Question:
II am pretty
new to BGP and I Cisco 3560V2 just recently turned on logging for neighbor changes to
troubleshoot problems. I just noticed
this today:
*Apr 12
12:41:31.514 CDT: %BGP-3-NOTIFICATION: received from neighbor x.x.x.x 6/6
(cease) 0 bytes
*Apr 12
12:41:31.514 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down BGP protocol
initialization
*Apr 12
12:41:41.744 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.xUp
*Apr 12
12:43:36.294 CDT: %BGP-3-NOTIFICATION: received from neighbor x.x.x.x 6/6
(cease) 0 bytes
*Apr 12
12:43:36.294 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down BGP protocol
initialization
*Apr 12
12:43:47.679 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Up
*Apr 12
12:46:34.697 CDT: %BGP-3-NOTIFICATION: received from neighbor x.x.x.x 6/6
(cease) 0 bytes
*Apr 12
12:46:34.697 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down BGP protocol
initialization
*Apr 12
12:46:41.847 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Up
*Apr 12
13:05:40.623 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x7 Down Peer closed the
session
*Apr 12
13:05:48.027 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Up
*Apr 12
13:06:35.655 CDT: %BGP-3-NOTIFICATION: received from neighbor x.x.x.x 6/6
(cease) 0 bytes
*Apr 12
13:06:35.655 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down BGP protocol
initialization
*Apr 12
13:06:43.379 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Up
*Apr 12
13:07:18.836 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Down Peer closed the
session
*Apr 12
13:07:30.463 CDT: %BGP-5-ADJCHANGE: neighbor x.x.x.x Up
I looked up the
6/6 (cease) and I noticed that it is because of "configuration
changes." Would this be a config
change at the next hop? Thanks for any
help!
Answer:
The router on
the other side is sending this cease notification. This specific subcode is
hard to interpret but is normally a sign that there is some kind of instability
taking place on the peer router. If the router on the other side is yours, look
at the log on that router to see what is going on. If it belongs to your SP,
you need to contact them Cisco 3560X Price to find out what is going on.
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