Question

Consider the following network. IP and Ethernet addresses are marked for all interfaces. Assume a client on host A sends a TCP connection request message to a web server on host B. Show all the headers in the packet on link 1 and on link 2, assuming the addressing indicated on the figure. Include IP source and destination addresses, Ethernet source and destination addressees, and TCP source and destination port numbers. Use port numbers that make sense for the given application. Be sure to organize the headers in the proper layered order and label them. 28.111.41.1 34:7E:09:A0:12:01 128.111.52.112 45:32:C9:BD:F9:03 Link 1 Link 2 28.111.41.23 43:00:08:A6:B1:1:3 28.111.52.1 0A:09:56:44:BE:CD

Answer 1

Solution :

Addresses in header at link 1 TCP header: Source Part: 2000 Destination Part: 80 IP header: Source SP: 128.111.41.23 Destination IP: 128.111.52.112 (MAC) Ethernet header: Source: 43: 00: 08: A6: B1: 13 Destination: 34: 78: 09: A0: 21: 01 Addresses in header at link 2 TCP header: Source Part 2000 Destination Part: 80 IP header: Source IP: 128.111.41.23 Destination IP: 128.111.52.112 Ethernet: Source: 0A: 09: 56: 44: BE: CD Destination: 45: 32: C9: BD: F9: 03

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