HP UX 11i v2 Networking Software Connection Release Service, Figure 1-20Message Flow: DLS User-InvokedConnection Release

Introduction to DLPI

DLPI Services

Connection Release Service

The connection release service provides for the DLS users or the DLS provider to initiate the connection release. Connection release is an abortive operation and any data in transit (has not been delivered to the DLS user) may be discarded.

DL_DISCONNECT_REQ requests that a connection be released.

DL_DISCONNECT_IND informs the DLS user that a connection has been released. Normally, one DLS user requests disconnection and the DLS provider issues an indication of the ensuing release to the other DLS user, as illustrated by the message flow in Figure 1-20.

Figure 1-20 Message Flow: DLS User-Invoked Connection Release

DL_DISCONNECT request

DL_OK	DL_DISCONNECT
	indication
acknowledge

Figure 1-21 illustrates that when two DLS users independently invoke the connection release service, neither received a

DL_DISCONNECT_IND.

Figure 1-21 Message Flow: Simultaneous DLS User Invoked Connection Release

DL_DISCONNECT
request	DL_DISCONNECT
	request
DL_OK	DL_OK
acknowledge
	acknowledge

Figure 1-22 illustrates that when the DLS provider and the local DLS user simultaneously invoke the connection release service, the remote DLS user receives a DL_DISCONNECT_IND.

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