Which IOS features are used to avoid Routing loops when dynamic Routing protocols are used between PE and CE in MPLS-VPN networks?
A.
Site Of Origin SOO.
B.
SHAM links with OSPF
C.
BGP cost community
D.
BGP feature allow-as in
E.
RPF Reverse Path forwarding.
F.
Access-list Control in Distance Vector protocol like RIP and EIGRP.