An alternative method for connecting host C in Exercise 41 is to use proxy ARP and routing: B agrees to route traffic to and from C and also answers ARP queries for C received over the Ethernet. (a) Give all packets sent, with physical addresses, as A uses ARP to locate and then send one packet to C.
(b) Give B's routing table. What peculiarity must it contain?
Exercise 41
Suppose hosts A and B are on an Ethernet LAN with class C IP network address 200.0.0. It is desired to attach a host C to the network via a direct connection to B (see Figure 4.58). Explain how to do this with subnets; give sample subnet assignments.
Assume that an additional network address is not available. What does this do to the size of the Ethernet LAN?
Figure 4.58
