Cisco Cisco IOS Software Release 12.4(23)
480
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(8d)
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CSCsg21398
Symptoms: The Cisco IOS software image may unexpectedly restart when a crafted
“msg-auth-response-get-user” TACACS+ packet is received.
“msg-auth-response-get-user” TACACS+ packet is received.
Conditions: This symptom is observed after the Cisco platform had send an initial “recv-auth-start”
TACACS+ packet.
TACACS+ packet.
Workaround: There is no workaround.
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CSCsg48183
Symptoms: A router may unexpectedly send an ARP request from all its active interfaces to the
nexthop of the network of an SNMP server.
nexthop of the network of an SNMP server.
Conditions: This symptom is observed on a Cisco router that has the snmp-server host command
enabled after any of the following actions occur:
enabled after any of the following actions occur:
–
You reload the router.
–
A switchover of the active RP occurs.
–
You enter the redundancy force-switchover main-cpu command.
Workaround: There is no workaround.
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CSCsg48725
Symptoms: A TLB exception may occur on a Cisco platform that functions as a PE router in an
MPLS environment, and the following error message may be generated:
MPLS environment, and the following error message may be generated:
TLB (load or instruction fetch) exception, CPU signal 10 (BadVaddr : DEADBEF3)
Conditions: This symptom is observed on a Cisco platform when TACACs accounting and
authorization is enabled and when the TACACs server is reachable through the global routing table.
authorization is enabled and when the TACACs server is reachable through the global routing table.
Workaround: Disable AAA. If this not an option, there is no workaround.
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CSCsj44081
Cisco IOS Software has been enhanced with the introduction of additional software checks to signal
improper use of internal data structures. This enhancement was introduced in select Cisco IOS
Software releases published after April 5, 2007.
improper use of internal data structures. This enhancement was introduced in select Cisco IOS
Software releases published after April 5, 2007.
Details: With the new enhancement in place, Cisco IOS software will emit a
%DATACORRUPTION-1-DATAINCONSISTENCY error message whenever it detects an
inconsistency in its internal data structures. This is a new error message. The following is an
example.
%DATACORRUPTION-1-DATAINCONSISTENCY error message whenever it detects an
inconsistency in its internal data structures. This is a new error message. The following is an
example.
The %DATACORRUPTION-1-DATAINCONSISTENCY error message is preceded by a timestamp
May 17 10:01:27.815 UTC: %DATACORRUPTION-1-DATAINCONSISTENCY: copy error
The error message is then followed by a traceback.
It is important to note that this error message does not imply that packet data is being corrupted. It
does, however provide an early indicator of other conditions that can eventually lead to poor system
performance or a Cisco IOS software restart.
does, however provide an early indicator of other conditions that can eventually lead to poor system
performance or a Cisco IOS software restart.
Recommended Action: Collect “show tech-support” command output and open a service request
with the Technical Assistance Center (TAC) or designated support organization. Pay particular
attention to any other error messages or error symptoms that accompany the
%DATACORRUPTION-1-DATAINCONSISTENCY message and note those to your support
contact.
with the Technical Assistance Center (TAC) or designated support organization. Pay particular
attention to any other error messages or error symptoms that accompany the
%DATACORRUPTION-1-DATAINCONSISTENCY message and note those to your support
contact.