Dell Force10 S55, Руководство пользователя

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26 | Install the S55
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How units are identified within the stack is determined by the selected identification algorithm. The
default algorithm has the units self-identify as Unit 0 through Unit [last] based on the order in which they
come on-line. So, when setting up a new set of switches in a 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. Attaching the unit causes each unit in the stack to
reload, and the subsequent configuration file in each unit includes the awareness of the new unit.
If you have a pre-configured unit that you want 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.
You can use the CLI to make stack identification changes on the fly, such as renumbering units (
switch
renumber
), assigning a new management unit (
movemanagement
command), or removing 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 removing a unit from a stack and other stacking commands, see the Stacking chapter in the
FTOS Configuration Guide and the Stacking Commands chapter in the FTOS Command Reference.