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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(31)S
• CSCef69066
Symptoms: The set fr-fecn-becn policy-map class configuration command may not take effect.
Conditions: This symptom is observed on a Cisco 7500 series.
Workaround: Enter the command again.
• CSCef70242
Symptoms: Low latency queueing (LLQ) and class-based weighted fair queueing (CBWFQ) may
not function for MPLS packets. The MPLS packets that conform to the bandwidth that is allocated
to these classes may be dropped.
Conditions: This symptom is observed on a Cisco 7200 series that runs Cisco IOS Release 12.2S
when MPLS packets leave an interface that has an output policy map with priority or bandwidth
commands, or both, configured within its classes. The symptom may also occur in other releases.
Workaround: There is no workaround.
• CSCef70566
Symptoms: After you have configured an ACL on a router to deny a traffic stream, traffic is shaped
unexpectedly.
Conditions: This symptom is observed when the no access-list command fails while a nonvolatile
generation (NVGEN) occurs.
Workaround: There is no workaround.
• CSCef70953
Symptoms: An Engine 4+ line card resets when you enter the shutdown interface configuration
command followed by the no shutdown interface configuration command on an interface of an
Engine 3 Gigabit Ethernet (GE) line card in the same router.
Conditions: This symptom is observed on a Cisco 12000 series that functions in an EoMPLS
configuration, that has an Engine 3 Gigabit Ethernet egress line card and an Engine 4+ core-facing
line card, and that has CDP is enabled.
Workaround: Disable CDP.
• CSCef72411
Symptoms: Line cards and the standby RP on a Cisco 12000 series may fail when an RP switchover
occurs.
Conditions: This symptom is observed on a Cisco 12000 series that runs a Cisco IOS interim release
for Release 12.0(30)S and that has two PRPs when you enter the redundancy force-switchover
command. Note that this caveat is resolved in Release 12.0(30)S.
Workaround: There is no workaround.
Further Problem Description: The fix for this caveat enables the RP to recover from a Fabric
Interface ASIC (FIA) halt condition if this condition occurs following an RP switchover. In a Cisco
IOS software release that does not integrate the fix for this caveat, the RP does not attempt to recover
from a FIA halt condition after an RP switchover has occurred (but it does attempt to recover from
such a conditions in other situations).
• CSCef77337
Symptoms: An IPv6 ACL is not properly applied to multiple interfaces.
Conditions: This symptom is observed on a Cisco 12000 series when an IPv6 ACL is applied to
multiple interfaces (that is, four or more) and is modified to exceed layer 4 operating capabilities
that can be supported in hardware.
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