RE: asymmetric routing?

From: Mohammed Al-zubi (mohammed@sulafsolutions.com)
Date: Sat Feb 08 2003 - 04:33:21 GMT-3


David,
Actually Asymmetric routing is seen sometimes in big ISP networks, we used
it to manage routing migrations. BGP has lots of options that can help you
with that. With Dynamic protocols like EIGRP and OSPF , if you play with
interface metrics/costs, but these parameters are shared with routers
receiving your updates, so it doesn't help. One easy solution is not
running dynamic protocols between A and B, and create static routes to
destinations behind them, this way you can control what interface on what
router is used for traffic, so you can say network x behind router b is
reached via ISDN, and network y behind a is reached via FR for example. if
these routes are part of a much larger networks, then you redistribute these
static back into the IGPs being used.

I hope that answers your question

Mohammed

<><><><><><><><><><><><><><><><><><><><>
Mohammed Al-Zubi
VP Professional Services
24 Werner Ave. #21
Daly City, CA 94014
Tel: (650) 438-6384
Fax: (720) 293-4897
Email: mohammed@sulafsolutions.com
Web: www.sulafsolutions.com

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
David Heaton
Sent: Friday, February 07, 2003 3:05 AM
To: ccielab@groupstudy.com
Subject: asymmetric routing?

this is a client thinking of things for you to waste your time on !

2 sites, 2 WAN connections between them
one ISDN, the other frame relay, both 128Kbps

client wants to transmit traffic on the ISDN, and
receive traffic on FR:

A - - -ISDN - -> B
A <- - - FR - - - B

I haven't done this before, and don't know if it can be

Currently there is EIGRP at both ends, but that can be
changed easily

Any suggestions appreciated

David
.
.



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