We've had the line card module in slot 4 fail multiple times over the last few months. By fail, I mean it goes into "other" state and all ports are listed as "errdisable." We've also had the module in slot 5 fail twice with the same symptoms.
We recently had the sup fail along with the line card, so since we had a spare chassis, I swapped that while I was at it in an attempt to eliminate the chassis as a potential culprit.
I've had this issue with both WS-X6148-RJ-21 and WS-X6248A-TEL modules. Cisco has done a site analysis regarding proper grounding etc. and we have since had a contractor perform the grounding per Cisco, so I can't see that as an issue.
Furthermore, we have 9 other chassis throughout our campus with the exact same setup running the same FW/SW revs so I'm not seeing it as a bug as this issue has been isolated to this one location and specific slot(s).
At this point I'm left to think it's something on the physical layer - 25pr telco cables, patch panel - something? Any thoughts would appreciated.
[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...