CCNA 3 v3.0 Module 1
Introduction to Classless
Routing
© 2003, Cisco Systems, Inc. All rights reserved.
1
Purpose of This PowerPoint
• This PowerPoint primarily consists of the Target
Indicators (TIs) of this module in CCNA version
3.0.
• It was created to give instructors a PowerPoint to
take and modify as their own.
• This PowerPoint is:
NOT a study guide for the module final assessment.
NOT a study guide for the CCNA certification exam.
• Please report any mistakes you find in this
PowerPoint by using the Academy Connection
Help link.
© 2003, Cisco Systems, Inc. All rights reserved.
2
To Locate Instructional Resource Materials
on Academy Connection:
• Go to the Community FTP Center to locate
materials created by the instructor community
• Go to the Tools section
• Go to the Alpha Preview section
• Go to the Community link under Resources
• See the resources available on the Class home
page for classes you are offering
• Search http://www.cisco.com
• Contact your parent academy!
© 2003, Cisco Systems, Inc. All rights reserved.
3
Objectives
• VLSM
• RIP version 2
© 2003, Cisco Systems, Inc. All rights reserved.
4
What Is VLSM and Why Is It Used?
© 2003, Cisco Systems, Inc. All rights reserved.
5
A Waste of Space
© 2003, Cisco Systems, Inc. All rights reserved.
6
When to Use VLSM?
© 2003, Cisco Systems, Inc. All rights reserved.
7
Calculating Subnets with VLSM
© 2003, Cisco Systems, Inc. All rights reserved.
8
A Working VLSM Example
© 2003, Cisco Systems, Inc. All rights reserved.
9
Route Aggregation
© 2003, Cisco Systems, Inc. All rights reserved.
10
Route Summarization
© 2003, Cisco Systems, Inc. All rights reserved.
11
Configuring VLSM
© 2003, Cisco Systems, Inc. All rights reserved.
12
RIP History
• RIPv1 has the following limitations:
It does not send subnet mask information
in its updates.
It sends updates as broadcasts on
255.255.255.255.
It does not support authentication.
It is not able to support VLSM or classless
interdomain routing (CIDR).
© 2003, Cisco Systems, Inc. All rights reserved.
13
RIPv2 Features
© 2003, Cisco Systems, Inc. All rights reserved.
14
Comparing RIPv1 and RIPv2
© 2003, Cisco Systems, Inc. All rights reserved.
15
Configuring RIPv2
© 2003, Cisco Systems, Inc. All rights reserved.
16
Verifying the RIP Configuration
© 2003, Cisco Systems, Inc. All rights reserved.
17
Displaying the IP Routing Table
© 2003, Cisco Systems, Inc. All rights reserved.
18
Troubleshooting RIPv2
The debug ip rip Command
© 2003, Cisco Systems, Inc. All rights reserved.
19
Troubleshooting RIPv2
The debug ip rip Outputs and Meanings
© 2003, Cisco Systems, Inc. All rights reserved.
20
Configuring Default Route
© 2003, Cisco Systems, Inc. All rights reserved.
21