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Network Testing and Emulation Solutions

Generating Traffic for DSLAM Testing

Goal: Set up and run traffic to a DSLAM system as shown in the CT570 product description.

Please refer to the diagram in the CT570 link above. In this test scenario, the LANforge-FIRE Core is one interface on a LANforge system. The LANforge-FIRE Edge is another interface on the same LANforge system. The LF Core interface is connected to the upstream DSLAM interface either directly or through a switch. The CPEs are connected to a multi-port VLAN switch which has a VLAN trunk that is connected to the LF Edge. Traffic is sent between the LF Core and the LF Edge to achieve end-to-end network traffic testing of the DSLAM system.

  1. Connect one LANforge-FIRE interface to the DSLAM upstream internet connection. This is the LF Core part of the diagram mentioned above.
  2. Set up the LANforge port so that it has a valid IP address and IP mask.
    1. Go to the Port Manager screenshot
    2. Modify the port connected to the DSLAM. Set a valid network IP address and IP mask. screenshot
    3. Verify the port configuration screenshot

    For more information see LANforge User's Guide: Ports (Interfaces)

  3. Set up virtual interfaces.
    1. On the Port Mgr tab, select the port that will connect to the multi-port switch and will also be your VLAN trunk. This is the LF Edge part of the diagram.
    2. Click the Create button: screenshot
      1. Select the 802.1Q-VLAN virtual interface type
      2. The VLAN ID should correspond to your multi-port switch VLAN configuration
      3. Enter Quantity (number of virtual interfaces to be created)
      4. Enter the appropriate IP address and IP mask
      5. Click Apply to create the virtual interfaces
    3. Verify that the virtual interfaces are created and have the correct IP assignments screenshot

    For more information see LANforge User's Guide: Creating & Deleting Virtual Interfaces

  4. Create Layer-3 connections.
    1. Go to the Layer-3 tab screenshot
    2. Click the Create button screenshot
      1. Fill in a connection name, select a connection type and set the report timer
      2. Make endpoint A the DSLAM upstream port or LF Core
      3. Make endpoint B the CPE downstream port or LF Edge
      4. You can make the TX/RX rates asymmetric for the connection to simulate how the connection would be used in a real-world scenario. Here we have about 5Mbps downstream (DSLAM to CPE) and 1Mbps upstream (CPE to DSLAM).
      5. Click Apply to create the connection
    3. Create multiple connections screenshot
      1. Click Batch-Create (located in the Layer-3 connection's Create/Modify window) to create four additional connections.
      2. Set Quantity to 4, Port Increment A to 0.
      3. Click Apply.

    For more information see LANforge User's Guide: Layer-3 Endpoints (FIRE)

  5. Run traffic.
    1. Select the connections you want to start screenshot
    2. Click the Start button screenshot

    For more information see LANforge User's Guide: Layer-3 Endpoints (FIRE)

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