Nortel Networks 24T Bedienungsanleitung PDF herunterladen (Seite 57)

Introduction to the BayStack 410-24T Switch

309985-B Rev 00

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Base Unit

The base unit is the unique stack unit that is configured by the Unit Select switch

on the front panel of the 400-ST1 cascade module. One unit in the stack must be

configured as the base unit; all other units in the stack must have their Unit Select

switch set to Off (see “

Unit Select Switch” on page 1-28). Any single unit in the

stack can be assigned as the base unit.

The physical ordering of all of the other units in the stack is determined by the

position of the base unit within the stack. This is important for management

applications that view the physical ordering of the units within the stack.

Some characteristics of the base unit are described in the following sections.

Initial Installation

During the initial installation of the stack, the software automatically determines

the physical order of all units in the stack according to the position of the base unit

within the stack. Thereafter, the individual units maintain their original unit

numbering, even if the position of one or more units in the stack is changed (you

can renumber the units using the Renumber Stack Units screen; see “Renumber

Stack Units” on page 3-89).

For example, when the stack is initially powered up, the base unit becomes unit 1

and the unit that the base unit connects to (via the Cascade A Out cable) becomes

unit 2 (and the next unit is unit 3 and so on), until the maximum stack

configuration (up to 8 units) is reached. If the base unit is changed to another unit

in the stack, the new base unit keeps its original unit number in the stack.

Note:

For stacking three or more units (maximum 8 units per stack), order the

optional 1 meter (3.28 ft.) cascade return cable (Order No. AL2018001).

Note:

Although any single unit in the stack can be assigned as the base unit,

when mixing BayStack models in a single stack, Nortel Networks

recommends that you assign the unit with the highest bandwidth as the base

unit. The additional workload of the base unit is optimized by using the higher

bandwidth model switch.

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Nortel Networks 24T Bedienungsanleitung Seite 57