We would want to prefer the route from the router with the T1 connection over the 64k connection. Obviously this is not what we would want. Since our cost to the Ethernet segment advertised by these two routers will be calculated based on the cost of the Ethernet segment plus the cost of our incoming interface, both routes appear to be equal cost. One of the remote routers has a T1 Frame Relay connection and the other has a 64k Frame Relay connection. Our router is connected to these two routers via Frame Relay. Remember that the cost is based on your "incoming" interface's bandwidth and not the bandwidth of the neighbor's interface that connects to you.Īs an example say we have two remote routers over Frame Relay and the remote routers are both connected to and advertising the same Ethernet segment. ![]() ![]() This is useful on a multipoint Frame Relay interface where there are two neighbors advertising the same route but the CIRs for the DLCIs to reach each neighbor is different or these two neighbors that are advertising the same route have different port speeds to the Frame Relay network. ![]() OSPF point-to-multipoint non-broadcast was designed to allow for the assignment of the cost on a per neighbor basis as opposed to using the interface's cost.
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