Cisco OL-4015-08 Manual de usuario Pagina 567

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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(30)S3
Workaround: There is no workaround.
CSCef25686
Symptoms: A number of PVCs may become locked in an inactive state, and the following type of
error message may appear in the log:
%ATM-3-FAILREMOVEVC: ATM failed to remove VC(VCD=X, VPI=X, VCI=X) on Interface ATM
X/X/X,
(Cause of the failure: PVC removal during recreation failed)
Conditions: This symptom is observed when you change the parameters of a VC class while the PVC
is active and while you view the PVC status in the output of the show atm vc interface
interface-number command.
The symptom occurs when you change the PVC speed in a VC class via one Telnet (or console)
session and you enter the show atm vc interface interface-number command via another Telnet (or
console) session.
Workaround: To remotely resolve the symptoms, remotely initiate an HA failover or remotely reload
the affected router.
CSCef41934
Symptoms: A router processes incoming LSP ping packets as unlabeled IP packets on a VRF
interface or a non-MPLS interface.
Conditions: This symptom is observed on a Cisco router that has the MPLS LSP Ping feature
enabled.
Workaround: Use an ACL to block port 3503 that is used for LSP ping packets. However, note that
this may prevent some MPLS LSP Ping applications from functioning properly, as noted below:
LSP ping packets that enter on a VRF interface are dropped because the router uses the global
routing table in its attempt to reply to MPLS echo requests, which could cause the reply to be
forwarded to the wrong destination.
LSP ping packets that enter on an interface that is not configured for MPLS are processed, but
depending on the type of MPLS echo packet, the following occurs:
MPLS echo request packets are dropped.
MPLS echo reply packets are not dropped. (It possible for an MPLS echo reply packets to be
received on a non-MPLS interface because the reply path is asymmetric with the forward LSP.)
CSCef50208
Symptoms: The number of transmitted broadcast packets is not shown in the show interface
command on Ethernet interfaces. The customer needs to see this counter in the show interface
command, just like the number of received broadcasts.
Conditions: The feature is implemented only for Ethernet interfaces on GSR platforms.
Workaround: There is no workaround.
CSCef59507
Symptoms: A failed LDP session may still show up in the output of the show mpls ldp neighbors
command as well as the new working session after the neighborship is re-established. The display
of two sessions, one not working and one working to the same neighbor, may mislead the MPLS
network operator.
Conditions: This symptom may occur after an LDP session has gone down and then re-established.
Workaround: There is no workaround.
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