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Topic: Network switch

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In the News (Sun 16 Jun 19)

  Network switch
A network switch is a data switching device that forwards data packets from a source network component or components to a destination network component or components.
A network switch input port may include a protocol processor for converting each incoming packet to a sequence of cells of uniform size, and a traffic manager within the input port for storing the cells in a cell memory until it can forward them through the switch fabric to one of the output ports.
Switches employing both media access control addresses (such as in bridges) or network addresses (such as in routers) provide temporal buffering both when the packets are received, in what are known as `receive queues`, and when they are assigned to transmit ports, in what are known as transmit queues.
www.electronics-manufacturers.com /info/networking-equipment/network-switch.html   (1951 words)

 Network switch - Wikipedia, the free encyclopedia
A switch, on the other hand, isolates ports which means every received packet is sent out only to the port on which the target may be found (one caveat - if the proper port cannot be determined, then the switch will broadcast the packet to all ports).
Also since switches are now so cheap, when building a network from scratch then unless you've got a specific reason to use a hub there is little reason not to use one.
Switches have difficulty in monitoring traffic because each port is isolated until it transmits data, and even then only the sending and receiving ports are connected.
en.wikipedia.org /wiki/Network_switch   (941 words)

 Network bridge - Wikipedia, the free encyclopedia
It is sometimes a network switch, and it works by using bridging.
A repeater is a similar device that connects network segments at the physical layer.
A description of the Network Bridge in Windows XP is given here - it allows a Windows XP system to function as a bridge between the various networking devices connecting to it.
en.wikipedia.org /wiki/Network_bridge   (277 words)

 Network Switch | NetworkDictionary
A network switch is a networking device that connects network segments.
Network switches are capable of inspecting the data packets as they are received, determining the source and destination device of that packet, and forwarding that packet appropriately.
Switches make it difficult to monitor traffic because each port is isolated until it transmits data and even then only the sending and receiving ports are connected.
www.networkdictionary.com /hardware/ns.php   (314 words)

 ipedia.com: Network switch Article   (Site not responding. Last check: )
A switch can connect Ethernet, Token Ring, or other types of network segments together to form a heterogenous network operating at OSI Layer 2.
This point-to-point approach allows the switch to connect multiple pairs of segments at a time allowing more than one computer to transmit data at a time, without causing collisions.
A switch is similar to a hub in that it provides a single broadcast domain, but differs in that each port on a switch is its own collision domain.
www.ipedia.com /network_switch.html   (434 words)

 Define switch - a definition from Whatis.com   (Site not responding. Last check: )
On larger networks, the trip from one switch point to another in the network is called a hop.
Switches are found at the backbone and gateway levels of a network where one network connects with another and at the subnetwork level where data is being forwarded close to its destination or origin.
In the simplest networks, a switch is not required for messages that are sent and received within the network.
whatis.techtarget.com /definition/0,289893,sid9_gci213079,00.html   (678 words)

 Hubs vs. Switches
Ethernet hubs and switches are both used for networking workstations, file servers, printers, and many other components (each of which is referred to as a 'node' of the network).
Switches also run in full duplex mode, which allows data to be sent and received across the network at the same time.
Your network may benefit most from a combination of the two, with critical components directly connected to the switch, and non-critical components on a hub connected to the switch.
meyercomputer.net /Article-Hubs&Switches.htm   (917 words)

 O'Reilly Network -- Basics of Network Segmentation: Switching and Bridging
The congested finance network in the basement facility is interfering with the manufacturing robots' access to the Oracle database servers in the family room.
The ATM switch is a special piece of hardware that works in conjunction with the layer-2 switch they use for the network.
The network isn't perfect yet; our heroine, Momma Spacely, the VP of IT, has added a significant amount of switches to her corporate network to accommodate the company's explosive rate of hiring.
www.oreillynet.com /pub/a/network/2001/03/16/net_2nd_lang.html   (1990 words)

 Newegg.com - Network Switch, Linksys Switch, Wired Network Switch, Netgear Switch, ProCurve Switch, Stackable Switch
Wired network switches are ideally tailored for small and medium-sized businesses that want to optimize their networking capacities.
Network switches have long been generally compatible with 10/100 networks, which are sufficient for most home or small office networks, to bring you error-free data transactions.
Gigabit network switches are available for even faster tranfer rates, and as more computers come standard with gigabit network cards a faster switch may be a quick and easy upgrade to your network that will show immediate results.
www.newegg.com /Store/SubCategory.aspx?SubCategory=30&name=Computer-Hardware-nbsp;-gt;-nbsp;Wired-Networking-nbsp;-gt;-nbsp;Switches   (397 words)

 Network switch - LQWiki
Unlike a hub, which simply broadcasts packets out all of its ports, a switch builds a table of MAC addresses, and sends a packet only through to port the destination is connected to.
In addition, most switches provide full duplex, which means that a network card that is connected directly to a switch (and supports full duplex) can transmit and receive at the same time, effectively doubling the bandwidth.
Some switches allow the option to transmit packets "straight through" (which transmits the packets at once), "fragment free" (which buffers the packet long enough to make sure that it isn't a collision fragment), or "store and forward" (which buffers the entire packet and checks it for errors before forwarding).
wiki.linuxquestions.org /wiki/Switch   (537 words)

 Storage switch growth spurred by new features
Edge switches often appear in the SMB and take on low-end roles in the enterprise to interconnect relatively small workgroup or department-sized networks.
By mounting a blade switch, other blade servers in the chassis can be connected through the blade switch to the rest of the network.
Blade switches typically provide the same suite of features found in edge or stackable switches, but scalability is limited, like edge switches, and they are more expensive to deploy because blade servers are not yet mainstream.
searchstorage.techtarget.com /general/0,295582,sid5_gci1199401,00.html   (2628 words)

 homePCnetwork - Review Belkin Switch
This Belkin switch comes in a package somewhat larger than a cigar box, with a photo of the switch on the front and short explanations about how to use this switch in your network on the back.
Uplink ports are used to connect a switch or hub to another switch, hub or router.
Most switches and hubs either have ports dedicated as uplink ports or a have a switch that turns one port from regular mode (for connection to a computer) to uplink mode.
www.homepcnetwork.com /hdervwbelkinswtchf.htm   (1031 words)

 network switch
GlobalSpec Switches from Network Network switches route packets OSI ports at the between layer 2, which means that (in Ethernet) the network switches decide where incoming packets are -
Network Switch for Computer Networking Definition - Switch (A definition.) Network switches are small devices that join multiple computers together at a low-level layer.
In that a switch is a small device networking, joins multiple computers together at a low-level network protocol layer.
www.info-you-want.com /web/network-switch.php   (281 words)

 Guide to network switch or hub
These were called switches because they were capable of actually switching data from one port directly to another.
And once the packet is exchanged, the switch "knows" how to route future packets to their destinations, since it has now associated an IP address to a MAC (Media Access Control) address, a unique identifier to each network card.
When switches were new and very expensive, they were usually used to connect different hubs together to form larger networks of hubs.
freepctech.com /pc/002/networks003.shtml   (984 words)

 Next-generation switches are coming soon - Network World
The traditional LAN switch is poised for an extreme makeover, and the focus is decidedly on brains, not beauty.
Next-generation switches will not only feature embedded intelligent security functions, such as firewall, intrusion-detection systems (IDS), intrusion-prevention systems (IPS) and SSL VPN, but also the ability to handle a variety of application optimization duties, such as Web acceleration, server load balancing/buffering and WAN optimization.
"Switches and routers of the future will be aware of the conversation flows and not just the individual packets," says John Roese, CTO of Enterasys.
networkworld.com /research/2006/020606-network-switch.html?t5&...   (904 words)

 Howstuffworks "How LAN Switches Work"
Switches allow different nodes (a network connection point, typically a computer) of a network to communicate directly with one another in a smooth and efficient manner.
Switches that provide a separate connection for each node in a company's internal network are called LAN switches.
Essentially, a LAN switch creates a series of instant networks that contain only the two devices communicating with each other at that particular moment.
computer.howstuffworks.com /lan-switch.htm   (228 words)

 Net Switch 2.1: fast switching between network ip profiles settings for mobile users. Multi network manager!
Net Switch is a modern multi network manager, which enables you to change network settings and switch between different networks with one mouse click.
Switching between multiple network configurations is so easy with Net Switch.
This handy utility allows you to set up and save multiple network configurations, each with its own default printer assignment so you don't have to remember or manually type in those numbers every time you move from one environment to another.
www.net-switch.com   (332 words)

 Fiber Optic Network Switch, Optical Switches, Elevate Your Network
Switches can determine ethernet addresses in use on each segment and create a table as signal packets are passed through the switch.
Furthermore, they are versatile enough to connect different network types together as with ethernet and fast ethernet as well as networks of the same type.
Salt and pepper those switches with some management options, and you, not your network, are in the driver's seat.
www.versitron.com /network-switch.htm   (887 words)

 Planning for the Wired Local Area Network
The number of wired devices currently on your network should be used as a baseline for determining the minimum number of ports that must be supported by the network devices.
If cascading switches are used, the servers should be connected together on the main switch and not to a cascaded switch.
The type of switch that is required in a small office depends on the number of network devices that need to be attached to the switch.
www.microsoft.com /technet/solutionaccelerators/smbiz/sitsol/DsgnNwrk_4.mspx   (869 words)

 AnandTech: Network Switch Roundup   (Site not responding. Last check: )
As the cost of networking equipment drops further and further, the accessibility of such equipment to the consumer increases inversely.
While hubs merely pass packets along the wire, switches are intelligent enough to manage the packets they receive in a number of ways.
For example, a packet comes in on port 2 with destination address X and source address Y. The switch immediately knows that the address Y is on port 2 as the packet has come in to that port.
www.anandtech.com /showdoc.html?i=1260   (758 words)

 Don't Fight Your Network, Switch
Be it wired or wireless, building a network can take your small business to new heights in Internet communications, real-time collaboration, webhosting and e-commerce — or simply be setup to connect a series of workstations with a shared printer.
The stackable switches are designed to support the needs of growing small businesses, he said, by offering better performance and scalability through a 4Gbps, dual-ring, stacking architecture that allows you to mix and match to stack up to 192 10/100 ports.
The three ProSafe Smart Switches each feature four Gigabit Ethernet ports for connection to servers or the network backbone and two hot-swappable Small Form-factor Pluggable gigabit interface converter slots that provide fiber connectivity for greater distance and security.
www.smallbusinesscomputing.com /news/article.php/3571861   (685 words)

 Adding Network Switches - H-Sphere Reseller Guide - Positive Software Corporation
Network switches are used in H-Sphere to monitor the traffic load on dedicated servers and provide data to calculate bandwidth charges.
H-Sphere will operate with network interfaces (not physical network switches polled by MRTG servers) to collect statistics from all used ports: which ports are used by which particular dedicated servers.
When you add dedicated server to the system, choose the network switch and its port assigned to the server.
www.psoft.net /HSdocumentation/reseller/ds_switches.html   (281 words)

 The new network switch - Network World
The traditional LAN switch is poised for an extreme makeover, and the focus is decidedly on brains, not beauty.
Next-generation switches will not only feature embedded intelligent security functions, such as firewall, intrusion-detection systems (IDS), intrusion-prevention systems (IPS) and SSL VPN, but also the ability to handle a variety of application optimization duties, such as Web acceleration, server load balancing/buffering and WAN optimization.
"Switches and routers of the future will be aware of the conversation flows and not just the individual packets," says John Roese, CTO of Enterasys.
www.networkworld.com /research/2006/020606-network-switch.html   (916 words)

 Belkin 8 Port Network Switch ( F5D5131-8 ) - Networking
Belkin network switches are ideal for dial-up Internet connections, providing the backbone for sharing e-mail, printers, files, multiplayer games, and hard drives.
Belkin switches are an easy and inexpensive way to start or expand a small network.
Cables for the Belkin 8 Port Network Switch:
www.superwarehouse.com /p.cfm?p=364834&CMP=KAC-PositionTechFeed   (133 words)

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