pfs>bgp neighbor max-prefix makes this a lot easier to do now. As soon
pfs>as you go over 75% of the threshold set, the router sends messages
pfs>to syslog. And it will optionally tear the peering down once you
pfs>hit the threshold you set. I know a lot of folks monitor syslog for
pfs>strange events, so adding a monitor for the BGP threshold would be
pfs>easy enough to do. Better than cron logging into the router every
pfs>5/15/60 minutes...
OK... This suggestion solves the upper-bound issue... What about when your
provider accidentally "inverts" an ACL and starts sending you 1 route
instead of blocking a default. Basically, I just want to be notified if my
BGP sessions drop below 100,000 prefixes. Does IOS currently have this
type of functionality? If not, I might run a perl or shell script.
Either way, it is cron based.
Best!
Alan
-- Alan Halachmi Wide Area Network Specialist Ingram Entertainment Network Services mailto:alan@halachmi.net http://www.ingramentertainment.com
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