Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits...

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Gigabit Ethernet Gigabit Ethernet Pace University DCS 834 Pace University DCS 834 Presented by Team 1: Presented by Team 1: Stella Konstantinou, Jonus Stella Konstantinou, Jonus Gerrits Gerrits Meg Broderick, Rigoberto Diaz Meg Broderick, Rigoberto Diaz March 22, 2002 March 22, 2002
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Transcript of Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits...

Page 1: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet

Pace University DCS 834Pace University DCS 834

Presented by Team 1:Presented by Team 1:

Stella Konstantinou, Jonus GerritsStella Konstantinou, Jonus Gerrits

Meg Broderick, Rigoberto DiazMeg Broderick, Rigoberto Diaz

March 22, 2002March 22, 2002

Page 2: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit EthernetAgendaAgenda

IntroductionIntroduction S. KonstantinouS. Konstantinou ApplicationsApplications

• Services Services • Comparison with Other TechnologyComparison with Other Technology• Gigabit Ethernet - The FutureGigabit Ethernet - The Future

How Does It Work? How Does It Work? J. GerritsJ. Gerrits• Physical LayerPhysical Layer• MAC LayerMAC Layer

QuestionsQuestions

Page 3: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit EthernetIntroductionIntroduction

IEEE Standards approved in 1998/99IEEE Standards approved in 1998/99• Fiber :Fiber : 1000BaseLX and 1000Base SX1000BaseLX and 1000Base SX• Copper: Copper: 1000BaseT and 1000BaseCX1000BaseT and 1000BaseCX

Benefits:Benefits:• Preserves Ethernet simplicityPreserves Ethernet simplicity• Uses installed base and skillsUses installed base and skills• Incremental implementationIncremental implementation• Connect segmentsConnect segments• Best price performanceBest price performance

Page 4: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet ApplicationsApplications

Transparent LAN Service:Transparent LAN Service:• LAN-to-LAN connects at native speeds & LAN-to-LAN connects at native speeds &

protocols.protocols. Server Switching:Server Switching:

• Highly Optimized to support server farmHighly Optimized to support server farm• Uses layers 3 & 4 for load-balancingUses layers 3 & 4 for load-balancing• ““NIC-bypass” eliminates Ethernet NIC-bypass” eliminates Ethernet

framing between server and switchframing between server and switch

Page 5: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet ApplicationsApplications

(more)(more)

MAN Trunking: MAN Trunking: • Point-to-point high speed trunking to Point-to-point high speed trunking to

hosting providers, storage providers and hosting providers, storage providers and between data centers. between data centers.

• Aggregates several (to 8) switch-server or Aggregates several (to 8) switch-server or switch-switch links into one fat logical pipeswitch-switch links into one fat logical pipe

• Burns through bottlenecks caused by Burns through bottlenecks caused by difference in LAN/WAN transmission difference in LAN/WAN transmission speedsspeeds

Page 6: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet ApplicationsApplications

(more)(more)

WAN Connectivity: WAN Connectivity: • Long-haul linking metro areas/LANsLong-haul linking metro areas/LANs• Generally Improves QoS Generally Improves QoS

– Regulating timing of latencyRegulating timing of latency– Minimizing jittery video and audio delaysMinimizing jittery video and audio delays

However, ATM better forHowever, ATM better for::• Backbone applicationsBackbone applications• Client connections needing specialized QoSClient connections needing specialized QoS

– E.g., Medical imagingE.g., Medical imaging

Page 7: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.
Page 8: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet

Page 9: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.
Page 10: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet ApplicationsApplications

(more)(more)

High Speed Internet Access High Speed Internet Access • Improves EfficiencyImproves Efficiency

– Less overhead than ATMLess overhead than ATM– SONET SONET

– Statistical multiplexing not supportedStatistical multiplexing not supported– Complex protocol: expensive Complex protocol: expensive

• Guarantees QoS requirementsGuarantees QoS requirements– E.g., Bandwidth, Priority ControlE.g., Bandwidth, Priority Control

Page 11: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet The Future The Future

10 Gigabit Ethernet 10 Gigabit Ethernet • IEEE 802.3ae in Final ReviewsIEEE 802.3ae in Final Reviews• No CopperNo Copper• By 2004, 2M+ Ports expected By 2004, 2M+ Ports expected

– $4B in sales of storage apps and Ethernet$4B in sales of storage apps and Ethernet

100 Gigabit Ethernet100 Gigabit Ethernet• A-8800 Optical Ethernet Metro Core A-8800 Optical Ethernet Metro Core

SwitchSwitch• IEEE Standard Being ProposedIEEE Standard Being Proposed

Page 12: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit Ethernet Gigabit Ethernet The Future The Future

Infrastructure ImplicationsInfrastructure Implications• Faster Speed - Same CablingFaster Speed - Same Cabling

– Needs to be tested Needs to be tested – About 10% of Cat 5 cable fails standardsAbout 10% of Cat 5 cable fails standards

• Optical Ethernet NetworksOptical Ethernet Networks– Router to RouterRouter to Router– Host to NetworkHost to Network

Page 13: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet

How Does It How Does It Work?Work?

Page 14: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit EthernetHow Does It Work?How Does It Work?

Uses Ethernet StandardsUses Ethernet Standards Full Duplex Full Duplex

• Simultaneous data transmission & Simultaneous data transmission & receptionreception

CSMA/CD modifiedCSMA/CD modified– Carrier Extension to change propagation delayCarrier Extension to change propagation delay– Frame Bursting to allow multiple consecutive Frame Bursting to allow multiple consecutive

short packets without giving up control of short packets without giving up control of signaling and channelsignaling and channel

Page 15: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet How Does It Work?How Does It Work?

Pause protocolPause protocol• Asymmetric flow controlAsymmetric flow control• Auto negotiation protocolAuto negotiation protocol

8B/10B Encoding8B/10B Encoding• Encodes 8-bit data bytes from GMII to Encodes 8-bit data bytes from GMII to

10-bit code groups10-bit code groups• Serial Serial • Uses NRZ codingUses NRZ coding

Page 16: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet How Does It Work?How Does It Work?

Physical Links:Physical Links:• Optical fiberOptical fiber

– 10 micron single-mode - campus 10 micron single-mode - campus backbonebackbone

– 62.5 micron multimode - building 62.5 micron multimode - building backbonebackbone

• Copper cablingCopper cabling• Unshielded twisted pairUnshielded twisted pair

Page 17: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet How Does It Work?How Does It Work?

Distance:Distance:• 25 Meters for 150 ohm25 Meters for 150 ohm

Slot Time:Slot Time:• 4096 bit times4096 bit times

Interframe gap:Interframe gap:• .096 µsec vs 9.6 µsec for 10 Mbps.096 µsec vs 9.6 µsec for 10 Mbps

Burst LimitBurst Limit• 8192 bits8192 bits

Page 18: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Protocol Layers Addressed In IEEE 802.3

Source: http://computer.org/Internet/v1n5/tollya.htm

Protocol Layers Addressed In IEEE 802.3

Source: http://computer.org/Internet/v1n5/tollya.htm

Page 19: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

MAC Layer IMAC Layer I Throughput marginally better than Fast Throughput marginally better than Fast

EthernetEthernet

Why?Why?

Uses a bigger slot size of 512 bytes to Uses a bigger slot size of 512 bytes to maintain Ethernet compliant. –min/max maintain Ethernet compliant. –min/max frame sizes.frame sizes.

Frame size remains but “carrier event” is Frame size remains but “carrier event” is extended.extended.

LLC is not aware of extension – It is removed LLC is not aware of extension – It is removed before the FCS is checked by receiverbefore the FCS is checked by receiver

Page 20: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

MAC Layer IIMAC Layer II Increase Throughput – Packet BurstingIncrease Throughput – Packet Bursting

How?How?

Pad first packet to the slot time Pad first packet to the slot time • ––if necessary, with carrier extensionif necessary, with carrier extension

Transmit subsequent packets Transmit subsequent packets back to back with minimum Inter-back to back with minimum Inter-packet gap (IPG) until a burst packet gap (IPG) until a burst timer (1500 bytes) expires.timer (1500 bytes) expires.

Page 21: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet

Any Any

Questions?Questions?

Page 22: Gigabit Ethernet Pace University DCS 834 Presented by Team 1: Stella Konstantinou, Jonus Gerrits Stella Konstantinou, Jonus Gerrits Meg Broderick, Rigoberto.

Gigabit EthernetGigabit Ethernet

Thank Thank

You!You!