Specifications

1088
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S4
Conditions: This symptom is observed on a Cisco 10000 series when two PREs are forced to
switchover back and forth.
Workaround: Enter the snmp-server ifindex persist command.
• CSCef70328
Symptoms: A VPN traceroute is broken, and packets are dropped from a router on which a port
channel is configured as the default route.
Conditions: This symptom is observed on a Cisco router that functions as a CE router on which a
port channel is configured as the default route. The adjacency that causes the packets to be dropped
is a drop or punt adjacency.
Workaround: Do not configure a port channel as a default route.
• 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 not listed in the “First Fixed-in Version” field at this location are not affected.
Workaround: There is no workaround.
• CSCef97190
Symptoms: The “giants” counter increments continuously for a serial T1 interface when MR-APS
is configured on a 4-port channelized STM-1 line card. The symptom occurs even when the fiber is
pulled from the OC-3 port.
Conditions: This symptom is observed on a Cisco 10000 series that runs Cisco IOS
Release 12.3(7)XI1 when the serial T1 interface is in the inactive state, irrespective of whether it is
the working interface or the protect interface. The symptom does not occur when the serial T1
interface is in the active state, again irrespective of whether it is the working interface or the protect
interface. The symptom may also occur in other releases.
Workaround: There is no workaround.
• CSCeg26528
Symptoms: The performance of a router may be severely degraded (at approximately 90 percent of
the line rate) when large packets are processed, when the MLP bundle link flaps, and when the router
does not recover the MLP sequence numbers of the packets.
Conditions: This symptom is observed on a Cisco 7500 series and Cisco 7600 series that are
configured for dMLP only when large packets are processed.
Workaround: There is no workaround.
• CSCeg35670
Symptoms: Shortly after a Cisco IOS software boot loader image has been downloaded, a PRP-2
may crash and does not reload.