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You're reading from  Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

Product typeBook
Published inNov 2020
PublisherPackt
ISBN-139781800208094
Edition1st Edition
Tools
Cisco UCS
Concepts
Network Security
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Author (1)
Glen D. Singh
Glen D. Singh
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Glen D. Singh

Glen D. Singh is a cybersecurity author, educator and SecOps professional. His areas of expertise are cybersecurity operations, offensive security tactics and techniques, and enterprise networking. He holds a Master of Science (MSc) in cybersecurity and many industry certifications from top awarding bodies such as EC-Council, Cisco, and Check Point. Glen loves teaching and mentoring others while sharing his wealth of knowledge and experience as an author. He has written many books, which focus on vulnerability discovery and exploitation, threat detection, intrusion analysis, incident response, network security, and enterprise networking. As an aspiring game changer, Glen is passionate about increasing cybersecurity awareness in his homeland, Trinidad and Tobago.
Read more about Glen D. Singh

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Understanding and configuring EtherChannels

Let's imagine you are connecting two switches using their GigabitEthernet interfaces; your objective is to combine the bandwidth of the two physical interfaces to get a total of 2 GB/s between the switches. Making the physical connections between both switches does not simply combine the bandwidth automatically. The following diagram shows a visual representation of the connection:

Figure 5.28 – Two switches connected together

Why is one link blocked between the switches? By default, Cisco switches have a layer 2 loop prevention protocol known as Spanning-Tree Protocol (STP). Therefore, physically interconnecting switches, as shown in the previous diagram, will cause STP to automatically block one of the interfaces.

This is where EtherChannels come in to save us once more. An EtherChannel allows us to combine multiple physical ports on a switch to create a single logical interface. Therefore, the...

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Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide
Published in: Nov 2020Publisher: PacktISBN-13: 9781800208094
© 2020 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Glen D. Singh

Glen D. Singh is a cybersecurity author, educator and SecOps professional. His areas of expertise are cybersecurity operations, offensive security tactics and techniques, and enterprise networking. He holds a Master of Science (MSc) in cybersecurity and many industry certifications from top awarding bodies such as EC-Council, Cisco, and Check Point. Glen loves teaching and mentoring others while sharing his wealth of knowledge and experience as an author. He has written many books, which focus on vulnerability discovery and exploitation, threat detection, intrusion analysis, incident response, network security, and enterprise networking. As an aspiring game changer, Glen is passionate about increasing cybersecurity awareness in his homeland, Trinidad and Tobago.
Read more about Glen D. Singh

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