From: Michael (mamiller2@comcast.net)
Date: Mon Apr 03 2006 - 02:24:06 GMT-3
Ok, but doesn't Cisco documentation say differently? I'm really confused
about this for some reason I don't understand yet. I do understand about
TTL = 1. So with any configuration then R1 and R3 will never be neighbors
in OSPF? Only neighbors are spoke(s) & hub then?
The optional OSPF interface settings only allow DR election & timer
settings?
So when would you logically use Cisco default NBMA OSPF interface rather
than P-M?
-----Original Message-----
From: Charlie Atwater [mailto:catwater@AUSSIEMAIL.COM.AU]
Sent: Sunday, April 02, 2006 11:15 PM
To: mamiller2@comcast.net
Cc: ccielab@groupstudy.com
Subject: Re: OSPF - Hub & Spoke - Point-to-Multipoint
Michael I believe this is because R1 and R2 are neighbors as are R2 and R3.
But R1 and R3 are not actually neighbors.
CAT
--- mamiller2@comcast.net wrote:
From: "Michael" <mamiller2@comcast.net>
To: "ccielab" <ccielab@groupstudy.com>
Subject: OSPF - Hub & Spoke - Point-to-Multipoint
Date: Sun, 2 Apr 2006 21:43:09 -0600
Hi All,
I am trying to understand some information about FR Point-to-Multipoint
network interfaces in a Hub and Spoke architecture. I think I just figured
it out but I still would like to hear comments.
R1 (Spoke) <-> R2 (Hub) <-> R3 (Spoke)
All three routers are physically connected to a IOS router and configured
using routed PVC's. Is it because of the routed pvc's that I do not see "IP
OSPF Neighbors" of R3 in R1?
I am using physical (multipoint) interfaces with frame maps.
Is it true that switched pvc's in my IOS router would react differently?
Thanks,
Michael
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