1 6/19/ :50 CS57510 Gigabit Ethernet1 Rivier College CS575: Advanced LANs 10 Gigabit Ethernet

2 6/19/ :50 CS57510 Gigabit Ethernet2 Overview 0 What is 10 Gigabit Ethernet? 0 Why 10 Gigabit Ethernet? 0 Physical Layer Technologies 0 10 Gigabit Ethernet in the LAN 0 10 Gigabit Ethernet in the MAN 0 10 Gigabit Ethernet in MAN over DWDM 0 10 Gigabit Ethernet in the WAN

3 6/19/ :50 CS57510 Gigabit Ethernet3 What is 10 Gigabit Ethernet? 0 An extension to 10, 100, and 1000 Mbps IEEE Ethernet 0 Offering 10 Gigabits per second data rate 0 An emerging IEEE 802.3ae Ethernet standard 0 The first draft of the standard is expected to be completed by IEEE 802.3ae in 2001, with a full ratification of this standard expected by the spring of Gigabit Ethernet will preserve many of the same characteristics of previous versions of Ethernet 0 Unchanged Ethernet frame format and frame size, including both maximum and minimum frame size 0 However, it supports full-duplex operation only 0 10 Gigabit Ethernet is not expected to be used for the direct connection of end-stations and will therefore be offered via fiber optic cable only

4 6/19/ :50 CS57510 Gigabit Ethernet4 What is 10 Gigabit Ethernet? (continued) 0 Initially, 10GbE will be used to provide high-speed interconnection between large-capacity switches in LAN environment 0 As the need increases, 10GbE will be deployed throughout the entire network and will include server farm, backbone, and campus-wide connectivity. 0 In addition, the standard for 10 Gigabit Ethernet is being developed with an option for connection across MAN and WAN links at an expected data rate compatible with OC192 0 This will enable the benefits of Ethernet technology to be extended to the construction of MAN and WAN networks and to provide cost-effective solutions for larger geographic areas 0 This will allow the construction of MANs and WANs that connect geographically dispersed LANs between campuses or points of presence (PoPs)

5 6/19/ :50 CS57510 Gigabit Ethernet5 What is 10 Gigabit Ethernet? (concluded) 0 These connections will be over dark fiber, dark wavelengths, or SONET/TDM (Synchronous Optical Network) networks 0 Such attachment to the optical WAN backbone transport cloud, introduces the concept of "Ethernet Everywhere."

6 6/19/ :50 CS57510 Gigabit Ethernet6 Why 10 Gigabit Ethernet? 0 An explosive growth in both Internet and intranet traffic due to: -Increase in the number of network connections -Increase in the connection speed of each end-station (e.g., 10Mbps users moving to 100Mbps, analog 56k users moving to DSL & Cable modems) -Increase in the deployment of bandwidth-intensive applications such as high-quality video -Increase in Web hosting and application hosting traffic 0 The bandwidth demands of these applications will require an increase in bandwidth hierarchy 0 The deployment of 1000Base-T switches (Gigabit Ethernet over copper) demands faster technology with which to connect these switches  Easy, straightforward migration to higher performance levels without disruption

7 6/19/ :50 CS57510 Gigabit Ethernet7 Why 10 Gigabit Ethernet? (concluded)  Low cost of ownership – including both acquisition and support costs  Familiar management tools and common skills base  Ability to support new applications and data types  Flexibility in network design  Leverages the installed base of more than 300 million Ethernet switch ports  Seamless integration of LAN, MAN, and WAN technologies

8 6/19/ :50 CS57510 Gigabit Ethernet8 Physical Layer Technology 0 Two families of physical interfaces are defined by the IEEE 802.3ae Task Force: -LAN PHY at 10,000 Mbps -WAN PHY at a data rate compatible with OC-192c/SDH VC-4- 64c 0 The IEEE 802.3ae Task Force has also specified physical layer specifications that support link distances of at least 65m over MMF, 300m over installed MMF, as well as over SMF at 2km, 10km and 40km 0 Distance Objectives for IEEE 802.3ae

9 6/19/ :50 CS57510 Gigabit Ethernet9 Physical Layer Technology Source: 10 Gigabit Ethernet Alliance Optical Transceiver for 10 Gigabit Ethernet

10 6/19/ :50 CS57510 Gigabit Ethernet10 Physical Layer Technology (concluded)  The 10 Gigabit Ethernet Task Force has identified an optional interface that matches the data rate and protocol requirements of SONET OC-192/SDH STM-64  Therefore, 10 Gigabit Ethernet will be compatible with SONET/SDH  This enables direct attachment of packet-based IP/Ethernet switches to the SONET/SDH and time division multiplexed (TDM) infrastructure  This feature is very important because it promises the ability for Ethernet to use SONET/SDH for Layer 1 transport across the WAN transport backbone

11 6/19/ :50 CS57510 Gigabit Ethernet11 10 Gigabit Ethernet in the LAN Source: 10 Gigabit Ethernet Alliance

12 6/19/ :50 CS57510 Gigabit Ethernet12 10 Gigabit Ethernet in the MAN Source: 10 Gigabit Ethernet Alliance

13 6/19/ :50 CS57510 Gigabit Ethernet13 10 Gigabit Ethernet in MAN over DWDM Source: 10 Gigabit Ethernet Alliance

14 6/19/ :50 CS57510 Gigabit Ethernet14 10 Gigabit Ethernet in the WAN Source: 10 Gigabit Ethernet Alliance

15 6/19/ :50 CS57510 Gigabit Ethernet15 How the WAN PHY Work Source: 10 Gigabit Ethernet Alliance

16 6/19/ :50 CS57510 Gigabit Ethernet16 Byte Stuffing within the SONET/SDH Payload Source: 10 Gigabit Ethernet Alliance

17 6/19/ :50 CS57510 Gigabit Ethernet17 W. Stalling, Local and Metropolitan Area Networks, 6 th edition, Prentice Hall, 2000, Chapter 7 References W. Stalling, Data and Computer Communications, 6 th edition, Prentice Hall, 2002, Chapters A. Wu, Advanced Local Area Networks, Lectures & Slides, Rivier College, 2001.