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Re: withdrawal propagation (was E.E. Times?)

  • From: Hank Nussbacher
  • Date: Wed Jan 15 01:36:12 1997

On Tue, 14 Jan 1997, John W. Stewart III wrote:

> 
> excessive rates of bona fide routing updates *can* be a
> problem.  it's called route flap.  and we've got route
> flap dampening to reduce the scope of such events
> 
> what we've been talking about very recently on this list
> is the high rate of withdrawls that have been seen.
> specifically, e.g., withdrawls from RouterA to RouterB
> for networks that RouterA never announced to RouterB.
> this is not a route flap .. it is just a superfluous
> withdrawl and causes no operational problems.  however,
> some folks were tracking the number of withdrawls and
> didn't like the large number, so the vendor was informed
> and the code was changed.  it's a good and appropriate
> thing that the behavior was changed, but that doesn't
> mean that it was a bug and doesn't mean that it was
> causing any problems

Can you specify the bug/fix number for Cisco so we all can check to see
that we have it installed?

-Hank


> 
> /jws
> 
> > 
> > > 0) Is this a bug, does it cause any problem whatsoever?
> > 
> > If I'm not mistaken, lots of routers have had performance problems 
> > caused by excessive rates of routing updates.  
> > 
> > Or didI misread various previous messages to this list?
> > 
> > > > I've looked at the Cisco page, and a search on "BGP, withdrawals" does
> > > > not find any mention of the bug fix release.  So, I have some pointed
> > 
> 


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