Administrator Guide

The following example turns on the green blinking light on the main PSU LED on port extender 0 stack unit 5.
Dell#location-led pe 0 stack-unit 5 on
The following example disables the location-led feature on the PE stack-unit 5
Dell#location-led pe 0 stack-unit 5 off
Troubleshooting a PE Stack
To troubleshoot the operation of a PE stack, use the following tasks.
Diagnosing an Error Condition
For debugging purposes, you can prevent the stack master from rebooting after a failover to allow you to gather information on
stack operation.
CONFIGURATION mode
redundancy disable-auto-reboot pe pe-id stack-unit unit-number
● pe-id — port-extender identifier of the master unit. The range is 0 through 255.
Dell(conf)# redundancy disable-auto-reboot pe 2 stack-unit unit-number
NOTE:
The redundancy disable-auto-reboot pe command does not affect a forced failover, manual reset, or a
stack-link disconnect.
Using PE Console Commands
To debug an error condition in a PE stack, you can connect a console to the console port on the master unit and enter PE
console commands. Contact Dell Networking support for assistance. The supported PE console commands are described in the
C9000 Series Command-Line Reference Guide.
Splitting a Daisy-Chained PE Stack
If you split a PE stack in a daisy-chain topology into two sub-stacks and each sub-stack has a PE uplink to the controlling bridge,
the C9010 detects the stack split and generates an alarm. System administrator intervention is required to diagnose and correct
the split condition; for example, check cable connections or reboot stack units to reactivate each PE stack.
Port Extender (PE) Stacking
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