Re: [nsp] connected flaps?

From: Richard Irving (rirving@onecall.net)
Date: Fri Aug 14 1998 - 18:16:29 EDT


Bill,

  I forget the earlier interface config... The network in the BGP
table is /24, is the interface /24 , or is it a subset of /24 ?
(ie: /28)

 The static routes should match the prefix length exactly....
And, are you using the static to the interface, in addition to
the null 0 ? And finally, you may want to manually set the
mask on the network entry in BGP.

ie: network 198.32.64.0 mask 255.255.255.0

Also make sure the smallest CIDR matches the actual interface ,
using both: (For example)

network 198.32.64.0 mask 255.255.255.192
network 198.32.64.0 mask 255.255.255.0

Then, clear the dampening....

See if this helps..... This one is fighting you ;)

bmanning@ISI.EDU wrote:
>
> Ah, but I did clear damping about 90 minutes before I "snapped"
> this entry.
>
> >
> > You may need to do a clear ip bgp dampening to clear it now.
> >
> > larry Rosenman
> > bmanning@ISI.EDU wrote:
> > > Er, no it doesn't.
> > >
> > > >sh ip bgp 198.32.64.0
> > > BGP routing table entry for 198.32.64.0/24, version 15027151
> > > Paths: (1 available, no best path, advertised over IBGP, EBGP)
> > > 4555, (suppressed due to dampening)
> > > 198.32.146.11 from 198.32.146.11 (192.0.2.10)
> > > Origin IGP, metric 1, valid, external
> > > Dampinfo: penalty 1286, flapped 56 times in 01:32:47, reuse in 00:11:40
> > >
> > > Sigh.. :(
> > >
> > >
> > > >
> > > > make sure you have an:
> > > >
> > > > ip route 198.32.64.0 255.255.255.0 null0
> > > >
> > > > and it'll work fine.
> > > >
> > > > At 10:44 AM 8/14/98 -0700, you wrote:
> > > > >> That , or nail it up and insert the actual network into your BGP
> > > > >> tables.... Solid as rock then.
> > > > >> > >
> > > > >> > > router bgp 4555
> > > > >> > > no synchronization
> > > > >> > > bgp dampening
> > > > >> > > network 198.32.64.0
> > > > >> > > redistribute connected metric 50 weight 3500
> > > > >> >
> > > > >> > Isn't it better to nail up a static route for that network to null0, and
> > > > >> > redistribute static instead of connected?
> > > > >
> > > > >Er, the actual network is (or should be) inserted into the BGP table.
> > > > >Or at least thats what I thought the:
> > > > >
> > > > > network 198.32.64.0
> > > > >
> > > > >entry did...
> > > > >
> > > > >--
> > > > >--bill
> > > > >
> > > > >
> > > >
> > > > Peter Stemwedel
> > > > Network Engineer
> > > > InterAccess Co. petes@interaccess.com
> > > > 168 N. Clinton (312) 496-4694 Office
> > > > Chicago, IL 60661 (312) 496-4499 FAX
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > --bill
> > >
> >
> >
> > --
> > Larry Rosenman http://www.lerctr.org/~ler
> > Phone: +1 972-414-9812 (voice) Internet: ler@lerctr.org
> > US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
> >
>
> --
> --bill



This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:13:13 EDT