Cisco Cisco IOS Software Release 12.4(4)T
1406
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(2)T2
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Symptoms—A description of what is observed when the caveat occurs.
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Conditions—The conditions under which the caveat has been known to occur.
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Workaround—Solutions, if available, to counteract the caveat.
Basic System Services
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CSCeh65692
Symptoms: Spurious memory access errors and tracebacks may be generated on a Cisco AS5800.
Condition: This symptom is observed on a Cisco AS5800 that processes TCPclear calls.
Workaround: There is no workaround.
IP Routing Protocols
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CSCei06089
Symptoms: Conditional advertisement of the default route via a route map does not work when you
enter the neighbor default-originate command.
enter the neighbor default-originate command.
Conditions: This symptom is observed on a Cisco router that is configured for BGP.
Workaround: Disable the route map entirely. If this is not an option, there is no workaround.
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CSCsa87473
Symptoms: A BGP speaker may fail to send all of its prefixes to a neighbor if the neighbor sends a
refresh request to the BGP speaker at the same time that the BGP speaker is generating updates to
the neighbor. This situation causes the neighbor to miss some prefixes from its BGP table.
refresh request to the BGP speaker at the same time that the BGP speaker is generating updates to
the neighbor. This situation causes the neighbor to miss some prefixes from its BGP table.
Conditions: This symptom may occur between any pair of BGP speakers.
A common scenario is that a VPNv4 PE router is reloaded and then fails to learn all prefixes from
its route reflector (RR). In this configuration, the symptom occurs when the processing of a VRF
configuration causes the PE router to automatically generate a route-refresh request to the RR, while
the RR is still generating updates to the PE.
its route reflector (RR). In this configuration, the symptom occurs when the processing of a VRF
configuration causes the PE router to automatically generate a route-refresh request to the RR, while
the RR is still generating updates to the PE.
Workaround: There is no workaround.
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CSCsb13988
Symptoms: A router that is configured for NAT may crash because of a bus error.
Conditions: This symptom is observed on a Cisco 7206VXR that runs Cisco IOS Release 12.3(9a)
but is not platform-specific. The crash occurs while NAT attempts to translate an IP address in an
H.323 RAS messages that does not contain an IP address.
but is not platform-specific. The crash occurs while NAT attempts to translate an IP address in an
H.323 RAS messages that does not contain an IP address.
Workaround: Disable H.323 RAS in NAT by entering the no ip nat service ras command. If you
must use H.323 RAS in NAT, there is no workaround.
must use H.323 RAS in NAT, there is no workaround.
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CSCsb25662
Symptoms: When an IP phone that is located at a central site leaves a conference, a one-way voice
condition occurs for the remaining two phones in the conference.
condition occurs for the remaining two phones in the conference.