Re: ISIS over frame-relay troubles..... posted 01/13/2001
If using a multipoint FR interface IS-IS will not work. Create a tunnel
between the two routers. Works for me!
----- Original Message -----
From: Nigel Taylor <nigel_taylor@xxxxxxxxxxx>
To: Cisco Group Study <cisco@xxxxxxxxxxxxxx>; CCIE_Lab Group Study
Sent: Friday, January 12, 2001 3:11 AM
Subject: ISIS over frame-relay troubles.....
> Hi All,
> I'm just trying to get a handle on ISIS over frame relay. It =
> would seem that because there's no comparable command to the "ip ospf =
> network" under ISIS that this limits the configuration options over =
> frame-relay. It's noted that cisco serial interface with frame-relay =
> encapsulation defaults to a multi-point interface. For some reason I =
> can't get ISIS neighbor adjacencies being formed using a full mesh =
> frame-relay cloud.=20
> I'm using the configuration example in Doyle's Routing TCP/IP, pg. 652. =
> I replaced the ethernet segment between the L2 devices(London, Rome, and =
> Brussels) with frame-relay. In my frame-relay configurations I'm able =
> to ping all points of the cloud but I'm unable to get adjacencies to =
> form. All routers are configured with physical interface(multi-point, =
> being the default) but I still get encapsulation failure when observing =
> the "debug isis adj-packets". Now I've got this to work when the =
> devices are configured using point-to-point sub-interfaces in a partial =
> mesh(hub and spoke topology) and the hub configured for individual =
> p-t-p's for each pvc.
> I am however trying to simulate the ethernet segment I'm replacing.. I'm =
> I thinking way "out the box" here or is this possible"
> For reference there's a basic example on pg. 678 of Doyle's book that =
> covers the frame-relay issue I'm trying to resolve...
> Thanks All,
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