Subject: isis route prefernece

From: "aridaman kaushik" <[email-masked]>
Date: 4 Dec 2001 06:21:41 -0000

hi all,
     I hope, anyone would clarify my doubt regarding ipv6 route prefernece in isis.
in draft draft-isis-ipv6-02.txt, route preference is given like this(from best to worst).

1. level1  up
2. level2  up
3. level2  down
4. level1   down

What is meaning of up/down here.
we can assume that level2 down means l2 to l1 leaked route. but what is the meaning of l1 down
thanks in advance
ari

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