Here is another little-known technique for listen-only interfaces:

router rip

network x.y.z.k passive <--- Hidden command, whoa!

Hope this helps, please rate post if it does!

Tinu

If I am understanding your post correctly, while the discussion of various ways to do passive interface are instructive, I believe that they do not address the original question which is: "advertising only ethernet0 using rip". Passive interface will not send updates on the passive interface but it WILL advertise the subnet of the interface on active interfaces. So passive interface does not meet the original criteria. The way that I would go is to implement a distribute list on the outbound interfaces which denies the subnets of the other 2 interfaces and permits everything else.

I believe that the original post also leaves an aspect as ambiguous: do you want all the interfaces to be active but only advertise the one subnet, or do you want just the one interface to be active? Perhaps you can clarify your question a bit.

HTH

Rick