Week 1 - DePaul University
... IBM’s Systems Network Architecture Created in the 1970s Being replaced with TCP/IP but still out there a ...
... IBM’s Systems Network Architecture Created in the 1970s Being replaced with TCP/IP but still out there a ...
Introduction - Eastern Illinois University
... sofware (e.g. Eudora) and the Network • Provides services like: Identification of the intended communication partner, determining resources availability for communication, etc. ...
... sofware (e.g. Eudora) and the Network • Provides services like: Identification of the intended communication partner, determining resources availability for communication, etc. ...
QoS: IntServ and DiffServ
... • Rate limiting of EF packets at edges only, using token bucket to shape transmission • Simple forwarding: classify packet in one of two queues, use priority – EF packets are forwarded with minimal delay and loss (up to the capacity of the router) ...
... • Rate limiting of EF packets at edges only, using token bucket to shape transmission • Simple forwarding: classify packet in one of two queues, use priority – EF packets are forwarded with minimal delay and loss (up to the capacity of the router) ...
Document
... capacity dedicated resources: no sharing circuit-like (guaranteed) performance call setup required ...
... capacity dedicated resources: no sharing circuit-like (guaranteed) performance call setup required ...
Chapter 4. Network Layer
... output buffer switching rate: rate at which packets can be transfer from inputs to outputs often measured as multiple of input/output line rate ...
... output buffer switching rate: rate at which packets can be transfer from inputs to outputs often measured as multiple of input/output line rate ...
Networking Basics Introducing Basic Network Concepts *In the
... Routing: Accessing Hosts Outside the Network • Within a network or a subnetwork, hosts communicate with each other without the need for any Network layer intermediary device. • When a host needs to communicate with another network, an intermediary device, or router, acts as a gateway to the other n ...
... Routing: Accessing Hosts Outside the Network • Within a network or a subnetwork, hosts communicate with each other without the need for any Network layer intermediary device. • When a host needs to communicate with another network, an intermediary device, or router, acts as a gateway to the other n ...
The performance of circuit switching in the Internet
... CS-SJF in a real network, we will no longer consider it in our M/G/N model. Figure 5 compares the response time for CS-FCFS against PS-PrSh for different flow-rates. The ratio, N, between the link rate and the maximum flow rate is varied from 1 to 256. We observe that as the number of flows carried ...
... CS-SJF in a real network, we will no longer consider it in our M/G/N model. Figure 5 compares the response time for CS-FCFS against PS-PrSh for different flow-rates. The ratio, N, between the link rate and the maximum flow rate is varied from 1 to 256. We observe that as the number of flows carried ...
tutorial1
... • ARP (Address Resolution Protocol) serves for mapping from high-level IP address into low level MAC address. • Two machines on a given network can communicate only if they know each other’s physical network address ...
... • ARP (Address Resolution Protocol) serves for mapping from high-level IP address into low level MAC address. • Two machines on a given network can communicate only if they know each other’s physical network address ...
ISO Layer and TCP Fundamentals
... • Destination host is responsible for reassembling all fragments into original packet • Performance impact on modern (ASIC based) routers ...
... • Destination host is responsible for reassembling all fragments into original packet • Performance impact on modern (ASIC based) routers ...
Using NViz tool for Environmental Sensor Networks Anh-Vu Dinh-Duc , Non-member
... frames to their intended destinations. In addition, the discovery and maintenance of routes between devices devolve to the network layer. Also, the discovery of one-hop neighbors and the storing of pertinent neighbor information are done at the network layer. ZigBee is best described by referring to ...
... frames to their intended destinations. In addition, the discovery and maintenance of routes between devices devolve to the network layer. Also, the discovery of one-hop neighbors and the storing of pertinent neighbor information are done at the network layer. ZigBee is best described by referring to ...
University of Tehran
... ATM networks introduced commercially in early nineties. » designed to match packet networks’ ability to serve many different applications » improve support for real-time applications by allowing bandwidth reservation and support for guaranteed Quality of Service (QOS) » improve support for multicast ...
... ATM networks introduced commercially in early nineties. » designed to match packet networks’ ability to serve many different applications » improve support for real-time applications by allowing bandwidth reservation and support for guaranteed Quality of Service (QOS) » improve support for multicast ...
cross_ip - cs.wisc.edu
... • A more efficient approach is to implement an array of l buffers preceded by a shifter – Shifter insures buffers are filled in round robin order • Insures that buffers never differ by more than one packet in their level of occupancy ...
... • A more efficient approach is to implement an array of l buffers preceded by a shifter – Shifter insures buffers are filled in round robin order • Insures that buffers never differ by more than one packet in their level of occupancy ...
ch20
... Network can provide sequencing and error control Packets are forwarded more quickly No routing decisions to make Less reliable Loss of a node looses all circuits through that node Datagram No call setup phase Better if few packets More flexible Routing can be used to avoid conges ...
... Network can provide sequencing and error control Packets are forwarded more quickly No routing decisions to make Less reliable Loss of a node looses all circuits through that node Datagram No call setup phase Better if few packets More flexible Routing can be used to avoid conges ...
20061206-fiveelements-snow
... Direct end-to-end Low latency & low jitter Predictable QoS Off-load Routers ...
... Direct end-to-end Low latency & low jitter Predictable QoS Off-load Routers ...
week8-1
... – SOH: Start of Header (ASCII code: 0000001) – EOT: End of Transmission (ASCII code: 0000100) – To enable computer to distinguish two packets, the SOH and EOT must be unique and different from the payload. ...
... – SOH: Start of Header (ASCII code: 0000001) – EOT: End of Transmission (ASCII code: 0000100) – To enable computer to distinguish two packets, the SOH and EOT must be unique and different from the payload. ...
Use of a WDM network
... • Alternatives for the core network nodes: – Packet switches with packets of format anything other than the IP datagram format, e.g. ATM, MPLS (MultiProtocol Label Switching) – SONET/SDH circuit switches (TDM) – “IP switches” - resource reservation at the IP layer using RSVP or some network manageme ...
... • Alternatives for the core network nodes: – Packet switches with packets of format anything other than the IP datagram format, e.g. ATM, MPLS (MultiProtocol Label Switching) – SONET/SDH circuit switches (TDM) – “IP switches” - resource reservation at the IP layer using RSVP or some network manageme ...
pdf
... • given datagram dest., lookup output port using forwarding table in input port memory (“match plus action”) • goal: complete input port processing at ‘line speed’ • queuing: if datagrams arrive faster than forwarding rate into switch fabric ...
... • given datagram dest., lookup output port using forwarding table in input port memory (“match plus action”) • goal: complete input port processing at ‘line speed’ • queuing: if datagrams arrive faster than forwarding rate into switch fabric ...
A(t)
... (“dialing”), 2. Communicate, 3. Close circuit (“tear down”). Originally, a circuit was an end-to-end physical wire. Nowadays, a circuit is like a virtual private wire: each call has its own private, guaranteed data rate from end-to-end. ...
... (“dialing”), 2. Communicate, 3. Close circuit (“tear down”). Originally, a circuit was an end-to-end physical wire. Nowadays, a circuit is like a virtual private wire: each call has its own private, guaranteed data rate from end-to-end. ...
a sequence preserving efficient packet scheduler using
... The algorithm lets every active data flow to take turns in transferring packets on a shared channel in a periodically repeated order. The scheduling is non-work conserving, meaning that if one flow is out of packets, next data flow will take its place. These services demand service differentiated an ...
... The algorithm lets every active data flow to take turns in transferring packets on a shared channel in a periodically repeated order. The scheduling is non-work conserving, meaning that if one flow is out of packets, next data flow will take its place. These services demand service differentiated an ...
Optimizing Peering with Routing-Aware Traffic Analysis
... they traverse • Also, allows modification of the routing model to see how traffic is affected ...
... they traverse • Also, allows modification of the routing model to see how traffic is affected ...
GAN Abbreviations
... Integrated Service Digital Network This is a reliable high-speed digital communications technology that supports a wide range of services including Internet, Intranet, e-mail, data, voice, fax and video. ...
... Integrated Service Digital Network This is a reliable high-speed digital communications technology that supports a wide range of services including Internet, Intranet, e-mail, data, voice, fax and video. ...
Lecture3-wireless
... – ZigBee Alliance: “an association of companies working together to enable reliable, costeffective, low-power, wirelessly networked, monitoring and control products based on an open global standard.” – IEEE 802 Working Group 15 ...
... – ZigBee Alliance: “an association of companies working together to enable reliable, costeffective, low-power, wirelessly networked, monitoring and control products based on an open global standard.” – IEEE 802 Working Group 15 ...
Import Settings:
... routing entry is manually entered into the routing table with the route add command, this is known as static routing. 20. _________ uses a clocking circuit to control the timing of communications between two WAN devices such as routers. Answer: Static route Difficulty: Medium Section Reference: Defi ...
... routing entry is manually entered into the routing table with the route add command, this is known as static routing. 20. _________ uses a clocking circuit to control the timing of communications between two WAN devices such as routers. Answer: Static route Difficulty: Medium Section Reference: Defi ...
Packet switching
Packet switching is a digital networking communications method that groups all transmitted data into suitably sized blocks, called packets, which are transmitted via a medium that may be shared by multiple simultaneous communication sessions. Packet switching increases network efficiency, robustness and enables technological convergence of many applications operating on the same network.Packets are composed of a header and payload. Information in the header is used by networking hardware to direct the packet to its destination where the payload is extracted and used by application software.Starting in the late 1950s, American computer scientist Paul Baran developed the concept Distributed Adaptive Message Block Switching with the goal to provide a fault-tolerant, efficient routing method for telecommunication messages as part of a research program at the RAND Corporation, funded by the US Department of Defense. This concept contrasted and contradicted the heretofore established principles of pre-allocation of network bandwidth, largely fortified by the development of telecommunications in the Bell System. The new concept found little resonance among network implementers until the independent work of Donald Davies at the National Physical Laboratory (United Kingdom) (NPL) in the late 1960s. Davies is credited with coining the modern name packet switching and inspiring numerous packet switching networks in Europe in the decade following, including the incorporation of the concept in the early ARPANET in the United States.