Reference Guide

Stacking | 215
Troubleshooting a Switch Stack
Troubleshooting Commands
To perform troubleshooting operations on a switch stack, use the commands in Table 17-4 on the master
switch.
Figure 17-25. show system stack-ports Command Example
Table 17-4. Troubleshooting Stack Commands
Command Output
show system stack-ports (Figure 17-25) Displays the status of stacked ports on stack units.
show redundancy (Figure 17-26) Displays the master 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 (Figure 17-25)
Displays input and output flow statistics on a stacked port.
clear hardware stack-unit unit-number counters Clears statistics on the specified stack unit. Valid stack-unit
numbers: 0 to 5.
show system stack-unit unit-number iom-mode Displays the current operational mode of the Aggregator
(standalone or stacking) and the mode in which the Aggregator
will operate at the next reload.
FTOS# show system stack-ports
Topology: Ring
Interface Connection Link Speed Admin Link Trunk
(Gb/s) Status Status Group
------------------------------------------------------------------
0/33 1/33 40 up up
0/37 1/37 40 up up
1/33 0/33 40 up up
1/37 0/37 40 up up