10 gigabit ethernet technology

TECHNICAL SEMINAR REPORT
National Institute of Science & Technology 1
10 GIGABIT ETHERNET
TECHNOLOGY
Presented by
RRaammoottaarr PPrraassaadd SSaahhoooo
Roll No:CS200118210
Under the Guidance
of
MMrr.. PPrraaddeeeepp KKuummaarr JJeennaa..

10 GIGABIT ETHERNET TECHNOLOGY
INTRODUCTION
• Ethernet essential for internet.
• 10 Gigabit Ethernet is the latest.
• It finds its applications in LAN, MAN, WAN and SAN.
• Provides high speed and reliable network.
• Provides low installation and maintenance cost.
Presented By: Ramotar Prasad Sahoo

HISTORY
• Developed by Robert Metcalfe and David Boggs in 1973
at Xerox PARC.
• In June 2002 IEEE adopted 10 Gigabit Ethernet
Standard(802.3ae).

10 GbE TECHNOLOGY OVERVIEW
• Retention of 802.3 MAC and frame format
• 64 – 1518 Byte frames
• Jumbo-frames not included in standard
• No half duplex mode
• different from other versions of Ethernet
• No CSMA/CD on full duplex
• Simultaneous sending and receiving at all times
• Works with 802.1Q, 802.3ad, etc.
• Fiber interfaces only – no copper versions
• LAN PHY – 10Gb/s
• WAN PHY – 9.29Gb/s (SONET framing overhead)

10 GbE STANDARD
• Under the International Standards Organization’s Open
Systems Interconnection (OSI) model, Ethernet is
fundamentally a Layer 2 protocol.
• IEEE 802.3ae was adapted to include 10-Gbps full-duplex
transmission over fiber-optic cable.
• 10 Gigabit Ethernet uses the IEEE 802.3 Ethernet Media
Access Control (MAC) protocol, the IEEE 802.3 Ethernet
frame format, and the minimum and maximum IEEE 802.3
frame size.
• 10 Gigabit Ethernet remains true to the original Ethernet
model.

10 GbE ARCHITECTURES
• 10 Gigabit Ethernet uses two separate encoding steps.
• The encoded data provides synchronization, efficient usage of
bandwidth, and improved signal-to-noise ratio characteristics.
• All 10GbE varieties use optical fiber media.

802.3ae Architectural Components
Full Duplex 802.3 Media Access Control (MAC)
10Gb Media Independent Interface (XGMII) or
10Gb Attachment Unit Interface (XAUI)
WWDM
LAN
PHY
8B/10B
WWDM
PDM
1310nm
Serial LAN PHY
64B/66B
Serial
PMD
850nm
Serial
PMD
1310nm
Serial
PMD
1550nm
Serial WAN PHY
64B/66B + WIS
Serial
PMD
850nm
Serial
PMD
1310nm
Serial
PMD
1550nm

GIGABIT vs 10-GIGABIT ETHERNET
Gigabit Ethernet 10-Gigabit Ethernet
CSMA/CD + full duplex Full duplex only
Leveraged Fibre Channel PMDs New optical PMDs
Reused 8B/10B coding New coding schemes 64B/66B
Optical/copper media Optical media only
(copper in development)
Support LAN to 5 km Support LAN to 40 km

CHIP INTERFACE(XAUI)
• The XAUI is designed as an interface extender, and the
interface, which it extends, is the XGMII, the 10 Gigabit
Media Independent Interface.The XGMII is a 74 signal
wide interface (32-bit data paths for each of transmit
and receive) that may be used to attach the Ethernet
MAC to its PHY.
• Benefits of XAUI technology - low EMI due to it's self-clocked
nature, compensation for multi-bit bus skew --
allowing significantly longer-distance chip-to-chip --
error detection and fault isolation capabilities, low power
consumption, and the ability to integrate the XAUI I/O
within commonly available CMOS processes.

PHYSICAL MEDIA DEPENDENTS(PMDs)
• The IEEE 802.3ae Task Force has developed a draft
standard that provides a physical layer that supports link
distances for fiber optic media as shown in Table A. To
meet these distance objectives, four PMDs were
selected.

PHYSICAL LAYER(PHYs)
• The LAN PHY and the WAN PHY will operate over common
PMDs and, therefore, will support the same distances. .
• The 10 Gigabit LAN PHY is intended to support existing
Gigabit Ethernet applications at ten times the bandwidth with
the most cost-effective solution.
• The 10 Gigabit Ethernet WAN PHY supports connections to
existing and future installations of SONET/SDH (Synchronous
Optical Network/Synchronous Digital Hierarchy) circuit-switched
telephony access equipment.

APPLICATIONS FOR 10 GbE
10 Gigabit Ethernet in Local Area Networks
• Ethernet technology is already the most deployed technology for
high performance LAN environments.
• With the extension of 10 Gigabit Ethernet into the family of
Ethernet technologies, the LAN now can reach farther and
support up coming bandwidth hungry applications.
• With 10 Gigabit backbones installed, companies will have the
capability to begin Gigabit Ethernet service to workstations and,
eventually, to the desktop in order to support applications such as
streaming video, medical imaging, centralized applications, and
high-end graphics.

10 GbE in Metropolitan and Storage Area Networks
• Gigabit Ethernet is already being deployed as a
backbone technology for dark fiber metropolitan
networks. With appropriate 10 Gigabit Ethernet
interfaces, optical transceivers and single mode fiber,
service providers will be able to build links reaching
40km or more.
• 10 Gigabit Ethernet will provide infrastructure for both
network-attached storage (NAS) and storage area
networks (SAN).

10 Gigabit Ethernet in Wide Area Networks
• 10 Gigabit Ethernet will enable Internet service
providers (ISP) and network service providers (NSPs)
to create very high-speed links at a very low cost,
between co-located, carrier-class switches and routers
and optical equipment that is directly attached to the
SONET/SDH cloud.
• 10 Gigabit Ethernet with the WAN PHY will also allow
the construction of WANs that connect geographically
dispersed LANs between campuses or POPs (points of
presence) over existing SONET/SDH/TDM networks.

10 Gigabit Ethernet as a Fabric Interconnect
10 Gigabit Ethernet is in a position to replace all these
proprietary technologies as a next-generation interconnect
for both server and storage-area networks for several
reasons:
• Cost-Saving Server Consolidation.
• 10 Gigabit Ethernet Offers the Necessary Bandwidth.
• Planned Growth of 10 Gigabit Network Features.

USING FIBER IN 10GbE
• There are two types of optical fiber, multimode and
single mode fiber, that are currently used in data
networking and telecommunications applications.
• The 10 Gigabit Ethernet technology, as defined in the
IEEE 802.3ae standard, supports both optical fiber
types.
• However, the distances supported vary based on the
type of fiber and wavelength (nm) is implemented in the
application.

THE FUTURE OF 10GbE
Will There be Copper?
• IEEE 802.3 has recently formed two new study groups
to investigate 10 Gigabit Ethernet over copper cabling.
• The 10GBASE-CX4 study group is developing a
standard for transmitting and receiving XAUI signals via
a 4-pair twinax cable, commonly referred to as a 4x
InfiniBand cable.
• The 10GBASE-T study group is developing a standard
for the transmission and reception of 10 Gigabit
Ethernet via a Category 5 or better unshielded twisted
pair (UTP) copper cable up to 100 m.

10 GbE MARKET OVERVIEW
• Extension of existing Ethernet family of standards
• Another 10x jump for higher capacity
• Typical Ethernet applications at higher speed
• Also positioned as a MAN/WAN technology for use over
dark fiber or SONET/SDH

CONCLUSION
• 10 Gigabit Ethernet is very much necessary for
today’s network and is viable now.
• 10 Gigabit Ethernet forms the backbone of
today’s network due to its enhanced features.
• In future it will provide more better networking
solutions as continuous efforts have been put
into it to upgrade it.

TTHHAANNKKYYOOUU !!!!!!!!!!!!!!!!

10 gigabit ethernet technology

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