Specifications
1267
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S5
Conditions: This symptom occurs only if the above (or similar) sequence of adding and deleting
subinterface is done.
Workaround: Do not delete and re-add the same subinterface. Instead, enter the shut command and
then the no shut command. The same effect is achieved without running into the above symptom.
• CSCeh49881
Symptoms: In a tag switching-to-IP switching scenario with an ISE ingress line card and an
Engine 4 plus (E4+) egress line card, the following bad packets may be forwarded to the E4+ line
card:
–
tag2ip, with bad ip hdr cksum
–
tag2ip, with ip->tl > L2
–
tag2ip, with ip->tl < 20
–
tag2ip, with ip options packets
–
tag2ip, with ip options packets with bad ip hdr cksum
–
tag2ip, with ip options packets with ip->tl > L2
–
tag2ip, with ip options packets with ip->tl < 20
These bad packets cause packet corruption and an "TX192-3-PAM_PIM" error message on the E4+
line card and may even cause the E4+ line card to reset.
Conditions: This symptom is observed on a Cisco 12000 series.
Workaround: There is no workaround.
Further Problem Description: The fix for this caveat enables the ISE line card to drop the
above-mentioned bad packets.
• CSCeh60185
Symptoms: An Engine 4 plus (E4+) line card that functions in an IP-to-tag switching scenario may
generate "TX192-3-PAM_MODULE" and "%TX192-3-PAM_PIM" error messages and tracebacks
or may crash.
Conditions: This symptom is observed on a Cisco 12000 series when the ingress interface is an
Engine 2 line card that has an input ACL and when an external LDP flap occurs that affects the
Engine 4+ line card.
Workaround: There is no workaround.
• CSCin67741
Symptoms: The Route Processor (RP) crashes when encapsulation is removed using the no
encapsulation command.
Condtions: This symptom has been observed on a multilink interface with DLFI configuration under
traffic.
Workaround: There is no workaround.
• CSCin87776
Symptoms: Multilink bundles on a Cisco 7500 series may process-switch traffic instead of using
dCEF, causing the CPU usage of the RSP to increase sharply and a CPU hog condition to occur.
Conditions: This symptom is observed when an RPR+ switchover occurs on a Cisco 7500 series that
is configured for HA.(The switchover causes an MLP to flap.) However, the symptom may also
occur on a Cisco 7500 series that has a single RP (so, without a switchover) when an MLP link flaps.