Juniper Networks Juniper Networks Alcatel-Lucent RFC 6513 described a method to support bidirectional C-flow using "Partial Mesh of MP2MP P-Tunnels". This document describes how partial mesh of MP2MP P-Tunnels can be simulated with Ingress Replication, instead of a real MP2MP tunnel. This enables a Service Provider to use Ingress Replication to offer transparent BIDIR-PIM service to its VPN customers.