Download - 4-PAIR POWER OVER ETHERNET CALL FOR INTEREST
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
4-Pair Power over Ethernet 3
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
4-Pair Power over Ethernet 4
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
6 4-Pair Power over Ethernet
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
7 4-Pair Power over Ethernet
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
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8
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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
8 4-Pair Power over Ethernet
• 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
9 4-Pair Power over Ethernet
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
4-Pair Power over Ethernet 10
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)
11 4-Pair Power over Ethernet
• 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
12 4-Pair Power over Ethernet
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
)
13 4-Pair Power over Ethernet
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
14 4-Pair Power over Ethernet
Summary • Clear market need to:
• Amend PoE to support 4-pair
• Goal: A new study group that investigates
• 4-pair Power delivery
15 4-Pair Power over Ethernet
4-pair Power Over Ethernet Q & A
_________________________________ 15 Minutes
4-Pair Power over Ethernet 16
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
4-Pair Power over Ethernet 17
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_
4-Pair Power over Ethernet 18