Cisco Switch Diagnose

• show interfaces gigabitEthernet 1/0/1

• show controllers utilization

• show platform pm if-numbers

• show platform port-asic stats drop gigabitEthernet 1/0/1

• show platform ip unicast failed route

• show tech-support

• show interface | include line|\/sec

• show logging

• show processes cpu history

• show processes cpu sorted

• show int | include L2|line|broadcast

Links

• http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_58_se/command/reference/2960cr/showplat.html
• http://monsterdark.com/wp-content/uploads/Troubleshooting-Cisco-Catalyst-2960-3560-and-3750-Series-Switches.pdf
• http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/28943-170.html#stp_fails