Users Guide

You can connect the units while they are powered down or up. Stacking ports are bi-directional.
When a unit is added to a stack, the management unit performs a system check on the new unit to ensure the hardware type is
compatible. A similar check is performed on the Dell Networking OS version.
Syslog messages are generated by the management unit:
• the syslog includes the unit number, previous version, and version being downloaded.
• when the rmware synchronization is complete.
NOTE: You must enter the stack-unit stack-unit stack-group stack-group command when adding units to a stack
to ensure the units are assigned to the correct groups.
NOTE: Any scripts used to streamline the stacking conguration process must be updated to reect the Command Mode change
from EXEC to CONFIGURATION to allow the scripts to work correctly.
Enabling Front End Port Stacking
To enable the front ports on a unit for stacking, use the following commands.
NOTE: You can stack a maximum of two 10G stack ports.
NOTE: After a port is allocated for stacking, you can only use it for stacking. If stack-group 1 is allocated for stacking, you can
use port 49 for stacking but not for Ethernet anymore. If only port 49 is used for stacking, then the ports 50, 51, and 52 are
spare; they can be used for Ethernet.
1 Assign a stack group for each unit.
CONFIGURATION mode
stack-unit id stack-group id
Begin with the rst port on the management unit. Next, congure both ports on each subsequent unit. Finally, return to the
management unit and congure the last port.
The range is from 0 to 3.
2 Save the stacking conguration on the ports.
EXEC Privilege mode
write memory
3 Reload the switch.
EXEC Privilege mode
reload
Dell Networking OS automatically assigns a number to the new unit and adds it as member switch in the stack.
The new unit synchronizes its running and startup congurations with the stack.
4 After the units are reloaded, the system reboots. The units come up in a stack after the reboot completes.
To view the port assignments, use the show system stack-unit command.
Creating a New Stack
Prior to creating a stack, know which unit will be the management unit and which will be the standby unit.
Enable the front ports of the units for stacking. For more information, refer to Enabling Front End Port Stacking.
Stacking
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