Reference Guide

Stacking | 565
Troubleshooting a Switch Stack
Troubleshooting Commands
To perform troubleshooting operations on a switch stack, use the commands in Table 31-3 on the master
switch.
Figure 31-15. show system stack-ports Command Example
Table 31-3. Troubleshooting Stack Commands
Command Output
show system stack-ports (Figure 31-15) Displays the status of stacked ports on stack units.
show redundancy (Figure 31-16) 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 31-15)
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.
FTOS# show system stack-ports
Topology: Ring
Interface Connection Link Speed
(Gb/s)
Admin
Status
Link
Status
Trunk
Group
0/41 2/45 40 up up
0/45 1/41 40 up up
1/41 0/45 40 up up
1/45 2/41 40 up up
2/41 1/45 40 up up
2/45 0/41 40 up up