Re: OSPF GRE Tunnel

From: Joseph Rinehart (jjrinehart@hotmail.com)
Date: Fri Dec 30 2005 - 17:36:15 GMT-3


I didnt think you could do a virtual-link on area 0...I have used GRE for
lab scenarios like theis before. The only thing you have to watch for are
MTU issues....
----- Original Message -----
From: "Dennis Worth" <Dennis.Worth@oomc.com>
To: "tj.mitchell" <tj.mitchell@verizon.net>; "Chris"
<chris_atkins@Blueyonder.co.uk>; <ccielab@groupstudy.com>
Sent: Friday, December 30, 2005 10:50 AM
Subject: RE: OSPF GRE Tunnel

> If a split area 0 is the problem. Can a virtual-link be used or do you
> have to use a GRE?
>
> Dennis Worth
> Network Engineer
> Option One Mortgage
> phone. 949-790-3687
> dennis.worth@oomc.com
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> tj.mitchell
> Sent: December 30, 2005 9:03 AM
> To: 'Chris'; ccielab@groupstudy.com
> Subject: RE: OSPF GRE Tunnel
>
> Chris --
> Pretty much a virtual-link is a tunnel through the area. What exactly
> are
> you thinking and are having the issue with?
>
> If it's a split area 0
>
> R1 --> Serial 0 area 0 connected to R2 Serial 0
> R1 --> Serial 1 area 1 connected to R3 Serial 1
>
> R2 --> Serial 0 area 0 connected to R1 serial 0
>
> R3 --> Serial 1 area 1 connected to R1
> R3 --> FE 0 area 0 connected to R4
>
> R4 --> FE 0 area 0 connected to R3
>
> Create a tunnel on R3 to R1 through area 1 then put the tunnel into area
> 0.
> This will essentially give you a virtual link through area 1, only using
> tunnels.
>
> Thanks
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Chris
> Sent: Friday, December 30, 2005 11:53 AM
> To: ccielab@groupstudy.com
> Subject: OSPF GRE Tunnel
>
> Hi all
> I am having great difficulty finding a good example of using a GRE
> tunnel
> instead of a virtual link, also is there any issues in doing so ? Any
> help
> would be greatly apppreciated.
>
> Cheers
>
> Chris
>
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