North American Network Operators Group
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Re: Dampening on Juniper routers

  • From: john heasley
  • Date: Sat Dec 09 20:37:45 2000 
On Sat, Dec 09, 2000 at 06:32:32PM -0500, John Fraizer darkened my spool with the following:
> 
> 
> Can anyone relate any information with regards to how Juniper routers
> differ from Cisco in respect to BGP dampening?
> 
> We are seeing issues with one of our peers who is using an M20.  If the
> BGP session is cycled, that peer is damping our routes for aprox 1hr.  We
> don't have this problem with any other peers, all of whom are using Cisco
> products.

there once was a bug where junos penalized flaps twice, once at withdraw
time and once at re-advertize time.  you can compensate by doubling
your/the default params.


> There has to be some huge difference in the way that the Juniper is
> calculating the penalty and decay.
> 
> Any help is greatly appreciated.
> 
> ---
> John Fraizer
> EnterZone, Inc
> 
>