Reference Guide

Troubleshooting a Switch Stack
To perform troubleshooting operations on a switch stack, use the following commands on the master
switch.
Command Output
show system
stack-ports
status
Displays the status of stacked ports on stack units.
show
redundancy
Displays the standby unit status, failover configuration, and result of the last
master-standby synchronization; allows you to verify the readiness for a stack
failover.
show hardware
stack-unit
unit-number
stack-port
port-number
Displays input and output flow statistics on a stacked port.
clear hardware
stack-unit
unit-number
counters
Clears statistics on the specified stack unit. The valid stack-unit numbers are from 0
to 11.
Example of the show system stack-ports status Command
Dell#show system stack-ports status
Topology: Ring
Interface Link Speed Admin Link Trunk
(Gb/s) Status Status Group
------------------------------------------
0/4 10 up up
0/5 10 up up
0/6 10 up up
0/7 10 up up
0/8 10 up up
0/9 10 up up
0/10 10 up up
0/11 10 up up
1/4 10 up up
1/5 10 up up
1/6 10 up up
1/7 10 up up
1/8 10 up up
1/9 10 up up
1/10 10 up up
1/11 10 up up
1/12 10 up up
1/13 10 up up
1/14 10 up up
Example of the show redundancy Command
Dell#show redundancy
-- Stack-unit Status --
------------------------------------------------
Mgmt ID: 0
908
Stacking