Poe Classes And Power Ratings - Juniper SRX240 Hardware Manual

SRX240 Services Gateway Hardware Guide

PoE Classes and Power Ratings

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26
Table 14: SRX240 Services Gateway PoE Specifications (continued)
Power Management Schemes
Supported ports
Total PoE power sourcing capacity
Per port power limit
Power management modes
A powered device is classified on the basis of the maximum power that it draws across
all input voltages and operational modes. When class-based power management mode
is configured on the services gateway, power is allocated taking into account the maximum
power ratings defined for the different classes of devices.
Table 15 on page 26 lists the classes and their power ratings as specified by the IEEE
802.3 AF standard.
Table 15: PoE Classes and Power Ratings
Class
0
1
2
3
4
SRX240 Services Gateway Description on page 3
SRX240 Services Gateway Chassis on page 7
SRX240 Services Gateway Front Panel and Back Panel Views on page 9
SRX240 Services Gateway Built-In Interfaces on page 12
SRX240 Services Gateway LEDs on page 14
Mini-Physical Interface Modules for the SRX240 Services Gateway on page 23
Values
PoE is supported on all 16 Gigabit Ethernet ports (0/0
through 0/15; interfaces ge-0/0/0 through ge-0/0/15)
150 watts
30 watts
NOTE: Default value is 15.4 watts
Static: Power allocated for each interface can be
configured.
Class: Power allocated for interfaces is decided on the
basis of class of powered device connected.
Minimum Power Level Output from PoE Port
15.4 watts
4.0 watts
7.0 watts
15.4 watts
30.0 watts
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