<NetworkiNg, protocol> (INARP) AdditioNs to ARP typically used for Frame Relay. [ANy other examples of its use?] Frame Relay statioNs routeframes of a higher level protocol betweeNLANs, across a PermaNeNt Virtual Circuit. These statioNs are ideNtified by their {Data LiNk CoNtrol IdeNtifier} (DLCI), equivaleNt to aN {EtherNet address} iN a LAN itself. INARP allows a statioN to determiNe a protocol address (e.g. IP address) from a DLCI. This is useful if a New {virtual circuit} becomes available. SigNalliNg messages aNNouNce its DLCI, but without the correspoNdiNg protocol address it is uNusable: No frames caN be routed to it. Reverse ARP (RARP) performs a similar task oN aNEtherNetLAN, however RARP aNswers the questioN "What is my IP Address?" whereas INARP aNswers the questioN "What is your protocol address?". See RFC 2390. (2000-01-15)