Juniper EX4200 Series, Руководство по оборудованию, Страница: 27 / 344

IEEE 802.3at, defined PoE+. An IEEE 802.3af powered device operates normally when
connected to an IEEE 802.3at (PoE+) power sourcing equipment.
EX4200 switches with an AC power supply installed have options of full (all 24 or 48
ports) PoE/PoE+ capability or partial (8 ports) PoE capability. EX4200 switches with a
DC power supply installed do not provide PoE. For more information, see
“EX4200 Switch
Models” on page 5 .
Full PoE/PoE+ models are primarily used in IP telephony environments. Partial PoE
models are used in environments where, for example, only a few ports for wireless access
points or security cameras are required.
Related
Documentation
EX4200 Switch Models on page 5
•
•
Field-Replaceable Units in EX4200 Switches on page 10
•
Site Preparation Checklist for EX4200 Switches on page 61
•
Understanding PoE on EX Series Switches
EX4200 Switch Models
The EX4200 switch is available with 24 or 48 ports and with partial or full Power over
Ethernet (PoE) capability. EX4200 switches with a DC power supply installed do not
provide PoE.
NOTE: This topic uses the term PoE to refer to both PoE and PoE+ unless
there is a need to distinguish between the two.
Table 3 on page 5 lists the EX4200 switch models.
Table 3: EX4200 Switch Models
Junos OS
Release
Required
Power Supply
(Minimum)
Fan Tray
Number of
PoE-enabled Ports Number and Type of
Ports
Model
9.0R2 or later 320 W One fan tray with
three fans. First 8 ports 24 Gigabit Ethernet EX4200-24T
9.0R2 or later 190 W One fan tray with
three fans. – 24 Gigabit Ethernet EX4200-24T-DC
9.0R2 or later 600 W One fan tray with
three fans. All 24 ports 24 Gigabit Ethernet EX4200-24P
11.2R1 or later 930 W One fan tray with
three fans. All 24 ports (PoE+) 24 Gigabit Ethernet EX4200-24PX
9.0R2 or later 320 W One fan tray with
three fans. – 24 small form-factor
pluggable (SFP) EX4200-24F
5 Copyright © 2015, Juniper Networks, Inc.
Chapter 1: System Overview