Tuesday, March 6, 2012

An Overview On Metro Ethernet part1

Metro Ethernet basically refers to the utilization of technology that is a carrier Ethernet based in an area that is metropolitan. A metropolitan area connects businesses and subscribers in a wide area network to the internet. In other words, it enables branch offices to be interconnected through an intranet.

In essence, it is specifically designed to offer support to high bandwidths bearing fine functions and granularity as one unit of computer networks that are frame based in local area networks. Base stations are capable of communicating by sending data packets on an individual basis. In this case, each base station receives a computer address which basically specifies the source and the destination of every data packet.

This system is common in residential and public networks. Networks which employ the use of this technology are reliable in terms of cost besides enjoying easy implementation into customer based networks. This goes a long way in enhancing its ubiquity.

A typical network comprises of layer two, layer three switches or routers connected through optical fibers or cables. Systems used in metropolitan access networks are used as pure Ethernet. They can also be deployed over Synchronous Digital Hierarchy or Multiple Protocol Label Switching. When compared to the latter technologies, a pure network is much cheaper.

Connections are put in place by the service providers. One side consists of the metropolitan network while the other side is made up of customer equipment. Working just as wired network connections between locations, virtual connections define the paths between the possible interfaces and maintain the computer addresses and the contents of the frame unaltered at the same time. This is to attain layer two connections between the locations.

Government agencies, academic institutions, as well as corporations in big cities all over the world utilize this system in a bid to attain affordable, high speed and secure connectivity. In essence, this is the service employed by many companies, particularly medical groups which in most cases comprise diagnostic centers, clinics and hospitals which have numerous businesses in a single area.

Metro Ethernet forums have been put in place to speed up the implementation of carrier services and networks. Forums comprise of not less than a hundred and fifty top service providers, equipment vendors, dedicated networking firms and exchange carriers. Such forums aim at creating implementation agreements and technical specifications which promote carrier deployment on a global scope.

In a Multiple Protocol Label Switching network, subscribers get access to interfaces on fiber or copper cables. Packets used by customers are transported over multiple protocol label switches with Ethernet as the underlying transport technology. This implies that transmission is two way. Essentially, Label Distribution Protocol signals are utilized for signaling on site to site basis for inner labels. In addition to this, protocol traffic engineering that is resource reserved may also be utilized during outer label network signaling. In a nutshell, these are the basics of Metro Ethernet.

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