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192.168.20.0/24 AS2 192.168.10.0/24 17.0.0.0/8 16000/ 18.0.0.0/ L30.0/24 R1 15.00.0/ AS1 130.10.0.0/16 10.0.0.0/a 130.20.0.0/26 R4 R3 AS4 11.000/ 10.30.0.0/16 AS3 Figure 1: Network topology for question 2(a). a) Formulate and write down the reachability table for the above topology in the Figure 1. Is it possible to decrease the size of the table with the help of aggregation? If possible, show the final table as well. And also explain the importance of different path attributes in finding the best path using BGP protocol for the above topology. b) Communication involving mobile IP can be inefficient. The inefficiency can be severe or moderate. With the help of diagrams, explain those inefficiencies and also write down the solution to those inefficiencies. c) Each router inside an AS has its intra-domain routing table (RIP, OSPF, etc.) for forwarding packets inside its own AS. Why does the speaker router not share this routing information with neighbor ASs? How does the I-BGP help in this regard?

192.168.20.0/24 AS2 192.168.10.0/24 17.0.0.0/8 16000/ 18.0.0.0/ L30.0/24 R1 15.00.0/ AS1 130.10.0.0/16 10.0.0.0/a 130.20.0.0/26 R4 R3 AS4 11.000/ 10.30.0.0/16 AS3 Figure 1: Network topology for question 2(a). a) Formulate and write down the reachability table for the above topology in the Figure 1. Is it possible to decrease the size of the table with the help of aggregation? If possible, show the final table as well. And also explain the importance of different path attributes in finding the best path using BGP protocol for the above topology. b) Communication involving mobile IP can be inefficient. The inefficiency can be severe or moderate. With the help of diagrams, explain those inefficiencies and also write down the solution to those inefficiencies. c) Each router inside an AS has its intra-domain routing table (RIP, OSPF, etc.) for forwarding packets inside its own AS. Why does the speaker router not share this routing information with neighbor ASs? How does the I-BGP help in this regard?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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192.168.20.0/24 AS2 192.168.10.0/24 17.00.0/ 16.00.0/8 18.0.0.0/8 192.168.30.0/24 R2 R1 15.0.0.0/8 AS1 130.10.00/16 10.0.0.0/8 130.20.0.0/16 R4 R3 AS4 11.00.0/ 110.30.0.0/16 AS3 Figure 1: Network topology for question 2(a). a) Formulate and write down the reachability table for the above topology in the Figure 1. Is it possible to decrease the size of the table with the help of aggregation? If possible, show the final table as well. And also explain the importance of different path attributes in finding the best path using BGP protocol for the above topology. b) Communication involving mobile IP can be inefficient. The inefficiency can be severe or moderate. With the help of diagrams, explain those inefficiencies and also write down the solution to those inefficiencies. c) Each router inside an AS has its intra-domain routing table (RIP, OSPF, etc.) for forwarding packets inside its own AS. Why does the speaker router not share this routing information with neighbor ASs? How does the I-BGP help in this regard? 2.
Transcribed Image Text:192.168.20.0/24 AS2 192.168.10.0/24 17.00.0/ 16.00.0/8 18.0.0.0/8 192.168.30.0/24 R2 R1 15.0.0.0/8 AS1 130.10.00/16 10.0.0.0/8 130.20.0.0/16 R4 R3 AS4 11.00.0/ 110.30.0.0/16 AS3 Figure 1: Network topology for question 2(a). a) Formulate and write down the reachability table for the above topology in the Figure 1. Is it possible to decrease the size of the table with the help of aggregation? If possible, show the final table as well. And also explain the importance of different path attributes in finding the best path using BGP protocol for the above topology. b) Communication involving mobile IP can be inefficient. The inefficiency can be severe or moderate. With the help of diagrams, explain those inefficiencies and also write down the solution to those inefficiencies. c) Each router inside an AS has its intra-domain routing table (RIP, OSPF, etc.) for forwarding packets inside its own AS. Why does the speaker router not share this routing information with neighbor ASs? How does the I-BGP help in this regard? 2.
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