning of ELS10-26 LEDs LED Port Status Mode TX RX ACT COL FDX 100 MON USR Meaning On – Indicates port is transmitting a packet. On – Indicates port is receiving a packet. On – Indicates port is transmitting or receiving. On – Indicates a collision on a port. On - Port is operating in Full Duplex. Off - Port is operating in Half Duplex. On - Autonegotiatian status, port operating at 100 Mbps. Off - Port operating at 10 Mbps.
ELS10-26 Diagnostics and Troubleshooting 5.4 TROUBLESHOOTING This section lists several situations that could happen while using the ELS10-26, and suggests appropriate action. Because every situation is potentially unique, the corrective actions suggested here should be considered as guidelines only. 5.5 ELS10-26 DOES NOT POWER UP If your ELS10-26 does not power up, check each one of the following: • Make sure the power source is operational. • Make sure the power cord is securely connected.
ELS10-26 Diagnostics and Troubleshooting 5.5.2 ELS10-26 Has Rebooted • Use the LCM ident command to check the ELS10-26 diagnostic codes, and call your authorized Cabletron Systems representative. 5.5.3 ELS10-26 Does Not Respond to NMS • Check the port status using LCM. • Check to see if the Spanning Tree topology is stable using LCM. • Check that a pathway to the ELS10-26 exists. • Verify the ELS10-26’s IP address using LCM.
ELS10-26 Diagnostics and Troubleshooting 5-8
APPENDIX A TECHNICAL SPECIFICATIONS A.1 ELS10-26 SPECIFICATIONS Physical Height 1.75 in (4.45 cm) Width 17 in (43.18 cm) Depth 15.75 in (40 cm) Weight 9 lb (4.
Technical Specifications Environmental Operating temperature 5° to 40° C (41° to 104° F) Storage temperature -30° to 73° C (-22 ° to 164° F) Operating relative humidity 5% to 90% (non-condensing) Diagnostic LEDs Individual port link status Individual port segment status Segment status, specifying: - Transmit activity - Receive activity - Both Transmit and Receive activity - Collision - 100 (Mbps) - Duplex - MON (monitor) - User-defined CPU Power (Pwr) Standard Support • IEEE 802.1 Part D • IEEE802.
Technical Specifications • Transparent Bridging with Spanning Tree • Ethernet Version 2 • EIA RS232C (DTE-to-DCE Interface Specification) • EIA RS-310-C (Rack-mount Specification) Address Table Size 979 dynamic entries Management Support • MIB II, 802.1d, 802.3, and Cabletron Enterprise MIB • Cabletron Systems Local Console Manager (LCM) • Any SNMP-based network management system Regulatory Compliance Safety UL 1950, CSA C22.2 No.
Technical Specifications Table A-1. DB25 Pin Assignments ELS10-26 RJ45 (female) DB25-pin (female) Pin 1 (Tx) Pin 3 Pin 4 (Rx) Pin 2 Pin 5 (GND) Pin 7 Table A-2. DB9 Pin Assignments ELS10-26 RJ45 (female) DB9 pin (female) Pin 1 (Rx) Pin 2 Pin 4 (Tx) Pin 3 Pin 5 (GND) Pin 5 A.3 10BASE-T PIN ASSIGNMENTS An Ethernet twisted-pair link segment requires two pairs of wires. Each wire pair is identified by solid and striped colored wires.
Technical Specifications Each twisted-pair link segment must have a male connector attached to both ends. According to the 10BASE-T specification, pins 1 and 2 on the connector are used for receiving data; pins 3 and 6 are used for transmitting data, as shown in Table A-3. Table A-3. 10BASE-T Pin Assignments Assignmenta Pin 1 Rx+ 2 Rx- 3 Tx+ 6 Txa. The “+” and “-” signs are used to represent the polarity of the two wires that make up each wire pair. A.
Technical Specifications A.5 CROSSOVER WIRING Two ELS10-26s can communicate only if the transmitter on one unit is connected to the receiver on the other unit. This reversal, or crossover function, can be implemented either in the wiring or in the device itself. When connecting ELS10-26s, a crossover must be implemented in the wiring. Refer to Table A-5 for crossover pin assignments. Table A-5.
Technical Specifications A.7 FEPIM SPECIFICATIONS The ELS10-26 uses a Fast Ethernet Interface Module (FEPIM) to provide front panel cable connections. FEPIMs are user-installable. See Section 2.2, Installing an FEPIM. FE-100TX The FE-100TX is an RJ45 connector supporting Unshielded Twisted Pair (UTP) cabling. The slide switch on the FE-100TX determines the crossover status of the cable pairs. If the switch is on the X side, the pairs are internally crossed over.
Technical Specifications SP FE-100FX Figure A-3. FE-100FX Table A-6. Transmitter Power Cable Type Worst Case Budget Typical Budget 50/125 µm fiber 6.0 dB 9.0 dB 62.5/125 µm fiber 9.0 dB 12.0 dB 100/140 µm fiber 15.0 dB 18.0 dB The transmitter power levels and receive sensitivity levels listed are Peak Power Levels after optical overshoot. A Peak Power Meter must be used to correctly compare the values given above to those measured on any particular port.
APPENDIX B GLOSSARY address A set of characters that uniquely identifies a station, peripheral device, node, or other unit in a network. address table A database of device addresses and their associated ports maintained by a switch or bridge for use in making data packet forwarding and filtering decisions. agent Network management software that runs within a managed network device. alarm See trap.
Glossary backbone The major, central transmission path for a network. A backbone usually handles high-volume, high-density traffic. Typically a backbone connects various LANs into an integrated network. bandwidth A measure of the amount of traffic a given medium can handle at one time: The communications capacity (measured in bits per second), of a transmission line or of a specific path through a network.
Glossary congestion A condition where a portion of the network is overloaded with more data than can be transmitted in the desired time period. CSMA/CD (carrier-sense multiple access with collision detection) A channel access (contention) method that requires each station to wait for an idle channel before transmitting. In addition, stations are able to detect overlapping transmissions (collisions) and retransmit in the event of a data collision. data link layer Layer 2 in the OSI model.
Glossary encapsulation A method for moving messages across networks that use different types of protocols. The message is encapsulated (rather than translated), so it can move across a network that otherwise could not understand its protocol. Encapsulating bridges and switches generally use proprietary encapsulation schemes. encode To translate data into a series of electrical or optical pulses that can travel efficiently over a cable or other medium.
Glossary ICMP (Internet control message protocol) An auxiliary protocol of IP used to convey advice and error messages about events in the IP layer. IEEE (Institute of Electrical and Electronic Engineers) International professional society which issues networking and other standards. The IEEE created the 802 family of LAN standards. IEEE 802.2 The data link layer standard; used with IEEE 802.3, 802.4, 802.5, and other LAN/WAN protocols. IEEE 802.
Glossary internetworking The linking of one or more networks to facilitate communication across networks. interoperability The ability of equipment from multiple vendors to exchange information using standardized protocols. IP (Internet protocol) IP is the basic datagram protocol used at the network layer of the TCP/IP stack. ISO (International Standards Organization) An organization that creates, controls and publishes standards. jitter Clocking deviation on a network.
Glossary MAC (media access control) The data link layer sublayer responsible for scheduling, transmitting, and receiving data on a shared medium local area network. mask Specified a subset of a larger set of data to be included for comparison and analysis. For example, in switch filtering, a mask might be configured to include only the first four address bits as the basis for filtering decisions. Mbps (megabits per second) 1 million bits per second.
Glossary OSI (Open Systems Interconnection) Refers to the OSI reference model, a logical structure for network operations. OSI is the internationally accepted framework of standards for internetwork communication. packet A group of bits including data and control elements arranged in a specific format that are transmitted and switched as a composite whole. Control elements include a source address, destination address, frame control and status indicators, and a Frame Check Sequence (FCS).
Glossary protocol A set of rules used by computers and related devices to communicate with each other. protocol suite A group of protocols related to a common framework. RARP (reverse address resolution protocol) A protocol that binds MAC addresses to specific IP addresses. RISC (Reduced Instruction Set Computing) A data processing technology in which functions are performed using the least possible number of instructions to yield very fast processing.
Glossary switch An intelligent, protocol independent device used to connect similar or dissimilar LANs. symbol The smallest signaling element used by the MAC sublayer. Each symbol corresponds to a specific sequence of code bits to be transmitted by the physical layer. synchronous transmission A transmission technique in which an uninterrupted block of data is transmitted, using no redundant information such as stop and start bits to identify the beginning and end of a unit of data.
Glossary upstream Refers to the relative position of a station in a network to another station in the same network. A station is upstream from its neighbor if it receives data before its neighbor receives the data. WAN (wide area network) A communication network that spans a large geographic area.
Glossary B-12
INDEX Numerics 10BASE-T connection 2-10 10BASE-T pin assignments A-4 5 - 4 - 3 rule A-6 802.
Index disabling bridging functions 3-6 ports 4-10 trunking 3-10, 3-14 displaying baud rate 4-13 bridge functions 3-6 FastNET 10 status 4-4 IP addresses 3-4, 4-8, 4-11 MAC addresses 4-7 manufacturing information 4-8 Document Conventions 1-3 dynamic entry Bridge Address Table 1-10 E enabling bridging functions 3-6 Ethernet ports 4-10 trunking functions 3-9 environmental specifications A-2 erase configuration 3-2 Ethernet port statistics 4-3 F FastNET 10 management tools 4-1 FastNET 10 Bridge Address Table 1
Index multicast storm protection defined 3-19 MIB variables 3-19 N Network connection FE-100FX 2-13 FX-100TX 2-11 non-volatile memory 5-3 noRIP option 4-11 O or 1-22 OSI Reference Model 1-7 P pin assignments 10BASE-T A-4 straight-through RJ-45 A-5 Port Link LEDs 2-3, 5-5 Port Status LEDs 2-3, 5-5 ports disabling 4-10 enabling 4-10 Power (Pwr) LED 2-3 power-up LED sequence 2-8, 5-1 power-up diagnostics 2-8, 5-1 results 5-3 specific tests 5-2 R rack-mount installation 2-7 Ready LED 2-3 reboot 4-14 Reset b
Index W wiring crossover A-6 straight-through A-5 I-4
