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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
• CSCef35269
Symptoms: A Cisco 7500 series that has a multichannel E1 port adapter that is configured with PPP
multilink groups on several E1 channels may drop packets:
–
When dCEF is enabled, packets that are larger than 1492 bytes are dropped. Note that this
particular symptom is addressed and fixed via CSCin73658.
–
When the router has dCEF disabled, packets that are larger than 1500 bytes are dropped.
Conditions The symptom is observed on a Cisco 7500 series that runs Cisco IOS Release 12.0(28)S.
Workaround: Configure only one interface as the member of the PPP multilink group. Note that the
symptom does not occur in Release 12.0(26)S3, 12.0(27)S2, and 12.1(19)E1.
• CSCef39223
Symptoms: A secondary RSP may fail to become active.
Conditions: This symptom is observed on a Cisco 7500 series that functions in an SSO configuration
when you perform an OIR of the primary RSP.
Workaround: Do not perform an OIR of the primary RSP.
• CSCef75174
Symptoms: A router may crash when you enter the dir flash: command.
Conditions: This symptom is observed on a low-end router that uses a Compact Flash (CF) device
when the root directory is nearly full with file entries.
Workaround: Keep the number of file entries in the root directory relatively small (less than 100).
• CSCef79749
Symptoms: APS does not function correctly on a channelized OC-48 ISE line card and the output
of the show aps command shows that the line card is down.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: There is no workaround.
• CSCef87449
Symptoms: When you enter the shutdown interface configuration command on the outgoing
interface of a Traffic Engineering (TE) Label Switched Path (LSP), the Resv state should be
removed immediately. However, the Resv state remains until a PathTear arrives or a timeout causes
the TE LSP to be torn down.
When the TE headend is a Cisco router, the PathTear is sent very quickly and the state is removed.
This symptom is short-lived and it is very unlikely to be noticed.
Conditions: This symptom is observed on a Cisco router that runs a Cisco IOS software image that
contains the fix for caveat CSCec26563 when the router has MPLS TE tunnels enabled.
A list of the affected releases can be found at
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCec26563. Cisco IOS
software releases that are not listed in the “First Fixed-in Version” field at this location are not
affected.
Workaround: There is no workaround.
• CSCef95861
Symptoms: IPv6 packets may be incorrectly forwarded by a Cisco 10720 or packet forwarding
performance may be degraded significantly. Traceroute packets may be misrouted or high CPU use
may occur when IPv6 packets are punted to the Route Processor.
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