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Example: Configuring Fixed Classification on an ATM IMA Pseudowire


This example shows the configuration of fixed classification on an ATM IMA pseudowire. Fixed classification is configured on the logical interface (unit) of the ATM IMA pseudowire. The software assigns the fixed classification to packets on the basis of the fixed classification parameters associated with the logical interface on which the ATM cells are received.


This example is not applicable on ACX5048 and ACX5096 routers.


This example uses the following hardware and software components:


In this example, the configured forwarding class fc-1 is applied to all packets received on the ingress logical interface at-0/0/16 unit 0. The fixed classification classifies all traffic on the logical interface unit zero (0) to queue-num 1.


The following example requires you to navigate various levels in the configuration hierarchy. For information about navigating the CLI, see Using the CLI Editor in Configuration Mode in the CLI User Guide.

To configure fixed classification on an ATM IMA Pseudowire, perform these tasks:

CLI Quick Configuration

To quickly configure this example, copy the following commands, paste them in 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:

Configuring a Forwarding Class

Step-by-Step Procedure

To define a forwarding class, which is applied to the ingress logical interface:

  1. In configuration mode, go to the following hierarchy level:
  2. Define the forwarding class to apply to the input logical interface:

Applying the Forwarding Class

Step-by-Step Procedure

To apply the forwarding class to the logical ATM IMA pseudowire:

  1. Specify the ATM IMA interface on which to include the forwarding class:
  2. Configure the logical interface:
  3. Apply the previously configured forwarding class to the logical interface:


From configuration mode, confirm your configuration by entering the show command. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

In the following example, all packets coming into the router from the at-0/0/16 unit 0 interface are assigned to the fc-1 forwarding class:

After you have completed the configuration, enter the commit command from configuration mode.