Rpsu Connector; Cascade Module Slot; Cooling Fans - Nortel BayStack 410 24T Using Manual

Using the BayStack 410-24T 10BASE-T Switch

RPSU Connector

The RPSU connector allows you to connect a backup power supply unit to the
switch. Nortel Networks provides an (optional) high-power redundant power
supply unit (HRPSU) for this purpose. The HRPSU is a hot-swappable power
supply unit that provides uninterrupted operation to up to four BayStack 410-24T
switches in the event that any of the switch power supplies fail.
Nortel Networks provides the HRPSU power rack (Order No. AA0002001) with
four slots for power supply modules (Order No. AA0005003). Each HRPSU can
support up to four BayStack 410-24T switches. Installation instructions are
provided with the HRPSU.
Contact your Nortel Networks sales representative for more information about the
HRPSU.

Cascade Module Slot

The Cascade Module slot allows you to attach an optional BayStack 400-ST1
Cascade Module to the switch (see
You can connect up to eight BayStack 410-24T switches into a redundant stack
configuration. BayStack 410-24T switches use a fail-safe cascade stacking
architecture which, in the unlikely event of a switch failure, maintains the integrity
of the remaining stack: all signals are looped back at the point of failure. Because
each unit in the stack has a full copy of the stack configuration, operation of the
stack continues without affecting application connectivity.
Any mix of up to eight BayStack 410-24T switches and BayStack 450 switches
can be stacked to provide a total of 224 ports (when all MDA slots are configured
with the maximum port availability).
Installation instructions are provided with each BayStack 400-ST1 Cascade
Module (see Installing the BayStack 400-ST1 Cascade Module). See your Nortel
Networks sales representative for ordering information.

Cooling Fans

The variable-speed cooling fans (not shown) are located on one side of the switch
to provide cooling for the internal components. When you install the switch, be
sure to allow enough space on both sides of the switch for adequate air flow.
1-8
"Stack Operation" on page 1-27).
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