Configuring Interfaces Participating in a VPN

Configure IPv4.

(interfaces on all Services Routers)

(See the interface naming conventions in the J-series Services Router Basic LAN and WAN Access Configuration Guide.)

1. In the J-Web interface, select Configuration>View and Edit>Edit Configuration.
2. Next to Interfaces, click Configure or Edit.
3. In the Interface name column, select the interface.
4. For Layer 2 VPNs on the interface facing a CE router, select an encapsulation type, such as ethernet-ccc from the Encapsulation list. For Fast Ethernet interfaces, you also must select Vlan tagging from the Vlan tag mode list.
5. In the Interface unit number column, select the logical interface.
6. In the Family group, select Inet and click Edit.
7. Next to Address, click Add new entry
8. In the Source box, type the IPv4 address—for example, 10.49.102.1/30. For a loopback address on a Layer 2 configuration, select Primary.
9. Click OK to return to the Unit page.

• For all interfaces except loopback, and a Layer 2 VPN interface facing a CE router:

  From the [edit] hierarchy level, enter

  edit interfaces interface-name unit logical_interface family inet address ipv4_address

• For a loopback address on a Layer 2 configuration:

  From the [edit] hierarchy level, enter

  edit interfaces lo0 unit logical_interfacefamily inet address ipv4_address primary

• For a Layer 2 VPN interface facing a CE router:

  From the [edit] hierarchy level, enter

  set interfacesinterface-name vlan-tagging encapsulation vlan-ccc unit logical_interface encapsulation vlan-ccc vlan-id id-number

Configure the MPLS address family.

(for interfaces on a PE or provider Services Router that communicate with a PE or provider Services Router only, and not for loopback addresses)

On the Unit page, select Mpls in the Family group.

At the [edit interfaces interface] level, enter

set unit logical_interfacefamily mpls

For Layer 2 VPNs and circuits, configure encapsulation.

If multiple logical units are configured, the encapsulation type is needed at the interface level only. It is always required at the unit level.

(for interfaces on a PE Services Router that communicate with a CE Services Router)

1. On the Unit page, select an encapsulation type from the Encapsulation list.
2. Click OK.
3. On the Interface page, select an encapsulation type from the Encapsulation list.
4. Click OK until you see the Configuration Interfaces page displaying all interfaces on the router.

1. At the [edit interfaces interface] level, enter

   set encapsulation encapsulation_type

2. Enter

   set unit logical_interfaceencapsulation encapsulation_type