24
Installing the S25P
Stacking
You can add units to a stack, remove them, renumber them, or move them in the stack. The units can
continue running in the stack as you add new units, but new units should be powered down during the
connection.
All units in a stack must run the same version of FTOS. If you attempt to attach a unit with a different
FTOS version to an existing stack, the CLI will display an error, and the unit will not be added until you
install identical software.
The order in which the units come on-line or are added to or removed from the stack can affect how the
stack identifies them, and how the units identify themselves, influencing unit numbers, stack management
assignment, and other elements of the configuration file.
How units are identified within the stack is determined by the identification algorithm. The algorithm has
the units self-identify as Unit 1 through Unit [last] based on the order in which they come online. So, when
setting up a new stack, you should have no trouble forcing the identification of the management unit and
unit IDs by methodically supplying power to the units in your preferred sequence.
Similarly, when you add a brand new unit to the stack, the unit will be gracefully added as Unit [last] (the
lowest unused number) with the current configuration.
If you have a pre-configured unit to add to the stack, but you want to make sure that the configuration does
not override the configuration of the stack, it is best to add the unit while it is powered down, in order to
avoid stack management conflicts.
Using SFTOS Stacking Commands
If the switch is running SFTOS, the commands available to manage stacking are described in the Stacking
chapters of the
SFTOS Command Reference
and the
SFTOS Configuration Guide
.
You can execute
clear config
on the switch to start a clean configuration. Then pre-configure it, as
recommended in Best Practices in the Stacking chapter of the
SFTOS Configuration Guide.
You can use the SFTOS CLI to make stack identification changes on the fly:
•
Renumber units:
switch renumber
•
Assign a new management unit:
movemanagement
•
Remove a unit from stack membership:
no member
You can also use commands such as
switch priority
and
member
that override the default unit
identification algorithms.
Use the
show switch
command to see the current assignment of the management unit.
Use the
show switch
unit
command to see the serial number of the designated unit.
For details on and other stacking commands, see the Stacking chapter in the
SFTOS Configuration Guide
and the Stacking Commands chapter in the
SFTOS Command Reference.
Summary of Contents for Force10 S25-01-GE-24P
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