Re: Internetwork Expert Volume 2 Lab 7 Task 4.7

Vincent,

I had the same problem. When the virtual link came up, R1 leaks the
loopbacks of R4 and R5 back to R3 that was previously summarized. Hence
virtual link is not a good solution.

Virtual link is considered part of Area 0 and hence R1 would receive both
loopbacks without summarization. Next, R1 sends it to R3 breaking the
summarization done earlier.

HTH

On Mon, Apr 6, 2009 at 12:40 AM, Vincent Tay <vtay.75_at_gmail.com> wrote:

> Hi all,
>
> I need some enlightenment. For Internetwork Expert Volume 2 Lab 7 Task 4.7,
> i have configured virtual link (Area1) between router R1 and R5. R5 was
> summarise some of the Area0 routes. When the virtual link is up, the routes
> was not summarise. Anyone know why and how it happen and how virtual link
> work in deep technical? GRE tunnel solve the issue.
>
> Area0 Area1 Area1 Area2
>
> R4---------------------->R5---------------->R3-------------->R1----------------->R2
>
> Regards
> Vincent Tay
>
>
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Received on Mon Apr 06 2009 - 00:59:29 ART