RE: FRAME RELAY AND IP OSPF NETWORK POINT-TO-MULTIPOINT HELP

From: Walker, Todd (todd.walker@seurat.com)
Date: Thu Dec 12 2002 - 19:37:15 GMT-3


The way I understand it, in p-to-m, OSPF generates /32 for each endpoint. Each spoke will get 2 /32, one for hub and one for other spoke.

-----Original Message-----
From: Jason Wydra [mailto:jasonwydra@yahoo.com]
Sent: Thursday, December 12, 2002 3:07 PM
To: ccielab@groupstudy.com
Subject: FRAME RELAY AND IP OSPF NETWORK POINT-TO-MULTIPOINT HELP

Hello - I'm just trying to clarify something with this command. This is Frame Relay. In a partial mesh between 3 routers. One router is the hub and all routers have the ip ospf point-to-multipoint configured on a sub-interface. The subinterface on each spoke have a map statement assigning the hub ip address to its DLCI. There is no map statement for the ip of the other spoke on either spoke. The hub has map statements for both spokes. How does the spoke know what layer 3 to layer 2 map to use when pinging to the other spoke if there is no manual map configured? Why does this work when network type point-to-multipoint is configured and not when network type broadcast is configured? Does the spoke just send the packet out on the dlci that is mapped to the hub IP and hope the hub has the map?

Thanks,

Jason Wydra

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