On Wed, 3 Oct 2012, Joseph Jackson wrote:
I have cacti graph the amount of prefixes announced and withdrawn from a BGP peer on each BGP router.
+1
Note that not all router OSs support fetching data like that via SNMP.
We use a custom built thing internally that does this two, which we
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/3/2012 10:16 AM, William F. Maton Sotomayor wrote: then tack on an alert threshold for. So if a downstream peer sends us less than that, we get an alert. Handy for those times when they call and ask us what we did to their network. :-)
Prior to that, we had a script which whould login, munge the 'show ip
bgp summary' table output, figure out the deltas and graph or report as needed on a particularly troublesome peer.
-----Original Message----- From: ML [mailto:ml@kenweb.org] Sent: Tuesday, October 02, 2012 11:43 PM To: North American Networking and Offtopic Gripes List Subject: Internet routing table "completeness" monitoring?
Has anyone put in place a method to identify if one their BGP peers
suddenly withdraws X% of their prefixes?
e.g I should expect ~420k prefixes in a "complete"[1] routing table
from a transit peer today. If suddenly I'm only getting 390k prefixes I'd guess a major network was depeered or similiar.
If so how are people doing this? SNMP MIB, screen scrape?
[1] Varying levels of completeless apply.
wfms
So, there is something called the BGP Monitoring Protocol (BMP): http://tools.ietf.org/html/draft-ietf-grow-bmp-06 http://www.nanog.org/meetings/nanog45/abstracts.php?pt=MTM2NiZuYW5vZzQ1&nm=nanog45 Looks like it is supported in JunOS. Has anyone used it? If so, what monitoring software are you using? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQEcBAEBAgAGBQJQbFsYAAoJEBxhAh+LWUKi/WwIAKxVmcCfI6xng0lAL5UxHSGK v+fp5Q1d40hCu1aWWeeV/eYvyOEZSwkY/jSK0EaVrdmv0y4GQttQqSfGk+1RQOK/ jZAD/r0Fd9K9vMLJ5Te+bkjYuOp23G2bDn8QWuls4HBc1nHxkPc6arzUTgTzEFAZ +Ljk3MQSHiZ+nb6fkX+Yb7e3UJZjpkuWaNeqGcKz9FR9PJT5UZI8Yf2iwMHtVl/l R9XfAIG/xDd64oKEDbt8JmtQkqS64ZnCFe+B/yEuTKC6Pl0DUm4orH7322oxjxOW yDloqmhO5pCmVETFHwn0ocTpDKqG2zE4zA4bHL+w+xePSS61DpUf51V3eg8JgZo= =Ofld -----END PGP SIGNATURE-----