04-07-2012, 01:07 PM
SEMINAR ON 10 GIGABIT ETHERNET TECHNOLOGY
10 GIGABIT ETHERNET TECHNOLOGY.ppt (Size: 156.5 KB / Downloads: 31)
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.
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.
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 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).