Redundant Power Supply; Dc-Dc Converter Module; Stacking Capabilities; Overview — System Configuration Nn47205-500 02.01 Standard 5.0 23 February - Nortel 4500 Series Overview-System Configuration

120 About the Nortel Ethernet Routing Switch 4500 Series

Redundant power supply

The Nortel Ethernet Routing Switch 4500 Series Power over Ethernet
(PoE) switches, ERS 4548GT-PWR, and ERS 4550T-PWR, can use an
optional 470-Watt (W) Nortel Ethernet Routing Switch RPS 15 redundant
power supply. The RPS 15 power supply chassis is two units high and
can accommodate up to three RPS modules, each supporting up to four
devices, to provide redundant power and uninterrupted operation in the
event of power failure. One RPS module connected to a PoE switch can
provide up to 15.4 W for each port on all 48 ports. The RPS modules fit into
the rear of the RPS 15 chassis. The UPS and associated battery pack
module fit into the front of the chassis.
The non-PoE switches, ERS 4548GT, 4550T, and 4526FX, can use an
optional 150W Nortel Ethernet Switch Power Supply Unit 10 and require
the DC-DC Converter Module. The Nortel Ethernet Switch Power Supply
Unit 10 provides scalable power redundancy and protection to low-wattage
networking equipment. The PSU modules slide into the front of the Nortel
Ethernet Routing Switch RPS 15 chassis.

DC-DC Converter Module

The DC-DC Converter Module for the non-PoE switches operates with the
optional Nortel Ethernet Switch Power Supply Unit 10. The PoE switches do
not require a DC-DC Converter Module.
The 100 W DC-DC Converter Module provides a Plug and Play redundant
power supply unit for the Ethernet Routing Switch Series 4500 non-PoE
switches. Contact your Nortel sales representative to order the converter
module.
For further information about the DC-DC converter module, see DC-DC
Converter Module for the BayStack 5000 Series Switch (215081-A).

Stacking capabilities

You can use the Nortel Ethernet Routing Switch 4500 Series switches in
either of the following configurations:
•
•
The Nortel Ethernet Routing Switch 4500 Series switches have a built-in
cascade port to stack up to eight units. The cascade port provides an
40-Gigabit (Gb) cascading mechanism for the stacks.
A stack can consist of any combination of Nortel Ethernet Routing Switch
4500 Series switches.
Copyright © 2007, Nortel Networks
.
stand-alone
stack
Note: All units in the stack must use the same software version.
Nortel Ethernet Routing Switch 4500 Series
Overview — System Configuration
NN47205-500 02.01 Standard
5.0 23 February 2007
Nortel Networks Confidential