Trouble in IP Heaven. Telco Talk IP Destination QOS Class of service Latency Shaped service.

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Trouble in IP Heaven

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Transcript of Trouble in IP Heaven. Telco Talk IP Destination QOS Class of service Latency Shaped service.

Page 1: Trouble in IP Heaven. Telco Talk IP Destination QOS Class of service Latency Shaped service.

Trouble in IP Heaven

Page 2: Trouble in IP Heaven. Telco Talk IP Destination QOS Class of service Latency Shaped service.

Telco Talk IP Destination QOS Class of service Latency “Shaped” service

Page 3: Trouble in IP Heaven. Telco Talk IP Destination QOS Class of service Latency Shaped service.

Carriers Infrastructure

Datapac

PSTN Frame Relay

IP

ATM

MegaRoute

ISDN

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Carrier’s Future

Fibre

SONET

MPLS/IP

Voic

e

Vid

eo

VPN

s

Man

ag

ed

IP

Inte

rnet

Ap

p.

Serv

ices

SONETGE

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Class of Service - Examples

Class 1 - VoIP - Low latency Class 2 - VPN - Moderate

Latency Class 3 - Best effort - DSL

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VoIP and VOIP Voice over IP

Low data rate Can Miss info Low latency

Video over IP High data rate Needs 10 –10 BER Latency depends

on application

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Qos

Output Buffer

Input BufferDropped

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CRC Errors Failed Checksum

Traditional transport Errored info is transferred

IP transport Bad data… Tossed out

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ITU Y.1541

Bit Error Rate

Bit Loss Rate

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Jumbo Frames 1500 bits no more Not WAN material Can Be over 65,000 bits

MTU

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UDP vs. TCP TCP

Confirmed data Wait until ACKed

UDP No “Stop lights” Broadcast Mode Inherent Higher Priority

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Video Data

Mb/s

Time

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“Shaped” Service

Meter

Marker Shaper

Input

Dropped

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Qos

Priority

1

2

3

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Video Stream

12364758

UDP

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File Transfers

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Tools etc…

Ethereal.exe

TCPOptimizer.exe

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Thanks


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