Table 17: SRX210 Services Gateway PoE Specifications (continued)
ValuesPower Management Schemes
The following ports support PoE:
•
ge-0/0/0
•
ge-0/0/1
•
fe-0/0/2
•
fe-0/0/3
Supported ports
50 wattsTotal PoE power sourcing capacity
30 wattsPer-port power limit
•
Static: power allocated for each interface
can be configured
•
Class: power allocated for interfaces is
decided based on the class of powered
device connected
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. Youcan order the 54Vpower supply from Juniper Networks. Contact
yourJuniper Networkscustomer service representativefor more information.
PoE Classes and Power Ratings
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.
Copyright © 2010, Juniper Networks, Inc.36
SRX210 Services Gateway Hardware Guide
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