[nsp] eBGP routes not balancing

Jeff Chan cisco-nsp at jeffchan.com
Mon Nov 17 17:42:16 EST 2003


Hi Charles,
It's not at all silly if I forgot to say that it's outbound
traffic.

Jeff C.
__

On Monday, November 17, 2003, 2:47:55 PM, Charles Gucker wrote:
> Jeff,
>         Silly question, is your issue with your inbound
> connectivity, or your outbound?

> charles

> On Mon, Nov 17, 2003 at 02:09:11PM -0800, Jeff Chan wrote:
>> After enabling "bgp bestpath compare-routerid" and resetting the
>> sessions, most of the traffic went to the peer with the lower
>> numerical address (ID), which again is unbalanced.  So I've
>> disabled compare-routerid and will probably reset all the
>> sessions late at night with "clear ip bgp all" in the hopes
>> that the ages of the routes will then be close enough, since
>> they're all cleared and re-learned at the same time, to
>> result in traffic that is closer to balanced.
>> 
>> Both providers are large, our pipes to them and routing tables
>> learned similar sized, so balanced traffic should be a
>> reasonable goal.  Any other suggestions are welcomed.  Aside
>> from external route servers, how is anyone else dealing with
>> this?  Balancing fully multi-homed traffic must be an issue
>> for lots of folks....    Why can't IOS just do the right thing?
>> :P
>> 
>> Jeff C.
>> -- 
>> Jeff Chan
>> mailto:cisco-nsp at jeffchan.com
>> http://www.supranet.net/
>> 
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-- 
Jeff Chan
mailto:cisco-nsp at jeffchan.com
http://www.supranet.net/



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