Lecture #14: Local Area Networks ALOHA Ethernet Token Ring ...
Lecture #14: Local Area Networks ALOHA Ethernet Token Ring ...
Lecture #14: Local Area Networks ALOHA Ethernet Token Ring ...
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<strong>Token</strong> <strong>Ring</strong> frame formats<br />
Data or command frame<br />
SD<br />
8<br />
bits<br />
AC<br />
8<br />
bits<br />
FC<br />
8<br />
bits<br />
SD<br />
8 bits<br />
DA<br />
48<br />
bits<br />
SD: Starting delimiter<br />
AC: Access control<br />
FC: Frame control<br />
AC<br />
8 bits<br />
DA: Destination address<br />
SA: Source address<br />
SA<br />
48<br />
bits<br />
ED<br />
8 bits<br />
PDU from LLC (IEEE 802.2)<br />
up to 18200x8 18200x8<br />
bits<br />
<strong>Token</strong> Abort frame<br />
SD<br />
8 bits<br />
ED<br />
8 bits<br />
CRC<br />
32<br />
bits<br />
PDU: data<br />
CRC: check sum<br />
ED: End delimiter<br />
FS: Frame status<br />
ED<br />
8<br />
bits<br />
FS<br />
8<br />
bits<br />
39
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