68.5. How to configure HDSL/SHDSL connections using V.35/G.703 synchronous ports

Physical connections:

Before proceeding with the configuration, make sure you have the following parameters available from your ISP.

ParameterPossible values
AR (Access Rate)2048000 bit/sec
CIR (Committed Information Rate)1024000 bit/sec
MCR (Minimum Cell Rate)1024000 bit/sec
PCR (Peak Cell Rate)1600000 bit/sec
CIR (Committed Information Rate)1024000 bit/sec
TC (Committed rate measurement interval)0.010 sec
LMI (Local Management Interface) standardcisco
DLCI (Data-Link Connection Identifier)20
IP address and Mask81.81.81.81/32

Enter into the Abilis control-program or open the configuration file with the Console configurator and type the following commands.

a dev:esb-1Add an ESB device (e.g. ESB-1).
a res:fr-1 subtype:dlAdd a “Frame Relay over Dedicated Line” resource (e.g. FR-1).
s p fr-1 lowres:sync-1Configure SYNC-1 resource as the lower FR-1 resource.
s p sync-1 clk:ext sp:2048000Configure the clock source type and the Access Rate for the SYNC-1 resource.
a res:ip-4 subtype:dlAdd an “IP over Dedicated Line” resource (e.g. IP-4).
s p ip-4 lowres:fr-1Configure the FR-1 as the lower resource of IP-4.
s p fr-1 lmi:yes std:cisco ar:2048000Configure the LMI standard and the Access Rate.
s p ip-4 enc:fr-ietfConfigure the encapsulation type.
s p ip-4 cir:1024000 bc:10240 be:5760Configure the CIR, BE and BC vaule.
s p ip-4 ipadd:81.81.81.81 mask:255.255.255.255Configure the IP address and the mask.
s p sync-1 descr:HDSL_1Configure the description of the SYNC resource.
s p fr-1 descr:HDSL_1Configure the description of the FR resource.
s p ip-4 descr:HDSL_1Configure the description of the IP resource.
save confSave the configuration.

On a working Abilis, a system restart is required to make the ESB-1 device, the FR-1 and IP-4 resources running.

[Note]Note

The BC (Committed Burst size) and BE (Excess Burst size) parameters must satisfy the following rules:

  • BC = TC*CIR [bit].

  • BE = (PCR-MCR)*TC [bit].

[Tip]Tip

Remember to configure NAT settings.