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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(33)S1
Conditions: Anyphy value changes after channel group BERT for an interface if another interface
on the same SPA with a lower anyphy value is deleted.
Workaround: Reload the line card.
• CSCsl36013
Symptoms: A Cisco 12000 series router with an Engine 0 ATM OC12 line card may experience a
problem in which a Layer 2 adjacency rewrite string for an ATM PVC becomes invalid. The invalid
rewrite results in packets being forwarded out the interface with the wrong Layer 2 details
prepended.
Conditions: This symptoms is observed on a Cisco 12000 series router with an Engine 0 ATM OC12
line card.
Workaround: Use the following command for the affected IP address:
clear ip arp x.x.x.x
Further Problem Description: This problem can be identified using the execute-on [slot#] show
controller rewrite Cisco IOS command, compared to the rewrite string in the show adjacency
internal command:
Router# execute-on 1 show controller rewrite
========= Line Card (Slot 1) =========
Local MAC rewrite table Interface Address Output_Info
-------------------------------------------------------- ... ATM1/0.1 192.168.1.1 0x1C062340
4BA72000AABA031180C2000700000004 757122D600081008B0560800 <-- incorrect ...
Router# execute-on all show adjacency internal
========= Line Card (Slot 1) =========
Protocol Interface Address ... IP ATM1/0.1 192.168.1.1(9) 131229862 packets, 74135640171 bytes
02710100AABA031180C2000700000017 E0DC040200072009B0450800 <-- correct ...
Router# clear ip arp 192.168.1.1
Router# execute-on 1 show controller rewrite
========= Line Card (Slot 1) =========
Local MAC rewrite table Interface Address Output_Info
-------------------------------------------------------- ... ATM1/0.1 192.168.1.1 0x1C025340
6EA82000AABA031180C2000700000017 E0DC040200072009B0450800 <-- correct ...
• CSCsl36723
Symptoms: A SIP401/SIP600 may crash upon a primary CSC failover. FIA Halt related error
messages are also seen.
Conditions: This symptom is observed upon a primary CSC failover.
Workaround: There is no workaround.
• CSCsl41107
Symptoms: When explicit-null packets are received on URPF bundle, there is a possibility of BMA
errors and crash.
Conditions: Occurs when explicit-null and URPF are configured.
Workaround: There is no workaround.
• CSCsl43394
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