From: Hunt Lee (huntl@webcentral.com.au)
Date: Sun Feb 09 2003 - 08:10:23 GMT-3
Hi cebuano,
I think the command is only useful if your router is a L1/L2 (that is, it
doesn't have that is-type command configured).
And there will be times where from the L1/L2 router, that you are connecting
to say, a L1 router. In that case, you can use "isis circuit-type level-1"
so only Level 1 adjacency will be form.
And the same logic is true for L2 routers by "isis circuity-type level-2"
command.
Please correct me if I'm wrong ;)
Hunt
-----Original Message-----
From: cebuano [mailto:cebu2ccie@cox.net]
Sent: Sunday, 9 February 2003 3:40 PM
To: ccielab@groupstudy.com
Subject: ISIS Circuit Type
Hi Group.
The documentation on the command "isis circuit-type" says.
To configure the type of adjacency, use the isis circuit-type command in
interface configuration mode.
[snip]
Level 2 adjacencies are established if the other routers are Level 2 or
Level 1-2 routers and their interfaces are configured for Level 1-2 or
Level 2. Level 1 adjacencies will never be established over this
interface.
I thought that if the router process and interface are left at the
default settings, then you will have TWO adjacencies: Level 1 and Level
2.
Is there something I'm not reading correctly in the documentation's last
sentence?
Doyle p.605 says."Neighboring L1/L2 routers form BOTH an L1 adjacency
and an L2 adjacency.
TIA,
Elmer
.
.
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