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Local Area Network
Local Area Network (LAN) is a network that connects computers and devices in a limited geographic area, such as home, school, computer laboratory, office building, or group of buildings closely located. Each computer or device on the network nodes. The current wired LANs are most likely to be based on Ethernet technology, even if the new standards, such as ITU-T G.hn also a way to create a wired home LAN cables (coaxial cables, telephone lines and power lines).
All devices must understand the network layer (layer 3), because they are handling multiple subnets (different colors). Those inside the library, only 10/100 Mbit / s Ethernet to the user devices and a Gigabit Ethernet central router, could be called "Layer 3 switches" because they have 'Ethernet interfaces and must understand IP. It would be more correct to call the access routers where the router at the top is a distribution router that connects to the Internet and the network of college access routers for customers.
The defining characteristics of LANs, in contrast to WANs (Wide Area Networks), they include more data transfer rates, smaller geographic range, and no need for leased telecommunication lines. Current IEEE 802.3 Ethernet or other LAN technologies operate at speeds up to 10 Gbit / s. This is the speed of data transfer. IEEE has projects investigating the standardization of 40 and 100 Gbit / s.
All devices must understand the network layer (layer 3), because they are handling multiple subnets (different colors). Those inside the library, only 10/100 Mbit / s Ethernet to the user devices and a Gigabit Ethernet central router, could be called "Layer 3 switches" because they have 'Ethernet interfaces and must understand IP. It would be more correct to call the access routers where the router at the top is a distribution router that connects to the Internet and the network of college access routers for customers.
The defining characteristics of LANs, in contrast to WANs (Wide Area Networks), they include more data transfer rates, smaller geographic range, and no need for leased telecommunication lines. Current IEEE 802.3 Ethernet or other LAN technologies operate at speeds up to 10 Gbit / s. This is the speed of data transfer. IEEE has projects investigating the standardization of 40 and 100 Gbit / s.
Personal Area Network
A personal area network (PAN) is a computer network for communication between the computer and peripherals from different technological information of a person. Some examples of devices that are used in the PAN are personal computers, printers, fax machines, phones, PDAs, scanners, and even game consoles. A PAN may include wired and wireless devices. The scope of a PAN typically extends to 10 meters. A PAN is usually built with USB and FireWire, while technologies such as Bluetooth and infrared communication usually form a wireless PAN.
A personal area network (PAN) is a computer network for communication between the computer and peripherals from different technological information of a person. Some examples of devices that are used in the PAN are personal computers, printers, fax machines, phones, PDAs, scanners, and even game consoles. A PAN may include wired and wireless devices. The scope of a PAN typically extends to 10 meters. A PAN is usually built with USB and FireWire, while technologies such as Bluetooth and infrared communication usually form a wireless PAN.
Home Area Network
A home network (HAN) is a local network of housing that is used for communication between digital devices commonly used in the home, usually a small number of personal computers and accessories such as printers and mobile computing devices. An important function is to share Internet access, often a broadband service through a cable or digital subscriber line (DSL) provider. It may also be designated as an office network (OAN).
A home network (HAN) is a local network of housing that is used for communication between digital devices commonly used in the home, usually a small number of personal computers and accessories such as printers and mobile computing devices. An important function is to share Internet access, often a broadband service through a cable or digital subscriber line (DSL) provider. It may also be designated as an office network (OAN).
Wide Area Network
A wide area network (WAN) is a computer network covering a large geographic area like a city, state or intercontinental ranges loops through a communications channel that combines many types of media such as telephone lines, cables, and waves . A WAN often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function in the three lower layers of the OSI reference model: the physical layer, data link layer and network layer.
Campus Network
The campus network is a computer network consisting of interconnected local area networks (LANs) in the defined geographical area. Network devices (switches, routers) and the transmission network (fiber optic, copper plants, Cat5, etc.) are almost wholly owned (dependent Campus / owner: companies, universities, government, etc..)
In the case of a campus-based campus network, the network is likely to combine a series of buildings on campus, for example, academic institutions or departments, the university library and student residences.
In the case of a campus-based campus network, the network is likely to combine a series of buildings on campus, for example, academic institutions or departments, the university library and student residences.
Metropolitan Area Network
A metropolitan area network (MAN) is a large computer networks usually spanning a city or large campus.
Private corporate network
Private enterprise is a network built to connect multiple sites, such as plants, headquarters, remote offices, shops, in order to share computer resources.
Private enterprise is a network built to connect multiple sites, such as plants, headquarters, remote offices, shops, in order to share computer resources.
Virtual Private Network (VPN)
Virtual Private Network (VPN) is a computer network, with connections to the nodes of the transport of open connections or virtual circuits in some larger network (eg Internet), rather than the physical circuit. Data Link layer protocols to the virtual network are said to be through the larger network when appropriate. A common application is secure communications through the public Internet, but a VPN need not have explicit security features, such as authentication or content encryption. For example, the VPN traffic can be distinguished by various groups of users based on the network with strong security features.
VPN may have best performance, or may have a service contract is defined in (SLA) between the VPN client and VPN service provider. Generally, a VPN has a topology more complex than one point to another.
Internetwork
Internetwork
International Network is a connection between two or more private networks using a common technology routing (OSI layer 3) routers. Internet is the aggregation of many networks, so its name was shortened to the Internet.
Backbone Network
Spine or backbone network infrastructure is part of a computer network that connects the different elements of the network, providing an avenue for the exchange of information between different networks or subnets. A backbone can unite various networks in the same building, different buildings in a campus environment, or in large areas. Normally, the ability of the spine is greater than the connected networks.
A large company with many locations can have a backbone that connects all public areas, for example, if a cluster of servers to be consulted by the various departments of a company are in different geographic locations. Parts of the network connections (eg Ethernet, wireless) that provide these departments and is often referred to as the backbone of the network. Network congestion is often seen on the back of the design. Backbone networks should not be confused with the Internet backbone.
Spine or backbone network infrastructure is part of a computer network that connects the different elements of the network, providing an avenue for the exchange of information between different networks or subnets. A backbone can unite various networks in the same building, different buildings in a campus environment, or in large areas. Normally, the ability of the spine is greater than the connected networks.
A large company with many locations can have a backbone that connects all public areas, for example, if a cluster of servers to be consulted by the various departments of a company are in different geographic locations. Parts of the network connections (eg Ethernet, wireless) that provide these departments and is often referred to as the backbone of the network. Network congestion is often seen on the back of the design. Backbone networks should not be confused with the Internet backbone.
Global Area Network
Global Area Network (GAN) is a network that can support mobile communications of an arbitrary number of wireless local area networks, the satellite coverage area, etc. The key challenge will be to send a user's mobile communications coverage area Local to the next. IEEE Project 802, this means a succession of terrestrial wireless LAN.
Internet
The Internet is a global system of interconnected government, academic, business, public and private computer networks. In other words, the Internet is a global interconnection of computers and networks owned by private or public. It is based on networking technology for Internet Protocol Suite. It is the successor to the Advanced Research Projects Agency Network (ARPANET) developed by DARPA in the Department of Defense. The Internet is the backbone of communication underlying the World Wide Web (WWW).
The Internet is a global system of interconnected government, academic, business, public and private computer networks. In other words, the Internet is a global interconnection of computers and networks owned by private or public. It is based on networking technology for Internet Protocol Suite. It is the successor to the Advanced Research Projects Agency Network (ARPANET) developed by DARPA in the Department of Defense. The Internet is the backbone of communication underlying the World Wide Web (WWW).
The participants use the Internet for various methods of several hundred documented and often standardized, protocols compatible with the suite, and Internet Protocol address of the system (IP addresses), managed by the Internet Assigned Numbers Authority and address registries. Service providers and large enterprises to exchange information about the reachability of their address spaces through the Border Gateway Protocol (BGP), forming a redundant global network transmission paths.
Intranets and Extranets
Intranets and extranets are parts or extensions of a computer network, typically a LAN.
An intranet is a set of networks using Internet Protocol IP and tools such as web browsers and file transfer applications, which is under the control of a single administrative entity. The administrative entity closes the intranet to all but specific, authorized users. In most cases, an intranet is the internal network of an organization. A great intranet usually has at least one Internet server to provide users with information of the organization.
An extranet is a network that is limited to a single organization or company and also has limited connections to networks of one or more other usually, but not necessarily, organizations or entities trusted customers of a company can access a portion of its intranet while at the same time customers can not be considered reliable from a security point of view. Technically, an extranet can also be categorized as a CAN, MAN, WAN, or other type of network, an extranet that can not be a single local network, and must have at least one connection to an external network .
Overlay Network
An overlay network is a virtual network that is built on top of another network. Nodes in the overlay are connected by virtual or logical links, each corresponding to a path, perhaps through many physical links in the underlying network.
For example, many peer-to-peer overlay network, because they are organized as nodes in a virtual links operate over the Internet. The Internet was originally built as an overlay on the telephone network.
Overlay networks have existed since the invention of the network when computer systems are connected through telephone lines with a modem, before the existing data network.Today, Internet is the basis for many of the overlapping networks that can build, in order to route messages to specific destinations IP address. For example, distributed hash tables can be used to route messages from node to a specific logical address, an IP address that is known in advance.
Overlay networks have also been proposed as a way to improve Internet routing, such as quality of service guarantees to achieve higher quality media streaming. Previous proposals as IntServ, DiffServ and IP Multicast has not seen wide acceptance largely because they require changes to all routers in the network. On the other hand, an overlay network gradually introduced at the end hosts running the overlay protocol software, without the cooperation of Internet service providers. Overlay has no control over how packets are placed in the underlying network between two overlay nodes, but it can control, for example, the sequence of overlay nodes a message traverses before reaching its destination.
For example, Akamai Technologies is an overlay network that provides reliable delivery, efficient content (a kind of multicast). Academic research includes end multicast system for multicasting and Canopy, RON (Resilient Overlay Network) resistance OverQoS routing for quality of service guarantees, among others.
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