On Mon, 10 Feb 2003, Andy Dills wrote:
On Fri, 7 Feb 2003, Andy Dills wrote:
On Fri, 7 Feb 2003, Drew Weaver wrote:
Howdy, Im having a little difficulty with a 7507, when I do sh run it just returns a newline and doesn't show me any the running-configuration. My privelege level is 15, and this worked yesterday. I also did wr term, same thing.. New line.. Nothing.. My start-config hasn't been modified, and show start works great. Everything is working Ok in the router, however I am concerned for obvious reasons. ;-)
Reload it, and when it asks if you want to save the changed config, say no (unless you're a masochist.)
Ironically, this happened to a buddy of mine this weekend, and he was in a situation where he couldn't reload for several hours and really needed to change the running config...so, I did a couple of searches to see if I could figure anything out for him, and I came across a post by Jared Mauch on the cisco list (this question would have been better asked there in the first place) that suggested doing a "clear ip route *". Sure enough, that cleared up the memory logjam and access to the running-config was restored.
I've seen this too and it is caused by not having enough free memory to produce the running config. Clearing routes usually works as it frees up a lot of memory. In my experience the only time this occurred in production was because of a memory leak in the IOS, check your sh proc mem,m find the issue and consider if it is a bug and a change of ios req'd Steve