-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 12.12.2011 09:27, Mark Tinka wrote: > On Monday, December 12, 2011 03:38:56 PM Garry wrote: > >> Dec 11 22:59:31: %LDP-5-NBRCHG: LDP Neighbor [BB1]:0 is DOWN >> (Received error notification from peer: Holddown time expired) >> Dec 11 22:59:52: %LDP-5-NBRCHG: LDP Neighbor [BB3]:0 is DOWN >> (Discovery Hello Hold Timer expired) Dec 11 23:00:00: >> %LDP-5-NBRCHG: LDP Neighbor [BB3] is UP Dec 11 23:00:27: >> %LDP-5-NBRCHG: LDP Neighbor [BB1]:0 is UP > > Are you seeing high CPU utilization on the affected routers, even > if transient?
I've seen high CPU before, but never in time to discern whether the CPU was cause or effect ... just this afternoon I was able to catch one of the outages in time to cross-check multiple places, mainly the logs and cpu history, which clearly showed that the egg was there before the hen - or rather, 100% cpu for ~2min followed by the LDP (and other) outages ... problem is, I can't yet pin-point the cause of the CPU load - guess I will have to set up a cron job to pull "show proc cpu sort 5min" outputs every couple minutes and check which process is the cause for the cpu load ... hopefully ... (even as I prepare to drop the 7200's from the essential places, I even see 10% cpu at the same time on the ASR routers, which is pretty high compared to the ~1% they usually have ... so I want to solve the problem cause, not the effect ...) Tnx, garry -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJO61Y4AAoJEMke62kOY/2CshYIAIXZoPZrlWZ54s/j7nzzqATW hYStVQViiLuvIE27ue4Nk5LNGpJj8oBLH9h37NydwetGd2/z9xTZUl+YLbEZ+9MB Ds+yxA20GCV41KoaQ9emafhsruv0j8MgatgaZ1F4WG0oZFFsifRSJcLAmePSHieN 86qkVAIbP0TC57lpeTzUyz50lX3JlvNRiuOKZsmfnQeyLFPwz0N2KKHAVlYPW8kr bBsfs/uSJqEEEJJKCt9Hn79OVVa3L+wySgiqSwa/fwZUr8e8Gl6srF3LC/DtvkML K/Qokn4vMUMJvvW7AQONDh6TMbo7vYPlWXeQQ975N2JVE/Mow/OH3E5CG8djGlI= =BUp+ -----END PGP SIGNATURE----- _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/