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You're reading from CCENT/CCNA: ICND1 100-105 Certification Guide Learn computer network essentials and enhance your networking skills by obtaining the CCENT certification

Product type Paperback

Published in Apr 2018

Publisher

ISBN-13 9781788621434

Length 362 pages

Edition 1st Edition

Tools

Linux

Concepts

IT Certification

Author (1):

Bekim Dauti

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Table of Contents (23) Chapters

Title Page

Dedication

Packt Upsell

Contributors

Preface

1. Introduction to Computer Networks FREE CHAPTER

2. Communication in Computer Networks

3. Introduction to Switching

4. Setting Up the Switch

5. Introduction to Routing

6. Setting up the Router

7. Networking Services and Maintenance

8. Network Troubleshooting

9. Studying and Preparing for ICND 1 (100-105) Exam

1. Appendix A: Answers to Chapter Questions

2. Appendix B: Cisco Device Icons

Cisco network topology icons

3. Appendix C: Numbering Systems and Conversions

4. Appendix D: Boolean Algebra

5. Appendix E: Subnetting

6. Appendix F: Cisco Packet Tracer

7. Appendix G: Graphical Network Simulator-3 (GNS3)

8. Other Books you may enjoy

Index

Frame forwarding methods

We now know that switches work on the principle of frame forwarding.As soon as the frame enters the switch through the incoming port, the frame is examined, and then forwarded to the device at the destinations via the outgoing port.However, it cannot be said that there is a single method of frame forwarding.A variety of frame forwarding methods are discussed in the following sections.

Store-and-forward switching

Among the features mentioned in brief in the section Features of the switch, we discussed storing frames. In a meaningful format, the storing frames feature is based onstore-and-forward switching. This switching method means that once the frame enters the switch, its data is stored until the whole frame arrives. During the time that the frame is kept in buffers, it is analyzed for destination information. In addition, using Cyclic Redundancy Check (CRC), the switch checks the frame for errors. If the frame contains errors, then the frame is discarded. Conversely...