Allied Telesis AlliedWare Plus x950 Series Installation Manual page 203

stackport
 If necessary, repeat the STACKPORT command. For information,
refer to "STACKPORT" on page 135. Afterwards, save your
changes and reboot the switch.
Problem 10: You removed a port from a stack trunk with the NO
STACKPORT command, but the port is still not forwarding regular
Ethernet traffic.
 Display the running configuration to verify that the port is no longer
part of the stack trunk.
 You have to reboot the switch whenever you add or remove ports
from stack trunks with the STACKPORT and NO STACKPORT
commands. Be sure to save the change to the configuration file
with the WRITE command before rebooting the unit.
Problem 11: The switch overheats and shuts down.
Solutions: Try the following:

Verify that the location of the switch allows for adequate airflow.

If the switch is operating, use the SHOW SYSTEM
ENVIRONMENT command in the Privileged Exec mode to verify
that the power supplies and fan modules are operating properly.
Problem 12: The switch functions intermittently.
Solutions: Try the following:
 Use the SHOW SYSTEM ENVIRONMENT command in the
Privileged Exec mode to verify that the input voltage from the
power source to the switch is stable and within the approved
operating range. The unit will shut down if the input voltage
fluctuates above or below the approved operating range.

Use the SHOW SYSTEM ENVIRONMENT command in the
Privileged Exec mode to verify that the fan modules are operating
correctly.
 Verify that the location of the switch allows for adequate airflow.
The unit will shut down if it overheats.
Problem 13: The Switch ID LED in the management panel is flashing "F."
Solutions: One of the following problems has occurred:
 A cooling fan has failed.
 The internal temperature of the switch is outside the normal
operating range and the unit might shut down.
Contact your Allied Telesis sales representative for assistance.
x950 Series Installation Guide for VCStack
203