NAD710 Lab9

From CDOT Wiki
Jump to: navigation, search

NAD710 - Introduction to Networks - Using Linux


  • Setup a LAN with three subnets
  • Use the route and sysctl command to configure a Linux router
  • Use the network analyzing tools to study the changes in IP header when a packet crossing a router

Hardware Requiremetns

  • Five Linux Machines (FC8/FC9)
  • Two network switches (D-Link)
  • Seven Cat 5 straight through cables


  • Setup THREE networks:
    • Network A:,
    • Network B:, and
    • Network C:
  • Setup THREE Hosts, one in each network
    • Host A:
    • Host B:
    • Host C:
  • Setup TWO Linux routers: Router R-ab and R-bc
    • Router R-ab: eth0, eth1
    • Router R-bc: eth0, eth1
  • Use the ping command to verify that ALL 5 Linux systems (three hosts and two routers) can communicate with each other.
  • Run the appropriate commands on ALL five Linux systems to capture IP packets that are coming in and going out on each network interface and save to separate files
  • Use the wireshark package to study the IP header and investigate what fields were changed when a packet move from the source to the destination with routers in between the path.

Completing the Lab

Write up a report on your findings with a properly labeled network diagram and the commands used to setup the LAN. Email your report in PDF format to your instructor by the due date