5-10
Troubleshooting
Diagnosing with the LEDs
4
The stacking module on this switch has 
experienced a failure.
The Test LED on the front of the switch may 
also be blinking orange simultaneously.
1. Try resetting the switch by pressing the Reset button on the 
front of the switch, or by power cycling the switch.
2. If the fault indication reoccurs, the stacking module may 
have to be replaced.
This error could result in changes to the stack configuration 
including election of a new stack Commander, and possibly a 
new Standby. See the Stack Management chapter in the E3800 
Advance Traffic Management Guide for more information.
If necessary to resolve the problem, contact your HP authorized 
LAN dealer, or use the electronic support services from HP to 
get assistance. See “HP Customer Support Services” on 
page 5-15.
5
A stack link failure has occurred in a chain 
topology and multiple stack fragments 
have been created. Each fragment will 
elect a Commander, so there will be 
multiple switches with the Cmd LED on.
Repair the cause of the stack link failure and reconnect the 
switches in their original topology so that the switches can 
reform the original stack.
6
A stack link failure has occurred in a chain 
topology and multiple stack fragments 
have been created.
One of the fragments has been made 
inactive according to the rules of the stack 
operation. All the network ports on the 
switches in the inactive fragment are 
disabled. As a result, all the port LEDs are 
off for those switches.
Repair the cause of the stack link failure so that the switches 
can reform the original stack.
7
You have tried to merge two stacks that 
have different Stack IDs – they were not 
previously part of the same stack.
This is not allowed by the stack operation 
rules.
1. Select one of the stacks as the one to retain.
2. For the switches in the other stack, erase their stacking 
configuration by issuing the following config-level CLI com-
mand to each switch:
HP Switch(config)# stacking factory-reset
This erases the complete startup configuration for each 
switch, including the stacking configuration.
3. Add the switches to the stack as described in the Stack 
Management chapter in the E3800 Advanced Traffic 
Management Guide. 
8
You have tried to add an eleventh switch to 
a stack. A maximum of ten switches can be 
stacked together.
Disconnect the eleventh switch from the stack.
Tip Problem Solution