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CCNA Routing and Switching 200-125 Certification Guide

You're reading from   CCNA Routing and Switching 200-125 Certification Guide The ultimate solution for passing the CCNA certification and boosting your networking career

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781787127883
Length 504 pages
Edition 1st Edition
Tools
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Author (1):
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Lazaro (Laz) Diaz Lazaro (Laz) Diaz
Author Profile Icon Lazaro (Laz) Diaz
Lazaro (Laz) Diaz
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Toc

Table of Contents (24) Chapters Close

Preface 1. Internetworking Models FREE CHAPTER 2. Ethernet Networking and Data Encapsulations 3. Introducing the TCP/IP 4. Subnetting in IPv4 5. Variable Length Subnet Mask and Route Summarization 6. The IOS User Interface 7. Managing the Cisco Internetwork 8. Managing Cisco Devices 9. The IP Routing Process 10. The IPv6 Protocol 11. Introduction to IPv6 Routing 12. Switching Services and Configurations 13. VLANs and Inter-VLAN Routing 14. Introduction to the EIGRP Routing Protocol 15. The World of Open Shortest Path First (OSPF) 16. Border Gateway Protocol 17. Access-Control List 18. Network Address Translation 19. Wide Area Networks 20. Advanced Networking Topics 21. Mock Test Questions
22. Assessments
23. Other Books You May Enjoy

Broadcast control

Controlling broadcasts in your network is one of your top priorities, so by using switches, that uses private collision domains with full-duplex and that allows us to transmit and receive at the same time. You now know we can create VLANs that break up the broadcast domain into smaller logical segments.

We must still be wary of broadcasts on our network, or each VLAN. If you place too many nodes on one VLAN, that segment could get overwhelmed, so you must constantly monitor you network/VLANs to make sure that traffic is still flowing efficiently.

One thing IT personnel overlook is protocols—every protocol creates some type of broadcast. It depends on three basic things:

  • The type of protocol
  • The application running on the network
  • How the services are being used

So, it is not just creating VLANs and forgetting about it; we could be our own worst enemy...

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