Cisco OL-4015-08 Bedienungsanleitung Seite 162

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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)S11
CSCsk98123
Symptoms: Tx traffic may get dropped due to a “precam 1 exception.
Conditions: This symptom is observed when vrf vlite and strict urpf are configured on the interfaces.
This happens in all releases when adjacency indexes between 65528 to 65531 are used in TX SRAM
Adjacency programming on line cards. This happens only on port 0. Strict URPF not a required
condition. It can happen without that.
Workaround: To recover from the situation, remove and re-apply the configuration on the interface
when the problem is seen. To recover from the condition, shut and no shut of the interface is fine
provided it does not get adjacency index allocated within 65528 and 65532. If URPF/PBR is
configured or removed, then also it gets cleared.
Alternate Workaround: Do not use port 0 on the line card. Using a subinterface will mitigate the
issue.
CSCsl05174
Symptoms:
Issue 1: A non-deleted PPP configuration inside the interface reappears when the interface is
created again.
Issue 2: Some multilink configuration is not being synced to the standby (hold-queue).
Conditions: This symptom is observed when running RPR+.
Workaround: Reapply the original configuration.
Further Problem Description: Deletion of a multilink interface and subsequent creation using the
same name may cause portions of the original configuration to return even if not explicitly
configured. The hold- queue command is not being synchronized to the standby RP.
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) =========
LocalMAC rewrite table
Interface Address Output_Info
-----------------------------------------------------------------------------
...
ATM1/0.1 192.168.1.1 0x1C062340
4BA72000AABA031180C2000700000004
757122D600081008B0560800 <-- incorrect
...
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