plugin-ITL-S01-lab3

plugin-ITL-S01-lab3 - Lab 3 Multiple Segment IP Networks...

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Multiple Segment IP Networks and Static Routing What you will learn in this lab: How to turn a computer with multiple interfaces into a router How to set up static routing How ICMP messages update routing table entries How to work with subnet masks How to interpret ping , traceroute , and tcpdump measurements to determine the setup of a route Copyright 2001, Jörg Liebeherr. All Rights Reserved. Lab 3
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ITL LAB 3 - PAGE 2 SPRING 2001 Table of Content Prelab 3 .................................................................................................................... 3 Lab 3 ............................................................................................................................ 4 Setup for Lab 3. .................................................................................................................... 6 Part 1. Setting up a network topology. .................................................................................. 6 Part 2. Configuring network interfaces . ................................................................................. 7 Part 3. Setting up routing tables . ........................................................................................ 10 Part 4. ICMP redirect. ........................................................................................................ 13 Part 5. Changing netmasks. ............................................................................................... 13 Checklist Form for Lab 3 ........................................................................ 15 Feedback Form for Lab 3 .................................................................. 16
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ITL LAB 3 - PAGE 3 SPRING 2001 Prelab 3 1. Refer to the textbook and answer the following questions. 1.1. When is static routing advantageous over dynamic routing? 1.2. How does a router know that a particular host is reachable through one of its interfaces? 1.3. If you compare IP routers and hosts, what is the defining characteristic of an IP router. Give a detailed response? 2. Who can generate ICMP Redirect messages? Routers, hosts, or both? 3. The following exercises require that you have access to a UNIX account . 3.1. The command ping –Rv is similar to traceroute in that it displays the route of IP datagrams. However, ping –Rv and traceroute use very different approaches to gather the information. Describe how traceroute and ping –Rv gather information. 3.2. What is the default maximum TTL (time to live) field used by traceroute in outgoing “probe” packets? 3.3. Sometimes, traceroute displays *** as an output instead of the name of the hop that it encountered. Why does traceroute print this output and what does it mean? 4. What is the difference between an Ethernet Switch and a hub?
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This note was uploaded on 09/15/2011 for the course ECE 470 taught by Professor Arnilenelson during the Spring '11 term at N.C. State.

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plugin-ITL-S01-lab3 - Lab 3 Multiple Segment IP Networks...

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