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AIX Version 4.3 Communications Programming Concepts

DLCETHER Connection Contention

Dual paths to the same nodes are detected by the Standard Ethernet Data Link Control (DLCETHER) device manager in one of two ways. First, If a call is in progress to a remote node that is also trying to call the local node, the incoming find (remote name) request is treated as if a local listen were outstanding. Second, if a pending local listen has been acquired by a remote node call and the local user issues a call to that remote node after the link session is already active, a result code (DLC_REMOTE_CONN) is returned to the user along with the link station correlator of the attachment already active. This allows the user to relink attachment pointers.


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