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Home » Networking » Computer Networking

How to Networking Your Devices

By Dinesh Thakur

Many of today’s devices rely heavily on access to your office network and the Internet. In this tutorial, we’ll show you how to connect devices to the company network. [Read more…] about How to Networking Your Devices

How to Set Up a Wireless Router Installation & Configuration

By Dinesh Thakur

Setting up and securing a wireless router in your office is something anyone can do. Here, we’ll take you step-by-step through the physical installation and setup of a wireless router. [Read more…] about How to Set Up a Wireless Router Installation & Configuration

What is the difference between Wi-Fi vs. Mobile Broadband

By Dinesh Thakur

Internet access has become a standard feature on most of our mobile devices. But there’s more than one way to connect to the Web with those devices these days. In this article, we’ll help you determine what you need in order to get started with each of these technologies and explain a bit about why you would want to choose one over the other or perhaps go with both. [Read more…] about What is the difference between Wi-Fi vs. Mobile Broadband

What is WRAN?

By Dinesh Thakur

The IEEE 802.22 Working Group started its activities in 2004 with the aim of achieving a regional radio network. The frequency bands used are primarily the digital dividend, that is to say the frequency bands that will be freed when television will fully and finally digital. In France, it is planned for 2010. In the rest of the world, this should be spread between now and 2015. [Read more…] about What is WRAN?

What is WiMAX (Worldwide Interoperability for Microwave Access)?

By Dinesh Thakur

WiMAX (Worldwide Interoperability for Microwave Access) is the result of an initiative launched in 2001 by the WiMAX Alliance. Its aim was to promote the IEEE 802.16 standard by proposing to verify compliance and equipment interoperability. As we shall see, many options have been proposed to achieve communication. [Read more…] about What is WiMAX (Worldwide Interoperability for Microwave Access)?

Type of Wi-Fi equipment

By Dinesh Thakur

A Wi-Fi network is made with many amenities, such as access points, antennas, bridges, controllers, etc. In this section, we will make an overview of the equipment in order to provide some features. [Read more…] about Type of Wi-Fi equipment

What is IEEE 802.11e?

By Dinesh Thakur

The quality of service is essential to ensure the transfer of real time data such as voice or video. Such services require isochronous transfers, that is to say data transfers that enable to vary the time between the different frames of the same transmission. In the case of a video application, for example, over this period, the greater the quality deteriorates, whether audible or visual. To minimize this delay, priority mechanisms were introduced by an extension to the 802.11 standard, called 802.11e. [Read more…] about What is IEEE 802.11e?

What is MIMO (Multiple Input Multiple Output)?

By Dinesh Thakur

MIMO technology (Multiple Input Multiple Output) is not new, but it hits the market that at the end of the first decade of the 2000s due to a very complex implementation. MIMO aims to carry multiple streams in parallel on different antennas but using the same frequency. [Read more…] about What is MIMO (Multiple Input Multiple Output)?

What is IEEE 802.11n?

By Dinesh Thakur

With pre-IEEE 802.11n products, the maximum speed reached in late 2007 is 108 Mbit / s, that is to say double the IEEE 802.11a and 802.11g standards. This flow rate is achieved by increasing the density of transmitted bits. Technological advances are such in the field of radio transmission it is now possible to improve greatly this flow. 802.11n networks offer a potential gross rate of 540 Mbit / s. In fact, the actual flow rate is much lower and is of the order of 100 Mbit/s in the best case. [Read more…] about What is IEEE 802.11n?

What is 802.15 (WPAN) ?

By Dinesh Thakur

The IEEE 802.15 group was set up in March 1999 to reflect on wireless networks with a range of ten meters, or WPAN (Wireless Personal Area Network), with the aim of making connections between different portable one user or multiple users. This type of network can connect a laptop, cell phone, PDA or any other device of this type. Three service groups were defined, A, B and C. [Read more…] about What is 802.15 (WPAN) ?

What is wireless sensor network (WSN)?

By Dinesh Thakur

A sensor array is defined as a set of sensors connected to one another, each sensor being provided with a transceiver. Sensor networks are a new generation networks with specific properties, which do not fall within the conventional architectures. [Read more…] about What is wireless sensor network (WSN)?

What is Wireless mesh network?

By Dinesh Thakur

Mesh networks (meshed networks) are ad-hoc networks in which routing points are immobile. Customers are connected by a wireless network access points and the access points are connected by wireless links. [Read more…] about What is Wireless mesh network?

Ad-Hoc Networks Routing Protocols

By Dinesh Thakur

Routing is the primary element of an ad-hoc network. It takes routing software in each network node to manage the transfer of IP packets. The simplest solution is obviously to have a direct routing, as illustrated in Figure, in which each network station can directly reach another station, without going through an intermediary. The simplest case corresponds to a small cell, with a diameter less than 100 m, as in an 802.11 network in ad-hoc mode. [Read more…] about Ad-Hoc Networks Routing Protocols

What is ad-hoc Network?

By Dinesh Thakur

Another big wireless network category is ad-hoc networks, where the infrastructure is composed as resorts themselves. The latter agreed to play the role of the router to allow the passages of information from one device to another, without these terminals are connected directly. [Read more…] about What is ad-hoc Network?

Types of Wireless Networks

By Dinesh Thakur

Wireless networks are developing due to the flexibility of their interface, which allows a user to change positions while staying connected. Communications between terminals can be made directly or via base stations, called access points, or AP (Access Point). Communication between access points can be wireless or cable. The flow rates of these networks are tens of megabits per second. [Read more…] about Types of Wireless Networks

What is RTP (Real-time Transport Protocol)?

By Dinesh Thakur

The support real-time applications such as video conferencing or telephone speech, is the challenge to the Internet. These applications require qualities Service as conventional Internet protocols can not offer. RTP was designed to try to solve this problem, which is more directly in a multipoint environment, in paying for both the management of real-time administration multipoint session. [Read more…] about What is RTP (Real-time Transport Protocol)?

Routing Algorithms

By Dinesh Thakur

A Routing Algorithm is a method for determining the routing of packets in a node. For each node of a network, the algorithm determines a routing table, which in each destination, matches an output line. The algorithm should lead to a consistent routing, that is to say without loop. This means that you should not route a packet a node to another node that could send back the package. [Read more…] about Routing Algorithms

What is IP forwarding?

By Dinesh Thakur

An Internet environment results from the interconnection of physical networks by routers. Each router is connected directly to two or more networks, hosts are generally connected to a single network, but this is not mandatory. [Read more…] about What is IP forwarding?

Address Resolution Protocol ARP and RARP

By Dinesh Thakur

IP addresses are assigned independently of the hardware addresses of the machines. To send a datagram on the Internet, the network software must convert the IP address into a physical address, used to transmit the frame. [Read more…] about Address Resolution Protocol ARP and RARP

IPv4 and IPv6 Addressing

By Dinesh Thakur

As the Internet is a network of networks, addressing, is particularly important. This section provides an initial overview of the addressing problems through the first generation IP protocol IPv4 and IPv6 new generation. [Read more…] about IPv4 and IPv6 Addressing

Standardization of IP Networks

By Dinesh Thakur

Today, hundreds of major companies market TCP / IP products. It is they who decide the placing on the market of new technology, not the researchers, as originally. The governance of the Internet has been completely redesigned in the late 2000s Authority over the Internet central coordination functions exercised by IANA (Internet Assigned Numbers Authority). In fact, it’s Jon Postel who held that office until his death in 1998. Today it is ICANN performs that function. [Read more…] about Standardization of IP Networks

Internet Architecture

By Dinesh Thakur

In the late 1960s, the US Department of Defense decides to make an extensive network from many small networks, all different, which begin to abound everywhere in North America. We had to find a way for these networks to coexist and give them outdoor visibility, the same for all users. Hence, InterNetwork (interline), abbreviated as the Internet, data this network of networks. [Read more…] about Internet Architecture

Algorithm CR (Constraint-based Routing)

By Dinesh Thakur

The CR (Constraint-based Routing) algorithm is applied when opening the way or if it reopens path is dynamic. [Read more…] about Algorithm CR (Constraint-based Routing)

What is LDP (Label Distribution Protocol)?

By Dinesh Thakur

LDP (Label Distribution Protocol) is the reference distribution protocol which tends to become the most used in MPLS standard. This protocol takes account of unicast and multicast addresses. Routing is explicit and is managed by the output nodes. Exchanges are carried out under the TCP to ensure acceptable quality. [Read more…] about What is LDP (Label Distribution Protocol)?

What is MPLS (MultiProtocol Label-Switching) ?

By Dinesh Thakur

MPLS (MultiProtocol Label-Switching) is a standard proposed by IETF, the Internet standards body for all architectures and high-level protocols (IP, IPX, AppleTalk, etc.). However, his most typical implementation concerns the IP protocol only. [Read more…] about What is MPLS (MultiProtocol Label-Switching) ?

What is IP Switching?

By Dinesh Thakur

IP-switching developed by Ipsilon Networks, Inc. it was the first version of the label-switching. In this architecture, the road is determined by the IP flow. IP-switch nodes replace the routers is working in router mode to trace the path with the first IP packet flow, or by ATM cell switching mode, for all the cells which follow the route path. The first IP packet is routed normally, such as an Internet network. The route is determined by an Internet routing algorithm. [Read more…] about What is IP Switching?

What is MPOA (MultiProtocol Over ATM)?

By Dinesh Thakur

MPOA (MultiProtocol Over ATM) is a protocol developed by the ATM Forum. More complex than NHRP he uses the techniques described in the previous sections by uniting and complementing to achieve IP packet transport or other protocol packets, such as IPX, over an ATM network interconnection. The road can be determined either by a centralized route server solution type, either by a distributed solution using the PNNI or NHRP protocols. [Read more…] about What is MPOA (MultiProtocol Over ATM)?

What is NHRP (Next Hop Resolution Protocol) ?

By Dinesh Thakur

The NHRP (Next Hop Resolution Protocol) comes from the Internet world and is described in RFC 1932. It allows to search the ATM corresponding to an IP address in an NBMA network of several DSL. Specifically, NHRP allows the resolution of an IP address of a workstation on a remote DSL NBMA address of a network (ATM address, frame relay, etc.). [Read more…] about What is NHRP (Next Hop Resolution Protocol) ?

Ethernet in the Local Loop

By Dinesh Thakur

The local loop is to connect users to the first node, router or switch, the operator with whom the customer has a subscription. Broadband solutions is shared between the ATM for fixed links and Ethernet for wireless backhaul. One of the objectives in the Ethernet local loop is replaced by the ATM Ethernet solutions, particularly in the xDSL modems. [Read more…] about Ethernet in the Local Loop

WAN Ethernet Network

By Dinesh Thakur

Ethernet on the WAN aims to transport Ethernet frames over long distances like states, countries, or the whole world, while providing quality service. Its advantages are a very low cost, the possibility of oversizing of the network, highly granular, well known technology and very simple and finally simplified management, since Ethernet is everywhere. You can go very fast in throughput with different levels of 1 and 10 Gbit/s and soon the 100 Gbit/s. The register of difficulties include the lack of reliability, packet loss less controlled and quality of services more difficult to obtain. However, several technologies are currently being developed to address these issues and provide a royal way for the arrival of Ethernet on the WAN. [Read more…] about WAN Ethernet Network

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Dinesh Thakur is a Technology Columinist and founder of Computer Notes.

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