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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(32)S
CSCei93119
Symptoms: CEF may become disabled on an Engine E4+ line card because of a MALLOC failure.
Conditions: This symptom is observed on a Cisco 12000 series when you enter the no mpls ip global
configuration command immediately followed by the mpls ip global configuration command.
Workaround: There is no workaround.
CSCei94758
Symptoms: After an APS switchover, end-to-end traffic does not recover.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)SA4 and that is configured with redundant PRPs that run in RPR+ mode during a
Large Scale Network Test (LSNT). The router has two channelized OC-12 line cards that are
configured for APS and that each have 280 DS1 ports, 121 DS0 ports, and 42 MLP groups.
Workaround: There is no workaround.
CSCei94933
Symptoms: When you reload a Cisco 12000 series, the RP remains stuck for 30 minutes. No
traceback or spurious memory access is generated after the parser is released.
Conditions: This symptom is observed on a Cisco 12000 series that runs an interim release for
Cisco IOS Release 12.0(32)S when the QoS: Enhancements to Single QoS Policy Definition for a
Physical Interface (L3/1C/nD) feature is enabled on a T1 interface that is configured for Frame
Relay and that has several Frame Relay subinterfaces. The symptom occurs after the following
events:
1. The MQC policy matches the access control list.
2. You enter the match fr-dlci command.
3. You save the configuration to NVRAM by entering the copy running-config startup-config
command.
4. You reload the router.
Workaround: There is no workaround.
CSCei95220
Symptoms: When an APS switchover occurs on 1-port channelized ISE line cards, traffic may not
recover although the controllers may be in up state. The interfaces may remain indefinitely in the
up/down state.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(31)S or an earlier release when a significant amount of traffic is being processed when
the APS switchover occurs.
Workaround: There is no workaround. However, the built-in failure detection mechanism detects
that the ingress data path is locked up and automatically resets the PLIM of the affected line card.
CSCej00319
Symptoms: A router that is configured for Multiprotocol Label Switching (MPLS) Label
Distribution Protocol (LDP) may crash when LDP is configured or removed from an interface or
globally.
Conditions: This symptom is observed when parallel links are present.
Workaround: There is no workaround.
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