Token ring network and how it works Sunny Classroom https://www.youtube.com/watch?v=p72R2uGglnU Transkript (automatisch erstellt) 0:00 hello and this is sunny welcome back today my topic is a token ring network and how it works token ring was developed in the early 0:12 1980s by IBM for local area network or lab it was in direct competition with Ethernet during the 80s and the 90s there was a great debate about which 0:27 technology should be used for land or lands we all know now Ethan at one however is still interesting to know token ring and how it works 0:41 to understand better why Ethernet has become the local area network standards in a token ray network all hosts all workstations are connected in a rein 0:56 topology the token an empty frame is continuously circulated on the rain an empty token has only three fields start delimiter access control and ain't a 1:12 delimiter the token is like a taxi moving on a loop in a neighborhood if a workstation doesn't have anything to transmit in the passage that talking 1:25 Allah if does has something to transmit it catches the token and attaches the data and sends it back to the rain let's use an example to demonstrate how it 1:39 works suppose workstation a has a message to send it to work station B it attaches the passing talking and attaches is data 1:49 and adds had an information such as frame concho destination address source address FCS and frame status now the empty talking becomes a data or command 2:06 frame the talking is a released back to the ring and then examined by each excessive workstation which checks the destination address against their own 2:19 address and if it passes allow if they do not match when the data frame reaches the destination workstation be copies the frame changes frame status and it in 2:34 releases that talking back to the network frame status provides confirmation that the message has been delivered successfully it is like 2:46 raising a flag telling others data is already delivered and a copied when a talking gets back to the sender workstation a removes the message from 2:59 the token anything releases a new empty talking back to the network the token becomes available again ready to take next message in a token ring Network the 3:14 media access method is called token passing when a workstation wants to trust me the data it should hold the token until it is done if any other 3:27 hosts want to send it data they should wait compared with the Ethernet talking rain has some better features such as one 3:38 token passing access method won't cause collisions as Ethernet well to Tokyo a allows for large frame size than Ethernet three it's a speed was even 3:53 faster than Ethernet when the token rain was introduced but why token Rayfield there might be many reasons but one of the great factors I believe was they 4:05 were too expensive IBM charged five to six times as much as Ethernet for their technology and VA equipments 4:16 [Music]