[c-nsp] BGP route flap damping

xdsgrrr extrememasta at gmail.com
Thu Oct 9 04:26:33 EDT 2008


There is no over-generalizations in this dude statments its true only a
little ISP
don't use this

route-views.oregon-ix.net>sh ip bgp fl reg _17992_
BGP table version is 7792882, local router ID is 198.32.162.100
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
              S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          From            Flaps Duration Reuse    Path
*  203.223.128.0/19 134.55.200.1    2     00:21:52          293 7473 24218
17992
*                   216.218.252.164 2     00:21:52          6939 7473 24218
17992

can you explain to me this ? or this is not happen to you right now

I past you several route server info do you need more ?

route-server.ip.tiscali.net>sh ip bgp dampening parameters
 dampening 15 750 2000 60 (DEFAULT)
  Half-life time      : 15 mins       Decay Time       : 2320 secs
  Max suppress penalty: 12000         Max suppress time: 60 mins
  Suppress penalty    :  2000         Reuse penalty    : 750

route-views.oregon-ix.net>sh ip bgp dampening parameters
 dampening 15 750 2000 60 (DEFAULT)
  Half-life time      : 15 mins       Decay Time       : 2320 secs
  Max suppress penalty: 12000         Max suppress time: 60 mins
  Suppress penalty    :  2000         Reuse penalty    : 750

Swisscom-IP>sh ip bgp dampening parameters
 dampening 15 750 2000 60 (route-map ipp-damping 30)
  Half-life time      : 15 mins       Decay Time       : 2320 secs
  Max suppress penalty: 12000         Max suppress time: 60 mins
  Suppress penalty    :  2000         Reuse penalty    : 750

route-server.ip.att.net>
sh ip bgp dampening parameters
 dampening 15 750 2000 60 (DEFAULT)
  Half-life time      : 15 mins       Decay Time       : 2320 secs
  Max suppress penalty: 12000         Max suppress time: 60 mins
  Suppress penalty    :  2000         Reuse penalty    : 750


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