The network’s logical topology is shown in Figure 1. RIP (Routing Information Protocol) is running on all the routers in this company. DV (Distance Vector) algorithm is the routing algorithm for RIP. Assume the cost of the link between Router 1 and Router 2 is 5; the cost of the link between Router 1 and Router 3 is 18; the cost of the link between Router 2 and Router 4 is 6; the cost of the link between Router 3 and Router 4 is 4. Denote DRouterA as the distance vector for Router A, and denote dRouterA(RouterB) as the cost of the least-cost path from Router A to Router B. In the beginning, the routing table on all the routers is empty. (ignore the link between Router 2 and the external Internet)

 

1. Give the initialized DRouter1 and DRouter4.

 

2. After each router distributes its initialized distance-vector, what is the updated DRouter1? You need to give details of how the updated DRouter1 is obtained.

 

3. When the DV (Distance Vector) algorithm converges, what is the routing table for Router 1? You need to give details of how the DV algorithm converges.

 

4. Describe the factors that contribute to the end-to-end delay between a host in the admin and management department and the Email server.

 

Transcribed Image Text:

Accounting Server Engineering Server Email and Web Server Research and Development Router 1 Router 3 Accounting Router 2 Router 4 Engineering Internet Connection Admin and Management Figure 1: logical topology of an engineering company Accounting Server Engineering Server Email and Web Server Research and Development Router 1 Router 3 Accounting Router 2 Router 4 Engineering Internet Connection Admin and Management Figure 1: logical topology of an engineering company

Answer rating: 100% (QA)

Solution Given the Network topology 1 Initialized DRouter1 and DRouter4 Step1 Initialized all the routing tables of given Routers DRouter1 Destination Distance Next Hop R1 0 R1 R2 5 R2 R3 18 R3 R4 DRo... View the full answer