Dell PowerConnect B-FCXs Configuration Manual page 190

5
Managing your IronStack
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Removing a unit from an IronStack
To remove a unit from the stack, disconnect the cables from the stacking ports. This can be done
whether the units are powered-on or powered-off. When you remove a unit that is powered-on, it is
still in stacking enabled mode. To remove the stacking files, enter the stack unconfigure me or
stack unconfigure clean command. When the unit reboots, it will operate as a standalone unit.
Refer to
When a unit is removed from a stack, the Active Controller deletes this unit configuration if it is
dynamically learned. Refer to
dynamic configurations.
Replacing an IronStack unit
Replacing with a clean unit
If the stack unit ID numbering is sequential, you can easily swap a failed unit with an identical clean
unit using this procedure.
1. Remove the old unit from the stack.
2. Make sure that the hardware (module) configuration of the replacement unit is identical to that
3. Connect the new unit to the stack using the same stacking ports used by the old unit.
4. If the configuration of the replacement unit matches the configuration on the Active Controller,
Replacing with multiple clean units
If you are replacing multiple old units with clean units, the Active Controller replaces the unit with
the lowest ID first. You must use secure-setup If the replacement is not a clean unit, the connection
is not sequential, or you do not want the Active Controller to trigger an automatic replacement. Use
the following steps.
1. Remove the old stack unit from the stack
2. Connect the new unit to the existing stack using the same stacking ports used by the old unit.
3. Run secure-setup to select the ID of the old unit for the new unit. The Active Controller resets
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If the Active Controller has configuration information for a new unit, and it matches the base
module (module 1) of the new unit, no action is necessary. If configuration information for
non-base modules on the new unit does not match the information on the Active Controller, the
Active Controller learns the configuration for the new unit module types and merges it with the
information it has for the base module. This merged configuration remains static and will stay
on the Active Controller even if the new unit leaves the stack.
If the Active Controller has configuration information for the new unit, but it does not match the
base module of the new unit, a configuration mismatch can occur where the configuration
related to this unit is removed even after the mismatch is resolved. Refer to
mismatch" on page 156 for more information.
"Unconfiguring an IronStack"
of the failed unit.
the Active Controller resets the new unit, which automatically becomes active in the stack, and
the stack retains its original topology.
the unit, and it joins the stack.
on page 130.
"IronStack terminology" on page 96 for definitions of static and
"Recovering from a
PowerConnect B-Series FCX Configuration Guide
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