Reference Guide

7. Enable a group of four 10 GbE or a single 40 GbE port in stacking mode.
CONFIGURATION mode
stack-unit unit-number stack-group group-number
• stack-unit unit-number is the stack-unit number.
• stack-group group-number is group of four 10 GbE ports or one 40 GbE port. The valid
values are from 0 to 15.
8. Save the stacking configuration to the startup configuration.
EXEC Privilege mode
write memory
9. Repeat Steps 7 and 8 on each stack unit to configure the stack ports on the master, standby, and
member units.
10. Reboot each switch, one after another, in as short a time as possible.
EXEC Privilege mode
reload
Examples of Configuring and Viewing Two S5000 Switches in a Stack
Dell Networking OS Behavior: After you configure the 10 GbE ports in a stack group for stacking, you
cannot use the ports for Ethernet data transmission. For example, if you enable stack group 0 for stacking
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
916
Stacking