In the network shown below, nodes A through G are hosts, node H is an Ethernet h

Question

In the network shown below, nodes A through G are hosts, node H is an Ethernet hub. node S is an Ethernet switch. Host G acts as an IP-level router (i.e. a gateway) between the two subnets. Subnet 1 is allocated IP block 197.15.35.0/24. and Subnet! is allocated IP block 200.40.1 S. 192/26. All of the network interfaces in Subnet 1 were manufactured by Intel. All of the network interfaces in Subnet2 were manufactured by Apple. (c) Suppose a DXS resolver is running on Host D. and Host A wishes to make a DXS query. Host A must therefore send a UDP packet to Host D. Depending on the ARP and forwarding tables in the network, sending this DXS query can also require some additional packets (ARP queries. ARP replies, etc.) to be sent. Assume all ARP tables on all hosts are initially empty, and all forwarding tables on switches are also initially empty. Show, in some detail, all of the packets that are involved in getting A's DXS query to reach D. You should include all related ARP queries and replies. Describe what is contained in each packet (e.g. UDP source and dest ports. IP source and dest addresses. Ethernet MAC source and dest addresses. ARP information), which host sends each packet, and which hosts receive each packet. Say what each recipient does with each packet it receives.

Explanation / Answer

203.15.2.0.266.266.232   host address [1 to 30]

203.15.2.32.266.266.232   host address [33 to 62]

203.15.2.64.266.266.232   host address [65 to 94]

203.15.2.96.266.266.232   host address [97 to 126]

203.15.2.128.266.266.232   host address [129 to 158]

203.15.2.160.266.266.232   host address [161 to 190]

203.15.2.192.266.266.232   host address [193 to 222]

203.15.2.224.266.266.232    host address [225 to 254]

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