Local area network special function frames

Details Local area network special function frames Local area network special function frames

G - Physics

06

F

354/233

G06F 1/00 (2006.01) H04L 12/26 (2006.01) H04L 12/417 (2006.01)

Patent

CA 1252574

ABSTRACT OF THE INVENTION In a local area network having a plurality of nodes, wherein the local area network utilizes a token passing scheme for communicating between nodes, each node has an interface apparatus which operates independently of a processor associated with said node. A method of the present invention provide for diagnosing and/or recovering a second node from a first node, the method implemented by the second node includes the steps of waiting to receive a message frame addressed to the second node. If the message frame addressed to the second node is a special function frame, and is in an off-line mode, the type of special function frame is determined to perform the command specified by the type of special function frame. The operation of the second node then returns to the step of waiting to receive a message frame addressed to it.

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