04-25-2008 11:58 AM - edited 03-05-2019 10:37 PM
Hi
i have BGP down also Log shows
Apr 25 16:29:49 WST: clock change removed for int ATM2/0
Apr 25 16:29:50 WST: clock change done for int ATM2/0
Apr 25 16:29:53 WST: clock change removed for int ATM2/0
Any idea what this log mean
04-25-2008 12:36 PM
mahesh
Those log message would seem to indicate that there was a problem with interface ATM2/0. The clock change removed and clock change done would seem to indicate a signaling problem - which is probably a provider error.
If interface ATM2/0 is how you access your BGP peer the problem on the interface probably explains why BGP is down.
I would suggest that you check with your provider for the state of your connection on ATM2/0.
HTH
Rick
04-25-2008 12:41 PM
thanks for Reply,
whnei do sh BGP nei summ it show state as
active.so it is problem with BGP nei router
in clocking?
04-26-2008 06:31 AM
Hi,
it was problem with telco at central office.
dirty connectors.
it is fixed now
04-26-2008 01:04 PM
mahesh
Thank you for posting back to the forum and indicating that the problem was resolved. As I suggested to you, the problem was with the provider and not with the neighbor router.
HTH
Rick
04-27-2008 12:05 PM
Hi Rick
problem was with dirty pair of telco device at central office.
just one question though how you can find
that problem is not with BGP nei router?
thanks
04-27-2008 12:47 PM
HI Mahesh, [Pls Rate if HELPS]
The many cases by which the BGP Neighbor Fails,
A route-flap occurs when a BGP network prefix is withdrawn and reannonced; specifically, this happens when a BGP Speaker hears a WITHDRAWN followed by an UPDATE for a prefix. Whenever a network goes down, the rest of the Internet is told about it. Hence, BGP propages this state change throughtout the Internet of course.
If the State Change is caused by Faulty Circuits (frequently going up and down) or from misconfigured routing (redistributing the IGP into th EGP), the internet would experience several hundered BGP State cahnges a second. For every state change, BGP will allocate a time to process the work and pass on the changes to all other BGP neighors.
Hope I am Informative.
Pls RATE if HELPS
Best Regards,
Guru Prasad R
04-27-2008 05:13 PM
mahesh
Your original post included these error messages:
Apr 25 16:29:49 WST: clock change removed for int ATM2/0
Apr 25 16:29:50 WST: clock change done for int ATM2/0
Apr 25 16:29:53 WST: clock change removed for int ATM2/0
I interpret these to be more likely a problem with the carrier than with the neighbor router. (the neighbor router is usually not involved with the clocking of the circuit on your router)
HTH
Rick
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