Скачать или смотреть CCNA Full Course Class #09 | Cisco Show Commands & Interface Status Troubleshooting | Pentest Craft

🚀 Welcome to Class #09 of the CCNA Full Course by Pentest Craft! In this lesson, we explore essential Cisco show commands and interface status troubleshooting techniques, which are critical for network configuration and troubleshooting.

📌 Topics Covered in This Class:
🔍 Understanding Cisco Show Commands:
🔹 show run – Displays the running configuration (active settings)
🔹 show start – Shows the startup configuration (saved settings)
🔹 show version – Provides hardware, software details, and system uptime

🌐 Analyzing Interface Status with show interface:
1️⃣ Interface is UP + Line Protocol is UP ✅

Normal working state (e.g., Active connection between Jazz & PTCL)
Indicates a properly functioning network link
2️⃣ Interface is UP + Line Protocol is DOWN ⚠️

Layer 2 issue (e.g., Encapsulation mismatch, wrong VLAN, or remote side down)
Example: One side is up, but the other end is down
3️⃣ Interface is DOWN + Line Protocol is DOWN ❌

Physical connectivity issue (Cable unplugged, faulty hardware, or device powered off)
Example: Both ends are down due to a disconnected cable
4️⃣ Interface is ADMIN DOWN + Line Protocol is DOWN 🔒

Interface has been manually disabled (shutdown command applied)
Needs to be enabled using the no shutdown command
🎯 Key Takeaways:
✅ Learn how to check hardware and software details using Cisco show commands
✅ Understand different interface states and how to troubleshoot connectivity issues
✅ Identify physical and logical network problems with real-world scenarios

This class is essential for CCNA candidates and network engineers who want to master Cisco networking and troubleshooting techniques.

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