Book Image

CCENT/CCNA: ICND1 100-105 Certification Guide

By : Bekim Dauti
Book Image

CCENT/CCNA: ICND1 100-105 Certification Guide

By: Bekim Dauti

Overview of this book

CCENT is the entry-level certification for those looking to venture into the networking world. This guide will help you stay up-to date with your networking skills. This book starts with the basics and will take you through everything essential to pass the certification exam. It extensively covers IPv4 and IPv6 addressing, IP data networks, switching and routing, network security, and much more—all in some detail. This guide will provide real-world examples with a bunch of hands-on labs to give you immense expertise in important networking tasks, with a practical approach. Each chapter consists of practice questions to help you take up a challenge from what you have procured. This book ends with mock tests with several examples to help you confidently pass the certification. This Certification Guide consists of everything you need to know in order to pass the ICND 1 100-105 Exam, thus obtaining a CCENT certification. However, practicing with real switches and routers or a switch or router simulator will help you succeed.
Table of Contents (18 chapters)
10
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Appendix G: Graphical Network Simulator-3 (GNS3)

Troubleshooting VLANs

In this section, you will get acquainted with some of the possible scenarios of problems that may occur in VLANs.

IP addressing issues with VLANs

VLANs have taught us that every VLAN is characterized by a unique IP subnet. Thus, if two devices in the same VLAN have different subnet addresses, then they cannot communicate. These are common problems and their solutions require that incorrect configurations should be identified and replaced by correct configurations. In the aforementioned situation, the incorrect subnet address must be replaced with a correct subnet address. Next, the ping command confirms the solution you implemented.

You can learn more about VLANs and troubleshooting VLANs from http:/...