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1. An ISP has an internal network with the topology shown in the figure with the following address space: 170.88.130.0/23. This space is divided as follows: the network IDs for N1, N4 and N5 are 170.88.130.0/25, 170.88.131.0/24 and 170.88.130.128/26, respectively. The required minimum subnetwork capacities for N2 and N3 are the following: N2 25 hosts and N3 as many as possible. Assume the network interface name in regular hosts (A-E) is eth0. The router interface names are shown in blue in the figure. (a) Assign and clearly indicate in your answer a network ID for the remaining subnetworks and host addresses for D, R1 and R2 (do not assign any address to eth0 in R1). (b) Write the routing table for R2 and D (include default entry) using the following format: Network ID Interface Gateway or Link ??.??.??.??/?? eth? N2 eth2 D C eth0 R2 eth1 Internet eth1 eth0 A N3 R1 FU E eth1 eth0 R3 N1 eth2 B N4 N5

1. An ISP has an internal network with the topology shown in the figure with the following address space: 170.88.130.0/23. This space is divided as follows: the network IDs for N1, N4 and N5 are 170.88.130.0/25, 170.88.131.0/24 and 170.88.130.128/26, respectively. The required minimum subnetwork capacities for N2 and N3 are the following: N2 25 hosts and N3 as many as possible. Assume the network interface name in regular hosts (A-E) is eth0. The router interface names are shown in blue in the figure. (a) Assign and clearly indicate in your answer a network ID for the remaining subnetworks and host addresses for D, R1 and R2 (do not assign any address to eth0 in R1). (b) Write the routing table for R2 and D (include default entry) using the following format: Network ID Interface Gateway or Link ??.??.??.??/?? eth? N2 eth2 D C eth0 R2 eth1 Internet eth1 eth0 A N3 R1 FU E eth1 eth0 R3 N1 eth2 B N4 N5

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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1. An ISP has an internal network with the topology shown in the figure with the following address space: 170.88.130.0/23. This space is divided as follows: the network IDs for N1, N4 and N5 are 170.88.130.0/25, 170.88.131.0/24 and 170.88.130.128/26, respectively. The required minimum subnetwork capacities for N2 and N3 are the following: N2 25 hosts and N3 as many as possible. Assume the network interface name in regular hosts (A-E) is eth0. The router interface names are shown in blue in the figure. (a) Assign and clearly indicate in your answer a network ID for the remaining subnetworks and host addresses for D, R1 and R2 (do not assign any address to eth0 in R1). (b) Write the routing table for R2 and D (include default entry) using the following format: Network ID Interface Gateway or Link ??.??.??.??/?? eth? N2 eth2 D C eth0 R2 eth1 Internet eth1 eth0 A N3 R1 FU E eth1 eth0 R3 N1 eth2 B N4 N5
Transcribed Image Text:1. An ISP has an internal network with the topology shown in the figure with the following address space: 170.88.130.0/23. This space is divided as follows: the network IDs for N1, N4 and N5 are 170.88.130.0/25, 170.88.131.0/24 and 170.88.130.128/26, respectively. The required minimum subnetwork capacities for N2 and N3 are the following: N2 25 hosts and N3 as many as possible. Assume the network interface name in regular hosts (A-E) is eth0. The router interface names are shown in blue in the figure. (a) Assign and clearly indicate in your answer a network ID for the remaining subnetworks and host addresses for D, R1 and R2 (do not assign any address to eth0 in R1). (b) Write the routing table for R2 and D (include default entry) using the following format: Network ID Interface Gateway or Link ??.??.??.??/?? eth? N2 eth2 D C eth0 R2 eth1 Internet eth1 eth0 A N3 R1 FU E eth1 eth0 R3 N1 eth2 B N4 N5
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