Cisco Systems Intelligent Switching Frame, Gigabit Ethernet, Inline Power, Internet, IP Routing

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Frame

Glossary

Frame

The basic unit of Ethernet data traffic. An Ethernet frame can vary in size from a minimum length of 64 bytes to a maximum length of 1522 bytes. An Ethernet frame contains the Ethernet destination address, Ethernet source address, 802.1Q/1p fields, and TCP/IP packet.

Gigabit Ethernet

An extension of the Ethernet standard, offering speeds of 1 Gbps. That equals 1,000 Mbps —or 100 times the speed of standard Ethernet. See also Bandwidth, Ethernet, and Fast Ethernet.

Hub

A device that interconnects clients and servers, simply repeating or amplifying the signals between them. Hubs act as wiring “concentrators” in networks based on star topologies, rather than bus topologies, in which computers are daisy-chained together. See also Switch.

Inline Power

Inline power is 48-volt DC power delivered to terminal devices such as IP phones over standard network cables, eliminating the need for separate power sources such as wall outlets.

Internet

A massive global network, interconnecting countless computers and networks worldwide. It is accessible from any computer with a modem or router connection and the appropriate software.

IP

Internet Protocol. A network layer protocol in the TCP/IP stack offering a connec- tionless internetwork service. IP provides features for addressing, type-of-service specification, fragmentation and reassembly, and security.

IP Routing

Unlike static routing, where traffic patterns are established by the network admin- istrator and must be manually adjusted, IP routing is dynamic. When a packet begins its journey through the network, its entire route is not known. Instead,

it progresses through the network one “hop” at a time, and at each interval the network automatically calculates the ideal route to the next stop along the way. This improves network performance and availability.

IP Telephony

The transmission of voice and fax telephone calls over data networks using the Internet Protocol.

IP Video

The transmission of video images over data networks using the Internet Protocol.

LAN

Local-area network. Typically, a network or group of network segments confined to one building or a campus. See also WAN (Wide Area Network).

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Contents Cisco Catalyst Switching Solutions Guide Intelligent Switching for the Evolving Networkfor the evolving network Easing network migration Intelligent switchingadaptation, and expansion Catalyst An agent that precipitates or acceleratesQ Why start with intelligent switching? Q Why change A Because there really isn’t any alternativeanything? A Because of all the changes after thatis QoS? Q How important A QoS is very importantand becoming more so every day Q What about A Security needs to evolve withA Because networks need room to grow Q Why make the move to Gigabit Ethernet?Network Intelligence-from the Core to the Edge Quality of ServiceMedium-Sized Network Small-Business NetworkA Not at all-that’s a key advantage of these switches Q Why use Cisco Catalyst switches to ease network evolution?A Lots of reasons-as lots of people can attest Q But anything this advanced must be difficult to deployA They’re part of the same team, just playing different positions Stackables Cisco CatalystChassis Deployment with Stackables Catalyst Wiring Closet Deployment Scenarios Deployment for IP Telephony and Wireless LAN Access FunctionalityConclusion For more information, contact Cisco, your Cisco reseller, or visitAvailability AVVIDBackbone BandwidthFrame Inline PowerGigabit Ethernet InternetLayer SwitchMulticast Packetor accelerates a reaction, development, or change Catalyst An agent that precipitatesFor more information European Headquarters Corporate HeadquartersAmericas Headquarters Asia Pacific Headquarters
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