Tasks to be undertaken for CTEC3606 Multi-Service Networks 2 Assignment
In this coursework, you are expected to answer a set of questions (Part 1 and Part 2) and configure a given network topology ‘CW.pkt’ according to a list of tasks (Part 3). You need to provide detailed step wise justification for all parts in your report. Posting final results or configurations without proper explanation that can reflect your understanding will not be marked.
Part 1: IPv4 Addressing
A. Subnet 200.25.11.0/24 to address the network topology depicted in Figure 1. Use the most efficient addressing possible. You have to present your stepwise solution with justification. Showing just the final subnets assignment will not be accepted.
B. You have decided to add a new serial link between Bldg1 and NY routers. What do you need to do to address the newly created network between the two routers?
Part 2: Dijkstra’s Shortest Path First Algorithm
Figure 2 shows a network with nodes ‘a’ to ‘f’ (these are shown circled) with the indicated link costs, use Dijkstra’s algorithm to compute the least cost path from node ‘a’ to all network nodes. Show how the algorithm works by computing a Link-state (LS) table. Then show the least cost path and the
forwarding table for source node ‘a’. You have to present a stepwise solution supplemented with proper justification. Showing the final results only will not be accepted.
Part 3: Network Configuration
Consider the following network topology depicted in Figure 3 and implemented in CW.pkt file. As a network engineer, you have been requested to accomplish tasks {A, B, C, D, E, F, G, H, and I} listed
below. You need to configure the network in the supplemented file ‘CW.pkt’ according to these tasks while providing a detailed justification for the main configuration in your report. You are not supposed to change the configuration of any end-device, i.e., a workstation, a server, or an IP-Phone.
A. Following the network labels, configure all of the routers’ serial interfaces with all DCE and DTE ends set to .1 and .2 IP addresses respectively. Clock rates have to be configured according to Table 1. In your report, you are requested to include justification for a single serial link configuration.
B. All web servers on the Internet is approachable only via their public IP addresses as registered on Google Public DNS Server (already provided in file ‘CW.pkt’). Their private IP addresses are not routable and should not be disclosed to public. Configure their gateways to enforce this rule. Hint: use NAT.
C. Configure RIPv2 in the red-circled area.
D. Configure Multi area OSPF {area 0, area 1, and area 2} giving proper route summarization, correct cost information, and router-id(s) if needed.
E. Redistribute RIPv2 updates into OSPF and vice versa.
F. Configure all of the devices in Organization A. Router 1 should act as a DHCP server for all of the workstations and IP Phones. They should all get private, unrouteable IP addresses as per the depicted network labels. PCs should be able to access the Internet via BT-ISP. IP-Phones should be allocated the following numbers depicted in Table 2:
Repeat the same for Organization B with IP-Phones allocated numbers shown in Table 3.
G. Enable telephone communication between Organization A and B. Hint: configure a dial-peer.
H. Microsoft has decided to offer its own public DNS service. For that, the topology is updated according to Figure 4. Update the topology and the configuration of ‘CW.pkt’ file so that the newly created Microsoft Public DNS Server is reachable using its public IP address 11.3.3.3. Do you notice any issues in the network? If yes, discuss how can you solve them.
I. Google has decided to create a server farm in order to serve more customers. Consider the update depicted in Figure 5, how would you use NAT to implement load-balancing across the server farm?
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