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VPLS-LDP VPN

The VPLS-LDP VPN, based on the IETF Lasserre/Kompella draft, is implemented by Cisco and all other vendors except Juniper. To configure a VPLS-LDP VPN, perform the following steps:

  1. First identify, for the VPLS-LDP, a set of PEs with available PE-facing-CE interfaces that can be assigned as VPLS attachment circuits.
  2. Next, bring up the Add VPN window and select VPLS-LDP VPN. In this example, we will configure a VPLS instance named VPLS-LDP0.
    Figure 1: Creating a VPLS-LDP VPNConfiguration window for adding a VPN with fields for customer selection, VPN type VPLS-LDP, VPN name customer_1, VPLS ID 11307, and buttons for navigation and help.
  3. Click on Next to take you to the screen to specify a VCID and to select the PEs for the VPLS instance, as shown in the following screen. If you prefer, you may select some or all the PEs in the PE Selection tab in the next screen, as described in the next step. Click on Next to continue.
    Figure 2: Select PEs and Specify a VCID"VPN configuration interface showing step 2 of 5 in Add VPN wizard. VPN Name: customer_1, Type: Provider Edge PE. Available locations include Berlin and Paris. Selected locations include Dublin and Amsterdam. Navigation buttons: Back, Next, Close."
  4. As described in the previous step, you may select PEs in the PE Selection tab, as shown in the following screen. If you have already selected all the PEs in the previous step, then click on the Details tab to continue.
    Figure 3: Additional PEs may be select in the PE Selection tabNetwork configuration interface for setting up VPN using VPLS with LDP. Central cloud AS65534 connects PE devices. Selected objects GV1, GV2, V_C1 have no interface. Available devices EP_R9, ESV_1, E_V1, E_V2, E_V3. Properties section for configuration. Finish, Cancel, and Help buttons available.
  5. Next, you are ready to configure the PE-facing-CE attachment circuits; this includes specifying the interface and circuit ID, bandwidth, and encapsulation.
    Figure 4: Configure VPLS-LDP DetailsNetwork configuration interface for setting up a VPLS using LDP. Features add VPN VPLS-LDP0 title, PE Selection tab with nodes GV1, GV2, V_C1, VCID 137, interfaces FastEthernet0/2:137, FastEthernet0/3:137, encapsulation dot1qtrunk, bandwidth 100M, and Details section for node V_C1 configuration. Includes Back, Finish, Cancel, and Help buttons.

    The encapsulation types for various vendors are:

    • Cisco: dot1qaccess, dot1qtunnel, dot1qtrunk.

    • Foundry: tagged, untagged.

    • Tellabs, Riverstone: tagged, untagged, q-in-q.

    The following figures show how an interface is assigned: First, click on the magnifying glass next to Interfaces and choose Add. Then in the Select Interface window, pick an available interface. Finally, type in the VCID for the interface

    Figure 5: Select an interfaceGraphical user interface for configuring network interfaces in a tool like Cisco Packet Tracer. Shows interface list and properties.
    Figure 6: Assign the Circuit ID to the interfaceDialog box titled Input prompts user to enter circuit unit number for FastEthernet0/1 with 137 entered. Buttons OK and Cancel are present.
  6. Next, you will specify, in turn, each remote peer and the transmit LSP used to reach the peer. Click on the magnifying glass next to Remote Peers to bring up the Add Remote Peer window, where you can choose the remote peer and the transmit LSP from the dropdown selection menus.
    Figure 7: Configure PE peersDialog box titled Add Remote Peer with GV2 selected for Remote and LSP_81 for Transmit LSP. Buttons: Add and Cancel.
  7. The following figure shows the assignment details completed for our VPLS instance, VPLS-LDP0. Click on Finish to add the VPLS instance to the model.
    Figure 8: VPLS-LDP instance details configuredNetwork configuration interface for setting up a VPLS VPN with LDP. Shows nodes GV1, GV2, V_C1, their details, and remote peers. Action buttons: Back, Finish, Cancel, Help.