Cisco Router EXPERT Shares Top Troubleshooting Commands

Описание: This Video is all about Common Troubleshooting commands on Cisco Router
The Cisco Router Troubleshooting Commands You NEED to Know! (2024)
1. Basic Connectivity

• ping [destination IP]: Checks connectivity to a specific device or IP address.
• traceroute [destination IP]: Identifies the path packets take to a destination.

2. Show Commands

• show running-config: Displays the current configuration.
• show startup-config: Shows the configuration stored in NVRAM.
• show IP interface brief: Displays a summary of interfaces and their IP statuses.
• show interfaces: Provides detailed information about all interfaces.
• show IP route: Displays the routing table.
• show version: Displays hardware and software information.
• show logging: Shows system logs.
• show protocols: Displays the status of configured protocols.

3. Interface Troubleshooting

• show controllers [interface]: Checks the status of interface hardware.
• show interface [interface]: Examines details for a specific interface (e.g., errors, drops, speed, duplex).
• clear counters [interface]: Resets interface statistics for easier troubleshooting.

4. Routing and Protocols

• show IP protocols: Displays routing protocols and their configuration.
• show IP bgp summary: Displays BGP session status.
• show IP ospf neighbor: Shows OSPF neighbors.
• show IP eigrp neighbors: Displays EIGRP neighbor information.

5. Testing and Debugging

• debug ip packet: Debugs IP packets (use cautiously, as it can impact performance).
• debug interface [interface]: Debugs traffic on a specific interface.
• undebug all: Turns off all debugging (important after using debug commands).

6. Other Useful Commands

• show arp: Displays the ARP table.
• show cdp neighbors: Shows directly connected Cisco devices.
• clear arp-cache: Clears the ARP table.
• reload: Restarts the router (use with caution).

Command Tips:

• Always verify configurations and routing issues using show commands before applying changes.
• Use terminal monitor to display log messages on the terminal.
• Redirect logs to a syslog server for easier analysis using logging host [IP].

If you encounter a specific issue, let me know for guidance!


#volgmas #ccna #ciscopackettracer #packettracer #network #similator #server #clientserver #security

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