The sender A (IP address: 141.23.56.21, Physical address: A46EF45983AB) is a host and wants to send a packet to another host B (IP address: 114.5.7.89, Physical address: 457342ACAE32) on another network.

The next-hop (router) for this destination in the sender's routing table is Router R1 (IP address: 141.23.56.24, Physical address: A46EF45983DE).

Give me the ARP request packet format filled with all necessary fields from sender A.

Consider the Ethernet as hardware type & IPv4 as protocol type 

 

sender A (IP address: 141.23.56.21, Physical address: A46EF45983AB)

host B (IP address: 114.5.7.89, Physical address: 457342ACAE32

Hardware Type - 0x0001 ( 1 for ethernet )

Protocol type - 0x0800 ( 0x0800 for IP (0000.1000.0000.0000))

Hardware length - 0x06 (6 bytes for ethernet)

Protocol length - 0x04 ( 4 bytes for IP )

ARP operation - 0x0001 (1 = request, 2= reply, 3/4 = RARP req/reply)

Sender MAC address - A4:6E:F4:59:83:AB

Sender IP address - 141.23.56.21

Destination MAC address - 00:00:00:00:00:00

Destination IP address - 114.5.7.89

Find the attachment for ARP Format

Note:- According to RFC 5227: The 'target hardware address' field is ignored and SHOULD be set to all zeroes'

Please see the attached file for the complete solution