We would run frame-relay switching to transport the Telematics traffic. IP traffic would originate on ethernet interfaces on the 3640. Ideally, we would like to be able to define a sub-interface for IP traffic on the main frame interface, or else use an additional dlci for IP defined on the main interface along with the switched DLCI's. The Cisco SE on the account has verified that he has configured this setup, with a sub-interface, but has not actually seen it work in production. The customer does not want any uncertainty as to the workability of the config. Can anyone verify that this approach will indeed work in a live environment? Thanks.
Re: Frame-relay switching and frame-relay routing combined
I believe I have found the answer I am looking for. The answer is that I can either switch the dlcis over tunnel interfaces between the 3640 endpoints or run a slight variation on the hybrid back-to-back tech tip config. I'm still not sure about sub-interfaces in the latter case, but that is just an implementation detail. Using private T1's instead of carrier frame makes the latter implementation simple.
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