The Impact on the Internet Economy from Gigabit Ethernet and Beyond APRICOT 2001

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The Impact on the Internet Economy from Gigabit
Ethernet and BeyondAPRICOT 2001
Randall AtkinsonSenior Scientist, Extreme
Networks
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Global Internet is Changing Everything!!!
Ethernet/Fast Ethernet
Desktop
Segment
FDDI
ATM
MAN
Data Center
Core Routers or Switches
Internet
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Network Infrastructure Requirements
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The Increasing Role of Ethernet
10,000 Mbps 10 GigabitEthernet
1000 Mbps GigabitEthernet
1000 Mbps GigabitEthernet
10/100 Mbps Ethernet
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IEEE 802.3ae 10 Gigabit Ethernet

• Motivation
• Leverage success and scalability of Ethernet
• Opportunity to converge Ethernet with Optical
  Networking

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802.3ae 10GE Objectives -- Compatibility

• Objectives for Ethernet compatibility
• Preserve the Ethernet/802.3 frame format at the
  MAC Client Interface
• Preserve the minimum and maximum frame size of
  the current 802.3 standard
• Support full duplex operation only
• Support star-wired local area networks using
  point-to-point links and structured cabling
  topologies
• Support 802.3ad Link Aggregation
• In other words
• Ensure compatibility with previous generations of
  Ethernet by preserving the MAC interface, frame
  format, and frame size

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802.3ae 10GE Objectives -- Physical Layer

• Objectives for native-Ethernet and SONET-friendly
  physical layers
• Support an optional Media Independent Interface
  (MII).
• Support a speed of 10.000 Gb/s at the MAC/PLS
  service interface.
• Define two families of PHYs
• A LAN PHY operating at a data rate of 10.000
  Gb/s.
• A WAN PHY operating at a data rate compatible
  with the payload rate of OC-192c/SDH VC-4-64c
• Define a mechanism to adapt the MAC/PLS data rate
  to the data rate of the WAN PHY.

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LAN PHY vs. WAN PHY

• Ethernet PHY - connects media to MAC
• PCS (Physical Coding Sublayer)
• e.g., 64b/66b coding, serializer and multiplexing
  functions
• PMD (Physical Media Dependent)
• e.g., optical transceivers
• LAN PHY vs. WAN PHY
• Operate over common PMDs
• WAN PHY includes a simplified SONET/SDH framer
• Simplified - reject conformance to SONET/SDH
  jitter,
• clock, etc.

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Optical Transceivers (PMD types)
Minimum Distance
Diameter
PMD
Fiber Supported
At least 65m
50.0
850nm serial
Multimode
62.5
At least 300m
1310nm WWDM
Multimode
At least 2 km, 10 km
9.0
Single Mode
At least 2 km, 10 km
9.0
1310nm serial
Single Mode
At least 40 km
9.0
1550nm serial
Single Mode
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Ethernet Changes Everything

• Familiar technology and environment
• Ethernet end-to-end
• Inherently scalable technology
• Unmatched value proposition for data-optimized
  MANs
• 1/5 the cost for equivalent bandwidth

Ethernet
10 Mbs
100 Mbs
1 Gbs
10 Gbs
OC3(155 Mbs)
OC12 (622 Mbs)
OC48 (2.4 Gbs)
OC192 (9.6 Gbs)
SONET/SDH
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Technology Comparison Summary
Ethernet
SDH/SONET

• Reliability
• Guaranteed QoS
• Voice centric
• Inefficient data transport
• Expensive
• Complex

• Lots of capacity and speed
• Low-cost
• Ubiquitous
• Ease of use
• Data-optimized
• Variable latency
• (Distance limitations)
• Traditionally LAN focused

Pros
Cons
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Quality of Service

• SONET/SDH well known for QoS
• Guaranteed Bandwidth
• Fixed latency
• By reserving transmission time (timeslots)

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SONET/SDH style QoS for Ethernet

• Reserve transmission timeslots
• Classify by 802.1p/Q, DiffServe, TCP/UDP session,
  protocol, subnet etc
• Rate shape (police) incoming traffic
• Manage the Bandwidth
• Bits/bytes per second
• NOT packets/second thats CoS
• Rate shaping (Policing)
• Latency/jitter reduction
• IP-TDM

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Bandwidth by the Slice
Bi-directional
Guaranteed!
Min 15Mb/s Subnet X
Max 30Mb/s Diffserve
Min 5Mb/s VoIP

• Committed Information Rate (CIR) -type services
  for Ethernet
• Bi-direct rate shaping
• Control traffic on Egress
• Police traffic on Ingress

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IP TDM Reducing Jitter
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Applications
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Municipal Metropolitan Area Network
City Hall
Police Stations
Water Treatment Plant
Libraries
Public Work Offices
Fire Stations

• City of Hillsboro (USA)
• City of Ann Arbor (USA)
• City of Tento (Italy)
• City of Leuven (Belgium)
• City of Stockholm (Sweden)

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Telco Metropolitan Area Network

• KORNET, "the KORea-telecom interNET",
• 1st Commercial Internet Service Network in Korea
  since 1994
• More than 110 Extreme Networks BlackDiamond
  switches in MAN
• Applications GigaPOP, Core Backbone, Internet
  Data Centers

Oversea Network
Service
Oversea Connection
Leased Line PSTN / ISDN
High Speed Internet Service
China
IDC VPN
Thailand
U.S.A
Japan
ADSL BA
Hong Kong
Taiwan
Singapore
Indonesia
Total Up to 700M
Satellite B-WLL
Web Hosting Co-Location
Australia
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Lit Building - Multi-Tenant Units by BLECs
Customer Premise

• On-site Access (USA)
• Broadband Office (USA)
• Intellispace (USA)
• Eureka Broadband (USA)
• WizNet (Canada)

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Residential MAN - Multi-tenant Dwellings

• Nordic
• e.g., City of Orebro, Sweden

Wide AreaNetwork
Metropolitan AreaNetwork
Multi Tenant Dwellings
Multi-tenant Dwellings
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Internet Exchange - ISP/ICP Peering
ServicesMAGIE (Houston, U.S.A.), LINX (London,
U.K.)
ICP 3
ISP E
Internet
ISP A
ICP 2
ISP B
ISP C
ISP D
ICP 1
ISP/ICP Peering Services
ISP-Internet Service Provider
ICP-Internet Content Provider
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Yipes Regional Area Gigabit Network
Yipes Metropolitan Fiber Network
Yipes GigaPOPs
100 Mbps Connection to Level 3
Public Peering at CIX at 100 Mbps (UUNet, Sprint,
MCI, etc.) Private Peering at PAIX at 100
Mbps DS-3 Connection to UUNet and Level 3
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Cable Television MAN - Broadband IP Services
Nanjing CATV Network
1G
100M
100M
1G
2G
1G
2G
100M
2G
100M
100M
2G
100M
1G
1G
1G
100M
1G
100M
100M
100M
100M
100M
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Thank you !
www.extremenetworks.com