Network Design

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  • Next-generation WLAN: How IEEE 802.11ac will change your network

    Just five years ago, no one would have described Wi-Fi as a primary access technology but now, as Wi-Fi and cellular architectures deliver security, reliability and robust throughput sufficient to delivery video and multimedia content, wireless LAN (... 

  • Does SDN change everything in network architectures?

    Some experts predict that the network functions virtualization (NFV) and software-defined networking (SDN) mean that physical network equipment will soon be a thing of the past. Not true! While new virtual overlays are required as technology evolves,... 

  • Your next switch: The data center's software-defined future

    The hardware-defined network is still around, but a software-defined switch is coming. Your next switch will include SDN features and will also need to be application-aware and integrated with robust security strategies. This handbook covers everythi... 

  • Harvesting business intelligence with network monitoring tools

    Network technologies and architectures are rapidly changing due to a wide range of innovations from software-defined networking to gigabit wireless. It can be difficult for IT managers to know when to invest. The first step is to investigate the tech... 

  • WAN optimization policy goes deep

    The nature of the branch office is changing. Previously, branch offices were small remote sites with groups of workers that had a single focus, such as sales or customer support. Generally these workers accessed the same narrow set of applications. B... 

  • fog computing (fogging)

    Fog computing, also known as fogging, is a model in which data, processing and applications are concentrated in devices at the network edge rather than existing almost entirely in the cloud. That concentration means that data can be processed locally... 

  • Clos network

    A Clos network is a type of non-blocking, multistage switching architecture that reduces the number of ports required in an interconnected fabric. 

  • jumbo frames

    A jumbo frame is an Ethernet frame with a payload greater than the standard maximum transmission unit (MTU) of 1,500 bytes.  

  • Cisco LISP (Location Identifier Separation Protocol)

    LISP (Location Identifier Separation Protocol) is a routing and addressing architecture developed by Cisco Systems. LISP creates two addresses for each network node: one for its identity and another for its location in the network. 

  • ITU X.225 (ISO 8327)

    ITU X.225 (also known as ISO 8327) is a connection-oriented session layer protocol in the Open Systems Interconnection (OSI) model.  The ITU X.225 protocol specification is a recommendation of the International Telecommunication Union (ITU). 

  • plane (in networking)

    A plane, in a networking context, is one of three integral components of a telecommunications architecture. These three elements -- the data plane, the control plane and the management plane – can be thought of as different areas of operations. Each ... 

  • Google Fiber

    Google Fiber is a project whose goal is to build a fiber optic communications infrastructure. 

  • shortest path bridging

    Shortest path bridging, or 802.1aq, is the IEEE’s specification for enabling multi-pathing in the data center. Shortest path bridging is similar conceptually to its IETF counterpart, Transparent Interconnection of Lots of Links (TRILL). 

  • loose coupling

    Loose coupling is a method of interconnecting the components in a system or network so that those components, also called elements, depend on each other to the least extent practicable... (Continued) 

  • frequency modulation (FM)

    Also see modulation and frequency-shift keying (FSK). 

  • See more Definitions on Network Design
About Network Design

Learn the basic architecture of an enterprise-class network, and ROI and TCO considerations for designing corporate networks. Our resources will help you save money on your network investment while showing you how to get the best performance and efficiency out of your network design. Green networking initiatives will also be covered in this section.