BGP Layer 3 VPN over IP-IP Tunnel

Junos OS support BGP Layer 3 VPN over IP over IP (IP-IP) tunnels to create a new transport service. IP-IP tunnels terminate into service-layer VRF, so you do not need to use a service label. This feature allows interoperability between the new VRF and traditional VRF, so both types of overlays can coexist in your network. You can use this feature to transition from an MPLS network to an IP fabric core network and to protect your network from distributed denial-of-service (DDoS) attacks. To use VPN over an IP-IP tunnel, configure the tunnel-attribute statement at the [edit policy-options policy-statement policy-name term term-name then] or [edit policy-options policy-statement policy-name then] hierarchy level. To configure the receiver to program the dynamic tunnel using the tunnel attribute, use the extended-nexthop-tunnel statement at the [edit routing-instances routing-instance-name protocols bgp group group-name family (inet-vpn | inet6-vpn) unicast] hierarchy level.