Network managment Essay Example | Topics and Well Written Essays - 5000 words

Network managment - Essay Exampler down today performance management has become a crucial part of the IT teams role which brings about a host of challenges -- especially for global organizations.MAN Metropolitan force field Network, a data interlock designed for a town or city. In terms of geographic breadth, MANs argon larger than local-area networks (LANs), scarce smaller than wide-area networks ( pales). MANs are usually characterized by very high-speed connections using fiber optical overseas telegram or other digital media. A MAN is optimized for a larger geographical area than is a LAN, ranging from several blocks of buildings to entire cities. MANs can also depend on communications channels of moderate-to-high data rates. A MAN might be owned and operated by a single organization, but it usually impart be used by many individuals and organizations. MANs might also be owned and operated as habitual utilities. They will often provide means for internetworking of local net works. Metropolitan area networks can span up to 50km, devices used are modem and wire/cableSome technologies used for this purpose are ATM, FDDI, and SMDS. These older technologies are in the touch on of being displaced by Ethernet-based MANs (e.g. Metro Ethernet) in most areas. MAN links in the midst of LANs have been build without cables using either microwave, radio, or infra-red laser links.DQDB, Distributed Queue Dual Bus, is the Metropolitan Area Network standard for data communication. It is specified in the IEEE 802.6 standard. Using DQDB, networks can be up to 30 miles long and operate at speeds of 34 to 155 Mbit/s.MAN adopted technologies from both LAN and WAN to serve its purpose. Some legacy technologies used for MAN are ATM, FDDI, DQDB and SMDS. These older technologies are in the process of being displaced by Gigabit Ethernet and 10 Gigabit Ethernet. At the physical level, MAN links between LANs have been built on fibre optical cables or using wireless technologies such as microwave or radio.The Asynchronous Transfer Mode (ATM) composes a