[c-nsp] BGP Advertised Prefixes

Ahmed Hilmy hilmy.aa at gmail.com
Tue Apr 9 16:13:07 EDT 2013

Dear Friends,

Recently i have faced a strange issue, BGP session with my UP Links goes
down due this log at UP Link side:

RP/0/RSP0/CPU0:Apr  8 13:10:54.818 : bgp[1044]: %ROUTING-BGP-4-MAXPFXEXCEED
: No. of IPv4 Unicast prefixes received from x.x.x.x: 401 exceed limit 400

RP/0/RSP0/CPU0:Apr  8 13:10:54.818 : bgp[1044]: %ROUTING-BGP-5-ADJCHANGE :
neighbor x.x.x.x Down - Peer exceeding maximum prefix limit (CEASE
notification sent - maximum n           umber of prefixes reached) (VRF:


# sh bgp neighbor x.x.x.x detail | i Prefix advertised

  Prefix advertised 2735, suppressed 0, withdrawn 1855, maximum limit 524288
#sh bgp neighbor  x.x.x.x advertised-routes

i count the number of advertised prefixes are only 215

So what Prefix advertised 2735 does it mean ?
Why i faced this issue with my UP Links , it happened sometime , if i have
configured BGP filter in wrong way so i have to face this
issue continuously.

Any suggest plan to check ?

More information about the cisco-nsp mailing list