DLPI Primitives

Connection-mode Service Primitives

dl_i_pkts_out

number of I PDUs acknowledged by the remote system.

dl_i_pkts_retrans

number of I PDUs re-transmitted.

dl_s_pkts_in

number of S PDUs received.

dl_s_pkts_out

number of S PDUs transmitted.

dl_u_pkts_in

number of U PDUs received.

dl_u_pkts_out

number of U PDUs transmitted.

dl_bad_pkts

number of PDUs with bad control fields received.

dl_retry_cnt

most recent number of times that LLC Type 2 has attempted to force a response from the remote due to a timer expiration. This value is re-set to 0 when a response is received.

dl_max_retry_cnt

maximum value that dl_retry_cnt has attained.

dl_max_retries

maximum allowed number of retries before re-setting the connection. This is sometimes known as the N2 variable.

dl_ack_thresh

maximum number of I PDUs that can be received before an acknowledgment is sent. If this threshold is reached, an acknowledgment is sent and the SEND_ACK timer is restarted.

dl_remote_busy_cnt

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Chapter 2