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A wide area network (WAN) is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits.
Traffic shaping is a bandwidth management technique used on computer networks which delays some or all datagrams to bring them into compliance with a desired traffic profile. Traffic shaping is used to optimize or guarantee performance, improve latency, or increase usable bandwidth for some kinds of packets by delaying other kinds. It is often confused with traffic policing, the distinct but related practice of packet dropping and packet marking.
NetFlow is a feature that was introduced on Cisco routers around 1996 that provides the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data provided by NetFlow, a network administrator can determine things such as the source and destination of traffic, class of service, and the causes of congestion. A typical flow monitoring setup consists of three main components:
A web accelerator is a proxy server that reduces website access time. They can be a self-contained hardware appliance or installable software.
WAN optimization is a collection of techniques for increasing data transfer efficiencies across wide-area networks (WANs). In 2008, the WAN optimization market was estimated to be $1 billion, and was to grow to $4.4 billion by 2014 according to Gartner, a technology research firm. In 2015 Gartner estimated the WAN optimization market to be a $1.1 billion market.
Crescendo Networks, Ltd. was a privately held computer networking company headquartered in Sunnyvale, California with regional offices in EMEA and APAC. Crescendo Networks is not to be confused with Crescendo Communications, Inc. a CDDI/FDDI network equipment manufacturer that Cisco Systems Inc. acquired in 1993.
Packeteer, founded in 1996 by Robert Packer and Brett Galloway, was an I.T. company based in Cupertino, California that was listed on the NASDAQ. Networking appliances focus on Application Traffic Management and optimization for wide area networks. They held at least 40 patents for various network optimization methods. Packeteer was acquired by Blue Coat Systems in 2008.
An application delivery network (ADN) is a suite of technologies that, when deployed together, provide availability, security, visibility, and acceleration for Internet applications such as websites. ADN components provide supporting functionality that enables website content to be delivered to visitors and other users of that website, in a fast, secure, and reliable way.
An application delivery controller (ADC) is a computer network device in a datacenter, often part of an application delivery network (ADN), that helps perform common tasks, such as those done by web accelerators to remove load from the web servers themselves. Many also provide load balancing. ADCs are often placed in the DMZ, between the outer firewall or router and a web farm.
Riverbed Technology, Inc. is an American information technology company. Its products consist of software and hardware focused on network performance monitoring, application performance management, and wide area networks (WANs), including SD-WAN and WAN optimization.
Web Cache Communication Protocol (WCCP) is a Cisco-developed content-routing protocol that provides a mechanism to redirect traffic flows in real-time. It has built-in load balancing, scaling, fault tolerance, and service-assurance (failsafe) mechanisms. Cisco IOS Release 12.1 and later releases allow the use of either Version 1 (WCCPv1) or Version 2 (WCCPv2) of the protocol.
The Avaya Secure Router 4134 in telecommunications and computer networking technologies is a device manufactured by Avaya that combines the functions of WAN Routing, stateful firewall security, Ethernet switching, IP telephony, and Microsoft mediation into one device. In addition to sharing many features with other routers such as VRRP, MPLS, and hot-switchable modules, the SR-4134 also guards against individual circuit failures, has the ability to recover from device failures in less than a second, and instantly restores bandwidth once a connection has been repaired. The system is very energy efficient, and can save the owner as much as 40% on energy total cost of ownership according to testing by the Tolly Group. In July 2011 it was integrated with the Silver Peak WAN optimization appliance to optimize the performance of enterprise voice, video, and unified communications (UC), to ensure that remote users have fast and reliable access to all centralized applications.
A WAN interface card, or "WIC" is a type of specialized network interface controller card (NIC) made by Cisco that allows a network device such as a router to connect and transmit data over a Wide Area Network. A WIC has a built-in channel service data unit (CSU/DSU) interface to connect to a digital circuit and provide error correction and line monitoring.
Juniper J series is a line of enterprise routers designed and manufactured by Juniper Networks. They are modular routers for enterprises running desktops, servers, VoIP, CRM / ERP / SCM applications. The J Series routers are typically deployed at remote offices or branch locations. These Services routers include the J2320 and J2350 for smaller offices, the J4350 for medium-size branches, and the J6350 for large branches or regional offices.
Exinda is a company that provides computer networking hardware for improving the performance of wide area networks (WANs), known as WAN optimization.
Aryaka is a SD-WAN company that provides software-defined network connectivity and application delivery to globally distributed enterprises. Aryaka is headquartered in San Mateo, California with additional offices located in London, United Kingdom, Bengaluru, India, Beijing, China, and Singapore.
SD-WAN is an acronym for software-defined networking (SDN) in a wide area network (WAN). SD-WAN simplifies the management and operation of a WAN by decoupling the networking hardware from its control mechanism. This concept is similar to how software-defined networking implements virtualization technology to improve data center management and operation.
Citrix ADC is a line of networking products owned by Citrix Systems. The products consist of Citrix ADC, an application delivery controller (ADC), NetScaler AppFirewall, an application firewall, NetScaler Unified Gateway, NetScaler Management & Analytics System, and NetScaler SD-WAN, which provides software-defined wide-area networking management. NetScaler was initially developed in 1997 by Michel K Susai and acquired by Citrix in 2005. Citrix consolidated all of its networking products under the NetScaler brand in 2016.
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