Error#2. How to Troubleshoot Trunk Mode Mismatches Trunk mode mismatches in networking occur when there is a configuration inconsistency between network devices (like switches) connected through a trunk link. A trunk link is used to pass traffic from multiple VLANs across network devices. Understanding trunk mode mismatches requires a grasp of a few key concepts: Trunk Mode: In… Read More »
How to troubleshoot VLANs and Trunks. Common Errors On this page(s), we will look at common VLAN and trunking problems, which most times are caused by incorrect configurations. As I said earlier on the NAT troubleshooting page, the most common mistakes in troubleshooting are not your inability to use commands but the laxity in the examination of entries… Read More »
Other factors may still disrupt your network even if you have properly configured the switches in your VTP domain. These factors can negatively impact the operation of VTP. The topology diagram below is configured with VTP. There is one VTP server switch, SW1, and two VTP client switches, SW2 and SW3. SW1, SW2, and SW3 are configured with the same VTP domain name… Read More »
What is the Spanning Tree Protocol (STP)? STP is used by switches to prevent loops from occurring on a network, this process is implemented by using the spanning tree algorithm to disable unwanted links and blocking ports that could cause a loop. Here are the key points about STP: Purpose: In a network with multiple paths between switches,… Read More »
Understanding IP Addresses. An IP address is uniquely used to identify a device on an IP network. The address is made up of 32 binary bits, which can be divisible into a network portion and host portion with the help of a subnet mask. The 32 binary bits are broken into four octets (1 octet = 8 bits). Each… Read More »
