Type,Description,Used In,Reference
0,Reserved,,[RFC7296]
1,Encryption Algorithm (ENCR),"(IKE, GIKE_UPDATE, ESP)",[RFC7296][RFC-ietf-ipsecme-g-ikev2-21]
2,Pseudo-random Function (PRF),(IKE),[RFC7296]
3,Integrity Algorithm (INTEG),"(IKE, GIKE_UPDATE, AH, optional in ESP)",[RFC7296][RFC-ietf-ipsecme-g-ikev2-21]
4,Key Exchange Method (KE),"(IKE, optional in AH, ESP)",[RFC7296][RFC9370]
5,Sequence Numbers (SN),"(AH, ESP)",[RFC7296][RFC-ietf-ipsecme-ikev2-rename-esn-04]
6,Additional Key Exchange 1 (ADDKE1),"(optional in IKE, AH, ESP)",[RFC9370]
7,Additional Key Exchange 2 (ADDKE2),"(optional in IKE, AH, ESP)",[RFC9370]
8,Additional Key Exchange 3 (ADDKE3),"(optional in IKE, AH, ESP)",[RFC9370]
9,Additional Key Exchange 4 (ADDKE4),"(optional in IKE, AH, ESP)",[RFC9370]
10,Additional Key Exchange 5 (ADDKE5),"(optional in IKE, AH, ESP)",[RFC9370]
11,Additional Key Exchange 6 (ADDKE6),"(optional in IKE, AH, ESP)",[RFC9370]
12,Additional Key Exchange 7 (ADDKE7),"(optional in IKE, AH, ESP)",[RFC9370]
13,Key Wrap Algorithm (KWA),"(IKE, GIKE_UPDATE)",[RFC-ietf-ipsecme-g-ikev2-21]
14,Group Controller Authentication Method (GCAUTH),(GIKE_UPDATE),[RFC-ietf-ipsecme-g-ikev2-21]
15-240,Unassigned,,
241-255,Reserved for Private Use,,[RFC7296]