Layer 2 VPN to Layer 2 VPN Connections

As the need to link different Layer 2 services to one another for expanded service offerings grows, Layer 2 MPLS VPN services are increasingly in demand. Junos OS enables you to terminate Layer 2 VPN into Layer 2 VPN (also known as Layer 2 VPN stitching) using the Layer 2 interworking (iw0) interface.

Another way to do this is to use a Tunnel Services PIC to loop packets out and back from the Packet Forwarding Engine (PFE), to link together Layer 2 networks. The Layer 2 interworking software interface avoids the need for the Tunnel Services PIC and overcomes the limitation of bandwidth constraints imposed by the Tunnel Services PIC.