Specifications

1345
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S2
• CSCed89629
Symptoms: A VIP4-80 may crash when you enter the police command for a policy map that is
applied to an ATM subinterface PVC in the input direction.
Conditions: This symptom is observed on a Cisco 7500 series that runs Cisco IOS
Release 12.0(26)S or 12.0(27)S.
Workaround: Do not enter the police command for a policy map that is applied to an ATM
subinterface PVC.
• CSCed89963
Symptoms: A Cisco 12000 series may experience a block overrun and redzone corruption with a
subsequent system reload or switchover as a result of incorrectly processing a corrupted packet.
Error messages similar to the following may be observed:
%GRP-4-CORRUPT: Corrupted packet, start_offset 96, length 65534, slot 9
%SYS-3-OVERRUN: Block overrun at 53E4389C (red zone 00000000)
Conditions: This symptom may be observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0 S and that has 1, 3, or 4 port Gigabit Ethernet line cards installed.
Workaround: There is no workaround.
• CSCed90701
Symptoms: The packet queue size on an MLP bundle may be larger than necessary, which may
manifest as two separate symptoms:
– The scalability during configuration of multiple MLPPP interfaces is reduced because the router
may run out of resources to allocate the packet queues.
– The effect of congestion may be more severe as traffic that should have been dropped due to the
queue overflow will not be dropped.
Conditions: This happens after the reload of a Cisco 10000 series with a policy map attached to an
MLP interface or when more links are added to an MLP interface.
Workaround: After any MLP bundle change (either by configuration, bootup, or link failure) delete
and reattach the service policy to the interface.
• CSCed90731
Symptoms: The priority traffic on an MLP interface may exceed the configured bandwidth limits.
Conditions: This symptom is observed on a Cisco 10000 series when new links are added to an MLP
interface that already has a policy map with a priority class attached. The link addition may happen
as result of a system bootup or a link flap, or a user may add more links to the bundle by
configuration.
Workaround: Once the interfaces that are associated with the MLP bundle are up, remove and
reattach the service policy to the MLP bundle. If links associated with the bundle flap, the policy
may have to be removed and reattached again.
• CSCed90846
Symptoms: A class that contains the priority percent percent command and that is loaded at or
greater than the specified rate leaves other classes with less than their fair bandwidth and adversely
affects their bandwidth ratio.
Conditions: This symptom is observed on Cisco 10000 series network interfaces at or above OC-3
speed.
Workaround: There is no workaround.