One of our cisco 6509 core switches semi-died last night. It has 2 interface cards and a Management module. Slot 2 is fiber interface, slot 5 is management, slot 7 is ethernet interface. Both of the interface (fiber and ethernet ) were dead as a door-nail. no pwer, no lights. I powered off-on the switch but hte cards still seemed dead. I removed the fiber card and put it in another 6509 and it worked. The failed 6509 came back to life so I moved the fiber card back to the original location and powered off-on the 6509 again and all worked ok. Switch booted and all was good.
Were are a newspaper and this happened at go-to-press time so Icould not take time to do a good job of trouble isolation. The logs did not show anything. It is as if the interface cards / back-plane lost power.
Question: has anyone seen something like this before?