From: Chuck Church (cchurch@optonline.net)
Date: Mon Nov 18 2002 - 13:14:37 GMT-3
Allen,
OSPF hellos have a TTL of 1. R1 has to 'route' it, since there's no PVC
between the two spokes. So it times out due to expired TTL.
Chuck Church
CCIE #8776, MCNE, MCSE
----- Original Message -----
From: "McClure, Allen" <Allen.McClure@Tricon-Yum.Com>
To: <ccielab@groupstudy.com>
Sent: Monday, November 18, 2002 10:25 AM
Subject: OSPF Neighbors on NBMA
> Probably a silly question, but I've gotten a little rusty since I took a
> study break.
>
> I'm trying to understand exactly why two NBMA spokes can't become
> neighbors.
>
> R1 (dlci 105) --------- (dlci 501) R5
> --------- (dlci 401) R4
>
> R1 would be a point-to-multipoint interface. I understand that making
> R1 the DR makes everything work and that adjacencies aren't formed or
> necessary from R5 to R4, but I can't remember why they CAN'T be formed
> when they can ping each other, etc..
>
>
> Allen McClure
>
>
>
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