Dell Force10 S60-44T Installing the S60 System - Page 24

Hot-swap Units in a Stack, switch, renumber, movemanagement, no member, switch priority, member

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www.dell.com | support.dell.com Step 4 Task (continued) Turn the power switch on. Figure 3-8. DC power connection Hot-swap Units in a Stack You can add, remove, or swap units in an existing stack. The units in the stack and the new units can be already powered up or they can be powered down. All units in a stack must run the same version of the operating system. If you attempt to attach a unit with a different version of the operating system to an existing stack, the Command Line Interface (CLI) displays an error and the unit is not added until you install compatible 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. This influences the unit numbers, management addresses, and other elements of the configuration file. How units are identified within the stack is determined by the selected identification algorithm. The default algorithm has the units self-identify as Unit 1 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 the configuration does not override the configuration of the stack, in order to avoid stack management conflicts, add the unit while it is powered down. 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), 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. 24 | Install the S60 System

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Install the S60 System
www.dell.com | support.dell.com
Figure 3-8.
DC power connection
Hot-swap Units in a Stack
You can add, remove, or swap units in an existing stack. The units in the stack and the new units can be
already powered up or they can be powered down.
All units in a stack must run the same version of the operating system. If you attempt to attach a unit with
a different version of the operating system to an existing stack, the Command Line Interface (CLI)
displays an error and the unit is not added until you install compatible 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. This influences the unit numbers,
management addresses, and other elements of the configuration file.
How units are identified within the stack is determined by the selected identification algorithm. The
default algorithm has the units self-identify as Unit 1 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 the
configuration does not override the configuration of the stack, in order to avoid stack management
conflicts, add the unit while it is powered down.
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
), 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.
4
Turn the power switch on.
Step
Task
(continued)