I have cacti graph the amount of prefixes announced and withdrawn from a BGP peer on each BGP router.
-----Original Message----- From: ML [mailto:m...@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.
