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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)S6
• CSCse48018
Symptoms: Interface counters are double counted for tag-tag switching. This is seen on Cisco 12000
series router.
Conditions: This symptom has been observed with Engine3 card.
Workaround: There is no workaround.
• CSCse69837
Symptoms: A Cisco 12000 router with an 8OC03/ATM/TS-IR-B 8-port OC-3 ATM Line card will
reload (or require a manual reload) after the line card console is flooded with %QM-4_STUCK and
%PM622-2-SAR_POLL_TIMEOUT.
Conditions: This symptom has been observed when LSP paths change or when the core link flaps in
the network.
Workaround: Do a soft reload of the line card.
• CSCse84226
Symptoms: When a VC is down, the output of the show connection command on the local side
shows that the VC is up, even though the output of the show mpls l2 vc detail command shows that
the VC is down. The output of the show connection command on the remote side shows that the VC
is down.
Conditions: This symptom is observed on a Cisco router that is configured for AToM when the MTU
mismatches the Virtual Private Wire Service (VPWS) circuit.
Workaround: There is no workaround.
• CSCse98594
Symptoms: Engine 3 4 x 1 GigE line card stops receiving any traffic. All the packets ingressing on
the Gigabit interface are counted as overruns (rfifo_full).
Conditions: This symptom has been observed under following scenarios:
1) Misconfiguration in switched network caused broadcast storm to be flooded into the Gig port and
the port entered into stuck state and did not forward any traffic. All other ports on the same LC were
working fine.
2) In a lab scenario, the problem could be reproduced with line rate bidirectional traffic of small
sized packets (64 bytes or less) with some ARP packets prevented the Gig port for receiving any
further traffic with rfifo_full incrementing.
Workaround: Reloading the line card restores traffic on the Gig port
Further Problem description: This issue can be identified with following commands.
1. Check for increments in the following counters GigabitEthernet 0 denotes port "0" in the LC
LC-Slot3#show controllers Gigabitethernet 0 mac | inc frmLstIntRcvMacErr
frmLstIntRcvMacErr: 0x22B92568CF
LC-Slot3#show controllers Gigabitethernet 0 mac | inc rfifo_full 0 risl, 0 riq, 0 rdrop, 0 rsupp,
0 rinvalid_encap, 149148306788 rfifo_full
2. The RX queue pointers does not change while executing the below command repeatedly for few
times
LC-Slot3#show controllers Gigabitethernet 0 fpga bm queues
• CSCsf03576
Symptoms: After router reload, error msg continues coming out on console.
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