CSMA/CD once channel captured, can only one or multiple frames be sent before other stations try tra

Posted by Bryce Thomas on Stack Overflow See other posts from Stack Overflow or by Bryce Thomas
Published on 2010-03-27T11:36:07Z Indexed on 2010/03/27 11:43 UTC
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capture

Hi there,

I have a question regarding CSMA/CD in the IEEE 802.3 LAN standard. I'm trying to understand the behavior of CSMA/CD after a station has captured the channel. Say station A has captured the channel and has an infinite supply of frames it is sending. Also assume that station B has something it wants to send. Now, if I understand correctly, station B senses the line and sees that station A has captured the channel/is transmitting. My question is, does station B see the channel as being captured for the duration of ALL of the frames that station A sends (an infinite period of time), or does station B only consider the channel captured for the first frame it sees A send, after which B goes ahead and transmits its own frame (which will collide with one of the remaining frames still coming from A)?

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