Specifications

1122
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S2
• CSCef53395
Symptoms: A memory leak may occur in the IPC buffers of a Cisco router, and the output of the
show processes memory command shows that the Pool Manager process holds increasingly more
memory.
Router#show proc mem
Total: 231201504, Used: 202492916, Free: 28708588
PID TTY Allocated Freed Holding Getbufs Retbufs Process
...
5 0 149227592 69514888 79894996 135335724 66834832 Pool Manager
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(26)S2 or 12.0(26)S3. The memory leak is triggered by the SNMP polling of specific
OIDs within the ciscoEnhancedMemPoolMIB MIB.
Workaround: Prevent the ciscoEnhancedMemPoolMIB MIB from being polled by explicitly
configuring an SNMP view. To prevent this MIB from being accessed via any community strings,
create a view and apply the view to all communities configured, as in the following example:
snmp-server view NOMEMPOOL iso included
snmp-server view NOMEMPOOL ciscoEnhancedMemPoolMIB excluded
snmp-server community public1 view NOMEMPOOL ro 6
snmp-server community public2 view NOMEMPOOL ro 7
snmp-server community public3 view NOMEMPOOL ro 8
The specific MIB that is being blocked is ciscoEnhancedMemPoolMIB (1.3.6.1.4.1.9.9.221).
Once the configuration is in place, the router must be reloaded to clear the IPC cache and free the
memory.
• CSCeg50224
Symptoms: A standby PRE may crash because of an SNMP set operation during an SSO switchover.
Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS
Release 12.0(28)S1. The symptom may be platform-independent.
Workaround: There is no workaround.
Interfaces and Bridging
• CSCef79968
Symptoms: When an snmpget is executed for an interface index below .1.3.6.1.2.1.31.1.1.1.6, the
router responds with the following information:
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.12 : VARBIND EXCEPTION: No Such
Instance
However, an snmpwalk executes successfully for an interface index below .1.3.6.1.2.1.31.1.1.1.6.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(26)S3 when an snmpget is executed for 4GE-SFP-LC subinterfaces or for a
4GE-SFP-LC interface when there is another interface index for the same interface. The symptom
may be platform-independent.
Workaround: Reload the router.