Specifications

1232
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
Conditions: This symptom is observed on a Cisco 12000 series when IP-to-tag traffic arrives from
an Engine 4+ line card and enters an Engine 0 line card that has a rate limit configured. The IP-to-tag
traffic is dropped.
Workaround: Remove the rate limit from the Engine 0 interface, and enter the shutdown command
followed by the no shutdown command on the interface.
• CSCed62375
Symptoms: A misleading error message may be seen when a Stateful Switchover (SSO) of an RP
occurs:
ATM failed to create VC(VCD=0, VPI=0, VCI=0) on Interface ATM0/0/0
Conditions: This symptom is observed on a Cisco platform that is configured for ATM.
Workaround: There is no workaround.
• CSCed62637
Symptoms: On a Catalyst 6500 series and a Cisco 7600 series FlexWAN module, the latency
experienced by the priority class traffic varies with the load of the default-class traffic, and may
exceed low-latency requirements when the link is oversubscribed with default-class traffic.
Conditions: This symptom is observed when a FlexWAN module interface with a policy map that
contains a class that is configured for low latency queueing is overloaded with default-class traffic.
Workaround: Reduce the load of default-class traffic attempting to egress via the interface.
• CSCed62835
Symptoms: A Cisco platform may crash after the following error is seen:
SCHED: Stack for process CEF IPC Background running low, 48/6000
%SYS-SP-6-STACKLOW: Stack for process CEF IPC Background running low, 48/6000
Conditions: This symptom is observed with a recursive prefix with multiple next hops when these
next hops match host routes that themselves are recursive prefixes and recurse through themselves.
Workaround: Avoid recursion loops.
• CSCed63480
Symptoms: The hw-module {slot X} command shutdown on a 4GE Eng3 that is using GEC may
freeze a router during some time, bringing down line and protocols. Under certain circumstances,
DCEF may also be disabled.
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: There is no workaround.
• CSCed64461
Symptoms: Frame Relay local switching fails when RED is applied on a Cisco 12000 series router
with a 2-port OC-3 channelized to DS1/E1 line card or a 6-port channelized T3 line card.
Also, it is observed that the controller is reset when the following is removed/reapplied:
rx-cos-slot all ToFabTable
!
slot-table-cos ToFabTable
destination-slot 0 OC3
destination-slot 1 GIGE
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: Perform the following steps: