PDF
... It is the process that enhances overall network utilization by attempting to create a uniform or differentiated distribution of traffic throughout the network. An important result of this process is the avoidance of congestion on any one path. It is important to note that traffic engineering does no ...
... It is the process that enhances overall network utilization by attempting to create a uniform or differentiated distribution of traffic throughout the network. An important result of this process is the avoidance of congestion on any one path. It is important to note that traffic engineering does no ...
On-Demand Monitoring of Protocol
... Receiving a PATH-ERROR message from the network means admission has not been granted and the sender can repeat admission requests at the rate specified by the user. In decentralized admission control the PATH message will be relayed to all the necessary parties along the route until it reaches the r ...
... Receiving a PATH-ERROR message from the network means admission has not been granted and the sender can repeat admission requests at the rate specified by the user. In decentralized admission control the PATH message will be relayed to all the necessary parties along the route until it reaches the r ...
Voice Over IP
... Quality of Services (QoS) Technical Constraints Latency is the Most Technical Problem Over Internet Telephony: by Delay, Delay Variance (or Jitter), Asymmetrical Delay, and Unpredictable Delay Twenty (20) ms Coast-to-Coast Delay in the U.S. : Mostly Not Noticeable Fifty (50) ms Delay is Notic ...
... Quality of Services (QoS) Technical Constraints Latency is the Most Technical Problem Over Internet Telephony: by Delay, Delay Variance (or Jitter), Asymmetrical Delay, and Unpredictable Delay Twenty (20) ms Coast-to-Coast Delay in the U.S. : Mostly Not Noticeable Fifty (50) ms Delay is Notic ...
intro-scalability
... I. State: The Enemy of Scalability Routing state: the information that a router needs to keep in order to route Large routing state is bad • Consumes memory • Makes look-up slow ...
... I. State: The Enemy of Scalability Routing state: the information that a router needs to keep in order to route Large routing state is bad • Consumes memory • Makes look-up slow ...
Network Traffic Measurement and Modeling
... Intrusive: the monitoring tool generates traffic of its own during data collection Non-intrusive: the monitoring tool is passive, observing and recording traffic info, while generating none of its own ...
... Intrusive: the monitoring tool generates traffic of its own during data collection Non-intrusive: the monitoring tool is passive, observing and recording traffic info, while generating none of its own ...
Lecture 23
... Congestion – Networks (particularly WANs) have multiple routes to provide end-to-end connectivity ...
... Congestion – Networks (particularly WANs) have multiple routes to provide end-to-end connectivity ...
slides - network systems lab @ sfu
... networks for individual application sessions resource reservation: routers maintain state info of allocated resources, QoS req’s admit/deny new call setup requests: Question: can newly arriving flow be admitted with performance guarantees while not violated QoS guarantees made to already admitte ...
... networks for individual application sessions resource reservation: routers maintain state info of allocated resources, QoS req’s admit/deny new call setup requests: Question: can newly arriving flow be admitted with performance guarantees while not violated QoS guarantees made to already admitte ...
Convergence VoIP
... • Voice over IP (VoIP) indicates that an analog voice signal has been digitized and converted into the packet format used by IP. This is done in order to allow telephony and other audio signals to be transported over the same network as regular data traffic. Thus, VoIP refers to a conversion and tra ...
... • Voice over IP (VoIP) indicates that an analog voice signal has been digitized and converted into the packet format used by IP. This is done in order to allow telephony and other audio signals to be transported over the same network as regular data traffic. Thus, VoIP refers to a conversion and tra ...
Chapter 1 - William Stallings, Data and Computer
... modern systems are more reliable errors can be caught in end system Frame Relay provides higher speeds with most error control overhead removed ...
... modern systems are more reliable errors can be caught in end system Frame Relay provides higher speeds with most error control overhead removed ...
SINET3: NII?s new Network
... Network Structure of SINET3 SINET3 has two-layer structure with edge and core nodes. Edge nodes are edge layer-1 switches with layer-2 multiplexing, which are located in universities or research institutions and accommodate user equipment. Core nodes are composed of high-end IP routers and co ...
... Network Structure of SINET3 SINET3 has two-layer structure with edge and core nodes. Edge nodes are edge layer-1 switches with layer-2 multiplexing, which are located in universities or research institutions and accommodate user equipment. Core nodes are composed of high-end IP routers and co ...
Slide
... Optimizing SONET costs doesn’t mean you have optimized total service delivery cost Today operational, service, and complete network topology roadblocks hinder such a network configuration Architectures which address these problems are emerging Price points for equipment and operations are changing, ...
... Optimizing SONET costs doesn’t mean you have optimized total service delivery cost Today operational, service, and complete network topology roadblocks hinder such a network configuration Architectures which address these problems are emerging Price points for equipment and operations are changing, ...
SAC Conference Tutorial
... » minimize delivery delay » minimize delay variations » provide consistent data throughput capacity ...
... » minimize delivery delay » minimize delay variations » provide consistent data throughput capacity ...
USAIA
... • QoS QoS setup in advance with quantitative description of requested QoS termination of RSVP at well-defined location de-coupling of QoS and Mobility (movement do not influence QoS) ...
... • QoS QoS setup in advance with quantitative description of requested QoS termination of RSVP at well-defined location de-coupling of QoS and Mobility (movement do not influence QoS) ...
U2Net: Boosting ultra-broadband TextStart By Zhang Kejing U2Net
... growing demands for LTE and LTE-A. Numerous multi-Gbps backhaul technologies have emerged, including fiber-based IP backhaul, GPON, SuperMIMO, G.fast, header compression for IP microwave, and E-band. A backhaul network should also accommodate clock synchronization technologies such as Ethernet, 1588 ...
... growing demands for LTE and LTE-A. Numerous multi-Gbps backhaul technologies have emerged, including fiber-based IP backhaul, GPON, SuperMIMO, G.fast, header compression for IP microwave, and E-band. A backhaul network should also accommodate clock synchronization technologies such as Ethernet, 1588 ...
No Slide Title - comp
... • Packet switching, rather than message switching, and the packet size is limited to avoid monopoly. • Need other mechanisms for packet transmission. – Packet scheduling – Medium access mechanisms ...
... • Packet switching, rather than message switching, and the packet size is limited to avoid monopoly. • Need other mechanisms for packet transmission. – Packet scheduling – Medium access mechanisms ...
Chapter 7
... networks for individual application sessions resource reservation: routers maintain state info of allocated resources, QoS req’s admit/deny new call setup requests: Question: can newly arriving flow be admitted with performance guarantees while not violated QoS guarantees made to already admitte ...
... networks for individual application sessions resource reservation: routers maintain state info of allocated resources, QoS req’s admit/deny new call setup requests: Question: can newly arriving flow be admitted with performance guarantees while not violated QoS guarantees made to already admitte ...
Chapter6.5
... periodically refreshed • Each flow needs to be policed, classified, queued, etc • So clearly the problem is scalability (it’s BAD!) Spring 2002 ...
... periodically refreshed • Each flow needs to be policed, classified, queued, etc • So clearly the problem is scalability (it’s BAD!) Spring 2002 ...
02-design
... • Yes, but only to improve performance • If network is highly unreliable • Adding some level of reliability helps performance, not correctness • Don’t try to achieve perfect reliability! • Implementing a functionality at a lower level should have minimum performance impact on the applications that d ...
... • Yes, but only to improve performance • If network is highly unreliable • Adding some level of reliability helps performance, not correctness • Don’t try to achieve perfect reliability! • Implementing a functionality at a lower level should have minimum performance impact on the applications that d ...
Flow-based Performance Measurement
... Multi-core CPU processing and multi-threading of packets in the sender and receiver. In the simplest case that data transmits along a single path, DSCP can be used to classify the flow in order to avoid the packet reordering. The packet loss calculation is based on sample statistic, by increasing th ...
... Multi-core CPU processing and multi-threading of packets in the sender and receiver. In the simplest case that data transmits along a single path, DSCP can be used to classify the flow in order to avoid the packet reordering. The packet loss calculation is based on sample statistic, by increasing th ...
ppt
... • Admission control can only turn away new requests sometimes it may be have been better to terminate an existing flow • U(0) != 0 users tend to be very unhappy with no service – perhaps U should be discontinuous here ...
... • Admission control can only turn away new requests sometimes it may be have been better to terminate an existing flow • U(0) != 0 users tend to be very unhappy with no service – perhaps U should be discontinuous here ...
02-design
... • Yes, but only to improve performance • If network is highly unreliable • Adding some level of reliability helps performance, not correctness • Don’t try to achieve perfect reliability! • Implementing a functionality at a lower level should have minimum performance impact on the applications that d ...
... • Yes, but only to improve performance • If network is highly unreliable • Adding some level of reliability helps performance, not correctness • Don’t try to achieve perfect reliability! • Implementing a functionality at a lower level should have minimum performance impact on the applications that d ...
15-744: Computer Networking
... QoS • IntServ • DiffServ • Assigned reading • [ [She95] Fundamental Design Issues for the Future Internet • [CSZ92] Supporting Real-Time Applications in an Integrated Services Packet Network: Architecture and Mechanisms ...
... QoS • IntServ • DiffServ • Assigned reading • [ [She95] Fundamental Design Issues for the Future Internet • [CSZ92] Supporting Real-Time Applications in an Integrated Services Packet Network: Architecture and Mechanisms ...
Network QoS configuration and roll-out Using NetIQ
... • Starts with the end user Quality of Experience • Industry Standards based • Automated path level diagnostics for actual calls • Real-time management of calls in progress • Life-cycle model covers all phases of VoIP Deployment ...
... • Starts with the end user Quality of Experience • Industry Standards based • Automated path level diagnostics for actual calls • Real-time management of calls in progress • Life-cycle model covers all phases of VoIP Deployment ...