Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario descargar pdf (Pagina 124)

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Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8

OL-10394-05 Rev. R0

Removing and replacing the RD configuration under a VRF may also trigger the same type of sync

error behavior, although the command listed as failing line-by-line sync will be different.

Conditions: Removal of a BGP address-family configuration triggers background cleanup

processing that occurs asynchronously after the command is entered by the user. The background

cleanup runs on both the active RP and the standby RP, although the cleanup may happen at different

times on the active and standby. Because such background processing does not usually run in

lockstep on the two RPs, a window exists after entering an address-family deconfiguration command

where the active RP and standby RP are not in the same state. If the user tries to reconfigure the

address-family command before both RPs have completed processing and are again in the same

state, line-by-line sync may fail and cause the standby RP to reload.

Workaround: The line-by-line sync error can be avoided by allowing adequate time for the standby

RP to complete background processing and arrive in an identical state as the active RP. If

configuration commands are applied when both RPs are in a consistent state, the configuration sync

error will not occur and the standby RP will not reload. The background processing normally

happens at 60-second intervals, so waiting 2 minutes between deconfig/reconfig attempts for the

same command should prevent the issue in all cases.

The line-by-line sync error and standby RP reload should not cause any service impact, as only the

standby RP is affected. The active RP remains fully functional and continues traffic forwarding as

usual while the standby RP reloads.

• CSCsk49705

Symptoms: The ip nat inside source static network command does not have the <cr> option.

Conditions: This symptom is observed on a Cisco 7200 router that is loaded with Cisco IOS Release

12.4 or 12.4T.

Workaround: There is no workaround.

• CSCsk94179

Symptom: Connectivity problems are observed for IPv6 client, which obtained IPv6 prefix via

DHCP for Virtual Access interface, due to incorrect static routes in the routing table for the assigned

IPv6 prefix.

Conditions: Occurs with IPv6 prefix delegation via DHCP, when client moves from one interface to

another.

Workaround: None

Further problem description: When IPv6 prefix delegation assigns a prefix for Virtual Access

interface, it creates a static route for the prefix in the routing table. When a client moves to a new

interface, old binding and the old routes are retained, which causes the problem.

• CSCsl00472

Symptoms: A Cisco router unexpectedly reloads with memory corruption after showing multiple

“%SYS-2-INPUT_GETBUF: Bad getbuffer” messages

Conditions: Occurs during normal operation.

Workaround: There is no workaround.

• CSCsl04687

Symptoms: “Total packets L3 Switched” counter does not include multicast packet count.

Conditions: Occurs always. “Total packets L3 Switched”, includes packet switched by FIB, NetFlow

and ACL only.

Workaround: There is no workaround.

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