4-pair power over ethernet call for … power over ethernet call for interest ieee 802.3 working...

4-PAIR POWER OVER ETHERNET CALL FOR INTEREST

IEEE 802.3 Working Group

CFI Panel Members

Presenters: •  Chad Jones – Cisco Systems Inc., •  David Tremblay – Hewlett Packard •  Koussalya Balasubramanian – Cisco Systems Inc., •  Francois Crepin – Akros Silicon •  Martin McNarney – Broadcom

Experts for Q & A Session: •  Dave Dwelley – Linear Technology •  Yair Darshan - Microsemi

4-Pair Power over Ethernet 2

Supporters – Page 1 (76 Individuals from 55 Companies)

Jim Theodoras – ADVA Phillip Brownlee – Coilcraft Francois Crepin – Akros Silicon Mabud Choudry – Commscope Rick Rabinovich – Alcatel-Lucent Wayne Larson – Commscope Andrew Jimenez – Anixter Richard Mei – Commscope Daniel Dove – APM Masood Shariff – Commscope Mikael Arnfelt – Axis Communication George Zimmerman – CME Consulting/ Paul Kish – Belden Commscope Inc Joe Berry – Belfuse Dave Hess – Cord Data John Hess – Belfuse Brad Booth – Dell Yakov Belopolsky – Bel Stewart Connector John D’Ambrosia – Dell Eric Lawrence – Berk-Tek Theodore Brillhart – Fluke Networks Duncan Macey – British Telecom Steve Carlson – High Speed Design, Inc. Kevin Brown – Broadcom David Tremblay – Hewlett-Packard Wael Diab – Broadcom Stephan Romano – HillRom Martin Mcnarney – Broadcom Guyingjie – Huawei Scott Kipp – Brocade Hesham ElBakoury – Huawei Koussalya Huarui Klinsmann – Huawei Balasubramanian – Cisco Shadi AbuGhazaleh – Hubbell Inc., Bill Delveaux – Cisco David Chalupsky – Intel Chad Jones – Cisco Thananya Baldwin – Ixia


Supporter – Page 2 Jerry Pepper – Ixia Xiaofeng Wang – Qualcomm Raul Lozano – Aruba Networks James Zhang – Qualcomm Alan Flatman – LAN Technologies Joseph Chou – Realtek Mike Bennett – LBNL Bob Lounsbury – Rockwell Automation Dave Dwelley – Linear Technology JungHyun Choi – Samsung Jeff Heath – Linear Technology Jimmy Jun-Pyo Kim – Samsung Gavin Parnaby – Marvell Fred Schindler – Seen Simply Chris Diminico – MC Communications Valerie Maguire – Siemon Daniel Feldman – Microsemi David Lucia – Sifos Pavlick Rimboim – Microsemi John N Wilson – Silicon Labs Yair Darshan – Microsemi Christian Beia – ST Micro Je-Hyuk Won – Moa Telecom Flemming Christensen– Sundance Scott Sommers – Molex Multiprocessor Tech Ltd Martin Rossbach – Nexans Cabling Bernie Hammond – TE Connectivity Paul Vanderlaan – Nexans Canada Inc David Abramson – Texas Instruments Sterling Vaden – Optical Cable Corporation Michael McCormack– Unemployed Ron Nordin – Panduit Dave Estes – UNH John Senese – Panduit Mandeep Chaddha – Vitesse Semiconductor Rachel M Bugaris – Panduit Marek Hajdeczunia – ZTE Corporation


Objective • Gauge the interest in forming a study group to develop

•  4-pair Power Over Ethernet

•  This presentation will NOT •  Fully explore the problem •  Debate strength and weakness of solutions •  Choose a solution •  Create a PAR or 5 Criteria •  Create a standard or specification

5 4-Pair Power over Ethernet

Agenda

• Definitions • Background • Efficiency, High power and 10GBASE-T support • Why now and Why in IEEE 802.3? • Summary • Q & A • Straw Polls


Definitions •  IEEE Std 802.3-2012

Clause 33 power injection •  Requires 2 pairs •  Power is injected on either pairs 1-2,3-6 or

pairs 4-5,7-8. (i.e. Alternative A or Alternative B configuration)

•  IEEE 802.3 Clause 33 Standard allows Alternative-A or Alternative-B, but not both


VPSE LOADPSE PD

PHY

PHY

PHY

PHY

VPSE LOADPSE PD

PHY

PHY

PHY

PHY

VPSE LOADPSE PD

PHY

PHY

PHY

PHY

1

2

3

6

4

5

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8

1

2

3

6

Fig.2 4-pair Power Injection

Fig.1 Clause 33 Power Injection

or 8

or

or

or

7

5

4

•  4-pair Power Injection Power injected on both 1-2,3-6 and 4-5,7-8 pairs. (i.e. All pairs are powered up)

Background

•  4-Pair PoE

o For same load current, 4-pair is more efficient than 2-pair delivery

o Markets can also utilize increased power that is possible with 4-pair o Today PoE supports 10BASE-T,100BASE-TX,1000BASE-T. Study

feasibility of PoE support for 10GBASE-T.

o Maintain backward compatibility with IEEE Std 802.3-2012 Clause 33


•  As per IEEE Std 802.3-2012 Clause 33, Cable loss_2-pair = I2 * R (R is channel resistance)

•  For the same channel current,

Cable loss_4Pair =(I/2)2 * R + (I/2)2 * R = 2* (I/2)2 * R = ½ * (I2) * R

-  Power loss is reduced by half

•  The actual efficiency advantage will be load dependent •  The simplified (pessimistic) calculation shows, 4-pair PoE

effectively reduces the channel power loss by at least half compared to 2-pair PoE


4-pair Vs 2-pair Efficiency

Cable loss_4Pair = Cable loss_2pair / 2

I

I/2

I/2

Efficiency – Example Use Case

With a conservative assumption of 100million PDs deployed world wide, the average cable power loss numbers are, (average case from table above)

- Cable Power loss over all PDs/year on a 2-pair system 121.7 Million kWh -  Cable Power loss over all PDs/year on 4-pair system 60.8 Million kWh


Parameter Average Case Worst Case Voltage (at PSE) 48.834 V 50 V

Voltage (at PD) 48 V 42.5 V

PD Power 8 Watts 25.5 Watts

Link Resistance 0.125 Ohms/meter

Link length 40 meters 100 meters

Hours in a Year 8760 Hours

Cable Power Loss Per PD

2-PAIR 4-PAIR 2-PAIR 4-PAIR

0.14 W 0.07 W 4.5 W 2.25 W

Loss Percentage Per PD 1.71% 0.854% 15% 7.5%

Cable Power Loss per PD per Year

1217 Watt-Hours 608 Watt-Hours 39420 Watt-Hours 19710 Watt-Hours

Potential Energy Savings from 4-pair system à (at least) 60.8 Million kiloWatt-hours/yr

Using the simplified math model from previous slide,

© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 5 of 7

Reason 5: Reduce Total Cost of Ownership (TCO) with network power

Traditional physical access control systems require bringing power, both primary and backup, to each door reader and lock. With UPOE this can be replaced by using IP gateway readers, door locks, and readers that are all connected and powered over a standard Cat5e/Cat 6 cable. This can reduce installation costs by up to several hundred dollars per door.

A single unified physical infrastructure and managed cabling system can also increase availability, negating the requirement to provide both primary and backup power to these end devices. The backup power can be consolidated (commercially available uninterruptible power supplies) and moved into the wiring closet or data center to power the UPOE capable switches. This consolidated backup power supply eliminates the need to install batteries by each door.

Cisco UPOE Redefining Physical Access Control Solution New buildings as well as upgrades for traditional access control solutions can use the Cisco Catalyst 4500 Series Switches delivering Cisco UPOE to power the Cisco Physical Access Gateway devices, badge readers, and physical door strikes that are responsible for locking/unlocking the doors. The Cisco Catalyst 4500 has a bulletproof architecture in terms of data/power resiliency and high availability. In addition to the power resiliency offered by UPOE, the platform offers full system-level redundancy and software enhancements such as Nonstop Forwarding (NSF) with Stateful Switchover (SSO) to make sure that a single hardware-level failure does not cause downtime to the network. Furthermore, the platform also supports a true In-Service Software Upgrade (ISSU) feature to enable change management without incurring any network downtime.

The overall Cisco Physical Access Control solution has four components: the Cisco Physical Access Gateway, Cisco UPOE splitter, Cisco Catalyst 4500E switch, and Cisco Physical Access Manager.

Figure 2 shows the physical access control architecture in detail. The Cisco Physical Access Gateway and the Cisco UPOE splitter mount above the doors or are placed in IT closets near the door. A standard copper Ethernet cable connects and powers the Cisco Physical Access Gateway and the Cisco UPOE splitter. The gateway can power the downstream badge reader. Similarly, the 12V DC auxiliary output powers the door strike. A standard Cat5e/6 copper Ethernet cable is yet again used to the UPOE splitter with the Cisco Catalyst 4500E switch, which connects to the Cisco Physical Access Manager over a standard IP network.

Figure 2. Cisco UPOE Solution with Cisco Physical Access Control Products

4-Pair High Power Target Markets

Markets Typical Power Consumption

Nurse Call Systems - HealthCare 80% market needs >30W (Typically 50W)

Point Of Sale –Retail (POS – credit card readers and printers)

40-50% in 30-60W range

IP Turrets – Banking, financial trade floor phone systems Typically 45W

Building Management (Lighting Fixtures & Controllers, Access Controllers, etc.)

40-50W

Thin Clients, Virtual Desktop Infrastructure(VDI) terminals (High-end configuration)

~50W

Video Conferencing, Hospitality (e.g.,: PoE powered switches) Typically 45-60W

IP Security Cameras (Pan, Tilt, Zoom cameras) 30-60W range

Industrial (Brushless and Stepper drives, Motor control units)

>30W

Healthcare (Nurse Call Systems)


•  IEEE Std 802.3-2012 Clause 33, Max PD Power à 25.5Watts. •  Some markets are in need of >25.5W of power. 4-pair PoE can provide >25.5W of power

Por

ts (i

n M

illio

ns)

Sources: VDC Research IMS Research - Jenalea Howell h"p://seekingalpha.com/ar3cle/101408-‐the-‐global-‐ligh3ng-‐market-‐by-‐the-‐numbers-‐courtesy-‐of-‐philips and other research reports Gartner Forecasts, BT Turret, Cisco Partners


4-Pair High Power Market Potential

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

2013 2014 2015 2016 2017 2018

Industrial Automation

Point of Sale - Retail

Hospitality

IP Security Cameras

IP Turrets

Nurse Call Systems

Thin Clients/VDI

Building Management

High power Greater than IEEE 802.3 Clause 33 defined

PoE support for 10GBASE-T •  Next generation Wireless Access Point bandwidth is going up •  PoE APs are very common today •  We need to investigate into PoE support for 10GBASE-T. •  10GBASE-T is a 4-pair Ethernet Standard. •  4-pair will also efficiently power up APs. •  For example, forecast projection for IEEE P802.11ac APs is shown

below

Source: DellOro AP

s(in

Mill

ions

)


0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

2013 2014 2015 2016 2017

IEEE P802.11ac APs

802.11ac AP's

Why now and Why in 802.3? •  4-pair PoE provides better efficiency over 2-pair and can deliver higher

power. Opens up PoE to newer markets.

•  There is market demand for 4-pair PoE.

•  Several proprietary solutions exists in market – need for standardization is imminent.

•  It’s Power over Ethernet It belongs in 802.3 •  IEEE 802.3 is recognized as the international standard for Power over

Ethernet Solutions •  PoE experts are in 802.3


Summary • Clear market need to:

•  Amend PoE to support 4-pair

• Goal: A new study group that investigates

•  4-pair Power delivery


4-pair Power Over Ethernet Q & A

_________________________________ 15 Minutes


Straw Polls •  _57_ Number of People in the room

•  _42_ Individuals who would attend and contribute to a 4-pair Power over Ethernet Study Group

•  _33_ Companies that support the formation of a

4-pair Power Over Ethernet Study Group


Straw Polls • Request that IEEE 802.3 WG form a study group to

develop a PAR and 5 Criteria for a : 4-pair Power Over Ethernet

People in the room 802.3 Voters only Y: _50_ Y:_42_ N: _0_ N:_0_ A: _3_ A:_3_


Thank You!


4-pair power over ethernet call for … power over ethernet call for interest ieee 802.3 working...

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