Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Bedienungsanleitung Seite 62

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508
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
CSCtc17311
Symptoms: TCAM device has corrupted data for valid entries seen in an X40G line card.
Conditions: The symptom occurs during a background TCAM consistency checker.
Workaround: There is no workaround.
Further Problem Description: Ignore these messages as the entries are already corrected.
CSCtc17429
Symptoms: Multicast packets for some IP multicast groups get duplicated.
Conditions: The symptom is observed on a Cisco 7600 series router that is running Cisco IOS
Release 12.2(33)SRD2a and having an SRP ring as the OIF interface for IP multicast. The duplicate
packets for those groups can be seen using the command show ip mroute count on the other nodes
in the SRP ring.
Workaround: There is no workaround.
CSCtc22745
Symptoms: Without PMTU configured and the interface MTU is 1500 on the L2TPv3 uplinks,
packets are not fragmented.
Conditions: Occurs with packets that require fragmentation between the L2TPv3 endpoints.
Workaround: There is no workaround.
CSCtc24864
Symptoms: CDP is disabled and its neighbors are not seen on a CDP-enabled QnQ port after a
shut/no shut operation.
Conditions: The symptom is observed on an L2 QnQ tunnel port. By default, on L2 QnQ tunnel port
CDP is disabled. CDP can, however, be enabled on a QnQ port through the command cdp enable.
After enabling the CDP on a QnQ port, a subsequent link down and link up (shut and no shut) of this
QnQ port results in disabling the CDP which is the default behavior.
Workaround: Configure CDP (using the cdp enable command) again after link up.
CSCtc24959
Symptoms: Occasionally you may experience a multicast traffic loss in dual path line cards.
Conditions: The symptom is observed in dual path line cards. Occasionally, met2 programming will
go out of sync between two data paths.
Workaround: Any change that triggers reprogramming that entry will help. Changing replication
mode to ingress is a workaround.
CSCtc32238
Symptoms: mVPN traffic is not getting forwarded after SUP failover.
Conditions: The symptom is observed under the following conditions:
The multicast traffic is flowing from ingress PE towards egress PE.
Used redundancy force-switchover or primary SUP OIR for the SUP failover on ingress PE.
Some of the mVPN traffic flows stopped forwarding the traffic.
Workaround: There is no workaround.
CSCtc33158
Symptoms: A router may experience packet drops for the following packet byte size ranges, only
when L2TPv3 cookies are enabled:
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