4.7.1 Packet Tracer – Skills Integration Challenge Answers

4.7.1 Packet Tracer – Skills Integration Challenge Answers



This activity focuses on subnetting skills, basic device configuration and static routing. Once you have configured all devices, you will test for end-to-end connectivity and examine your configuration.

Learning Objectives:

  • Design and document an addressing scheme based on requirements.
  • Select appropriate equipment and cable the devices.
  • Apply a basic configuration to the devices.
  • Configure static and default routing.
  • Verify full connectivity between all devices in the topology.

Task 1: Design and document an addressing scheme.

Step 1 – Design an addressing scheme.

Using the topology and the following requirements, design an addressing scheme:

  • The WAN link between R1 and ISP is already configured.
  • For the WAN links between R1 and the branch routers (B1, B2, B3 and B4), subnet the address space to provide the necessary WAN subnets. Assign the subnets using the following guidelines:
    Subnet 0: R1 <–> B1
    Subnet 1: R1 <–> B2
    Subnet 2: R1 <–> B3
    Subnet 3: R1 <–> B4
  • For the LANs attached to the branch routers, divide the address space into four equal subnets. Assign the subnets using the following guidelines:
    Subnet 0: B1 LANs
    Subnet 1: B2 LANs
    Subnet 2: B3 LANs
    Subnet 3: B4 LANs
  • For each branch router, divide that router’s LAN subnet into four equal subnets. Assign the subnets using the following guidelines:
  • B1 LANs
    Subnet 0: B1 Fa0/0
    Subnet 1: B1 Fa0/1
    Subnet 2: B1 Fa1/0
    Subnet 3: B1 Fa1/1
  • B2 LANs
    Subnet 0: B2 Fa0/0
    Subnet 1: B2 Fa0/1
    Subnet 2: B2 Fa1/0
    Subnet 3: B2 Fa1/1
  • B3 LANs
    Subnet 0: B3 Fa0/0
    Subnet 1: B3 Fa0/1
    Subnet 2: B3 Fa1/0
    Subnet 3: B3 Fa1/1
  • B4 LANs
    Subnet 0: B4 Fa0/0
    Subnet 1: B4 Fa0/1
    Subnet 2: B4 Fa1/0
    Subnet 3: B4 Fa1/1

Step 2 – Document the addressing scheme.

  • On the topology in the printed instructions, label each subnet in the blanks provided.
  • Use the table provided in the printed instructions to document the IP addresses and subnet masks. Assign the first IP address to the router interface.
  • For the WAN links, assign the first IP address to R1.

Task 2: Select equipment and cable devices.

Step 1 – Select the necessary equipment.

To add the branch routers, use the “Custom Made Devices” option and choose the 2621XM router. This router has four Serial interfaces and four Fast Ethernet interfaces in the correct configuration to ensure the “Check Results” feature functions properly for this activity.

Each router uses four switches. The switches are not part of the “Check Results” feature so any switch will satisfy the requirement for a LAN link to the branch router. Arrange the switches around each router similar to how it is shown in the topology.

Step 2 – Cable the devices.

Cable the networks according to the topology taking care that interfaces match the topology and your documentation in Task 1. R1 is the DCE side for B1, B2, B3 and B4. ISP is the DCE for the link to R1.

Task 3: Apply a basic configuration.

Using your documentation, configure the routers with basic configurations including addressing. Use cisco as the line passwords and class as the secret password. Use 64000 as the clock rate.

Task 4: Configure static and default routing.

Configure static and default routing using the exit interface argument.

  • R1 should have four static routes and one default route.
  • B1, B2, B3, and B4 should have one default route each.
  • ISP should have two static routes: one for the WAN address space and one for the LAN address space.

Task 5: Test connectivity and examine the configuration.

Step 1 – Test connectivity.

  • You should now have end-to-end connectivity. Use ping to test connectivity across the network. Each router should be able to ping all other router interfaces and the Web Server.
  • Use extended pings to test LAN connectivity to the Web Server. For example, the test the Fa0/0 interface on B1, you would do the following:
Protocol [ip]:
Target IP address:
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: yes
Source address or interface:
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:
Packet sent with a source address of
Success rate is 100 percent (5/5), round-trip min/avg/max = 67/118/138 ms
  • Troubleshoot until pings are successful.

Step 2 – Examine the configuration.

Use verification commands to make sure your configurations are complete.

Download Packet Tracer (.pka) file:

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