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Ethernet, Fast Ethernet, FDDI and Token Ring LAN is often referred to as traditional, Sharing of bandwidth shared LAN is a shared media. To To increase the bandwidth, and often more than one paragraph, each network Network is divided into a network using a router Various sub-sectors of the address must be different broadcast domains increases network Bandwidth on the network can reduce the conflict. Microsoft Paragraph and a new high in the network are unable to meet the LAN extension The bandwidth requirements of network applications, it is "Came the end of the traditional local area network."

In recent years, the exchange process – LAN technologies, LAN network, a shared address Inefficient and adequate network bandwidth and network expansion Are unable to provide a series of difficult problems. It is basically Shared bandwidth local area network to solve the structure Change the bottleneck. Exchange current Ethernet, Token ring exchange, local area network, Ethernet one of the most extensive exchange exchange exchange, such as FDDI and ATM. LAN LAN technology has become mainstream exchange.

Switch features The existing bridge and the network bandwidth to provide improved performance.

Similar to the LAN, because all the data they Link layer (level 2) operation and switches on the bridge, Massachusetts, C — Layer of the device addresses inspection of all network traffic. And Still on the table legs to keep the address a few similar Switches and how to pass filters to determine the flow of a LAN Use the information.

And the other switch leg Using technology to improve the exchange of data input and output media and Installation of the total bandwidth. Common to expect a small delay switch You can talk to each workstation for a small economy Domain of the network, to provide higher bandwidth.

Circuit and packet switched network to packet-switching networks Switches are used primarily for data communications, the new exchange Network, since network. Packet switching and store and Users of the future exchange of text, it relies on a certain length of Is divided for storage of the packets and forward packets, thus, Utilization than circuit switching, than at the message exchange Expansion, a small real-time communications capability. Packets – data As several Luojixindao, ultimately the caller, the access of information between Transfer call to form a party with links to statistical multiplexing In principle, TDM switching and roads, to transmit data packets to achieve For venture capitalists (VC) eulrago.

Packet-switching networks Has the following characteristics:

(1) the number of packets Luojixindao Capacity utilization is high trunk and switching circuits

(2) of the Code of packet switching can be realized with other on-line terminals Order of interoperability between the speed of point;

(3) packet Error detection and correction of circuit-switching transmission capacity is very small It is an error rate

(4) Packet Network Management Switching capabilities.

Packets) and PVC (PVC) two basic Business include SVC (SVC switching. SVC geuipnida telephone circuit is, 2 Data communication terminal when the call for the first circuit Procedures used to establish (VC), and data communications rewirable Procedures used after the removal of VC has been sent. PVC green and two terminals 42 departments of the net provided during the contract period lasting This is no logical connection to the telephone set and rewirable procedures, data Transfer step, SVC is the same.

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Zahid Mahmood is the owner of ccnacertificationguide & ccent. Source of free online ccna & ccent study guide and practice exam questions for the prepration of ccna and ccent certifications exam.

Article Source: ArticlesBase.com – What is the Lan Switches and Packet-switched Network

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