Configuring Interfaces for Layer 2 VPNs (CLI Procedure)
Configuring the device interfaces that participate in the VPN is similar to configuring them for other uses, with a few requirements for the VPN. Perform the following tasks for each interface involved in the VPN, except Layer 3 loopback interfaces, which do not require other configuration.
To configure an interface for an MPLS VPN:
- Configure IPv4 address and loopback address on all of
the interfaces of the provider edge (PE) and provider (P) devices,
excluding the Layer 2 VPN interfaces facing a customer edge (CE) device:[edit interfaces]user@host# set interface-name unit logical-unit-number family inet address ipv4_address
user@host# set lo0 unit logical-unit-number family inet address ipv4_address primary - Enable MPLS address family on all the PE and P device
interfaces, excluding the loopback interfaces and the CE-facing Layer
2 VPN interfaces.[edit interfaces]user@host# set interface-name unit logical-unit-number family mpls
- For CE-facing Layer 2 VPN interfaces, enable the reception
and transmission of 802.1Q VLAN-tagged frames on the interface.[edit interfaces]user@host# set interfaces interface-name vlan-tagging encapsulation vlan-ccc unit logical-unit-number encapsulation vlan-ccc vlan-id vlan-id-number
- Configure the physical and logical link-layer encapsulation
type on all the PE devices that communicate with the CE devices on
Layer 2 VPNs and Layer 2 circuits.[edit interfaces]user@host# set interface-name encapsulation encapsulation-typeuser@host# set interface-name unit logical-unit-number encapsulation encapsulation-type
- Commit the configuration if you are finished configuring
the device.[edit]user@host# commit