Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 11 Element Management and MIBs
Cisco uBR7246vxr MIBs
This says that a packet which matches a filter with policy id 1, first has TOS policy 1 applied
(which might set the TOS bits to enable a higher priority), and next has the IPSEC policy 3
applied (which may result in the packet being dumped into a secure VPN to a remote encryptor).
Policy ID 0 is reserved for default actions and is applied only to packets which match no filters
in docsDevIpFilterTable.
– The TOS Policy Action table is used to describe Type of Service (TOS) bits processing.
This table is an adjunct to the docsDevFilterIpTable, and the docsDevFilterPolicy table. Entries
in the latter table can point to specific rows in this (and other) tables and cause specific actions
to be taken. This table permits the manipulation of the value of the Type of Service bits in the
IP header of the matched packet as follows:
Set the tosBits of the packet to (tosBits & docsDevFilterTosAndMask) |
docsDevFilterTosOrMask
This construct allows you to do a clear and set of all the TOS bits in a flexible manner.
• CPE IP Management and anti spoofing group (docsDevCpe). (Only implemented on MTAs.)
Table 11-3 DOCS-CABLE-DEVICE-MIB.my Objects
Object Description
docsDevRole Defines the current role of this device. cm (1) is a MTA,
cmtsActive(2) is a CMTS which is controlling the system of
MTAs, and cmtsBackup(3) is a CMTS which is currently
connected, but not controlling the system (not currently used).
In general, if this device is a 'cm', its role will not change during
operation or between reboots. If the device is a 'cmts' it may
change between cmtsActive and cmtsBackup and back again
during normal operation. Note: At this time, the DOCSIS
standards do not support the concept of a backup CMTS,
cmtsBackup is included for completeness.
docsDevDateTime The date and time, with optional time zone information.
docsDevResetNow Setting this object to true(1) causes the device to reset. Reading
this object always returns false(2).
docsDevSerialNumber The manufacturer's serial number for this device.
docsDevSTPControl This object controls operation of the spanning tree protocol (as
distinguished from transparent bridging). If set to stEnabled(1)
then the spanning tree protocol is enabled, subject to bridging
constraints. If noStFilterBpdu(2), then spanning tree is not active,
and Bridge PDUs received are discarded. If noStPassBpdu(3)
then spanning tree is not active and Bridge PDUs are
transparently forwarded. Note that a device need not implement
all of these options, but that noStFilterBpdu(2) is required.
Entries in Access table:
docsDevNmAccessIndex Index used to order the application of access entries.
docsDevNmAccessIp The IP address (or subnet) of the network management station.
The address 255.255.255.255 is defined to mean any NMS. If
traps are enabled for this entry, then the value must be the address
of a specific device.