Internet Assigned Numbers Authority (IANA)
Address Family Identifiers (AFI):
http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml
Subsequent Address Family Identifier (SAFI):
http://www.iana.org/assignments/safi-namespace
MBGP
EVPN: AFI 25 SAFI 70
VxLAN: UDP порт 4789 (своего номера протокола нет, использует udp = 17)