Re: ospf virtual-links vs GRE

From: James (james@towardex.com)
Date: Wed Oct 06 2004 - 14:29:50 GMT-3


On Wed, Oct 06, 2004 at 06:36:37AM -0700, mani poopal wrote:
> Hi Group,
>
> In the exam if an ospf area is not connected to area 0, you can use virtual link to have the connectivity. It the requirement says not to use virtual link, I know you can achieve the desired result by GRE tunnel. Can any one point me to sampe url for configuration in the cisco website or post a sample config.

Router A:
in tun0
 tun so a.a.a.a
 tun des b.b.b.b
 ip add 10.1.10.1 255.255.255.252
 no shut
!
router osp 100
 net 10.1.10.0 0.0.0.3 ar 0
!

Router B:
in tun0
 tun so b.b.b.b
 tun des a.a.a.a
 ip add 10.1.10.2 255.255.255.252
 no shut
!
router osp 100
 net 10.1.10.0 0.0.0.3 ar 0
!

HTH,
-J

-- 
James Jun                                            TowardEX Technologies, Inc.
Technical Lead                        Network Design, Consulting, IT Outsourcing
james@towardex.com                  Boston-based Colocation & Bandwidth Services
cell: 1(978)-394-2867           web: http://www.towardex.com , noc: www.twdx.net


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