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Switches

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DEFINITION: Also see repeater, hub, bridge, gateway, and router.In a telecommunications network, a switch is a device that channels incoming data from any of multiple input ports to the specific output port that will take the data toward its intended destination. In the traditional circuit-switched telephone network, one or more switches are used to set up a dedicated though temporary connection or circuit for  … 
Definition continues below.
SwitchesWhite Papers (View All Report Types)
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Frontline LAN Troubleshooting Guide
sponsored by Fluke Networks
WHITE PAPER: This guide addresses the challenges network professionals face when it comes to network troubleshooting and outlines eight key steps every technician should know to aid in successful troubleshooting.
Posted: 27 Jan 2010 | Published: 25 Sep 2008

Fluke Networks

Cisco Delivers Enterprise-Class Next-Generation Acceleration Solution for Disaster Recovery and SAN Extension
sponsored by Cisco Systems, Inc.
WHITE PAPER: Business Continuity and Disaster Recovery (BC/DR) emerges as one of the critical areas of focus as these data centers virtualize, unify, centralize, and scale out their storage resources. This document discusses some of the critical challenges related to the BC/DR solutions and how the Cisco MDS 9000 I/O Accelerator (IOA) addresses each of them.
Posted: 29 Dec 2009 | Published: 29 Dec 2009

Cisco Systems, Inc.

Cisco MDS 9000 Family Virtual SANs Advantages
sponsored by Cisco Systems, Inc.
WHITE PAPER: Today's data centers are faced with many challenges such as consolidation, resources optimization, power, cooling, cost reduction and more. Cisco foresaw these requirements and developed Virtual Storage Area Networks (VSANs) in 2002 to address these issues in the data center.
Posted: 29 Dec 2009 | Published: 29 Dec 2009

Cisco Systems, Inc.

Accelerating IBM z/OS Global Mirror with the Cisco MDS 9000 Family
sponsored by Cisco Systems, Inc.
WHITE PAPER: This document describes how users of IBM z/OS Global Mirror can reduce costs and improve performance with a tightly integrated Cisco® MDS 9000 Family solution.
Posted: 29 Dec 2009 | Published: 29 Dec 2009

Cisco Systems, Inc.

Advancing the Economics of Networking: Juniper Networks Ethernet Switching Solutions Reduce Capital and Operational IT Expenses
sponsored by Juniper Networks, Inc.
WHITE PAPER: Juniper Networks proposes to change the current economic model of networking by delivering a new family of solutions that reduce capital and operational expenses, freeing up IT budget dollars and allowing businesses to invest in innovative technologies that will reduce the cost of doing business while improving the bottom line.
Posted: 17 Jul 2009 | Published: 17 Feb 2009

Juniper Networks, Inc.

Unsung Heroes - How Routing & Switching Keep the Business Going
sponsored by Cisco Systems, Inc.
WHITE PAPER: Routers and switches are the building blocks for all business communications from data to voice and video to wireless access.
Posted: 02 Feb 2009 | Published: 02 Feb 2009

Cisco Systems, Inc.

Router Essentials
sponsored by Global Knowledge
WHITE PAPER: Build a basic foundation of knowledge about routers, the devices that allow you to move packets between networks, by reading this white paper.
Posted: 10 Dec 2008 | Published: 11 Oct 2008

Global Knowledge

Building a Small Office Network: Getting Started
sponsored by Cisco Systems, Inc.
WHITE PAPER: Building a small office network means starting with a foundation of switches and routers. The following guide will help you understand the difference between switches and routers and develop a clear vision for what your network foundation needs.
Posted: 10 Oct 2008 | Published: 10 Oct 2008

Cisco Systems, Inc.

HP BladeSystem c-Class SAN Connectivity Technology Brief
sponsored by PC Connection and HP
WHITE PAPER: This paper describes the hardware and software required to connect HP BladeSystem c--Class server blades to Storage Area Networks1 (SANs) using Fibre Channel (FC) interconnect technology.
Posted: 15 Apr 2008 | Published: 01 Jun 2007

PC Connection and HP

Troubleshooting Switched Environments
sponsored by Fluke Networks
WHITE PAPER: A basic problem in troubleshooting switches is an inability to "see" inside. The white paper, Troubleshooting Switched Environments, describes five fundamental approaches to gain visibility into a switch.
Posted: 21 Aug 2006 | Published: 01 Apr 2004

Fluke Networks
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SWITCHES DEFINITION (continued): …  an exchange between two or more parties. On an Ethernet local area network (LAN), a switch determines from the physical device (Media Access Control or MAC) address in each incoming message frame which output port to forward it to and out of. In a wide area packet-switched network such as the Internet, a switch determines from the IP address in each packet which output port to use for the next part of its trip to the intended destination. In the Open Systems Interconnection (OSI) communications model, a switch performs the Layer 2 or Data-link layer function. That is, it simply looks at each … 
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