HP UX 11i v2 Networking Software manual Connectionless-mode Services, Connectionless Data Transfer

Introduction to DLPI

DLPI Services

Figure 1-25 Message Flow: DLS Provider-Invoked Connection Reset

DL_RESET indication

DL_RESET response

DL_OK acknowledge

DL_RESET indication

DL_RESET response

DL_OK acknowledge

Figure 1-26 illustrates the message flow for a reset invoked simultaneously by one DLS user and the DLS provider.

Figure 1-26 Message Flow: Simultaneous DLS User & DLS Provider-Invoked Connection Reset

DL_RESET request

	DL_RESET
	indication
	DL_RESET
DL_RESET	response
confirm	DL_OK
	acknowledge

Connectionless-mode Services

The connectionless-mode services enable a DLS user to transfer units of data to peer DLS users without incurring the overhead of establishing and releasing a connection. The connectionless service does not, however, guarantee reliable delivery of data units between peer DLS users (e.g. lack of flow control may cause buffer resource shortages that result in data being discarded).

Once a stream has been initialized via the local management services, it may be used to send and retrieve connectionless data units.

Connectionless Data Transfer

The connectionless data transfer service provides for the exchange of user data (DLSDUs) in either direction or in both directions simultaneously without having to establish a data link connection. Data

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