Re: Unnumbered and Virtual Links

You cant run a virtual link with IP Unnumbered or at least I am unaware of how you would do that. A virtual link is based off the 32 bit OSPF router ID address, not IP address but sometimes the router ID is taken from an IP address. If you need to get back to area 0 and would like to use ip unnumbered than just build a tunnel.

You can do a show ip ospf virtual-links and it will tell you the router ID...

On Jul 15, 2010, at 9:43 AM, Yaseen Mirza wrote:

> Hi
>
> I have been trying to run a virtual-link whilst having an unnumbered serial
> link in the transit area for the VL.
> Having read about this in more detail I have found that this is not actually
> possible.
> Can somebody please confirm this? Is there any way round this?
>
> Also I am in some doubt about standard virtual links. When I create a
> virtual-link, it is created on the router-id.
> How do we find out where the VL neighbor actually exists. e.g.
>
> area 1 virtual-link 1.1.1.1
>
> If I look in the ospf database it shows me that 1.1.1.1 is known by
> advertising router 1.1.1.1
> So how do I find out where 1.1.1.1 is from the ospf database?
>
> Thanks
>
>
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Received on Thu Jul 15 2010 - 10:16:34 ART