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| | HW11 |
 | | With the advent of fiber optic cable, fast packet switching uses a technique in which a packet is received and is relayed or retransmitted even before the entire packet has been received. | | | Packet switching was originally developed to handle data which is bursty in nature and data which is not delay sensitive. | | | For example, if a switching circuit resides on a DQDB bus with a single user at the far end of the bus with many other users located near the switching circuit, the user located far away will always be given a level 3 priority, potentially never allowed access to the switch. |
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http://usuario.cicese.mx/~aarmenta/frames/redes/misc/tecnologias/gessd.html
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| | Labeled Optical Burst Switching for IP-over-WDM Integration |
| | The optical burst switching paradigm proposed in [68, 10, 12] can be applied to achieve a good balance between optical packet and circuit switching. | | | Many variations of circuit- and packet-switching methods have been applied to optical networks where data is kept in the optical domain during switching to alleviate the electronic processing/switching bottleneck(s) and achieve certain degree of transparency to bit rates, protocols, and coding formats. | | | A burst has an intermediate granularity when compared to the basic switching (or transferring) units in circuit and packet switching, which are a call (or session) and a packet, respectively. |
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http://www.comsoc.org/~ci/private/2000/sep/qiao.html
(7904 words)
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| | Ethernet & Related Terminology |
| | Ethernet: distributed packet switching for local computer networks. | | | Controller—An Ethernet controller is the station-specific low level firmware or software for getting packets onto and out of the Ether. | | | More specifically, Tech Target.com refers to it as "Bandwidth (the width of a band of electromagnetic frequencies) is used to mean (1) how fast data flows on a given transmission path, and (2), somewhat more technically, the width of the range of frequencies that an electronic signal occupies on a given transmission medium. |
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http://www3.baylor.edu/~Sharon_P_Johnson/etg/terms.htm
(2293 words)
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| | Optical Networks Projects - RTI International |
| | In this scenario, just-in-time (JIT) signaling applied to the optical burst switching (OBS) paradigm has the promise of being able to provide either circuit-switched or packet-switched services. | | | All-optical packet network systems have posed several technical challenges, including the need for optical buffering, optical routing logic, fast tunable devices, and design of suitable media access control (MAC) protocols. | | | All landlines will be optically based, with optical access to the user or device that is a client of the network. |
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http://www.rti.org/page.cfm?nav=129&objectid=845A74D1-BF4A-4986-B675155ED76CBB93
(1108 words)
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| | Published Works |
| | A. Pelletier, M. Cotton, L.G. Mason, "Combined Adaptive Routing and Flow Control in Fast Packet Switching Networks", Proceedings of COMCON 4, Rhodes, Greece, June 1993. | | | Y. Xiong and L. Mason, "Analysis of mulicast ATM switching networks using CRWR scheme", Computer Networks and ISDN Systems 30 (1998) 835-854. | | | Xiong and L. Mason, "Performance of multistage ATM switching networks with multicast capability", Special Issue on ATM Switching, International Journal of Computer Systems Science & Engineering, 1997. |
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http://www.tsp.ece.mcgill.ca/Mason/Publications/Papers.htm
(1108 words)
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| | Evolution of Multiprotocol Label Switching |
| | Label switch routers (LSR) in MPLS use link-level forwarding to provide a simple and fast packet-forwarding capability. | | | Multiprotocol label switching (MPLS) [3, 4] is not a silver bullet to cure existing or forthcoming problems, but rather an enabling technology which addresses some of these scaling issues. | | | A tree results because of the "merging" of switched paths that occurs at a node when multiple upstream switched paths for a given stream are spliced to a single downstream switched path for the stream. |
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http://www.comsoc.org/ci/private/1998/may/Feldman.html
(8960 words)
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| | TCP-OBS-Rama-Sep02.ppt |
| | Optical packet switching on the other hand needs fast reconfiguration of switches, with support for ultra-fast processing speeds. | | | Associated or possible problems: TCP is focused to work on traditional packet switched networks. | | | Circuit switching, an all optical circuit (lightpath) is set from the source to the destination, for the entire session duration and holds bandwidth even if data is not transferred. |
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http://www.cs.umbc.edu/~dawnlab/Slides/TCP-OBS-Rama-Sep02.ppt
(695 words)
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| | MPLS feature becoming SONET alternative |
| | Another new feature in Cisco's Fast Reroute software is support for Resource Reservation Protocol Hello packets, which are used as a failure-detection mechanism for interfaces other than packet over SONET - such as Fast Ethernet and Gigabit Ethernet. | | | The Multiprotocol Label Switching standard is coming into vogue as a way to provide SONET-like resiliency in packet networks. | | | Riverstone, Atrica and Cisco, however, are enhancing the Fast Reroute in their products to provide IP and Ethernet resiliency that equals or surpasses that of SONET, which can recover in 50 milliseconds. |
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http://www.nwfusion.com/edge/news/2002/1015mpls.html
(695 words)
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| | CEWIT.ORG - Center of Execellence in Wireless and Information Technology |
| | With the rapid growing of the population of mobile users and service requirements, wireless and mobile networks are fast evolving to many applications of data and multimedia from the being primarily voice-centric communications. | | | In the case of mobile packet communications, a significant challenge to the communication system engineer is to implement these functions with minimum computa-tional resources and based on the shortest possible training signal. | | | Sekar is an Associate Professor of Computer Science and the direc-tor of the Center for Cybersecurity at Stony Brook University (SBU). |
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http://www.cewit.org/2004Program.asp
(19922 words)
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| | CRN Infrastructure Making The Switch To Gigabit On The Desktop |
| | Although the price may seem high compared to unmanaged switches, the unit is designed to work well in fast-growing network environments. | | | Switching is accomplished in a store-and-forward method to ensure reliability. | | | This method waits to forward data until a complete packet is received. |
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http://www.crn.com/showArticle.jhtml?articleId=26807165
(1481 words)
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| | Multi-Protocol Label Switching (MPLS) |
| | If a 'label' is added that is the index value pointing to the entry in the forwarding database to which the packet should be forwarded, then the forwarding process ceases to be a lookup and becomes instead a process of what programmers call 'indirection', a very fast process. | | | The premise of MPLS.is that it is expensive to make a forwarding decision at every router between a source and destination. |
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http://www.inetdaemon.com/tutorials/internet/mpls
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| | Broadband Communications Solutions at Broadcom: Semiconductor Technology, Wi-Fi Integrated Circuits, VoIP (Voice Over IP) IC, Enterprise Wireless Networking |
| | Broadcom offers a range of transceivers, media access controllers, switching chips, serializer/deserializer chips, network and security processors, and SystemI/O chips for Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet, SONET and other standard-compliant networking applications. | | | Broadcom's family of Voice over Internet Protocol (VoIP) chips, software and development tools for carrier class gateways, access equipment, terminal adapters, and enterprise and residential telephones are enabling the cost-effective convergence of traditional public switched telephone networks and packet-based networks. | | | Broadcom's family of optical networking chips includes SONET and 10 Gigabit Ethernet transceivers, equalizers, SerDes, DWDM transport processors, both OC-192 transceivers and OC-48 transceivers, and high-speed switch fabric devices. |
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http://www.altimacom.com
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| | Multicast Distributed Switching |
| | If multicast fast switching is disabled on an outgoing interface for a multicast routing table entry, the packet is process level switched for that interface, but may be fast-switched for other interfaces in the outgoing interface list. | | | If multicast fast switching is disabled on an incoming interface for a multicast routing table entry, the packet will be sent at process level for all interfaces in the outgoing interface list. | | | So it is a good idea not to disable fast switching on any interface when MDS is enabled. |
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http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/cc111/mds.htm
(2552 words)
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| | Switching technology |
| | In circuit switching, forwarding tables are hardwired or implemented using fast hardware, making data forwarding at each switch almost instantaneous. | | | Virtual circuit packet switching (VC-switching) is a packet switching technique which merges datagram packet switching and circuit switching to extract both of their advantages. | | | Different from circuit switching, datagram packet switching does not require to establish circuits prior to transmission of data and terminate circuits after the transmission of data. |
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http://www.cs.virginia.edu/~mngroup/projects/mpls/documents/thesis/node8.html
(1545 words)
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| | Definition of Packet |
| | 5:...d [[frame relay]] are two implementations of fast packet switching. | | | 1:...munication]]s, '''fast packet switching''' is a [[packet switching]] technique that increases the [[throug... | | | 3:...ory]], which is a key theoretical underpinning to packet switching. |
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http://www.wordiq.com/search/Packet.html
(717 words)
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| | Paul Baran |
| | Baran co-founded Cabledata Associates, Inc. whose offshoot companies included: Comprint (computer printers); Equatorial Communications Co. (the first V SAT company, now part of CONTEL); Telebit (manufacturer of very high speed modems for impaired dial-up telephone lines); and Packet Technologies (interactive cable TV and a fast packet switching for voice and data on T1 lines). | | | Baran won the 1990 IEEE Alexander Graham Bell Medal For Pioneering in Packet Switching. In 1991, he received the Marconi Prize for the original ideas underlying packet switching and many other communications advances. | | | Baran joined the RAND Corporation in 1959, where he remained until 1968, and where he proposed highly reliable and survivable communication networks using a mesh connection of redundant links. |
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http://www.marconifoundation.org/pages/fellows/Fellows_details/baran.htm
(511 words)
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| | Cisco - How Does Load Balancing Work? |
| | The way in which CEF works is that CEF does the switching of the packet based on the routing table which is being populated by the routing protocols such as EIGRP. | | | For fast-switching—load balancing is on a per-destination basis and the asterisk (*) points to the interface over which the next destination-based flow is sent. | | | For process-switching—load balancing is on a per-packet basis and the asterisk (*) points to the interface over which the next packet is sent. |
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http://www.cisco.com/warp/public/105/46.html
(1193 words)
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| | Themis Computer Introduces Packet-Switching Bus cPCI Single-Board Computer for Network and Telecommunications Applications |
| | Designed to be inserted in the system slot of a cPCI backplane/midplane (cPSB), the USPIIe-cPCI complies with the PICMG 2.0 R3.0 cPCI specifications, PICMG 2.1 R1.0 cPCI Hot Swap Specifications, and meets the requirements set forth in the PICMG 2.16 D0.9.1 cPCI Packet Switching Backplane (PSB) specification. | | | Themis Computer has combined its USPIIe technology with the new CompactPCI (cPCI) standard, including PICMG 2.16 Packet Switching Bus (PSB), to provide Solaris users the next generation cPCI solution for their demanding applications. | | | CompactPCI products provide developers and users an easy path to scale their applications up to the size, performance, maintainability and reliability demands of telecom environments, by supporting Packet Switching Bus, hot-swap and administrative tools, including SNMP and extensive diagnostics. |
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http://www.realtime-info.be/VPR/layout/display/pr.asp?PRID=3171
(1193 words)
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| | SMDS - Switched Multimegabit Data Service |
| | A Switched Multi-megabit Digital Service is a fast packet switching service offered by telephone companies that enable organizations to connect geographically separate local-area networks (LANs) into a single wide-area network (WAN). | | | SMDS is a high-speed, fast packet-switched service provided in a campus, or ring, type arrangement situated within a 50-mile radius. | | | A packet-based network service allowing the creation of high-speed data networks (up to 45 Mbit/s). |
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http://www.auditmypc.com/acronym/SMDS.asp
(341 words)
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| | method.html |
| | Again, Ethernet/Fast Ethernet switches configured in cut-through mode will use cut-through for Fast Ethernet-to-Fast Ethernet switching and for Fast Ethernet-to-Ethernet switching. | | | The test is performed by reading out the counters both before and after a precise number of packets is forwarded through the switch. | | | Here, however, the latency measured is the total delay through three switches, plus the delay for two packet transmissions over the high-speed LAN, as shown in Figure 9c. |
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http://penta.ufrgs.br/gereint/method.html
(341 words)
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| | Designing High Performance Campus Intranets |
| | Regardless of the underlying technology, Cisco's packet-by-packet Layer 3 switching implementations are standards-compliant and operate as a fast router to external devices. | | | With Layer 3 switching in the distribution layer, it is possible to implement the backbone as a single logical network or multiple logical networks as required. | | | Multilayer switching on the Catalyst family of switches can optionally be configured to operate as a Layer 3 switch or a Layer 4 switch. |
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http://www-personal.usyd.edu.au/~ruscook/Tips/CiscoLayer4/DesigningHighPerformanceCampusIntranets.htm
(341 words)
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| | Foundry Networks : About Foundry : News and Events : Press Releases |
| | Rapid Spanning Tree Protocol: Based on the industry standard 802.1w for fast spanning tree convergence, Foundry's Rapid Spanning Tree Protocol (RSTP) capability delivers sub-second convergence, dramatically reducing downtime and packet loss in high- availability networks. | | | Foundry is the only vendor to offer a complete range of Layer 2/3 switching products for the edge, complemented by the industry's strongest backbone Layer 3 switches, Internet routers and Layer 4 through 7 network traffic management switches. | | | Foundry delivers a break-through in high availability features for the Enterprise edge, starting from redundant management modules with instant fail-over, to standards-based Rapid Spanning Tree Protocol with sub-second convergence that eliminates or minimizes packet loss during link failures in Layer 2 environments. |
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http://www.foundrynet.net/about/newsevents/releases/pr1_30_01.html
(823 words)
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| | Teledesic - Summary |
| | Teledesic's space-based network uses fast-packet switching to provide seamless, global coverage. | | | The Teledesic Network consists of terminals that interface between the satellite network and the terrestrial end-users, network gateways and network operations and control systems that perform network management functions, and a space segment that provides the communication links and switching among terminals. | | | Each packet carries the network address of the destination terminal, and each node independently selects the least-delay route to that destination. |
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http://www.spaceandtech.com/spacedata/constellations/teledesic_sum.shtml
(152 words)
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| | Dr. Oliver Welp: Amateur Radio Soundblaster Software Collection |
| | High speed data (such as 9k6 packet radio) will need the connection to the discriminator output of the FM chip, the normal audio output will not work. | | | Sometimes (when fast switching is not required) an audio Vox circuit or the Vox of your radio can do the switching. | | | Packet Net - with tutorial for Flexnet sound card set up |
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http://www.muenster.de/~welp/sb.htm
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| | index.php |
| | Van Caenegem, D. Colle, M. Pickavet, P. Demeester, "Cost evolution of packet switching nodes", published in IST BroadBand Europe conference, papers online (www.bbeurope.org), Bordeaux, France, 12-14 December 2005, pp. | | | Van Quickenborne, F. De Greve, F. De Turck, I. Moerman, P. Demeester, "Cost effective design of aggregation networks for fast moving vehicles", published in Proceedings of the 11th Symposium on Communications and Vehicular Technology in the Benelux, SCVT 2004, Gent, Belgium, 9 November 2004. | | | Van Breusegem, M. De Leenheer, J. Cheyns, F. De Truck, D. Simeonidou, J. O'Mahoney, R. Nejabati, A. anakakai, I. Tomkos, "An OBS architecture for pervasive grid computing", published in WOBS 2004, The Third International Workshop on Optical Burst Switching, co-located with Broadnets 2004, San Jose, California, USA, 25 October 2004. |
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http://www.ibcn.intec.ugent.be/css_design/research/publications/index.php
(13729 words)
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| | ~CELLUCITY - GPRS Cellular Technology! !! |
| | Packet switching is similar to a jigsaw puzzle- the image that the puzzle represents is divided into pieces at the manufacturing factory and put into a plastic bag. | | | The Internet itself is another example of a packet data network, the most famous of many such network types. | | | This is about three times as fast as the data transmission speeds possible over today's fixed telecommunications networks and ten times as fast as current Circuit Switched Data services on GSM networks. |
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http://www.cellucity.co.za/gprs.htm
(3333 words)
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| | ipedia.com: Multi-protocol label switching Article |
| | MPLS is based on the realization that small ATM cells are not needed in the core of modern networks, since modern optical networks (as of 2001) are so fast (at 10 Gbits/second and well beyond) that even full-length 1500 byte packets do not incur significant queuing delays. | | | In computer networking and telecommunications, Multi-Protocol Label Switching (MPLS) is an application of many of the benefits of ATM to IP and other packet-switching technologies, without the cell-switching or signalling-protocol baggage of ATM. | | | The entry point of an MPLS tunnel is called the ingress router, the end point is called the egress router and intermediate routers between the ingress and the egress are called transit routers. |
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http://www.ipedia.com/multi_protocol_label_switching.html
(957 words)
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| | SoftCOM'99 Tutorials & other events |
| | From 1965 to 1989, Dr. Luderer was with ATandT Bell Labs, at last directing research on next generation switch architectures, based on fast packet switching technology on the hardware side and object-oriented design technology on the software side, resulting in some of the earliest demonstration networks for multimedia communication. | | | All these proposals and some others have led to the standardisation effort taking place in the MultiProtocol Label Switching (MPLS) group of the IETF. | | | This problem was the main rationale for the introduction of the Tag Switching by Cisco and of ARIS by IBM. |
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http://www.fesb.hr/SoftCOM/1999/program/tutorials.htm
(957 words)
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| | Ericsson's ENGINE to expand Telia's international carrier network |
| | Ericsson's vision for future networks is a new type of robust, multi- service network infrastructure based on new packet-switching technologies designed for real-time services; a network able to carry large and growing volumes of bit traffic, and to cope with the interconnection requirements of deregulated and competitive telecom environments. | | | Visit Telia at http://www.telia.com About ENGINE Ericsson is a leader in circuit-to-packet solutions. | | | Telia International Carrier has chosen Ericsson's ENGINE Bridgehead Solution to enable the Swedish operator fast deployment of carrier class voice and data services as they expand into the European market. |
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http://www.ericsson.com/press/archive/2000Q4/20001016-0011.html
(760 words)
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