Assigning A Priority To Stacked Switches - Dell Force10 MXL Blade Configuration Manual

Step Task
3 Configure a 40GbE port for stacking mode, where:
stack-unit <unit-number
member stack unit. Valid values: 0 to 5. Default value: 0.
stack-group
on unit. Valid values: 0 to 1
4 Save the stacking configuration on the 40GbE ports.
5 Repeat Steps 1 to 4 on each MXL 10/40GbE Switch in the
stack.
6 Log on to the CLI and reboot each switch, one after
another, in as short a time as possible.
Note: If the stacked switches all 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 5. 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
(Figure 31-8).
To configure stacked switches so that stacking roles are determined by preset priorities, use the
command (refer to

Assigning a Priority to Stacked Switches

To configure the stack so that the roles are assigned according to pre-determined priorities instead of using
the highest MAC addresses, use the
stacked switch. The switch with the highest priority number is elected master. The switch with the next
highest priority number is elected standby and takes over stack management if the master switch fails.
Task
Configure the priority of stacked switches to determine stack
mastership, where
stack-unit unit-number
priority priority-number
Range: 1-14. Default: 0.
To revert the management priority of a stack unit to the default value of 0, use the
unit-number
After you reconfigure the priorities of stacked switches, reload the stack so that a new master and standby
election is performed.
554
| Stacking
> is the unit-number of the
group-number is the number of stacked port
(Figure 31-5).
Assigning a Priority to Stacked
stack-unit priority
identifies the switch in the stack.
specifies the management priority.
number command.
priority
Command Syntax
stack-unit unit-number
stack-group group-number
write memory
reload
show system brief
Switches).
command in Global Configuration mode on each
Command Syntax
stack-unit unit-number priority
number
Command Mode
CONFIGURATION
EXEC PRIVILEGE
EXEC PRIVILEGE
command
stack-unit priority
Command Mode
CONFIGURATION
form of the
no stack-unit