Switch User Manual

T ROUBLESHOOTING
A-4
Stack Troubleshooting
If a stack fails to initialize or function, first check the following items:
• Check that all stacking cables are properly connected.
• Check if any stacking cables appear damaged.
• Check that only one Stack Master button is pressed in.
• Check that all switches in the stack are powered on.
After checking all items, reboot all the switches in the stack.
The switches allow you to configure ring- or line-topology stacking. When
using ring-topology stacking configuration and a switch fails, or a stacking
cable is disconnected, the entire stack reboots and resumes normal
operation using line-topology stacking through the remaining stack
connections. Also, any changes to the stack including powering down a
unit or inserting a unit causes the stack to reboot.