ARP

 

Types of ARP

Here are four types of Address Resolution Protocol, which is given below:

• Proxy ARP
• Gratuitous ARP
• Reverse ARP
• Inverse ARP

Proxy ARP:

In the Proxy ARP method, Layer 3 devices can respond to ARP requests. This ARP type is configured router will respond to the target IP address and maps the router’s MAC address with the target IP address and sender when it is reached to its destination.

Gratuitous ARP:

Gratuitous is another type of ARP request of the host. This type of ARP request helps the network to identify the duplicate IP address. Therefore, when an ARP request is sent by a router or switch to get its IP address, no ARP responses are received so that no other nodes can use the IP address allocated to that switch or router.

Reverse ARP (RARP)

Reverse ARP, also now called RARP, is a type of ARP networking protocol which is used by the client system in a LAN to request its IPv4 address from the ARP router table. The network admin mostly creates a table in the gateway-router, which helps determine the MAC address to that specific IP address.

Inverse ARP (InARP)

Inverse ARP is also called InARP, is a type of ARP used to find the nodes’ IP of addresses from the data link layer addresses. InARP is widely used for ATM networks frame relays where Layer 2 virtual circuit addressing acquired from Layer 2 signaling.