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L2K (Layer2-Kompella) VPN

The L2K (Layer2 Kompella) VPN, based on the IETF Kompella draft, is implemented by Juniper only. To configure a L2K VPN, the user would perform the following sequence of steps:

  1. Bring up the Add VPN window and selecting Layer 2 Kompella. Then type in a name for the VPN (e.g. L2Kompella_3).
  2. Click on Next to bring up the Common Properties window where you can assign the Route Distinguisher, Route Target Exports, and Route Target Imports for the chosen AS and PEs. The program automatically recommends values based on the chosen AS or you may provide your own.
    Figure 1: For the chosen AS, select RD, RT, and two PEsScreenshot of L2VPN configuration interface using Kompella method, showing AS 65301, RD 65301:65018, and selected devices D_PE_RT02 and E_PE_RT02.
  3. Click on Next to bring up the following window where you would identify PEs and assign the PE facing CE interfaces (in the same manner as described under the L3 (Layer 3) VPN section). The following figure shows the result of the assignment of the interfaces.
    Figure 2: Interfaces have been assigned to the PEsNetwork configuration interface for adding Layer 2 VPN L2Komppella_3 with selected devices D_PE_RT02 and E_PE_RT02, network topology visualization, route target values 65301:65017, and available devices with AS 57301.
  4. Next, click on the Details tab to specify the Encapsulation, Site, Site Identifier. Optionally, you may also specify the Transmit LSP and the Receive LSP. The following figure shows that Site, Site Identifier, and Encapsulation have been assigned.
    Figure 3: Details tab showing the completed assignment of Site, Site ID, and EncapsulationScreenshot of a Layer 2 VPN setup interface using the Kompella method, showing the title Add VPN - L2Kompella_3, PE Selection and Details tabs, Node A and Node Z endpoints with ethernet-vlan encapsulation, interface details, CE devices, site identifiers, Route Distinguisher 65301:65017, protocol l2vpn, LSP configuration fields, and route targets. Navigation buttons labeled Back, Finish, Cancel, Help.

    Note that the Encapsulation drop-down can take on the values as described in the following table.

    Field

    Description

    Encapsulation

    For Juniper, the interface encapsulation types include: aal0, atm-aal5, atm-ccc-vc-mux, atm-cell, atm-cell-port-mode, atm-cell-vc-mode, atm-cell-vp-mode, cisco-hdlc, ethernet, ethernet-vlan, frame, frame-relay, frame-relay-ccc, interworking, and ppp.
  5. Finally, click on Finish to complete the adding of the L2K VPN.
    Figure 4: Newly added L2K VPNNetwork management software interface for managing IP VPNs, focused on Layer 2 Kompella VPNs with details on VPN instance L2KOMPELLA_3, including Node A D_PE_RT02 and Node Z E_PE_RT02, interfaces GE-WAN3/3.100 and GE-WAN3/3.10, and route distinguisher 65301:65017.