Eicon Networks 1530 manual Hdlc Commands

HDLC Commands

ENABLE HDLC FRMR

DISABLE HDLC FRMR

Enables/disables rejection of RR/RNR/REJ frames that have their poll bit set to 0. Certain networks use the HDLC poll bit in a non-standard manner and require special handling of the three frame types:

-RR (receiver ready) frames

-RNR (receiver not ready) frames

-REJ (reject) frames

Normally, when any of these three frames are received as commands with the poll bit set to 0, they are rejected. Non-standard networks may not want these frames to be rejected.

ENABLE HDLC X32DIALOUT

DISABLE HDLC X32DIALOUT

Enables/disables X.32 dialout. Default: Disabled.

SET HDLC T1 checkPointTimer

Defines the Check Point Timer, which specifies how long to wait for a response from the remote device before an attempt is made to determine its status. This parameter should be set to slightly greater than twice the transmission time of the longest frame. Range: 200-9999 milliseconds.

Default: 2900.

SET HDLC T2 AckDelayTimer

Defines the Ack Delay Timer. To optimize communications efficiency, acknowledgments can be piggy-backed onto outgoing frames rather than being sent out on their own. The Ack Delay Timer defines the length of time the device should wait for an outgoing information frame, before sending the acknowledgement by itself. This setting (T2) should always be much less than the Check Point Timer (T1); otherwise, the remote device may time out and try to recover before the acknowledgment is received.

Range: 0-25000.

Default: 200.

SET HDLC T3 IdleProbeTimer

Defines the Idle Probe Timer, which specifies how long the link should remain idle before the Eicon 1530 sends an RR (Receiver Ready) frame, with a P bit set, to the remote device. This is done in order to determine its status. The remote device, if still functioning, will respond using an RR frame with the F bit set.

Range: 0-100000 milliseconds.

Default: 15000.

Command Line Interface 129