From: Cox, Bryan (bryan.cox@xxxxxxxxxxxxxx)
Date: Wed Aug 22 2001 - 12:23:45 GMT-3
Yves,
I was working in my lab last night on physical interfaces with the same
IS-IS hub and spoke configuration that you and I exchanged e-mails on last
week. I haven't tried multipoint interfaces yet though.
In any case it appears to me that there is a basic problem. From my reading
it appears that level-1 areas never receive routes from level-2 areas. So
in my configuration with physical interfaces, the level-2 spoke sees the
router from the level-1 spoke, but the level-1 spoke never sees the router
from the level-2 area.
Can you post your configs that you got working with the point-to-multipoint
configuration?
Bryan
-----Original Message-----
From: Yves Fauser [mailto:Yves@Fauser.de]
Sent: Wednesday, August 22, 2001 12:35 AM
To: jonatale@earthlink.net
Cc: hans; ccielab@groupstudy.com
Subject: Re: isis over frame relay
Hi Hans, hi all,
again, for isis on frame :
1. Remember to map clns
2. Isis has two network types, broadcast and point-to-point, these types
must match on both Sides of the link.
3. Isis elects ar DR on a broadcast network, this DR is only used for
controlling purposes, on a broadcast network you need an any-to-any
adjacency. Obviously this doesn't work on FR. So with multipoint or
physical interfaces there can be only one adjacency per level-type
(because one DR is elected for level-2 and one DR is elected for
level-1) between the spokes and the hub.
If you have two spokes, configure one as a level-1 neighbor, and the
other as level-2 neighbor. With tree spokes it can't work.
4. Isis works perfect with point-to-point subinterfaces
Yves
P.S. http://www.groupstudy.com/archives/ccielab/200108/msg00763.html
jonatale@earthlink.net wrote:
> map clns
>
> hans wrote:
>
> > Hi all,
> >
> > Does anyone know how to configure ISIS over frame relay?
> >
> > R2/s0----------s0/R1/s0------------s0.1/R3
> >
> > R1 is the hub, it use int s0 (2 DLCI) to connect with R2 and R3.
> >
> > I have router isis and net xxxxxx configured on all three routers.
> > I also have all the interfaces configured with ip router isis.
> >
> > When I do show clns is-neighbors, I can not find neighbors at all.
> >
> > Need your help on it.
> >
> > Thanks,
> >
> > Hans
> > **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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