From: Jim Brown (Jim.Brown@xxxxxxxxxxxxx)
Date: Fri Jan 04 2002 - 15:48:02 GMT-3
The only way a default will be injected is if the L2 router has a connection
to another area. This is the only way the ATT bit will be set.
It will not advertise a default if it doesn't know how to get anywhere else
other than its own area.
-----Original Message-----
From: Paul Young [mailto:tsungdapaulyoung@yahoo.com]
Sent: Friday, January 04, 2002 11:38 AM
To: Michael C. Popovich
Cc: ccielab@groupstudy.com
Subject: Re: IS-IS Verification
Hi Group:
Actually I was the original person who brought up
the ISIS/CLNS question a week ago.
However, it seems that even if I enable CLNS routing, default-originate
command within ISIS, and clns router isis, the ATT bit still does not get
set from a L1/L2 router to a connected L1 only router. The IOS code I was
using is 12.1.5(T10), I also tried 12.1.12, but no luck.
So if anyone want to give me a pointer I would really appreciate it, thanks
again.
BTW, the topology setup is over fram relay, but I do
have the frame map clns DLCI# broadcast command in
there.
Regards,
Paul Young.
--- "Michael C. Popovich" <mpopovich@layer3.biz>
wrote:
> I have double checked on Documentation CD regarding
> IS-IS and the need
> for CLNS. Peter is definitely right in the fact that
> CLNS is not
> required to route IP using IS-IS. This question is
> for Peter and anyone
> else with a good understanding of IS-IS.
>
> Reading through the Documentation CD on Integrated
> IS-IS I have a
> question regarding multi-area. The way I read it I
> am assuming that if
> you implement a multi-area IS-IS solution then you
> in fact do need to
> enable CLNS routing. Is this true? The examples
> given in the
> Documentation CD show that a single area IS-IS
> network doesn't need CLNS
> routing but in the multi-area scenario they have
> CLNS routing enabled.
> This isn't specifically addressed but I assume with
> the need for
> different areas using different NET addresses
> requires the CLNS
> protocol.
>
> Please correct me if I have misinterpreted this.
>
> Thanks,
>
> Michael Popovich
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