From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Thu Dec 29 2005 - 12:15:20 GMT-3
It doesn't matter if the route was eBGP learned from R1. A router by
default does not pass on an iBGP update on to a third router. This is
the main purpose of the route reflector.
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: Schulz, Dave [mailto:DSchulz@dpsciences.com]
Sent: Thursday, December 29, 2005 6:26 AM
To: Brian Dennis; CCIEin2006; Cisco certification
Subject: RE: Route Reflector Question
Brian - Can we take this one further step.....What if an advertisement
was learned from R1? Since it is eBGP, I would assume that this will be
propagated through to R5? I'm setting up something similar in the lab
where there would be another exit point to a different AS extending out
R5 and this route does not appear to propagate to the next AS.
Thoughts?
Dave Schulz,
Email: dschulz@dpsciences.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Brian Dennis
Sent: Wednesday, December 28, 2005 6:33 PM
To: CCIEin2006; Cisco certification
Subject: RE: Route Reflector Question
To answer your own question, think about how BGP works:
If you are a router in AS200 and you receive an iBGP update, would you
forward that update onto another router in AS200 if you aren't
configured as a RR?
So now that we know R4 will not forward the iBGP update on we can solve
this by configuring R4 as a RR or have R3 peer with R5 directly.
HTH,
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
CCIEin2006
Sent: Wednesday, December 28, 2005 3:07 PM
To: Cisco certification
Subject: Route Reflector Question
Hello All,
Could someone tell me how many times a route will be propagated in the
following example:
R1(AS100)--->R2(AS200)---->R3(AS200 RR)---->R4(AS200)---->R5(AS200)
R1 is in AS100, all others are in AS200.
R3 is configured as route reflector with R4 as the route reflector
client.
Basically I'm wondering if R4 will propagate the routes learned from R3
to
R5?
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