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Certified - CompTIA Network + Audio Course

Episode 173: Interface, Routing, and Platform-Specific Diagnostics

20 Jul 2025

Description

Every device platform—whether Cisco, Juniper, or another—has its own diagnostic approach. In this episode, we explore common troubleshooting techniques across routers and switches, focusing on interface states, routing tables, and platform-specific commands. You’ll learn how to interpret “up/down” messages, diagnose err-disabled ports, and use commands like show ip route, show interfaces, and debug.We also discuss platform-specific behaviors and logs that can reveal problems with routing adjacencies, VLAN configuration, or control plane performance. Whether you’re troubleshooting routing loops or verifying VLAN tagging, understanding platform outputs is critical for resolution. This episode equips you to make the most of your command line regardless of the hardware brand.

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