| POWER OVER ETHERNET
Annual Showcase 2020 | Intertraffic World 097
depending on various events. In this
way, IEEE 802.3bt provides granular
power levels and minimizes power
waste in the process.
• The standard’s Link Layer Discovery
Protocol (LLDP) allows power to be
adjusted in 0.1-Watt increments for finegrain
power negotiation, further
increasing efficiency.
• IEEE 802.3bt’s Autoclass feature is
designed to enable the PoE
system to measure power
draw (taking into account
all system parameters,
including cable loss
and ageing margin),
adjust power
allocation
and optimize
the system-wide
power budget.
• No electricity is
deployed until both
PSE and PD are
connected via IEEE
802.3bt, making
the system safe and simple to
install and operate.
Together, these features dramatically
improve the capabilities of PoE and its
usefulness in ITS. And, because it’s Ethernet,
the new PoE standard draws on the
technology’s inherent benefits that the
market has already come to expect. IEEE
802.3bt PoE can be relied upon for easy,
plug-and-play deployment, backwards
compatibility, excellent network safety and
simple scalability, to increase power for
future PDs.
“The IEEE 802.3 Ethernet Working Group
continues to deliver on its commitment to
ongoing standard improvements that deliver
real-world operational scenarios and meet
challenges faced by data network operators
worldwide,” said David Law, IEEE 802.3
Ethernet Working Group chair, in an April
23, 2019, IEEE Standards Association
statement announcing the new IEEE
802.3bt and two other
amendments to the base
standard. “These
refinements are essential
to maintain Ethernet as
the core technology
driving advancements
850
million The number of PoE switch
at data centers and
throughout network
infrastructures
everywhere, as well as
utilizing Ethernet to
power the wide variety of
sensors, actuators, cameras
and other devices associated
with IoT,” he added.
ports expect to be
shipped over the next
five years
Timely certification
Leading suppliers in the Ethernet ecosystem
are fiercely committed to upholding such
technology hallmarks. As a global, non-profit
industry consortium of member
organizations dedicated to the continued
success and advancement of Ethernet
technologies, the Ethernet Alliance is
introducing a new Generation 2 (Gen2)
EA Certified PoE program in the wake