Uplink Modules; Power Over Ethernet Ports; Ex4200 Switch Models - Juniper EX4200 Hardware Manual

Have options of full (all ports) PoE/PoE+ capability or partial (8 ports) PoE capability
Have optional uplink modules that provide connection to distribution switches

Uplink Modules

Optional uplink modules are available for all EX4200 switches. Uplink modules provide two ports for
installing 10-gigabit small form-factor pluggable (XFP) transceivers, four ports for installing 1-gigabit small
form-factor pluggable (SFP) transceivers, two ports for installing 10-gigabit small form-factor pluggable
(SFP+) transceivers. You can use XFP, SFP, or SFP+ ports to connect an access switch to a distribution
switch or to interconnect member switches of a Virtual Chassis across multiple wiring closets.
EX4200 switches also support an SFP+ Media Access Control Security (MACsec) uplink module starting
in Junos OS Release 13.2X50-D10. The SFP+ MACsec module provides four MACsec-capable ports and
can be configured to support up to four 1-gigabit SFP transceivers or up to two 10-gigabit small form-factor
pluggable (SFP+) transceivers.

Power over Ethernet Ports

PoE ports provide electrical current to devices through the network cables so that separate power cords
for devices such as IP phones, wireless access points, and security cameras are unnecessary.
PoE was first defined in the IEEE 802.3af standard. Starting with Junos OS Release 11.1, EX4200 switches
support enhanced PoE, a Juniper Networks extension to the IEEE 302.3af PoE standard that increases the
amount of power per PoE port. A later standard, 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
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.

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.
"EX4200 Switch Models" on page 21.
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