LAN, WAN, MAN, SAN, Schlan -- What's the difference?

November 2004
Management Services;Nov2004, Vol. 48 Issue 11, p24
Academic Journal
This article discusses matter related to Ethernet technology as of November 2004. Apart from being smoother, Ethernet also offers cost savings compared to asynchronous transfer mode and Frame Delay and such by eliminating that double conversion and the expensive routers and POS interfaces that go with it. The conversion also adds to the transmission delay. According to industry analysts Ovum, Ethernet can save 80% over traditional costs. Fibernet recently launched its range of second generation national Ethernet services available from more the 100 Points of Presence in Great Britain and Germany providing coverage for over 90 percent of the British business population. This called TANet Ethersphere and is based upon Ethernet over MPLS, using Resilient Packet Ring technology. It offers point-to-point to multipoint and, importantly, any to any connectivity at speeds from 10 Mbps to Gigabit levels right across Great Britain. Ethernet Wide Area Network customers are so far large organisations so the scale of the networks and the raw capacity needed to deliver the services make it feasible for suppliers to design each network from the fibre optic cables used upwards. Customer networks are based either upon their own individual fibres or on optical wavelengths or transmission capacity in the wide area.


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