Reference Guide

and only connect ports 0 and 1 to a peer switch, ports 2 and 3 must remain unused for Ethernet data
links.
If you do not assign a priority and renumber each stack unit and the stacked switches reboot at
approximately the same time, the switch with the highest MAC address is automatically elected as the
master switch. The switch with the next highest MAC address is elected as standby. As each switch joins
the stack, it is assigned the lowest available stack-unit number from 0 to 11. The default configuration of
each stacked switch is stored in the running configuration of the stack. The stack-unit ID numbers are
retained after future stack reloads.
To verify the stack-unit number assigned to each switch in the stack, use the show system brief
command.
To display complete information on an stack, use the show system command.
The following examples show how to configure two new S5000 switches for stacking using 10 GbE
ports. The second example shows how to verify the stack configuration.
S5000-1(conf)#stack-unit 2 stack-group 1
Dell(conf)#Feb 8 17:11:04: %STKUNIT2-M:CP %IFMGR-6-STACK_PORTS_ADDED: Ports Te
2/4 Te 2/5
Te 2/6 Te 2/7 have been configured as stacking ports. Please save and reload
for config to
take effect
S5000-1(conf)#stack-unit 2 stack-group 2
Dell(conf)#Feb 8 17:11:10: %STKUNIT2-M:CP %IFMGR-6-STACK_PORTS_ADDED: Ports Te
2/8 Te 2/9
Te 2/10 Te 2/11 have been configured as stacking ports. Please save and reload
for config to
take effect
S5000-1(conf)#end
S5000-1#Feb 8 17:11:12: %STKUNIT2-M:CP %SYS-5-CONFIG_I: Configured from console
reload
System configuration has been modified. Save? [yes/no]: yes
!
Feb 8 17:11:14: %STKUNIT2-M:CP %FILEMGR-5-FILESAVED: Copied running-config to
startup-config
in flash by default
Proceed with reload [confirm yes/no]: yes
Feb 8 17:11:17: %STKUNIT2-M:CP %CHMGR-5-RELOAD: User request to reload the
chassis
S5000-2(conf)#stack-unit 1 stack-group 2
S5000-2(conf)#Feb 8 17:10:00: %STKUNIT1-M:CP %IFMGR-6-STACK_PORTS_ADDED: Ports
Te 1/8 Te 1/9
Te 1/10 Te 1/11 have been configured as stacking ports. Please save and reload
for config to
take effect
S5000-2(conf)#stack-unit 1 stack-group 3
S5000-2(conf)#Feb 8 17:10:04: %STKUNIT1-M:CP %IFMGR-6-STACK_PORTS_ADDED: Ports
Te 1/12 Te 1/13
Te 1/14 Te 1/15 have been configured as stacking ports. Please save and reload
for config to
take effect
S5000-2(conf)#end
S5000-2#Feb 8 17:10:07: %STKUNIT1-M:CP %SYS-5-CONFIG_I: Configured from console
896
Stacking