From: Mike Haddad (mike.haddad@hotmail.com)
Date: Tue Apr 01 2008 - 23:58:01 ART
All you can do is ping tests. When you run BGP with the BB routers try to ping
the first address in each address space that your learn via BGP.
> From: joe@affirmedsystems.com> To: huan.pham@valuenet.com.au;
ccielab@groupstudy.com> Subject: RE: How to verify connectivity to Backbone
routers> Date: Tue, 1 Apr 2008 22:06:19 -0400> > If you even try to access the
backbone router's you will be charged under> the Computer Fraud and Abuse act
of 1986. You agree to this by showing up in> the lab.> > The proctor's are
authorized to detain you until govt. officials arrive at> the lab, at which
time you will be arrested. > > Bottom line;> > DON'T TRY IT> > -----Original
Message-----> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of Huan> Pham> Sent: Tuesday, April 01, 2008 9:37 PM> To: 'Cisco
certification'> Subject: How to verify connectivity to Backbone routers> > 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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