ISIS L1/L2 mystery

From: Hunt Lee (ciscoforme3@yahoo.com.au)
Date: Mon Mar 03 2003 - 10:40:44 GMT-3


Hi guys,

I did a lab scenario on ISIS. I got all the routes correctly on all of my routers.
However, some of my routes have got different L1 / L2 tags than as the model answer.

How do we determine whether a particular ISIS route will be L1 or L2?

- if the ISIS network is within the same ISIS area, then it is L1
- if it is from a different ISIS area, it is L2

So in the topology...

RTC---RTD (top two is in ISIS Area 1)
 |
RTA---RTB (bottom four is in ISIS Area 2)
 | \
RTE RTF

Or does it depends on ISIS Router types / redistribution commands...

Any help / ideas would be greatly appreciated.
 
Regards,
Hunt

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