Configuring POS > Creating POS Interfaces

Creating POS Interfaces

In the NMC-RX application, you need to navigate to the module's line interface level to create a POS interface for the module.

To create a POS interface:

1. In the Instance Explorer, select the module on which to create a POS interface.
2. Select the line interface, right-click, select Create, and click POS Interface.

The Create POS Interface dialog box appears.

3. Set the POS interface parameters (Table 78).

 Table 78:  POS Interface Parameters  

 Parameter
 Description

 Name

 Identifies the interface; generated automatically


 Alias

 Description of the interface; 0-15 characters; default: blank


 IfIndex

 Identifies the interface on the particular line interface; generated automatically


 Operational

 Current operational status of the interface


 Administrative

 Desired status of the interface: Up/Down; default: Up


 HDLC Settings

 CRC Checking Enabled

 Cyclical redundancy check (CRC); an error-checking technique in which the frame recipient calculates a remainder by dividing frame contents by a prime binary divisor and compares the calculated remainder to a value stored in the frame by the sending node


 Data Inversion

 Enables inversion of binary 0s and 1s. The purpose of data inversion is to provide ones density, a method for inserting 1s in the data stream. If you enable data inversion on your device, be sure it is also enabled on the destination device.


 MTU

 Maximum transmission unit; largest size allowed for a data packet transmitted over a transmission line; range 4-32763; default 1600


 MRU

 Maximum receive unit; largest size allowed for a data packet received over a transmission line; range 4-32763; default 1600


 CRC Algorithm

 Cyclical redundancy check (CRC); can be set to 16 bit or 32 bit; default 16 bit



 

4. Click OK to save the settings.

A Cisco HDLC, Frame Relay, or PPP interface can now be created on the new POS interface.