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 “Stack Operation” on page 1-27).

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.

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Nortel Networks 24T manual Rpsu Connector, Cascade Module Slot, Cooling Fans