It could indicate some STP issues or bad line card/sup. Try to see if you see anything out of the ordinary in module 3 like broadcast traffic/port errors.
If you do not, the best step in troubleshooting is to move the line card to another slot.If the error messages follow the line card, the problem is a line card failure.Otherwise, the problem is most likely a failure on the Supervisor. . I suggest that you open up a TAC case and provide the output of
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...