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Unformatted text preview: ATM stands for Asynchronous Transfer Mode. It is another high speed transfer protocol like frame relay. It is the most ridiculously complex protocol in the world. No one knows everything about ATM. It has the multiple standards. The designers wanted ATM to be able to handle everything digital, for example: - Digital voice, Digital data, Broadcasting etc. ATM is now being used as a backbone of the internet. It is not being used for LANs anymore. Replaced by Ethernet. ATM is a fastest protocol in the world because ATM was actually burned onto a logic chip. Some NICs had ATM chips installed on the NICs. It allows LAN workstations directly to ATM hubs and ATM switches and it switches them up to 1.505Mbps. ATM is also the world’s most inefficient protocol in the world. Efficiency = (data)/(control) Information broken down into cells Each cell is a 48 byte, fixed length field 5 bytes of the 48 are control information 48/5 = approx 10 ATM Architecture- UNI (User Network Interface)- SONET l o...
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This note was uploaded on 04/18/2011 for the course DCN 386 taught by Professor Allison during the Spring '10 term at Seneca.
- Spring '10