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Computer Network

run a private network of 3 IP routers, with one at each site as shown. Chicago and New York also have on-site Ethernet switches that connect many employees into a LAN at each site

INSTRUCTIONS TO CANDIDATES
ANSWER ALL QUESTIONS

Must be completed on DLPOD or Lab POD Hardware 

Lab Scenario:

Blue Demon Corporation has corporate office sites in Chicago, New York and Dallas.  A diagram of their corporate network is shown below.   They run a private network of 3 IP routers, with one at each site as shown.  Chicago and New York also have on-site Ethernet switches that connect many employees into a LAN at each site.   The Dallas router has a single Loopback IP address that can be pinged from any site.

Lab #1 Network Diagram

Braxton has decided that, since they have such a small network, they can just use static routes to interconnect their sites.   The static routes you configure should provide any-to-any connectivity.

 

Routing Requirements:

Packets traveling between sites should always follow the shortest possible route except for the following special rule:  NO packets can be sent from New York to Chicago across Link 1.  On the other hand, packets can be sent from Chicago to New York across Link 1.  So, for example, a packet sent from Workstation 2 to Workstation 1 should be routed through Dallas (across Link 3 and Link 2), but a packet sent from Workstation 1 to Workstation 2 should be routed across Link 1.

IPv4 Address Requirements:

For Part I of the lab, use the IPv4 address assignments show in Lab #1 Network Diagram.  There can be up to 50 workstations connected to the Chicago LAN switch (including Workstation 1).   There can be up to 150 workstations connected to the New York LAN switch (including Workstation 2).  Each workstation needs an IP address.

IPv6 Address Requirements:

For part II of the Lab, use the IPv6 address assignments outlined below:

  • Chicago LAN subnet: 2060:FACE:0:C::/64
  • New York LAN subnet: 2060:FACE:0:B::/64
  • Dallas Lo0: 2060:DAD:0:D::1/128
  • Link1 subnet: 2060:DAD:0:1::/64
  • Link2 subnet: 2060:DAD:0:2::/64
  • Link3 subnet: 2060:DAD:0:3::/64

Lab Environment:

You MUST configure and test this lab using the POD or DLPod Cisco lab equipment.

DLPod instructions:

  1. Instructions for reserving time and connecting to DLPods can be found at http://netlabs.cdm.depaul.edu/Resources.html.
  2. You will need a telnet/SSH connection application.  We recommend PuTTY for Windows (download from lab resources page) or Terminal for Mac.  Open a Telnet or SSH window for managing each device as follows:

Device

Protocol

IP

Port

R1

Telnet

100.1.1.1

2400

R2

Telnet

100.1.1.1

2500

R3

Telnet

100.1.1.1

2600

Workstation 1

SSH

100.1.1.11

22

Workstation 2

SSH

100.1.1.21

22

  1. Hit Enter once or twice in each window to get command prompt.  Login on Workstations (Linux) as Username: root; Password: student.

Lab Configuration:

Follow these steps to complete the lab:

  1. Configure all IP interfaces on all devices using addresses from Table 1 above and subnet masks according to Table #1: Subnet Design that you filled out in Lab #1 Report section.  Remember to do a no shutdown on each router interface.  Set default gateway values on Workstations to the local router interface.
  2. For each of the three inter-router serial links, you must set the link speed by configuring clock rate 512000 on each of the DCE interfaces.
  3. Verify Layer 3 functionality across each 1-hop link by pinging between pairs of directly connected devices.  For example, on router R3, you can execute a ping to test link between R3 and Workstation 2, then ping 10.1.1.5 to test Link 1, then ping 10.1.1.9 to test Link 2.
  4. Now add your static IPv4 routes to each router table using ip route commands following your plan that you filled out in Table 2 in the Lab #1 Lab Report section. 
  5. Test end-to-end routing by executing pings between work stations.
  6. Now complete the Lab Report and questions by executing the commands specified and pasting all screenshots requested.

After configuring your lab, a user typing commands on any of the following 5 devices: WS 1, WS 2, R1, R2, R3 will be able to successfully ‘ping’ or ‘traceroute’ to any of the IP addresses shown in Table #1. 

 

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