Avocent Cyclades-PR2000 Manual De Usuario

The configuration of the PPPCHAR protocol is contained in the menu CONFIG =>INTERFACE =><LINK>
=>ENCAPSULATION =>PPPCHAR.  The parameters for PPPCHAR are a combination of those for PPP and
CHAR.  See the tables describing the PPP and CHAR options for guidance in configuring this protocol.

This data-link protocol is a proprietary alternative to PPP.  It has only one parameter, the

 HDLC Keepalive Interval.

This is the time interval between transmission of Keepalive messages. The receiver of these messages must
send keepalive messages with the same frequency or will be considered inoperative.

FR supports multiple connections over a single link.  Each data link connection (DLC)  has a unique DLCI (data
link connection identifier).  This allows multiple logical  connections to be multiplexed over a single channel.
These are called Permanent Virtual Circuits (PVCs).  The DLCI has only local significance and each end of the
logical connection assigns its own DLCI from the available local numbers.

Traffic Control based on Data Link Connection
Traffic Control as described in chapter 12 can also be performed on a Frame Relay interface for each permanent
virtual connection.  The parameters in the 

Add DLCI menu are used in the same manner as those described in

chapter 12.  More details are available in the CyROS Reference Guide.

STEP ONE
The first step is to set the general Frame Relay parameters, those applying to all DLCs.  This is done in the Frame
Relay Menu.  The parameters are shown in the table below.  Most of these depend on the standards used by the
Frame Relay Network Provider.