IBM SC30-3681-08 Bandwidth Reservation over Frame Relay, Frame Relay Basic Conguration Procedure

Using Frame Relay

vA long-term condition, the Frame Relay protocol will set the transmit rate for the affected PVCs to the calculated minimum information rate.

vFacility or equipment failure or maintenance action, or if the CIR was con®gured as zero, the FR protocol will continue to transmit any queued data for the affected PVCs but will not accept any more outgoing packets from the upper layer protocols until the congestion condition is cleared.

Once a CLLM message for a PVC has been received, if the device does not receive any CLLM messages or BECNs within the Ty timer period or if a frame without a BECN is received, the device will consider the congestion condition cleared and gradually return the PVC to its con®gured transmission rates. If you are using CLLM to control congestion, you must not con®gure DLCI 1007 for any other use.

Bandwidth Reservation over Frame Relay

For information on bandwidth reservation over Frame Relay, refer to Using

Bandwidth Reservation and Priority Queuing and Con®guring and Monitoring

Bandwidth Reservation in Using and Con®guring Features.

Displaying the Frame Relay Con®guration Prompt

To access the Frame Relay con®guration environment:

1.At the OPCON prompt (*), type talk 6.

2.At the con®guration prompt Config>( ), enter the list devices command to see a list of interfaces con®gured on the router.

3.Enter the network command to display the Frame Relay con®guration prompt. The network number is the number of the Frame Relay interface.

Config>network

What is the network number [0] 2

Frame Relay user configuration

FR 2 Config>

4.At the Frame Relay interface con®guration prompt FR( Config>), use the commands discussed in this chapter to con®gure Frame Relay parameters.

Frame Relay Basic Con®guration Procedure

This section outlines the minimum con®guration steps that you are required to perform to get the Frame Relay protocol up and running. If you desire any further con®guration information and explanation, refer to the con®guration commands described in this chapter.

Note: You must restart the router for new con®guration changes to take effect.

vSelect FR management. The FR Local Management Interface (LMI) protocol defaults to ANSI. You have the option of connecting to a network using the Interim LMI (REV1), ANSI T1.617 Annex D management, or ITU-T/CCITT Q.933 Annex A management. Use the enable and set commands to enable and set the required management.

vAdd a PVC. Add any required PVCs that are needed if FR management is disabled or orphan circuits are disabled. If you want to bridge over a FR PVC, or if you want to run APPN over a FR PVC, you also must con®gure that PVC. Use the add permanent-virtual-circuitcommand.

402MRS V3.2 Software User's Guide