Difference between ARP and RARP
Prerequisite – ARP, Reverse ARP(RARP), Inverse ARP(InARP), Proxy ARP and Gratuitous ARP
In Address Resolution Protocol (ARP), Receiver’s MAC address is fetched. Through ARP, (32-bit) IP address mapped into (48-bit) MAC address.
Whereas, In Reverse Address Resolution Protocol (RARP), IP address is fetched through server. Through RARP, (48-bit) MAC address of 48 bits mapped into (32-bit) IP address.
Let’s see that the difference between ARP and RARP:
| S.NO | ARP | RARP |
|---|---|---|
| 1. | ARP stands for Address Resolution Protocol. | Whereas RARP stands for Reverse Address Resolution Protocol. |
| 2. | Through ARP, (32-bit) IP address mapped into (48-bit) MAC address. | Whereas through RARP, (48-bit) MAC address of 48 bits mapped into (32-bit) IP address. |
| 3. | In ARP, broadcast MAC address is used. | While in RARP, broadcast IP address is used. |
| 4. | In ARP, ARP table is managed or maintained by local host. | While in RARP, RARP table is managed or maintained by RARP server. |
| 5. | In Address Resolution Protocol, Receiver’s MAC address is fetched. | While in RARP, IP address is fetched. s |
| 6. | In ARP, ARP table uses ARP reply for its updation. | While in RARP, RARP table uses RARP reply for configuration of IP addresses . |
| 7. | Hosts and routers uses ARP for knowing the MAC address of other hosts and routers in the networks. | While RARP is used by small users having less facilities. |
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