Lab 13 - MPLS VPNs with VPNv4 Route Reflection - pretty straight forward, under the vpnv4 address family in bgp you designate the neighbors you want as Route-Reflector-Clients. Similar to ipv4 route-reflector-clients. To deny IPv4 bgp route exchange, under the address-family ipv4, do a 'no nei a.b.c.d activate' to turn off ipv4.