Category: Troubleshooting

Troubleshoot VLANs and Trunks

This post lists the commands useful for troubleshooting VLAN and Trunk ports on Cisco switch. Continue Reading

Troubleshoot Ethernet port

Many times when a single user reports problem with his network connection you start troubleshooting from checking the state of Ethernet port on the switch. Continue Reading

Cisco LAP – troubleshooting notes

This post contains notes related to troubleshooting Cisco LAPs and wireless clients. Continue Reading

LAP registration to WLC

This post is about troubleshooting Cisco LAP connection to WLC.  Continue Reading

Cisco AP – troubleshooting notes

This post contains notes related to troubleshooting Cisco APs (in autonomous mode) and wireless clients. Continue Reading

LINK-3-UPDOWN vs LINEPROTO-5-UPDOWN

This post describes the difference between LINK and LINEPROTO syslog messages.
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