From: Kevin Baumgartner (kbaumgar@xxxxxxxxx)
Date: Tue Dec 26 2000 - 14:20:13 GMT-3
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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