Administrator Guide

Switch Management Commands 2254
Syntax
stack-port {fortygigabitethernet|tengigabitethernet} unit/slot/port {ethernet
| stack}
Default Configuration
By default, Ethernet ports are configured to operate in Ethernet mode.
Command Mode
Stack Configuration mode
User Guidelines
Once this command has been issued, the switch must be rebooted in order for
the command to take effect. Issuing multiple stack-port commands for a
single interface without intervening reboots results in undefined behavior and
is not supported. Reboot the switch and examine the output of the show
switch stack-ports command to determine the active configuration. The clear
config command does not change the stacking port mode. Only the stack-
port command can change the operating mode of the stacking port and it
only takes effect after a reboot.
The stack-port configuration mode does not appear in the running config.
Use the show switch stack-port command to display configuration and status
of stacking ports. Ports that are configured to operate as stacking ports will
show as detached in the show interfaces status command output. When
downgrading switch firmware, Ethernet ports configured as stacking revert to
Ethernet ports. It is necessary to configure the Ethernet ports as stacking on
each unit in the stack individually after a firmware downgrade.
Use the show switch command to display information regarding the switches
in a stack. Fortygigabitethernet ports are only supported on the N4000 series
switches. Redundant stacking links between any two units must operate at
the same speed. A 40G port configured in 4x10G mode is considered to be
operating at 10G speed.
Up to eight stack ports can be configured per stacking unit (four in each
direction).
The N4000 Series switches support up to twelve units configured in a stack
and can utilize 10GBaseT, SFP+ or QSFP (N4000 series only) connections
for stacking. The N3000 and N2000 series switches support up to twelve unit
2CSNXXX_SWUM204.book Page 2254 Monday, January 25, 2016 1:25 PM