From: Andrew (arousch@xxxxxxxx)
Date: Tue Dec 26 2000 - 16:17:37 GMT-3
I'd be interested to know of a single network running ISIS and token-ring
(aside from private 'what if' labs.) ;)
At 09:20 AM 12/26/00 -0800, Kevin Baumgartner wrote:
> So I was trying to do isis over tokenring between two routers.
>It was never able to form isis neighbors with the other router. If I
>did "debug isis adj" it showed that the routers was trying to negotiate the
>length (mtu). Started at 4469
>
>20:02:19: ISIS-Adj: Sending L2 LAN IIH on TokenRing1/0, length 4469
>
>and the other router would do the same. But neither router would receive
>any ISIS-Adj.
>
> So I was able to find a isis configuration with Tokenring and the mtu was
>defined to 1500 on the tokenring interfaces. So I put this on both of my
>routers tokenring interfaces and they formed a isis adj and isis neighbors.
>
> So this seems to be a isis with tokenring issue. Might be something to
>watch for. I am still not quite sure why this is required but then again I
>still
>don't understand isis that well.
>
> Kevin
>
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