Ensure that the port is configured on the media module.
Ensure that you are in the context of a serial interface that is defined on the port.
If you are not in the context of a serial interface, use the interface serial command. To view all Serial interfaces that are defined, use the show interfaces serial command.
Use the encapsulation frame-relay command to change the encapsulation to frame relay.
You can optionally specify the encapsulation type: IETF (RFC1490/RFC2427) or non-IETF. The default encapsulation type is IETF.
Note:
Non-IETF encapsulation is compatible with other vendors.
If needed, use the frame-relay lmi commands to change the Local Management Interface (LMI) parameters from their default values, or enter frame-relay traffic-shaping to activate traffic shaping on the frame relay interface.
Optionally, change the queuing mode of the interface.
Enter exit to return to general context.
The prompt returns to:
Gxxx-001(super)#
Enter interface serialif.fr-sub-ifpoint-to-point to create a frame relay sub-interface and enter the context of the interface.
For example:
interface serial 3/1:2.1 point-to-point. Create frame relay sub-interface number 1 on the E1/T1 media module in slot number 3, on port number 1, with channel group number 2
interface serial 4/1:2.3.2 point-to-point. Create frame relay sub-interface number 3 on the E1/T1 media module in slot number 4, on port number 1, with channel group number 2, and with IP interface number 2
interface serial 3/1.2 point-to-point. Create frame relay sub-interface number 2 on the USP media module in slot number 3, on port number 1
interface serial 4/1.2.1 point-to-point. Create frame relay sub-interface number 2 on the USP media module in slot number 4, on port number 1, with IP interface number 1
Note:
Currently only point-to-point frame relay sub-interfaces are supported.
Enter frame-relay interface-dlciDLCI-number to configure a Data Link Connection Identifier (DLCI) for the frame relay sub-interface.
You can optionally specify the encapsulation type: IETF (RFC1490/RFC2427) or non-IETF. The default encapsulation type is IETF.
Note:
Non-IETF encapsulation is compatible with other vendors.
If required, use the frame-relay priority-dlci-group command to configure a Priority DLCI group.
The arguments for this command are the DLCIs you want to assign to high, medium, normal, and low priority traffic, respectively. For example, the command frame-relay priority-dlci-group 17 18 19 assigns DLCI 17 to high priority traffic, DLCI 18 to medium priority traffic, and DLCI 19 to normal and low priority traffic.
Use the ip address command to configure an IP address and subnet mask for the frame relay sub-interface.
Enter exit to return to general context.
The prompt returns to:
Gxxx-001(super)#
If needed, repeat Step 7 through Step 11 to configure additional frame relay sub-interfaces on the same Serial interface.
If needed, repeat Step 2 through Step 12 to configure frame relay encapsulation for other Serial interfaces on the same WAN port.
Test the WAN configuration.
Enter copy running-config startup-config to save the configuration.
