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Example: Configuring Multilink Frame Relay FRF.15

Requirements

Before you begin, you should have two MX Series 3D Universal Edge Routers (MX240, MX480, or MX960 routers) configured with at least two serial interfaces that communicate over serial links.

Overview

In this example, you aggregate two T1 links to create the MLFR FRF.15 bundle on two MX Series routers, R0 and R1, and set the interface to lsq-0/0/0. You configure a logical unit on the lsq-0/0/0 interface and set the family type to inet with address 10.0.0.4/24. Then you configure an IP address for the multilink bundle on the unit level of the interface.

You define the multilink bundle as an MLFR FRF.15 bundle by specifying the MLFR end-to-end encapsulation type. You specify the names of the constituent links to be added to the multilink bundle as t1-2/0/0 and t1-2/0/1 and set the encapsulation type to frame-relay. You then define R0 as a DCE device and R1 as a DTE device. You set the DLCI value to 100 (range is from 16 through 1022). Finally, you set the multilink bundle to lsq-0/0/0.0.

Configuration

CLI Quick Configuration

To quickly configure this example, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, and then copy and paste the commands into the CLI at the [edit] hierarchy level.

Step-by-Step Procedure

1. Create an interface on both the routers.
   [edit]user@host# edit interfaces lsq-0/0/0 unit 0
2. Set a logical unit on the interface and define the family type for the routers R0 and R1.
   [edit interfaces lsq-0/0/0 unit 0]user@host# set family inet address 10.0.0.4/24user@host# set family inet address 10.0.0.5/24
3. Define the multilink bundle as an MLFR FRF.15 bundle.
   [edit interfaces lsq-0/0/0 unit 0]user@host# set encapsulation multilink-frame-relay-end-to-end
4. Specify the names of the constituent links to be added to the multilink bundle.
   [edit interfaces]user@host# set t1-2/0/0 encapsulation frame-relayuser@host# set t1-2/0/1 encapsulation frame-relay
5. Define the router R0 as a DCE device.
   [edit interfaces]user@host# edit lsq-0/0/0user@host# set dce
6. Specify the DLCI as well as the multilink bundle to which the interface is to be added.
   [edit interfaces lsq-0/0/0]user@host# set unit 0 dlci 100 family mlfr-end-to-end bundle lsq-0/0/0.0

Results

From configuration mode, confirm your configuration by entering the show interfaces lsq-0/0/0, show interfaces t1-2/0/0, and show interfaces t1-2/0/1 commands for R0 and R1. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the router, enter commit from configuration mode.

Verification

Confirm that the configuration is working properly:

• Verifying the MLFR FRF.15 Configuration

Verifying the MLFR FRF.15 Configuration

Purpose

Verify the MLFR FRF.15 configuration.

Action

From operational mode, enter the show interfaces command.