A student is trying to build a network as shown in the below topology diagram. However, when the student tried to ping PC3 from PC1, the ping was not successful. Use the knowledge that you have learned from this subject, analyse what steps to take in order to identify and fix the problem in a systematic way. Include the Cisco and/or Windows commands that you would use. You will need to consider Layers 3, 2 and 1 problems respectively. 10.12.0.0/30 S0/0/0 S0/0/1 R1 R2 Fa0/1 iFa0/0 PC1 10.0.10.0/24 trunk 10.0.30.0/24 Fa0/1 Fa0/10 PC2 10.0.20.0/24 Switch PC3 Fa0/20 (PS. Your answer should reflect the specific scenario of this topology. Do NOT simply list the general troubleshooting steps.)
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Sri K.
192.168.1.97/27 192.168.1.98/27 R1 192.168.1.55/27 192.168.1.69/28 192.168.1.129/27 R2 192.168.1.222/28 Host 1 Host 2 Host 3 Host 4 IP: 192.168.1.35 IP: 192.168.1.72 SM: 255.255.255.224 SM: 255.255.255.240 GW: 192.168.1.55 GW: 192.168.1.69 IP: 192.168.1.130 IP: 192.168.1.225 SM: 255.255.255.224 SM: 255.255.255.240 GW: 192.168.1.129 GW: 192.168.1.222 In the network diagram above, determine why Host 4 cannot ping Host 1. Explain what happens to the ICMP packets. The IP addresses given above are interface addresses for the routers (with the corresponding mask length given in CIDR notation). They are not subnet addresses. You can reasonably assume that the routers R1 and R2 have advertised the network routes they know about to each other, and each router has learned about network routes by way of the direct connections to their respective networks. Such routes are installed in the routing table for the router and will be advertised to its neighbors.
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Consider the network above and use VLSM to subnet the network using the most efficient subnetting scheme for the LANs and the WANs. The WAN links are to be allocated from the network range directly following the LANs. The LAN subnets must be large enough to accommodate the number of actual host machines and no larger. For the task you are to select a public network address (class A, B or C) to provide the most efficient solution. Location Number of Actual Host machines Dublin 1200 Odessa 450 Moscow 200 London 50 Athens 40 Once subnetted you are to allocate the first useable network address to each router interface along with its subnet mask.
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