Re: OSPF / frame-relay question...

[info]

I think your project would benefit greatly from Chapter 4 of Caslow's book
Cisco Certification . Paraphrased point of *possible* interest for
you:  avoid mismatched OSPF hello parameters by setting
up each interface as point to multipoint, ie, ip ospf network
point-to-multipoint.

The rest is quite an enjoyable read. Cory, if you don't already have
this book, I recommend getting itit will help on the CCNP tests
for sureCaslow is THE MAN.

-Brennan


"Stull, Cory" <[EMAIL PROTECTED]> wrote in message
0D7A05A19CE4D211BD050008C7330FE7147F40@CCUPDC">news:0D7A05A19CE4D211BD050008C7330FE7147F40@CCUPDC...
> If I have a partially meshed frame-relay network running OSPF...   Lets
say
> 7 sites total.  2 of the main sites have PVCs to every remote site... but
> none of the remote sites have PVCs between each other.   So how can I set
> this up so that each remote site can communicate to each remote site and
if
> one of the central sites goes down it can still use the other central site
> for connectivity???
>
> I thought that I had to use frame-relay map ip statements to get the
remote
> sites to be able to communicate through a central site but if that site
goes
> down and theres another one there that can be used how does it know to
> communicate through the other site?
>
> Can I use multiple frame-relay map ip statements using different
PVCs/DLCIs
> to the remote subnet?
>
>
>
> Thanks for the help...
>
>
>
>
> Cory R. Stull
> MCSE, Bay Router Specialist, CCNA,CCDA
> Communications Concepts Unlimited
> 262-814-7214
>
>
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> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
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Re: OSPF / frame-relay question...

[Sue]

Assign a higher administrative weight to a backup static route for each
static route on the remote routers.

 ip route198.162.50.0 255.255.255.0198.162.10.0
 ip route198.162.50.0 255.255.255.0198.162.20.0180

198.162.10.0 is the primary route using the 1st central router
198.162.20.0 is the backup route using the 2nd central router
The administrative weight of 180 would keep traffic off the backup route
until the primary route was down.



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OSPF / frame-relay question...

[Stull, Cory]

If I have a partially meshed frame-relay network running OSPF...   Lets say
7 sites total.  2 of the main sites have PVCs to every remote site... but
none of the remote sites have PVCs between each other.   So how can I set
this up so that each remote site can communicate to each remote site and if
one of the central sites goes down it can still use the other central site
for connectivity???
 
I thought that I had to use frame-relay map ip statements to get the remote
sites to be able to communicate through a central site but if that site goes
down and theres another one there that can be used how does it know to
communicate through the other site?   
 
Can I use multiple frame-relay map ip statements using different PVCs/DLCIs
to the remote subnet?
 
 
 
Thanks for the help...
 
 
 
 
Cory R. Stull 
MCSE, Bay Router Specialist, CCNA,CCDA 
Communications Concepts Unlimited 
262-814-7214 
 

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