Nortel Networks 10BASE-T Manual Do Utilizador
Introduction to the BayStack 410-24T Switch
309985-C Rev 00
1-31
Base Unit
The base unit is the unique stack unit that you configure with the Unit Select
switch on the front panel of the 400-ST1 Cascade Module (see
switch on the front panel of the 400-ST1 Cascade Module (see
” on
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.
stack must have their Unit Select switch set to Off.
Normally, any single unit in a stack configuration can be assigned as the base unit,
with the following restriction: In a mixed stack configuration that contains one or
more Business Policy Switch units, a Business Policy Switch must be configured
as the base unit.
with the following restriction: In a mixed stack configuration that contains one or
more Business Policy Switch units, a Business Policy Switch must be configured
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.
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:
•
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 you change the position of one or more units
in the stack.
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 you change the position of one or more units
in the stack.
For example, when you initially power up the stack, 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 you change the base unit to
another unit in the stack, the new base unit keeps its original unit number in
the stack.
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 you change the base unit to
another unit in the stack, the new base unit keeps its original unit number in
the stack.
Note:
If you do not designate a Business Policy Switch as the base unit of a
mixed stack configuration, the stack configuration will not operate.
Note:
You can renumber the units using the Renumber Stack Units screen; see
” on
.