COMP2009 Packet Tracer: Rou.ng

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Packet Tracer: Rou.ng

Previously, we set up a single router that connects two networks, so no rou7ng policy needs to be configured. In this lab, you will first need to learn from the next sec7on, “Router CLI terminal”, how to set up sta7c/dynamic rou7ng policies.

Router CLI Terminal

The following are brief explana7ons of some commonly used commands for seGng up routers: Switching

Different Modes

Default status, in “User EXEC”: can only see some aspects of the router

Router>

Using the command “enable” brings the user to “Privilege EXEC”: can see all the configura7on of the router

Router>enable

Router#
Using the command “configure terminal” brings the user to “Configure Mode”: Can make changes to the configura7on. Type “exit” to quit.
Router# configure terminal
Router(config)#
Router(config)# exit
The Show Command
Before doing any ac7ons, it helps you checking the current configura7on informa7on on the router. It also shows you a list of commands that you can use.
When you set up your network topology, try the following:
Router# show ?
Router# show interfaces
Router# show ip interface brief
Router# show ip interface FastEthernet 0/1
The Interface Command

To review what you have configured, such as IP address for a specific router interface, in “Configure Mode”, specify the “interface-name interface-number(slot/port)”

Router(config)# interface FastEthernet 0/1
Router(config-if)# ip address 192.168.1.5 255.255.255.0
Router(config-if)# no shutdown
Router(config-if)# exit
AVer seGng up its corresponding IP address and subnet mask, don’t forget to make it work by typing “no shutdown”. Then “exit”, to use “show” command for this interface to check if the previous seGng is successful.
Add/Remove sta?c routes
Sta7c routes tell a router where to send packets for a network that this router does not connect to directly.

In this case, the router will forward this packet to an interface of one of the routers that this router directly connects to.

Checking the exis7ng rou7ng table:
Router# show ip route

Then add a route, e.g.: any packets intend to go to the network “192.168.2.0 / 255.255.255.0”, will be forwarded to the next hop router interface “192.168.3.1”:

Router(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
If you want to remove this sta7c rou7ng policy, just use “no” format:
Router(config)# no ip route 192.168.2.0 255.255.255.0 192.168.3.1
Add a Dynamic Rou?ng Protocol – OSPF
Router(config)# router ospf 1
Router(config-router)# network 192.168.0.0 0.0.255.255 area 1
The “1” in both “router ospf 1” and “area 1” are not important for our lab, so leave it same as “1” everywhere. “network 192.168.0.0 0.0.255.255”: means any of this router’s next hop router interface begins with “192.168” will be configured with OSPF protocol. “0.0.255.255”: is a wildcard mask. It is NOT a subnet mask.

Assignment # 2 – Packet Tracer (15%)

Network Topology for Bank of China
Q1. Create a network topology for Bank of China, considering the main components to support the following:
  • Bank Location
  • The Headquarters in Beijing:
    • Executive/Admin Office: Office PCs for management and administrative staff.
    • IT Department:
    • Customer Service Department: Equipped with staff PCs for handling client services.
    • Server Room:
      • Web Server
      • Customer Database Server
      • Transaction Server
  • The bank has at least three branches in different towns. For example:
    • • Branch 1 – Shanghai:
      • Accounts Department
      • Loan Services Department
    • • Branch 2 – Guangzhou:
      • Customer Service Department
    • • Branch 3 – Shenzhen:
      • IT Department
  • Each department/office is expected to be on its own separate IP network.
  • The switches should be configured with appropriate LANs using VLANs.
  • OSPF should be used to provide routing for routers in the internal network. Static routing should be used for the external cloud-based email server.
  • Devices in the IT Department of the Shanghai Branch should acquire dynamic IP addresses via a router based DHCP server.
  • The IP address for all subnets should begin with your UCD student number as the bank’s identifier number. For example, if the number is 192 022 02, then it should be 192.22.2.x. Use at least (could be longer) 25 bits as your network prefix.
  • You can estimate the number of IP addresses in any subnet, but it should be reasonable based on the expected devices.

Q2. How many subnets are in the network topology you built?

Q3. Show how you calculate the CIDR IP for each subnet.

Q4. List your IP address, subnet mask, and gateway setup for all PCs and router interfaces.

Q5. Show an example of a static route in your network. For instance, if PC1 needs to connect to PC2, the route should be: PC1 → Router1 → Router3 → Router2 → PC2. Then:

1. List in a table the key commands used in each router.
2. After this setup, provide a screenshot of the routing table on each router.
3. When you can successfully PING PC0 → PC2, demonstrate how you can trace its realistic route that is correctly set.
4. Set up OSPF on each router; you should remove the previously configured static route on each router.
5. Explain how OSPF differs from the static route regarding link-state changes.

Q6. Demonstrate your understanding of how broadcast messages function within a department, at headquarters, and throughout the entire bank based on your network design.

Submission:
• .pkt file for the network topology (Logical and Physical)
• A PDF report with answers for the “Questions,” supporting all your answers with screenshots
• A short video (Max: 3 minutes) to explain and test your network topology
Submission Deadline:

You should submit your assignment by Friday, 23 May 2025

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