Proprietary Pd Detection; Power Interface; Matrix N5 Backplane 48 Vdc Interface; Front Panel 48 Vdc Interface - Enterasys Platinum Distributed Forwarding Engine 7G4205-72 Hardware Installation Manual

Overview

Proprietary PD Detection

The 7G4285‐49 and 7G4205‐72 support a subset of the currently deployed proprietary PoE
methods. This includes support for Cisco PDs, including a proprietary capacitor based
detection scheme.

Power Interface

The 7G4285‐49 and 7G4205‐72 can interface with an external 48V power supply that
resides in a Matrix N5 chassis or from a separate Matrix N‐POE Power System.

Matrix N5 Backplane 48 Vdc Interface

The 7G4285‐49 and 7G4205‐72 have a connector that interfaces with the backplane of the
N5 chassis for 48 Vdc power. This power connection on the DFE modules is fused, has
EMI suppression components for this interface, and can support a sustained output
current of 20 A.

Front Panel 48 Vdc Interface

The 48 Vdc Optional Power Input connector on the 7G4285‐49 front panel provides a
power interface connection for an Enterasys Matrix N‐POE Power System, which
provides the 48 Vdc, 20 Amperes of power and return as well as the power supply status
signals. The status signals indicate the presence and operating state of each Matrix N‐POE
Power System power supplies. This 48 Vdc Optional Power Input interface is not fused as
the N‐PoE Power System has a circuit breaker for each PoE switch module power feed.
C-2 About PoE (Power over Ethernet)
Warning: The DFE module is shipped with a cover over its 48 Vdc Optional Power Input
connector. Do not remove this cover when the DFE module is installed in an N5 chassis.
This cover is removed only when you connect a 48 Vdc power cable from the Enterasys
N-POE Power System.
Advertencia: El modulo DFE es embarcado con una cubierta sobre su conector de poder
opcional de 48 Vdc. No remover esta cubierta cuando el modulo DFE es instalado en un
chassis N5. Esta cubierta debe removerse unicamente cuando se conecta el cable de
poder de 48 Vdc hacia el Sistema de Enterasys de Energia por Cable (Enterasys N-POE
Power System).
Warnhinweis: Im Auslieferungszustand der DFE Module stülpt eine Schutzkappe über
dem 48V Gleichspannungs-Anschluss, die nur dann abgezogen werden darf, wenn ein
Enterasys N-POE Power System angeschlossen wird. Keinesfalls darf diese Schutzkappe
abgezogen werden, wenn das DFE Modul in einem N5 Chassis installiert wird.