Tuesday, June 7, 2011

Frame Relay, Asynchronous Transfer Protocol and Metropolitan Ethernet

I have reading a lot of questions regarding Frame relay how it works and how it is related to Asynchronous transfer protocol.
Also many people believe that metropolitan Ethernet is usual Ethernet.


So here I post some information and I hope it clears those confusions.




Frame Relay is a WAN (Wide Area Network) protocol which is cheap and easy to implement,
It is a Packet Switching technology which makes efficient use of the bandwidth that the ISP provides.
It uses LMI (Local Management Interface) which basically means that you need to pay only for the link between you and the ISP rather than the traditional (Circuit switching) where you have to pay for the end to end connection.


Asynchronous Transfer Protocol (AST) it is a time multiplexing mechanism that many of the WAN technologies use, It efficiently uses the bandwidth to transfer any data which is ready to be transmitted.
In Synchronous TP it is basically that every network has a time limit in which it can transmit data, and if at all there is no data that particular segment of data for that network will be transmitted with null data. AST uses the empty spot for any other data that is ready to be transmitted and hence optimizes and enhances network performance.


Metropolitan Ethernet is just an extension of Ethernet as we know, ISP's are now-a-days proposing that the connection between branches of offices, campuses and various other remote sites be connected via Ethernet, but fibre Ethernet known as 1000BaseLx....
This not only will make it faster rate of transmission but also in a way enhance security as the two remote sites will be connected via a Layer 2 protocol rather than upper layer complex protocols.
Also the fact that we all know Ethernet is cheaper than satellite, Wireless, Frame Relay and etc