Specifications

1229
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
• CSCed52163
Symptoms: When the HSRP MIB is polled and there are HSRP groups configured on subinterfaces,
an error such as “OID not increasing” may occur on the device that is polling the router. In some
cases, a CPUHOG traceback may occur on a router when the HSRP MIB is polled, especially when
a lot of interfaces are configured.
Conditions: This symptom is observed under either one of the following two conditions:
– An SNMP HSRP query triggers a loop in the getnexts. Some MIB browsers catch this, and exit
with a message stating “OID not increasing”.
– A scaling problem may occur with HSRP when there are a high number of tracked interfaces.
For every standby track statement, every interface is tested to see if it is an HSRP tracked
interface. No defined thresholds have been identified and tested that qualify when this scaling
problem may occur. The more interfaces there are configured, the greater is the possibility that
the problem occurs.
Workaround: Do not initiate an SNMP query for HSRP.
Alternate Workaround: Enter the snmp-server global configuration command to specify which
MIBs are available, as in the following example:
snmp-server view HSRP internet included
snmp-server view HSRP ciscoHsrpMIB excluded
snmp-server view HSRP ciscoHsrpExtMIB excluded
snmp-server community public view HSRP RW 20
snmp-server community private view HSRP RW 20
• CSCed52578
Symptoms: The MPLS packets are forwarded with a bogus label when they are sent out on a
loadshared non-VRF MPLS enabled “Internet” interface from a VRF.
Conditions: A static route for the VRF should be configured to reach the Internet, which would in
turn be configured to recurse over 2 static routes to reach the next hop for the global Internet.
Workaround: Shut down one of the interfaces to remove the load-sharing condition.
• CSCed54236
Symptoms: A Cisco router reloads due to memory allocation problem when per packet load
balancing is changed to default CEF load balancing.
Conditions: This symptom is observed on a Cisco 7200 series router with a PA-4T serial adapter
when the service-policy output name command is applied to this interface. The problem is observed
in Cisco IOS Release 12.0(26)S1 and Release 12.0(27)S.
Workaround: Use per-packet loadbalancing, remove the service-policy output name command, or
replace the adapter with a PA-4T+.
• CSCed54262
Symptoms: Memory allocation (MALLOC) failures may occur on a VIP, port adapter, or line card.
Conditions: This symptom is observed on a Cisco router that has a scaled AToM configuration.
Workaround: There is no workaround.
• CSCed54342
Symptoms: A reload occurs that sends a Cisco 10000 series router into ROMMON state.
Conditions: This symptom occurs after configuring CHOC3 interfaces and then performing the shut
command followed by the no shut command. The reload sends the Cisco 10000 series router into
ROMMON state.