From: Daniel Sheedy (dansheedy@gmx.net)
Date: Sun Jul 25 2004 - 14:14:14 GMT-3
Hi Alsontra,
I was actually doing an IE lab with some ISIS in it when i read your email,
so, being the curious little fella that I was, I added another router and
made a second isis process on one of the existing routers, that already had
a level 1 connection.
I found that it automagically brought the routes in from the second isis
process into Level2 as well. When I went to a router 1 hop further away, it
saw it as a L2 route, coming from the router that had the two level 1
connections.
So it looks like the config manual is right!
Dan Sheedz
----- Original Message -----
From: <alsontra@hotmail.com>
To: "Bob Sinclair" <bsin@cox.net>
Cc: <ccielab@groupstudy.com>
Sent: Sunday, July 25, 2004 8:40 PM
Subject: Redistributing all Level 1 IP routes into the Level 2 process - by
default
> Hi Bob,
>
> Will a router with two separate ISIS processes automatically redistribute
L1
> routes?
>
> I have always used the multiple net statements to support separate ISIS
> areas, so I'm unclear about this point. The document you posted seems to
> suggest that L1 routers on a single router belonging to two separate ISIS
> process will automatically redistribute. Is this correct?
>
> Quote -
>
> "Redistribution- IP routes learned via Level 1 routing are advertised by
> default into Level 2. Even when multiple Level 1 processes are configured
on
> the same unit, this fact is still true. No additional configuration is
> required to redistribute all Level 1 IP routes into the Level 2 process. "
>
>
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t5/ismarea.htm
>
> Thanks,
> Alsontra
>
>
>
>
> Dehong,
> If you are required to have differet interfaces on the same router in
> different ISIS areas, then I would suggest two different ISIS processes.
> This is the approach suggested by Cisco in the link below. When you
> configure multiple NETs under one process, your database will show a
single,
> merged area.
>
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t5/ismarea.htm
> Bob Sinclair
> CCIE #10427, CISSP, MCSE
> www.netmasterclass.net
> ----- Original Message -----
> From: "Wang Dehong-DWANG1" <Dehong.Wang@motorola.com>
> To: <ccielab@groupstudy.com>
> Sent: Friday, July 23, 2004 4:37 PM
> Subject: ISIS mutiple area question..
>
> > I have another question for the group. If you are asked to configure
> multiple areas, say 2, under one router, should you configure two net
> statements under one router isis or two seperate net statements under
> different router isis? or it doesn't matter? My thought is two router isis
> statements, but I did see case 1 as well, so I would like to clarify it
with
> the group..
> >
> > Case 1:
> >
> > router isis
> > net 49.area-A.xxxx.xxxx.xxxx.00
> > net 49.area-B.xxxx.xxxx.xxxx.00
> >
> > Case 2:
> > router isis
> > net 49.area-A.xxxx.xxxx.xxxx.00
> >
> > router isis area-b
> > net 49.area-B.xxxx.xxxx.xxxx.00
> >
> > thanks in advance..
> >
> > - Dehong
> >
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