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Re: Non-ISP companies multi-homing?
From: Gordon Mercer <gmercer () dn net>
Date: Fri, 25 Jul 97 09:01:13 -0400

You wrote:
On Thu, Jul 24, 1997 at 04:49:29PM -0700, J.D. Falk

But, seperate real ASN or seperate community, you'll
still want to filter incoming announcements from the
customer -- just as they'd probably want to filter
announcements from you.

I think you mean confederation, JD.



Don't think he did, Alec. Using communities would make it  
much easier to filter the routes to the customer than  
using confederation. I don't think there's any need to  
implement confedrations here. Sounds like headaches I  
don't need. Communities would allow you to filter very  
specifically only routes coming from the router.

The real problem here is that the ISP with the EBGP  
session still depends on the ISP with the IBGP session to  
do things correctly, unless customer routes are filtered  
at a network level -- Something I've never liked doing,  
but always felt was necessary.

How can I have a setup that is flexible enough to satisfy  
my customer (and my workload) but safe for me? I've had  
customers running OSPF with one of my routers that was  
redistributing OSPF into BGP, and it was probably one of  
the stupidest mistakes I've ever made.  Screwed me when  
some dumbass decided he could use whatever networks he  
wanted on the Sun they were running gated on.

|Alec Peterson - ahp () hilander com | Erols Internet
Services, INC. | |Network Engineer | Springfield, VA. |


Gordon Mercer  -=<Dedicated>=-  
703 642 2800    -=<Servers>=-   gmercer () dn net

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