From: Scott Morris (smorris@ipexpert.com)
Date: Sat Apr 28 2007 - 13:57:20 ART
The RFC is noticeably unhelpful for this, but the bottom line is that it
depends what you are trying to accomplish!
Remember that the loop-prevention mechanisms of BGP will kill routes that
have the same cluster-id in them. Obviously you can overcome this with the
use of separate cluster-id's on each (current recommended practice).
Ask yourself though what happens when things fail? Obviously with the
failure of an RR will be overcome by having more than one. But what happens
when one link from an RR to one client fails? Will anyone get routes still?
Sure, because you have other route reflectors. So will you gain anything by
having them peer together?
You may end up messing up your path selection process (all things being
equal, paths are chosen based on lowest cluster-id then lowest router-id).
So look at your network plan and routing plan and that will help answer your
question!
There isn't necessarily any right or wrong answer. Just whatever
accomplishes your desires is best! Play around with things though, and see
if there are any noticeable difference in your test lab route choices.
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
IPexpert VP - Curriculum Development
IPexpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sachin
Sent: Saturday, April 28, 2007 11:52 AM
To: Cisco certification
Subject: Route Reflector
Hi All,
If there are multiple RR in an AS, is it mandatory for them to be in full
mesh ? I have checked the RFCs but I haven't got the clarity on this.
Thanks in advance,
- Sachin Shenoy
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