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Too much WAN traffic

I do not know Cisco but have a basic understanding of networking. We are using several Cisco 1721 routers with frame-relay. Because of a legacy Vax, we are using BGP routing protocol instead of routing tables. Some of these routers seem to be generating too much WAN traffic. How would I check the router to see if local traffic that should remain local is getting out to the WAN? Are there any router settings to make sure local traffic stays local? Thanks!

Reply to
Mark
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I will check first the routing tables to see if any route leaking. You can use netflow in the FE (incoming) or ip accounting packets in the serial interface (outgoing), or both.

Once checked, you could use ACL (Access List) to drop the unwanted traffic.

-as

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Reply to
aservin

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