From: Peter van Oene (pvo@usermail.com)
Date: Sat Feb 08 2003 - 20:52:02 GMT-3
At 08:47 PM 2/8/2003 +0100, Wojciech.Gebka@ssk.com.pl wrote:
>If you have a Type 1 only ISIS area the default route outside is trough
>Type 1/2 router. But because ISIS is a clns routing protocol to advertise
>this defalult route you must turn on a clns routing in area. The " clns
>routing" is turned automaticaly when you get the interface into isis
>process.
I'm pretty sure this isn't the case. Level One only routers look for the
ATT bit set in L1 LSPs and set their own default toward the closest of 1-N
routers which may have this bit set. This has nothing to do with
CLNS. CLNS routing is not required for ISIS to function, nor does it need
to be automatically turned on. I believe a number of IOS builds do in fact
add this command to the config, but I expect the newer ones do not. I
don't have a clear idea of which trains/revs do which however.
Pete
>Hi
>
>Wojtek
>
>
>
>
> Hunt
> Lee
> <huntl@webcentr To:
> "'ccielab@groupstudy.com'"
> al.com.au> <ccielab@groupstudy.com>
>
> Sent
> by: cc:
> nobody@groupstu Subject: ISIS
> help!!!
> dy.com
>
>
>
>
>
> 03-02-08
> 12:28
> Please
> respond
> to Hunt
> Lee
>
>
>
>
>
>
>
>
>Hi group,
>
>Can someone please tell me what is the purpose for "clns routing" global
>configuration command for ISIS?
>
>I setup 5 routers in my home lab using ISIS, and I get IP connectivity
>throughout
>the entire network without using this command...
>
>According to TCP/IP Vol 1 (Solie), it says this command should be
>automatically
>entered by IOS when ISIS is enabled, yet it is not in my router's configs
>anywhere...
>
>N.B:- I'm using IOS 12.2(12a)
>
>Cheers,
>Lee
>.
>.
.
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:17 GMT-3