Traceroute is a convenient network diagnostic tool for tracking the pathway taken by a packet on an IP network from...
1. Identify the issue: Do your best to get all the data possible to help troubleshoot the issue. 2. Determine...
Layer 2 forwarding is a critical function in any switch or router. When troubleshooting L2 connectivity issues, the MAC address...
Both `BPDU Filter` and `BPDU Guard` are features of the Spanning Tree Protocol (STP) used to control the behavior of...
Scenario: We have a subnet configured in the “Allowed prefixes,” a /16. You can’t change the size of a subnet...
In network engineering, configuring a production device can be a high-stakes operation. One wrong command could cause a cascade of...
Cisco NX-OS, the network operating system running on Nexus series switches, offers powerful troubleshooting tools to network administrators. Among these...
When it comes to Border Gateway Protocol (BGP), there’s a myriad of configuration options available to network engineers. One command...
NetFlow is a network protocol developed by Cisco for collecting IP traffic information and monitoring network traffic. By analyzing flow...