Ingeniero

Lab 8.4.1: Investigating the Routing Table Lookup Process

Learning Objectives
Upon completion of this lab, you will be able to: Cable a network according to the Topology Diagram. Erase the startup configuration and reload a router to the default state. Perform basic configuration tasks on a router. Determine level 1 and level 2 routes. Modify the configuration to reflect static and defaultrouting. Enable classful routing and investigate classful routing behavior. Enable classless routing and investigate classless routing behavior.

Scenarios
In this lab activity, there are two separate scenarios. In the first scenario, you will examine level 1 and level 2 routes in the routing table. In the second scenario, you will examine classful and classless routing behavior. Scenario A:Level 1 and Level 2 Routes Scenario B: Classful and Classless Routing Behavior

All contents are Copyright © 1992–2007 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.

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CCNA Exploration Routing Protocols and Concepts: The Routing Table: A Closer Look

Lab 8.4.1: Investigating the Routing Table Lookup Proccess

Scenario A: Level 1 and Level 2Routes Topology Diagram

Addressing Table Default Gateway
N/A N/A N/A N/A N/A N/A N/A 172.16.1.1 172.16.3.1 172.16.4.1

Device
R1

Interface
Fa0/0 S0/0/0 Fa0/0

IP Address
172.16.1.1 172.16.2.1 172.16.3.1 172.16.2.2 192.168.1.1 172.16.4.1 192.168.1.2 172.16.1.10 172.16.3.10 172.16.4.10

Subnet Mask
255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0

R2

S0/0/0 S0/0/1

R3 PC1 PC2 PC3

Fa0/0 S0/0/1 NIC NIC NIC

Task 1: Prepare the Network.
Step 1: Cable a network that is similar to the one in the Topology Diagram. You can use any current router in your lab as long as it has the required interfaces shown in the topology. Note: If you use 1700, 2500, or 2600 routers, the routeroutputs and interface descriptions will appear different.

All contents are Copyright © 1992–2007 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.

Page 2 of 10

CCNA Exploration Routing Protocols and Concepts: The Routing Table: A Closer Look

Lab 8.4.1: Investigating the Routing Table Lookup Proccess

Step 2: Clear any existing configurations on therouters.

Task 2: Perform Basic Router Configurations.
Perform basic configuration of the R1, R2, and R3 routers according to the following guidelines: 1. Configure the router hostname. 2. Disable DNS lookup. 3. Configure an EXEC mode password. 4. Configure a message-of-the-day banner. 5. Configure a password for console connections. 6. Configure a password for VTY connections.

Task 3:Configure and Activate Serial and Ethernet Addresses.
Step 1: Configure interfaces on R1, R2, and R3. Configure the interfaces on the R1, R2, and R3 routers with the IP addresses from the table under the Topology Diagram. Step 2: Verify IP addressing and interfaces. Use the show ip interface brief command to verify that the IP addressing is correct and that the interfaces are active. When you havefinished, be sure to save the running configuration to the NVRAM of the router. Step 3: Configure Ethernet interfaces of PC1, PC2, and PC3. Configure the Ethernet interfaces of PC1, PC2, and PC3 with the IP addresses and default gateways from the table under the Topology Diagram. Step 4: Test the PC configuration by pinging the default gateway from the PC.

Task 4: Configure RIP.
Configure RIPversion 1 routing on each of the routers. Include network statements for each of the directly connected networks.

All contents are Copyright © 1992–2007 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.

Page 3 of 10

CCNA Exploration Routing Protocols and Concepts: The Routing Table: A Closer Look

Lab 8.4.1: Investigating the Routing Table Lookup Proccess...