ETHERNET 104: INTRODUCTION TO 2.5G/5G BASE …... © 2015 Ethernet Alliance ETHERNET 104:...
Transcript of ETHERNET 104: INTRODUCTION TO 2.5G/5G BASE …... © 2015 Ethernet Alliance ETHERNET 104:...
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ETHERNET 104: INTRODUCTION TO 2.5G/5G BASE-T ETHERNET
Peter Jones, Cisco
John D’Ambrosia, Dell
Dave Chalupsky, Intel
May 21, 2015
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Disclaimers
• Opinions expressed during this presentation are the
views of the presenters, and should not be considered
the views or positions of the Ethernet Alliance.
• Per IEEE-SA Standards Board Bylaws, Dec 2013
• “At lectures, symposia, seminars, or educational
courses, an individual presenting information on
IEEE standards shall make it clear that his or her
views should be considered the personal views of
that individual rather than the formal position of
IEEE.”
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THE ETHERNET ALLIANCE
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products based on, or dependent upon, both existing and emerging IEEE 802 Ethernet
standards and their management.
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Physical Layer
Ethernet 101:Introduction to Ethernet
Ethernet 102:The Physical
Layer Of Ethernet
Ethernet 301:40/100GbE Fiber
Cabling and Migration Practices
Ethernet 202:10GBASE-TRevamped
Protocols
Ethernet 211:Data CenterConvergence
Ethernet 311:Multi-tenancy
Ethernet Topics
Ethernet 151:Ethernet
Alliance Plugfests
Ethernet 203:40G & 100G
Ethernet
Ethernet 103:Introduction to 25
Gb/s Ethernet
All Webinars archived at: http://www.ethernetalliance.org/library/university-of-ethernet-webinar-series/
UNIVERSITY OF ETHERNET WEBINAR SERIES
5
Ethernet 104:Introduction to 2.5G/5G
BASE-T Ethernet
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Today’s Speakers
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John D’AmbrosiaChief Ethernet EvangelistCTO Office, NetworkingDell
Dave ChalupskyNetwork Hardware Architect, IntelChair, IEEE P802.3bz 2.5G/5GBASE-T Task Force (i.e. NGEA BASE-T)
Peter JonesPrincipal EngineerCisco Systems
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Agenda
• Introduction
• Market Drivers
• Technology Overview
• Standards Activities
• In Closing
• Q&A
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The following Ethernet Alliance member companies wish to express support for the IEEE 802.3 Ethernet Working
Group to develop a single standard to support multi-vendor interoperability for 2.5G/5G BASE-T Ethernet.
High Speed Design
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BASE-T Deployment
• Major Applications of BASE-T Endpoints • Desktop computers, servers,
• IP Phones, Wireless Access Points
• Consumer electronics
• >4 Billion 100BASE-T & 1000BASE-T switch ports shipped in last 20 years.
– Similar # for end points– BASE-T port total is approaching 1B/year
• BASE-T success attributes – Ease Of use and backward compatibility– Structured cabling– Incremental speed upgrades– Multi-vendor interoperability– Supports Power Over Ethernet
• Single-cable delivery of power and data to end devices
– Optimal cost / performance
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The Application Spaces of BASE-T
DATA CENTER
5m
3
0m
1
00
m
10
00
BA
SE-T
10
GB
ASE
-T
2.5
/5G
BA
SE-T
25
GB
ASE
-T
40
GB
ASE
-T
ENTERPRISE FLOOROffice space, for example
Floor or Room-based
Row-based (MoR/EoR)
Rack-based (ToR)
Data Rate
Reach
Source: George Zimmerman, CME Consulting
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© 2015 Ethernet Alliance
Why 2.5G / 5G BASE-T?
• From 2003 to 2014 ~70 billion meters of Cat 5e and Cat 6 cabling have been sold….– ~90% of installed base
• Existing specifications support 1Gb/s over this cable, but faster data rates are possible.
• Customers demanding more value from this infrastructure.
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Enterprise Network Structure Today
• Typically built using
this three tier design
• It’s proven stable
and durable
• Copper BASE-T links between Access
switches and APs
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AP AP AP
Core
Distribution
Access
APs and
End Devices
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802.3 Ethernet and 802.11 Wireless LAN
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Access Switch
Mostly 1000BASE‐T
PoE PSE (15W, 30W,
802.3bt/4PPoE)
Cabling
Cat 5e/6/6A up to 100M
New installs using Cat 6A
for 10+yr life
Access Point
Connects 802.11 to 802.3
PoE powered
Footprint sensitive (e.g. power,
heat, etc.)
802.11ac Wave 2 drives wired
traffic > 1 Gb/s.
LinkAgg (Nx1000BASE-T) or
10GBASE-T only options today
1000BASE-TPower over Ethernet
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Enterprise Access Links Today
World wide BASE-T cabling is dominated
by Cat 5e & Cat 6.Based on cable sales data, average drop
lengths and replacement rates
Source: BSRIA December 14
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Enterprise Access port types are
dominated by 1000BASE-T
1999 2004 2009 2014 2019
Eth
ern
et
Swit
ch P
ort
s
Ethernet Switch Ports by SpeedDell’Oro Group Ethernet Switch 5-year Forecast Jan 2015
40 Gbps
25 Gbps
10 Gbps
1000 Mbps
100 Mbps
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38%
53%
8%
1%
Cat 5e
Cat 6
Cat 6a
Cat 7
Source: http://www.ieee802.org/3/NGEBASET/public/jan15/jones_ngeabt_04c_0115.pdf
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Installed Base Over Time
Source: BSRIA December 14
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0
200
400
600
800
1000
1200
1400
1600
1800
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Cat 5e outlets Cat 6 outlets Cat 6a outlets Cat 7 outlets
Cat 5e Outlets 539 MCat 6 Outlets 743 MCat 6a Outlets 111 MCat 7 Outlets 10 M
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Enterprise AP Radio Bandwidth
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802.11 is clearly outgrowing 1000BASE-T
APs upgraded faster than switches, switches faster than cabling
802.11ax (High Efficiency WLAN) is coming, targets 4x throughput per station.
10
100
1000
10000
2002+ 2007+ 2013+ 2015+
AP
Rad
io r
ate
(Mb
/s)
Low
Mid
High
Max
Period 802.11
Standard
1997-1998 11
1999-2001 11b
2002-2006 11a/g
2007-2011 11n
2013-2015 11ac Wave1
2015-2017 11ac Wave2
Max
(Mb/s)
2
11
54
600
3470
6930
Graph data: Cisco 802.11ac White Paper (link)
AP to switch bandwidth should be ~75% of radio bandwidth
(to avoid Ethernet link as system bottleneck)
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802.11 Enterprise AP Segments and Trends
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2012 2013 2014 2015 2016 2017
Mid-Range APs(Dual band
2.4 & 5 GHz)
2x2 11n600Mb/s
2x2 11ac1.9 Gb/sTo 11ac – Wave 1
3x3 11ac2.4 Gb/sTo 11ac – Wave 2
Low End APs(Single Dual
band))
2x2 11n300Mb/s
2x2 11ac1.9 Gb/sTo 11ac – Wave 1 (To dual band) To 11ac –
Wave 2
2x2 11ac1.9Gb/s
High End APs(Dual band
2.4 & 5 GHz)3x3 11n
900Mb/s3x3 11ac
1.75Gb/sTo 11ac – Wave 1
4x4 11ac3.9 Gb/s
11ac – Wave 2 8x8 11ac7+ Gb/s
Multi-band, 8x8, etc
Ethernet BW Required
(~75% of max)700 Mb/s 1.3 Gb/s 1.4 Gb/s 2.9 Gb/s 5.3 Gb/s
Ethernet speedfor High End
1 Gb/s 2.5 Gb/s 5 Gb/s 10 Gb/s
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What’s happening with 802.11?
Rapid transition from 11n to 11ac
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Wave 2 starts ramping in 2016
2012 2019
Acc
ess
Po
ints
Enterprise AP Volume SplitSource: Dell’Oro Group Wireless LAN 5-year Forecast Jan 2015
802.11ac
802.11n
2013 2019
Acc
ess
Po
ints
Enterprise 802.11AC AP TransitionSource: Dell’Oro Group Wireless LAN 5-year Forecast Jan 2015
Wave 1
Wave 2
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What does this mean for Ethernet?
In 2015 more users connecting via
WiFi than Ethernet
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2.5G/5G BASE-T Ethernet is expected to be rapidly adopted
2014 2019
Po
rts
Enterprise Edge: 2.5G/5G Ethernet transition
Source: Dell’Oro Group Enterprise Edge 5-year Forecast Jan 2015
5.0 Gbps
2.5 Gbps
Other
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1999 2014 2019
Act
ive
Co
nn
ect
ion
s
Enterprise Edge: Ethernet and 802.11 connections
Source: Dell’Oro Group Enterprise Edge 5-year Forecast Jan 2015
Ethernet
802.11
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Between 1G and 10G, There’s Lots of Room for BASE-T PHYs
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6.25
10G BASE-T
Cat
6A
Sp
ec
5G BASE-T2.5G BASE-T
Nyquist Frequency (MHz) for Ethernet Data Rates
Enco
din
g: b
its/
sec/
Hz
(pe
r p
air)
1000 BASE-T
4
Cat
5e
Spec
Cat
6 S
pec
100
(25
0 M
Hz)
40020062.5
(10
0 M
Hz)
(50
0 M
Hz)
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Leveraging 10GBASE-T Investment1000BASE-T and 10GBASE-T already share many common attributes • RJ45 connector• 4-pair Category cabling• Full duplex communication
– Transmit & receive on same wires simultaneously
• Support for PoE, EEE, Autonegotiation…
10GBASE-T technologies could be used to squeeze more usable bandwidth out of installed cabling
Advanced coding and signal processing allow 2.5Gb/s and 5Gb/s operation of Cat5e cabling developed for 1Gb/s
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IEEE P802.3bz 2.5G/5GBASE-T Task Force
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• November’14: IEEE 802.3 Call For Interest led to formation of Next Generation Enterprise Access BASE-T PHY a study group
• March’15: P802.3bz 2.5G/5GBASE-T Task Force formed
– URL: http://www.ieee802.org/3/bz/index.html
• Approved objectives includes specifying 2.5 Gb/s and 5 Gb/s operation over Category 5e and 6 cabling.– Hot Topics: deployed cabling topologies and bundling;
noise in the target environment, etc.
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In Closing
BASE-T is the foundational technology for Ethernet Enterprise Access.
Speeds higher than 1000BASE-T are required to support future 802.11 wireless deployments
Market diversity has introduced the need for new speeds between Gigabit and 10 Gigabit.
This may be a “once in a decade” transition of the basic network access speed.
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Q&A
PETER JONES, CISCOJOHN D’AMBROSIA, DELLDAVE CHALUPSKY, INTEL
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