From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Wed Apr 02 2008 - 00:01:00 ART
ping 255.255.255.255 on the router adjacent to BB's. If allowed, you'll know
the IP of the directly connected interface of the BB.
On Wed, Apr 2, 2008 at 5:36 AM, Huan Pham <huan.pham@valuenet.com.au> wrote:
> Hi GS
>
> For internal reachability, it's can be done via ping test or automated
> TCL/Macro scripts.
>
> My question is how we verify connectivity to the backbone.
>
> 1 - Can we log on to the backbone and collect IP addresses?
> If we can, then the same ping test approach can apply here.
>
> 2 - If we can not log on to BB routers, how we can collect backbone IP
> address, and verify connectivity?
>
> My approach is
>
> 2.1. On the routers closest to backbone, show routes advertised from
> backbone. Here we can be quite confident that we have collected all the
> routes BB advertise (if we have correct configuration on these router).
>
> 2.2. Best guess is to take the first available IP from each subnet, and do
> ping test from the routers closest to backbone first.
>
> 2.3. If we get ping responses, then these are in fact valid IP addresses.
> We
> then can roll out the ping tests to all routers in the lab.
>
> 2.4. If we do not get ping response, then the actual IP may be different.
> There's no way to get valid IP addresses in use. We will then have to
> check
> that backbone routes are received on each internal routers by show ip
> routes, and we are advertising internal subnets to BB using (only need to
> check on the routers peering with BB):
>
> show ip bgp nei advertised,
> show ip ospf database,
> show ip eigrp topo
> show ip rip database
>
>
> Please let me know your thought.
>
>
>
> Cheers,
>
> Huan Pham
> Network Engineer
> p: +61 2 9722 3428
> f: +61 2 9722 3410
> e: huan.pham@valuenet.com.au
> w: www.valuenet.com.au
>
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