Consider the topology shown in Figure 1, where the three subnets with hosts are denoted as Networks A, B, and C, and the subnets without hosts as Networks D, E, and F.
1 Assign network addresses to each of these six subnets, with the following constraints:
All addresses must be allocated from 214.97.254/23;
Subnet A should have enough addresses to support 250 interfaces;
Subnet B should have enough addresses to support 120 interfaces;
Subnet C should have enough addresses to support 120 interfaces; and
Subnets D, E and F should each be able to support two interfaces.
For each subnet, the assignment should take the form a.b.c.d/x or a.b.c.d/x – e.f.g.h/y.
2 Using your answers to part 1.1, provide the forwarding tables (using longest prefix matching) for each of the three routers.
Suppose there are three routers between a source host and a destination host. Ignoring fragmentation, an IP datagram sent from the source host to the destination host will travel over how many interfaces? How many forwarding tables will be indexed to move the datagram from the source to the destination?
Compare Link state and Distance vector routing protocols at the network layer. Discuss the advantages and disadvantages of the protocols. Your answer must also list examples of Link state and Distance vector routing protocols.