1. Shut down the switch and re-insert all modules (unplug/plug), power up the switch. If it still doesn't work, go to step 2
2. Shut down the switch again, unplug all modules except sup engine, power up the switch. Take note that if you have redundant sup engine, you have to perform this for each sup engine. If it still doesn't work (both sup engine or one of the sup engine), go to step 3.
3. Log a case with Cisco TAC. However, if it works, shutdown the switch
Invest in UPS if DC have only one PDU or DC power is not reliable (i.e. leak, crazy people sharing with your power source :))or STS if DC have more than one PDU.
All of the bad magic number errors I have seen in the past have required that the flash be reformatted and the IOS copied back to the flash, this is a filesystem problem and the only way out I have found to fix it is a reformat, why broke dunno.
I would recommend that you get an external flash card, put it in the good supervisor blade, format it, copy the IOS to it, move the flash card to the non working Sup blade and boot from it. Now that you are booted, format the "sup-bootflash" and copy the IOS from the flash card to the "sup-bootflash". You are now good to go. If you want to check the boot environment from rommon use the "set" command.
[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...