From: Michael Snyder (msnyder@revolutioncomputer.com)
Date: Thu Feb 12 2004 - 12:55:15 GMT-3
One is a global command and one is a interface command.
You could have a level 1-2 router with an interface that was only level
2
Or you could have a level 2 router with no level one interfaces.
BTW, I always level 2 routers "is-type level-2-only" If I don't need a
level one default route or a level 1 route-leak. It's like using ospf
only with a backbone area. Much cleaner in the routing table.
-----Original Message-----
From: wwwjjang@chol.com [mailto:wwwjjang@chol.com]
Sent: Thursday, February 12, 2004 9:13 AM
To: ccielab@groupstudy.com
Subject: IS-IS Question !!
Hi Everyone..
I'm studying a IS-IS now..
I want to know the differences between the commands
"isis circuit-type level-2" & "is-type level-2-only" ??
Who knows the right answer ??
----------
Diagram
----------
R1-(s0 1.1.1.1)------(s0 1.1.1.2)-R2
-----------
Question
-----------
-I want to configure IS-IS Level-2 Neighboring
between R1's0 & R2's S0..
----------
Config 1>
----------
R1>
---- router isis net 50.0001.1111.1111.1111.00 log-adjacency-changes ! interface Serial0 ip address 1.1.1.1 255.255.255.0 ip router isis** isis circuit-type level-2 ** --- R2> ---- router isis net 50.0001.2222.2222.2222.00 log-adjacency-changes ! interface Serial0 ip address 1.1.1.2 255.255.255.0 ip router isis** isis circuit-type level-2 **---------- Config 2> ---------- R1> ---- router isis net 50.0001.1111.1111.1111.00 log-adjacency-changes is-type level-2-only ** ! interface Serial0 ip address 1.1.1.1 255.255.255.0 ip router isis** --- R2> ---- router isis net 50.0001.2222.2222.2222.00 log-adjacency-changes is-type level-2-only ** ! interface Serial0 ip address 1.1.1.2 255.255.255.0 ip router isis**
=> What's the Correct answer between "Config 1" & "Config2" ???
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