From: Ashok Verma \(ashoverm\) (ashoverm@cisco.com)
Date: Mon Mar 29 2004 - 01:37:06 GMT-3
HI Brian,
I understand the solution very well .....that whenever we need to make
the tunnel and need to use ip unnumbered , we need to put the network of
Unnumberd interface in area 0.
If you look at my scenario here ,
>
> R1--------R2-----R3
>
> Between R2 and R3 ospf area 0 is running, and between R1 and R2 area
3.
On R1 I have a loopback address ( 1.1.1.1) and my requirement is to
> put it in area 1. And I should not be using the virtual link. I should
> have 1.1.1.1 in R3's routing table.Is any way to do it .
>
We need to make a tunnel between the R2 and R1. On R2 the requirement of
putting tunnel Unnumberd interface in area 0 is not a problem since R2
has a interface( Connected to R3) already in area 0.
But on R1 there is only one interface which is connected R2 using area
3, So I don't have any interface to put in area 0 .what should I do in
this case ....
Thanks and Regards,
Ashok
>
>
>
> "Ashok Verma (ashoverm)" <ashoverm@cisco.com> wrote:
> Hi all
>
> For all OSPF gurus.....here is a very good query....
>
> R1--------R2-----R3
>
> Between R2 and R3 ospf area 0 is running, and between R1 and R2 area
> 3,
>
> On R1 I have a loopback address ( 1.1.1.1) and my requirement is to
> put it in area 1. And I should not be using the virtual link. I should
> have 1.1.1.1 in R3's routing table.Is any way to do it .
>
> As per my views, there are two ways .....
>
> Solution 1: Use Tunnel between R2 and R1 and then assign the tunnel IP
> in ospf area 0 ...........But the question is In real lab we are not
> allowed to use any extra ip....so can we still use this solution using
> the IP unnumberd.( in that case what ip we should be putting in area 0
> ??)
>
> Solution 2: Use multiple process on R1 and then redistribute them .But
> again question is are we allowed to use multiple process ids in ospf.
>
> Which solution look better from the real lab point of view.
>
>
> Regards.
>
> Ashok Kumar Verma
> CCIP,CCDP,CCNP
> Network Consulting Engineer
> Customer Advocacy Advanced Service Dep.
> Service Provider AS Div.2
> Cisco Systems, K.K.Japan.
>
> Tel: +81-3-5324-4583
> e-mail: ashoverm@cisco.com
>
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