Mapping between point-to-point frame relay interfaces

[minagnasery]

Hi, I'm Mina Nasry

I was configuring a topology on a lab enviroment, that was conscisted from 4 cisco 2691 routers, and a frame-relay switch ( A 2691 as a frame-relay switch ) [i.e. 5 2691 Routers ]

I was configuring them as a Hub-and-Spoke [Star] topology ; as for all Routers  [Hubs & Spokes] are configured as point to point interfaces for frame-relay encapsulation ; so baisicly each of the spokes is being connected with the hub using a sub-interface
 

I used OSPF as a routing protocol after ; and for obvious reasons, i can't map any IP address with any DLCI in any of the mentioned routers. As for point-to-point maping configuration , you will only be allowed to configure DLCIs by mapping  them [ONLY ONCE] with a specific sub-interface and not mapping it with a specific IP address

Hence, there's a problem
Every spoke is able to reach to the hub, but none of the spokes are able to reach to any other spoke

Can any one provides me a solution ?

Thanks

[Julio Carvajal]

Hello,

So you are using the point-to-point sub-interfaces everywhere.

I do not see where the issue lies as basically all you need to do from a L2 perspective is build the PVC.

Afterwards you can work on the OSPF Deployment.

So first question would be:

Are you able to ping from the hub to each of the spokes?

From there we can work on the OSPF setup,

Also if possible share the configuration you have so far (Interfaces, OSPF)

Regards,