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Example: ATM Pseudowire Base Configuration



The following is a list of the hardware and software requirements for this configuration.

  • One ACX Series router

  • Junos OS Release 12.2 or later

Overview of an ATM Pseudowire With Cell Mode Base Configuration

The configuration shown here is the base configuration of an ATM pseudowire with ATM cell-relay encapsulation on an ACX Series router. This configuration is for one provider edge router. To complete the configuration of an ATM pseudowire, you need to repeat this configuration on an other provider edge router in the MPLS network.

Configuring an ATM Pseudowire

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:


To configure an ATM pseudowire with ATM virtual circuit (VC) multiplex encapsulation on CCC circuits, include the atm-ccc-vc-mux statement at the [edit interfaces at-0/0/0 unit 0 encapsulation] hierarchy level instead of the atm-ccc-cell-relay statement shown in this example.

Step-by-Step Procedure

  1. Create an ATM interface on a channelized T1 interface (ct1) and enable full channelization with the no-partition statement. On the ATM interface, set the ATM virtual circuit identifier (VCI), the virtual path identifier (VPI), and set the encapsulation cell mode.

  2. Create a Gigabit Ethernet interface and enable MPLS on that interface. Create the loopback (lo0) interface:

  3. Enable the MPLS and RSVP protocols on the MPLS interface—ge-0/2/0.0:

  4. Configure LDP. If you configure RSVP for a pseudowire, you must also configure LDP:

  5. Configure a point-to-point label-switched path (LSP) and disable constrained-path LSP computation:

  6. Configure OSPF and enable traffic engineering on the MPLS interface—ge-0/2/0.0, and on the loopback (lo0) interface:

  7. Uniquely identify a Layer 2 circuit for the ATM pseudowire: