Users Guide

• If the new unit is running an Dell Networking OS version prior to, the unit is put into a card problem
state, Dell Networking OS is not upgraded, and a syslog message is raised. The unit must be upgraded to
Dell Networking OS version before you can proceed.
Syslog messages are generated by the management unit:
• before the management unit downloads its Dell Networking OS version or later to the new unit. The
syslog includes the unit number, previous version, and version being downloaded.
• when the firmware synchronization is complete.
• if the system check fails, a message such as a hardware incompatibility message or incompatible uboot
version is generated. If the unit is placed in a card problem state, the management unit also generates
an SNMP trap.
• if the software version of the new unit predates Dell Networking OS version , the management unit puts
the new unit into a card problem state and generates a syslog that identifies the unit, its Dell Networking
OS version, and its incompatibility for firmware synchronization.
NOTE: Any scripts used to streamline the stacking configuration process must be updated to reflect 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.
1 Assign a stack group for each unit.
CONFIGURATION mode
stack-unit id stack-group id
Begin with the first port on the management unit. Next, configure both ports on each subsequent unit.
Finally, return to the management unit and configure the last port.
The range is from 0 to 31.
2 Save the stacking configuration 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 configurations 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.
Stacking 949