Juniper SRX220 User Manual

Table 11: SRX220 Services Gateway PoE Specifications (continued)
ValuesPower Management Schemes
30 W.Per-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
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 12 on page 20 lists the classes and their power ratings as specified by the IEEE
802.3af standard.
Table 12: PoE Classes and Power Ratings on the SRX220 Services
Gateway
Maximum Power Level Output from the PoE PortClass
15.4 W0
4.0 W1
7.0 W2
15.4 W3
30.0 W4
Copyright © 2012, Juniper Networks, Inc.20
SRX220 Services Gateway Hardware

Juniper SRX220 Specifications

General

Product Name	Juniper SRX220
Category	Gateway
Firewall Throughput	750 Mbps
Maximum Concurrent Sessions	64, 000
Memory	1 GB DRAM
Flash Memory	1 GB
Concurrent Sessions	64, 000
Operating System	Junos OS
Weight	2.5 kg
Interfaces	8 x 10/100/1000 Ethernet
Power Supply	AC 100-240V, 50-60Hz
Ports	8 x 10/100/1000 Ethernet
Storage	1 GB