Stacking Units 29
■ The Cascade Extender Unit is hot-insertable. This allows its host
Switch unit to be removed and replaced without disturbing the rest of
the stack.
■ Only 3Com
®
Cascade Cables can be used to connect between
Cascade Modules/Cascade Extender Units.
■ Due to the length of the Cascade Cables, you must insert all of the
Cascade Modules into Expansion Module Slot 1 or all of the Cascade
Modules into Expansion Module Slot 2 on the Switches.
■ It is not possible to stack a Switch 4400, Switch 4400 SE,
Switch 4400 PWR or Switch 4400 FX unit with SuperStack II or other
SuperStack 3 products using the Cascade Stacking Kit (3C17227) or
Cascade Extender Kit (3C17228).
■ 3Com strongly recommends that you upgrade all Switch 4400 units
(24-port and 48-port) in a stack to the latest software agent.
■ 3Com recommends that you initialize a Switch 4400, Switch 4400 SE,
Switch 4400 PWR or Switch 4400 FX unit that has previously been
used elsewhere in your network before you add it to an existing stack.
If you do not initialize the unit, problems may be caused by conflicting
Switch configurations.
■ When the Switch 4400s are stacked together they are assigned a unit
number from bottom-to-top for management purposes. When further
Switches are added to the stack, they can be positioned at the bottom
of the stack or at the top. Either way, the Switch management
software will re-order the Switch unit numbers into a logical order
again (from bottom to top).
DUA1720-3AAA09.book Page 29 Wednesday, July 6, 2005 4:33 PM
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