A site in a multicast VPN may be a sender, receiver, or both in terms of how multicast traffic is transferred. For example, if Site 1 in GUID-AF96A886-EE6A-450F-92C6-CFDBF2E7545D.html#GUID-AF96A886-EE6A-450F-92C6-CFDBF2E7545D___MPLS_USER_APDX_MULTICASTVPN_20035 is defined as sender-only and the rest of the sites are defined as receiver-only, just one inclusive P-tunnel will exist, from PE-1 to all PEs within multicast VPN-A, or several selective P-tunnels will exist, all of which start from PE-1.