[c-nsp] Identifying BGP route flapping

[Frank Bulk]

We're not that desperate to monitor BGP flaps to install a router, and even,
that's not a counter, is it?

 

Sounds like there's no nice option to measure instability.

 

Frank

 

 

From: Mike Johnson [mailto:harbor235 at gmail.com] 
Sent: Wednesday, April 09, 2008 10:54 AM
To: Adam Armstrong
Cc: frnkblk at iname.com; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Identifying BGP route flapping

 

That will work for local BGP flaps, but if you are trying to monitor BGP
flaps on the net this will not work.
You could setup a router that has BGP dampening enabled, this will give you
a look into flaps
on the net.

harbor235 ;}

On Wed, Apr 9, 2008 at 11:48 AM, Adam Armstrong <lists at memetic.org> wrote:

Frank Bulk wrote:
> We had an incident a little over a week ago where our upstream provider
> (which managers our edge routers) told us that the BGP routes were
flapping
> between our two edge routers.
>
> Is there a MIB that we can poll to monitor the number of changes in
routing
> tables, or BGP flaps?
>
You can find out when the session last changed, how many messages have
been sent across the session and how many updates have been sent across
the session.

Sadly i don't think there's a flap counter you can poll.

adam.
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