Poe Classes And Power Ratings - Juniper SRX210 - HARDWARE GUIDE REV 3 Hardware Manual

SRX210 Services Gateway Hardware Guide

PoE Classes and Power Ratings

36
Table 17: SRX210 Services Gateway PoE Specifications (continued)
Power Management Schemes
Supported ports
Total PoE power sourcing capacity
Per-port power limit
Power management modes
The IEEE 802.3 AF (PoE) functionality is supported on SRX210 Services Gateway PoE
models that have power supply of 48V. The IEEE802.3 AT (PoE+) functionality is
supported on SRX210 Services Gateway PoE models that have power supply of 54V. For
more information, see "Adjusting the Power Supply Adapter Tray for the SRX210 Services
Gateway for Rack-Mount Installation" on page 70.
NOTE:
The PoE+ functionality is available from Junos OS Release 10.2 or later.
The PoE+ functionality is available only if your gateway is using 54V power
supply. You can order the 54V power supply from Juniper Networks. Contact
your Juniper Networks customer service representative for more information.
A powered device is classified based on the maximum power that it draws across all
input voltages and operational modes. When the class-based power management mode
is configured on the services gateway, power is allocated by taking into account the
maximum power ratings defined for the different classes of devices.
Table 18 on page 37 lists the classes and their power ratings as specified by the IEEE
802.3 AF standard.
Values
The following ports support PoE:
ge-0/0/0
ge-0/0/1
fe-0/0/2
fe-0/0/3
50 watts
30 watts
Static: power allocated for each interface
can be configured
Class: power allocated for interfaces is
decided based on the class of powered
device connected
Copyright © 2010, Juniper Networks, Inc.