General Troubleshooting
Verifying Connections
Pinging
Verifying interface connections
Using trace route
Monitoring and documentation
Learn about the hosts on the network
Troubleshooting Wireless Networks (WLAN)
Methodical approach
Incorrect channel setting
Identifying problems with device Placement
Problems with authentication and encryption
Using show command
Using debug command
Common trunk problems
Native trunk mismatch
Trunk mode mismatch
Allowed VLANs on trunks
Incorrect VLANs IP subnet configurations
Incompatible VTP versions
VTP password issues
Incorrect domain names
Server switch set to client mode Incorrect revision number
Managing VLANs in a VTP enabled Network
Switch Configuration Issues
Router-on-a-Stick Issues
