Inverse Address Resolution Protocol
<networking, protocol> (InARP) Additions to ARP
typically used for Frame Relay
[Any other examples of its use?]
frames of a higher level protocol between LANs, across a Permanent Virtual Circuit
. These stations are identified by their Data Link Control Identifier (DLCI), equivalent to an Ethernet address
in a LAN
InARP allows a station to determine a protocol address (e.g. IP address
) from a DLCI. This is useful if a new virtual circuit
Signalling messages announce its DLCI, but without the corresponding protocol address it is unusable: no frames can be routed
(RARP) performs a similar task on an Ethernet LAN
, however RARP answers the question "What is my IP Address?" whereas InARP answers the question "What is your protocol address?".
See RFC 2390.