From: Andy (and123and@googlemail.com)
Date: Tue Mar 18 2008 - 05:20:45 ART
Hi Ahsan
You are right in saying that one area has to have a touchdown in area 0, in
this lab if you read ahead to Task 4.6 it asks you to put lo0 in area 0 on
R1. This would have allowed you to config virtual links, the "brains" also
suggest that this is one reason to read the entire lab before starting.
hth
-A
On 18/03/2008, Ahsan Mohiuddin <ahsan.mohiuddin@yahoo.com> wrote:
>
> Hello Group,
>
> in subject task, we have three ospf areas 17, 135, 34, with ABRs sitting
> between (17, 135) and (135,34).
>
> The task states: "Without regard to network redundancy, use the minimal
> number of virtual links needed to support this OSPF domain." If I am not
> mistaken, its asking me to attain reachability across the entire ospf
> domain.
>
> The solution guide shows a virtual link between the aforementioned ABRs.
> However, when I LABed it, the virtual link never comes up. I remember
> reading somewhere that at least 1 ABR has to be in Area 0, but in this case
> there IS no area 0.
>
> My Solution? Multipoint GRE tunnel between the ABRs (actually the ABRs sit
> on a common NBMA net with a third ospf router.. all three of them in area
> 135, hence the multipoint tunnel) Apparently, it works.
>
> I still don't know whether virtual-links could have been used instead, and
> perhaps in a more clean way. Any ideas?
>
> Regards,
> Ahsan
>
>
>
> ---------------------------------
> Looking for last minute shopping deals? Find them fast with Yahoo!
> Search.
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Tue Apr 01 2008 - 07:53:53 ART