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Published byNicholas Robertson
Modified over 3 years ago
Trouble in IP Heaven
Telco Talk IP Destination QOS Class of service Latency Shaped service
Carriers Infrastructure Datapac PSTNFrame Relay IP ATM MegaRoute ISDN
Carriers Future Fibre SONET MPLS/IP Voice Video VPNs Managed IP Internet App. Services SONET GE
Class of Service - Examples Class 1 - VoIP - Low latency Class 2 - VPN - Moderate Latency Class 3 - Best effort - DSL
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
Qos Output Buffer Input Buffer Dropped
CRC Errors Failed Checksum Traditional transport Errored info is transferred IP transport Bad data… Tossed out
ITU Y.1541 Bit Error Rate Bit Loss Rate
Jumbo Frames 1500 bits no more Not WAN material Can Be over 65,000 bits MTU
UDP vs. TCP TCP Confirmed data Wait until ACKed UDP No Stop lights Broadcast Mode Inherent Higher Priority
Video Data Mb/s Time
Shaped Service Meter MarkerShaper Input Dropped
Qos Priority 1 2 3
Video Stream 12364758 UDP
Company LOGO Virtual Master Control.
Streaming Video over the Internet
Lawrence G. Roberts CEO Anagran September 2005 Advances Toward Economic and Efficient Terabit LANs and WANs.
Mr. Mark Welton. Quality of Service is deployed to prevent data from saturating a link to the point that other data cannot gain access to it QoS allows.
1 “ ” Multiservice networking is emerging as a strategically important issue for enterprise and public service provider infrastructures alike.The proposition.
UDP© Dr. Ayman Abdel-Hamid, CS4254 Spring CS4254 Computer Network Architecture and Programming Dr. Ayman A. Abdel-Hamid Computer Science Department.
Network Technologies & Principles 1 Communication Subsystem. Types of Network. Principles of Network. Distributed Protocols.
Network Fundamentals. Network Devices Routers (Layer 3)
CS 457 – Lecture 3 Link Layer Protocols Fall 2011.
WAN Wide Area Networks. Review: zCapacity Allocation: phone system zBandwidth Allocation: data systems.
NSH0503/01/11041 Overview Computer Network Technology By Diyurman Gea.
IP Transmission Technologies. Hourglass of TCP/IP Protocols WWW phone... SMTP HTTP RTP... TCP UDP… IP ethernet PPP… CSMA async sonet... copper fiber.
Networks and Protocols CE Week 5a. WAN’s and ISDN.
Voice over IP in the Enterprise. What is VOIP? The use of data networks to carry voice without a loss of sound quality The use of data networks to carry.
Information technology Data creation Data maintenance Data transfer.
11 September 2015 RE Meyers, Ms.Ed. CCENT ICND1 Exam Topics Review Describe the Operation of Data Networks: Network Diagrams and Data Paths.
ATM Yang Wang Professor: Anvari. Definition 1: ATM is a high bandwidth, low-delay, connection-oriented, packet-like switching and multiplexing.
Huda AL-Omair_ networks61 Wide Area Network. Huda AL-Omair_ networks62 What is a WAN? Wide area network or WAN is a computer network covering a wide geographical.
Building A Network: Cost Effective Resource Sharing
Test #2 Topics Know the wireless propagation problems Understand what the “Golden Zone” is Understand the relationship between bandwidth and transmission.
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