Network Infrastructure

In most cases, the elements of a network infrastructure developed and inherited. If you have a network that are connected to the Internet, for example, certain aspects of the network, such as over the use of TCP / IP over the Internet. Other network elements such as the physical layout of the basic components of the network for the design of the network, when first conceived and then inherited by later versions of the network as it evolves decided. It is rare that an engineer on the possibility of a network from scratch, without already have existing conditions. Almost always, the designer should take some design elements in the network, such as certain applications, operating systems, protocols or hardware components.

The implementation of a network infrastructure is the evaluation, purchase and install the specified components and their installation in the manner prescribed by the design plan. The implementation starts with the engineers of the installation of network infrastructure hardware, including computers, cables and connectivity devices such as hubs, switches and routers, printers and other peripherals. Once the hardware is present, the installation and configuration of engineers operating systems, applications and other software.

Operating systems, the computers are on the main software components of network infrastructure, the other protocols and routines that make network communication possible. In addition to the standard communication protocols for all network operating systems, Microsoft Windows Server 2003 family of products also includes a collection of applications and services, important safety and communication skills to implement, especially in the network. The importance of network infrastructure does not end when the construction of the network is complete, however. The personnel for the maintenance of the network must extend to a thorough knowledge of network infrastructure to the network, upgrades and troubleshooting.

Physical Infrastructure

The physical infrastructure is the network topology, the physical design of the network, together with hardware components such as cables, routers, switches, hubs, servers and workstations. The hardware you choose is in the planning of the physical infrastructure of the network often depends on the elements of the technical infrastructure of the network. For example, should you decide to Ethernet protocol for network data link layer, which is limited to certain types of Ethernet cable connectivity and network components, hubs, routers and switches designed to be limited support for use with Ethernet as well.

For a small network, the physical infrastructure can be very simple computer, a hub and some cables usually all you need. For medium and large networks, however, the physical infrastructure can be extremely complex. Besides a large fleet of computers, a huge system of cables and multiple centers of interconnection network routers or switches may be necessary to require the segments, as well as additional components to support Internet connections, to connect remote client access, wide area connections to other sites, or wireless connectivity.

The hardware used to implement these additional technologies is diverse and always refers to the logical network infrastructure. For example, to connect the Ethernet Local Area Network (LAN) at the headquarters of the company’s Ethernet LAN in a branch, you need a different Data Link Layer Protocol Wide Area Network (WAN) (Point-Point Protocol) , and a different network medium (such as dial-up or a T-1), and must ensure that the hardware and software support to local networks of both WAN technology you choose.

Logical infrastructure

Technological infrastructure of a network consists of software elements that manage to connect and secure the hosts on the network. The technological infrastructure enables communication between computers over paths in the physical topology described. The technological infrastructure of a network consists of two elements of abstract software, such as network protocols and concrete elements, such as certain software products.

For example, when designing a network infrastructure for medium to large, you can choose to use the TCP / IP for network communications and transport layers.

At this stage of planning, is to implement TCP / IP as an abstract element which protocols for the use of any of the various software products can be considered. After deciding on the abstract element must also select the corresponding entry will be used to implement this abstract element. After the decision for TCP / IP, for example, you can use the implementation of TCP / IP on Microsoft Windows operating systems.

In addition to basic communication protocols such as TCP / IP, the abstract elements of the logical infrastructure security technologies such as digital certificates, and includes IP Security (IPSec). Various types of concrete can implement these abstract elements.

Windows Server 2003 includes a number of optional protocols and services, and decide which protocols and services that you also want a part of the logical infrastructure design. In some cases, you can choose to use a product from a third party, rather than a component of the operating system. For example, Windows Server 2003, a software program to your bill, but you can use one of the products, Network Backup software to choose on the market offers additional features that you need.

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