From: marc van hoof (mvh@marcvanhoof.com)
Date: Fri Aug 20 2004 - 10:39:01 GMT-3
Yes, because R5 is an ABR for area 0, 45, 345
It's basically so that if R5 loses it's connection to the FR cloud, we'd
need to prevent area 345 from being a standalone area...
So the frame relay cloud between R3,R4,R5 is area 345, and the isdn between
R4,R5 is area 45. area 0 is R5 and SW2.
If R5 lost it's connection to area 345, then it would be area 0 SW2, R5 -
area 45 R5, R4 - area 345 R4, R3.
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> gladston@br.ibm.com
> Sent: Friday, 20 August 2004 11:05 PM
> To: ccielab@groupstudy.com
> Subject: Re: dialer watch-list - please help !!
>
> After drawing your net, one question:
>
> R4 is connecte to R5 through serial 0 and through BRI0/0;
> Serial 0 is on Area 345;
> BRI 0/0 is on Area 45;
> There is a virtual link over ISDN but there is no virtual link over serial
> 0.
>
> If the network is correct, is there any reason to have a virtual link over
> the ISDN and not having also through Serial?
>
> =========================
> quoted:
>
> router ospf 1
>
> router-id 150.2.4.4
>
> max-metric router-lsa on-startup 600
>
> log-adjacency-changes
>
> area 45 virtual-link 150.2.5.5 authentication message-digest
>
> area 45 virtual-link 150.2.5.5 message-digest-key 1 md5 CISCO
>
> area 45 virtual-link 150.1.5.5
>
> network 142.2.0.4 0.0.0.0 area 345
>
> network 142.2.45.4 0.0.0.0 area 45
>
> network 150.2.4.4 0.0.0.0 area 45
> ===========================
>
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