CLI Procedure for Configuring Frame Relay Pass-Through

The following procedure must be performed on each Passport 4400 unit that is to support an attached FRAD.

1. Determine the IfIndex of the physical port to be configured for frame relay services.

CLI> show system IfIndex configured

You will see a table similar to the following:

IfIndex	IfExtType	PPA	IfSlot
1	ethernetCsmacd	0	base
2	propVirtual	0	base
3	other	0	base
4	propVirtual	1	base
150	propMultiplexor	1	base
151	other	1	base
153	propMultiplexor	2	base
154	v35	2	base
155	frameRelayService	2	base




Note: For Passport 4430, 4450, and 4455, the Logical Interface Module (LIM) name for the base module is always limA. The WAN and Expansion modules are numbered lim1 through lim4. For the Passport 4460, the LIM name for the base module is always base, Expansion modules are named exp1, exp2, and the PCMCIA module is named pcmciaExp.

In the above table, Physical Point of Attachment (PPA) and IfSlot indicate the physical location of each port. For example, PPA 1 and IfSlot base refers to Port 1 on the base module, slot A.

Notice that each port may have several associated IfIndexes. To select the IfIndex representing the physical port, look under the IfExtType column, and find the IfIndex associated with propMultiplexor. Using Port 1 on the base module, the physical port IfIndex would be 150.

Note: Passport 4400 units equipped with one or more High-speed Data Modules (HDM) are not restricted to the use of ports on the base module. Additional ports will be listed in the show system IfIndex configured table. Identify the desired port on the HDM by looking for the correct PPA and IfSlot numbers in the table, and select the appropriate IfIndex.

2. Define the physical port parameters for the FR DCE port to match those of the attached FRAD.

Passport 4430/50/55

CLI> define wan port mode

Example:

CLI> define wan port mode 150 dce

Passport 4460

When using a Smart cable with the Passport 4460, you do not need to execute the CLI command define wan port mode to set the DCE/DTE type. After you have configured other parameters on the factory defaulted Passport 4460 and reset the unit (after the save configuration update command), the correct type will be auto-sensed and set for this parameter.

If the above has not occurred, use the following CLI command to set the auto-sense parameter:

CLI> define wan port mode

Example:

CLI> define wan port mode 150 auto

3. Set the master clock source. If you do not want to perform this step, continue on to Step 4.

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, use the CLI command show system hardware. A table similar to the following appears:

RevisionLevel	41
ManufactureRevDate	"2-9-00"
SerialNumber	PED0012478
ModuleID	2
MACAddress	00:e0:7b:0a:46:1a
CPUType	"Passport 4460/MPC860MH-MPC860T"
GenCfgType	passport 4460
ClockSync	supported




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

If your physical mode is set to dce and you want to use the Passport 4460 unit's master clock as the clock source, use the following CLI command:

CLI> define wan port ClockSource

Parameter	Range of Values	Required Actions
<IfIndex>	INTEGER (1..255)	Enter the IfIndex you entered in Step 1.
<ClockSource>	external | backplane	Enter backplane. External is the default.




Example:

CLI> define wan port ClockSource 1 backplane

4. Define the baud rate for the FR DCE port.

CLI> define wan port baudrate

Parameter	Range of Values	Required Actions
<IfIndex>	INTEGER (1..255)	Enter the IfIndex of the physical port as determined in Step 1.
<BaudRate>	INTEGER (300..1920000)	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. The baud rate can be safely set as low as 600.




Example:

CLI> define wan port baudrate 150 64000

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.

If you are running voice traffic (or a combination of voice and LAN traffic) over the FR DCE port, go to Step 5. Otherwise, go to Step 6.

Note: The CLI command define wan port rxQueueSize, is only available in release 4.0.

5. If you are running voice traffic (or a combination of voice and LAN traffic) in your Passport 4400, it may be necessary to adjust the incoming packet buffer (queue size) to achieve optimum voice quality. Enter the following CLI command:

CLI> define wan port rxQueueSize

Parameter	Range of Values	Required Actions
<IfIndex>	INTEGER (1..255)	Enter the IfIndex of the physical port as determined in Step 1.
<RxQueueSize>	INTEGER (10..255)	Enter the size of the incoming queue.




Example:

CLI> define wan port rxQueueSize 150 25

The RxQueueSize parameter should be set to at least 2.5 packets per voice channel in order to prevent lost speech frames. Thus, the default setting of 20 can be used with up to 8 voice channels; the queue size should be increased by the 2.5 multiplier per channel if you have more than 8 voice channels.

If the FR DCE port is handling a combination of voice and LAN traffic, set the queue size to 50 to optimize LAN throughput while accommodating up to 20 voice channels. If the queue size is increased above 50 to accommodate more than 20 voice channels, LAN throughput may be adversely affected.