what is inverse arp
Inverse ARP. Then, you have inverse ARP (called InARP). Now, Happy Router member tuongdq posted some great information on how inverse ARP is used with Frame-Relay. This information is âspot onâ. He is correct that inverse ARP can be used with frame relay. Inverse ARP can also be used with ATM. InARP is used to find the Layer 3 address from a Layer 2 address (the DLCI in frame relay). With frame, when using. inverse ARP, you know the DLCI of the remote router but you donât know its IP address. Inverse ARP sends a request to obtain that IP address and map it to the Layer 2 frame-relay DLCI. However, it is always recommended to disable & not use inverse ARP because your frame end points could get different IPâs if the network were to be âbouncedâ.