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Configuring MPLS for VPNs

For Layer 2 VPN and Layer 2 circuit interfaces that communicate with other PE Services Routers and provider Services Routers, you must advertise the interface using MPLS. Unless you are using RSVP, this section does not apply to Layer 3 VPNs because MPLS is configured on the interface.

For more information about configuring MPLS, see Multiprotocol Label Switching OverviewJUNOS MPLS Applications Configuration Guide.

To configure MPLS for VPNs:

  1. Navigate to the top of the configuration hierarchy in either the J-Web or CLI configuration editor.
  2. Perform the configuration tasks described in Table 65 on each PE Services Router and provider Services Router interface that communicates with another PE Services Router.
  3. When you have finished configuring the network, commit the configuration.
  4. To verify the configuration, see Verifying a VPN Configuration
  5. Go on to Configuring a BGP Session.

Table 65: Configuring MPLS for VPNs

Task

J-Web Configuration Editor

CLI Configuration Editor

Navigate to the top of the configuration hierarchy and specify the interfaces used for communication between PE routers and between PE routers and provider routers.

(PE and provider Services Routers)
  1. In the configuration editor hierarchy, select Protocols>Mpls>Interface.
  2. In the Interface name box, type interface-name.
  3. Click OK.

From the top of the configuration hierarchy, enter the following command for each interface you want to enable:

edit protocols mpls interface interface-name

For RSVP only, configure an MPLS label-switched path (LSP) to the destination point on the PE router for LSP. During configuration, you specify the IP address of the LSP destination point, which is an address on the remote PE router.

The path name is defined on the source Services Router only and is unique between two routers.

(PE Services Router interface communicating with another PE Services Router)

  1. In the MPLS page, click Add New Entry in the Label switched path group.
  2. Type a path name in the Path name box and an IP address in the To box.
  3. Click OK.
  4. Next to Interface, click Add New Entry.
  5. Type interface-name in the Interface name box.
  6. Click OK.
  7. Repeat Steps 4 through 6 for each interface.
  1. From the top of the configuration hierarchy, enter

    edit protocols mpls label-switched-path path-name

  2. Enter

    set to ip-address

  3. Enter up.
  4. Enter

    interface interface-name

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