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How to calculate network bandwidth requirements

Figuring out how to calculate bandwidth requirements is vital to ensuring your network runs smoothly, and it's best to get the formula correct from the beginning.

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  • wide area network

    A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).

  • WAN

    A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).

Definitions
  • Network Address Translation (NAT)

    A NAT (Network Address Translation or Network Address Translator) is the virtualization of Internet Protocol (IP) addresses. NAT helps improve security and decrease the number of IP addresses an organization needs.

  • frame relay

    Frame relay is an affordable way to transmit switched-packet data within LANs and WANs.

  • tunneling or port forwarding

    Tunneling is the transmission of data intended for use only within a private, usually corporate network through a public network in such a way that the routing nodes in the public network are unaware that the transmission is part of a private network.

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Telecom Services

Telecommunication carrier services often make up the largest portion of an enterprise's IT budget, so choosing the right services is critical. The options are many and relationships can be complex, especially when a distributed network spans multiple countries or continents. This section presents the latest on the available choices, including purchasing bandwidth like T1 lines, managed services, and emerging services like SaaS and cloud computing, as well as best practices on how to evaluate the services you're receiving and negotiating with telecom providers.

Recent Definitions

  • managed network services

    Managed network services are networking applications, functions and services that enterprises outsource to be remotely operated, monitored and maintained by a managed service provider (MSP).

  • managed service provider (MSP)

    A managed service provider (MSP) is a company that remotely manages a customer's IT infrastructure and/or end-user systems, typically on a proactive basis and under a subscription model.

  • WAN (wide area network)

    A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).

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VPNs/Security

Here you'll find advice and news to help you design, manage and troubleshoot secure VPNs and remote access and to ensure that your WAN is protected from threats that lurk on the Internet or target the applications you're running. Our resources provide information about IPsec and SSL VPN design, setup and configuration, secure remote access, and Web and application security.

Recent Definitions

  • VPN (virtual private network)

    A virtual private network (VPN) is a technology that creates a safe and encrypted connection over a less secure network, such as the internet.

  • Network Address Translation (NAT)

    A NAT (Network Address Translation or Network Address Translator) is the virtualization of Internet Protocol (IP) addresses. NAT helps improve security and decrease the number of IP addresses an organization needs.

  • dynamic multipoint VPN (DMVPN)

    A dynamic multipoint virtual private network (DMVPN) is a secure network that exchanges data between sites without needing to pass traffic through an organization's headquarter VPN server or router.

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WAN Design

Network design is the basis for every WAN and the most crucial part to get right. Here we cover best practices and strategies for WAN design, including considerations for WAN capacity planning and bandwidth management, branch office network design, network disaster recovery planning methods, WWAN and mesh network planning and VPN design.

Recent Definitions

  • bandwidth

    Bandwidth is the capacity of a wired or wireless network communications link to transmit the maximum amount of data from one point to another over a computer network or internet connection in a given amount of time -- usually one second.

  • LPWAN (low-power wide area network)

    Low-power WAN (LPWAN) is a wireless wide area network technology that interconnects low-bandwidth, battery-powered devices with low bit rates over long ranges.

  • disaster recovery plan (DRP)

    A company's disaster recovery policy is enhanced with a documented DR plan that formulates strategies, and outlines preparation work and testing.

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Infrastructure

Equipping your WAN with the right network hardware and technology is essential to providing your users with the connectivity, services and applications they need. Here you'll find resources on WAN network hardware and infrastructure, WAN protocols and IP networking, including IPv6. You'll learn how to build a WAN that meets today's complex networking challenges.

Recent Definitions

  • Multiprotocol Label Switching (MPLS)

    Multiprotocol Label Switching (MPLS) is a protocol-agnostic routing technique designed to speed up and shape traffic flows across enterprise wide area and service provider networks.

  • LPWAN (low-power wide area network)

    Low-power WAN (LPWAN) is a wireless wide area network technology that interconnects low-bandwidth, battery-powered devices with low bit rates over long ranges.

  • WAN (wide area network)

    A wide area network (WAN) is a geographically distributed telecommunications network that interconnects multiple local area networks (LANs).

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Optimization/Application Performance

WAN optimization can help ensure efficient and fast applications delivery on the network. Learn how WAN optimization and application acceleration can help manage traffic on the WAN, how to understand and manage application performance, how to monitor the WAN to prevent application bottlenecks, and how to manage applications and systems remotely.

Recent Definitions

  • application performance monitoring (APM)

    Application performance monitoring (APM) is software designed to help IT administrators ensure that the applications users work with meet performance standards and provide a quality user experience.

  • 4K video resolution

    4K video resolution is high-definition (HD) video that has four times the resolution of 1080p HD video.

  • Space Communications Protocol Specifications (SCPS)

    Space Communications Protocol Specifications (SCPS) are designed to improve communications reliability, error checking, efficiency and performance in ground, manned craft and satellite inter-communications.

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SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • RSA algorithm (Rivest-Shamir-Adleman)

    The RSA algorithm is the basis of a cryptosystem -- a suite of cryptographic algorithms that are used for specific security ...

  • remote access

    Remote access is the ability to access a computer or a network remotely through a network connection.

  • IP Spoofing

    IP spoofing is the crafting of Internet Protocol (IP) packets with a source IP address that has been modified to impersonate ...

SearchHealthIT

SearchDisasterRecovery

  • network disaster recovery plan

    A network disaster recovery plan is a set of procedures designed to prepare an organization to respond to an interruption of ...

  • virtual disaster recovery

    Virtual disaster recovery is a type of DR that typically involves replication and allows a user to fail over to virtualized ...

  • tabletop exercise (TTX)

    A tabletop exercise (TTX) is a disaster preparedness activity that takes participants through the process of dealing with a ...

SearchStorage

  • enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management, protection and data...

  • disk array

    A disk array, also called a storage array, is a data storage system used for block-based storage, file-based storage or object ...

  • optical storage

    Optical storage is any storage type in which data is written and read with a laser. Typically, data is written to optical media, ...

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