Cascade module slot, Cooling fans, Features – Nortel Networks 450 User Manual

Page 37: Cascade module slot -11, Cooling fans -11, Features -11

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BayStack 450 10/100/1000 Series Switches

302401-D Rev 00

1-11

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 1-23

).

You can connect up to eight BayStack 450 switches into a redundant stack
configuration. BayStack 450 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 450 switches and BayStack 410-24T 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
BayStack 450 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.

Features

BayStack 450 switches provide wire-speed switching that allows
high-performance, low-cost connections to full-duplex and half-duplex
10/100/1000 Mb/s Ethernet local area networks (LANs).

BayStack 450 switches offer the following features:

High-speed forwarding rate: up to 3 million packets per second (peak)

Store-and-forward switch: Full-performance forwarding at full line speed,
using a 2.56 Gigabit/second switch fabric

Learning rate: 3 million addresses per second (peak)

kombk.book Page 11 Tuesday, June 29, 1999 3:25 PM

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