Define the Physical Port Parameters for the FR DCE Port to Match Those of the Attached FRAD

1. To define the physical port parameters, select Configure, Physical Interfaces, and Serial.



You will see the Physical Interface (Serial) window:



2. Next to Port Number, use the pull down menu to select the port you want to configure for frame relay. You will see the Physical Port Configuration window:



3. For Passport 4430/50/55, use the pull down menu next to the Mode field to select the physical mode of the WAN port, DCE or DTE.

The physical mode of the port determines if this port will generate clocking (DCE) or accept clocking information (DTE). For connections established across the frame relay network, the physical mode should usually be set to DTE.

For Passport 4460, if you are using a Smart cable with the Passport 4460, you do not need to set the DCE/DTE mode. After you have configured other parameters on the factory defaulted Passport 4460 and reset the unit, the correct DCE/DTE mode will be auto-sensed.

If the above has not occurred, use Configurator to set the auto-sense parameter:

4. Next to Mode, select Auto.
5. Next to Baud Rate, enter the baud rate for the FR DCE port. Make sure the port baud rate matches the baud rate of the attached device. The default line speed on the FR DCE port is 64 Kb/s. This baud rate can be safely set to as low as 600.

Note: Be sure that the line speed of the FR DCE port is set to a lower value than the line speed of the primary WAN link.



6. Next to Protocol Supported, use the pull down menu to select StandardFR.
7. Click Save. A "Command Successful" appears.

Set the Master Clock

This feature is available on Passport 4460 units running software release 4.1.2 or higher. To determine if this feature is available on your Passport 4460 unit, select Attributes, and Unit Hardware. You will see the Unit Hardware window:

If Master Clock is supported on your Passport 4460, Supported will be displayed in the Master Clock field.

1. Set the master clock source. If your physical mode is set to dce and you want to use the Passport 4460 unit's master clock as the clock source, select Configure, System, and Master Clock.



You will see the Master Clock window:



This window displays the current configured interface and allows you to designate the Master Clock source.

2. Use the pull down menu to select the desired clock source.



If you do not want to designate a master clock for the Passport 4460 unit, select Internal. If you wish to designate a master clock for the Passport 4460 unit, select one of the listed ports. As shown in the Master Clock window above, Base, Port 2 is providing the clock source to the backplane. All other ports on the unit have the option of choosing it as their clock source.

3. After you have made your selection, click Save. The Master Clock setting takes effect immediately. A system reset is not required.

If you are running voice or voice and LAN over the PANL link, continue on to Adjust the Incoming Packet Buffer (Voice or Combination Voice and LAN Traffic).