Decimal,Name,Description,Reference
1,snmpUDPDomain,SNMP over UDP,[RFC3417]
2,snmpCLNSDomain,SNMP over CLNS,[RFC3417]
3,snmpCONSDomain,SNMP over CONS,[RFC3417]
4,snmpDDPDomain,SNMP over DDP,[RFC3417]
5,snmpIPXDomain,SNMP over IPX,[RFC3417]
6,snmpIeee802Domain,SNMP over IEEE 802,[RFC4789]
7,snmpSSHDomain,SNMP over SSH Transport Model,[RFC5592]
8,snmpTLSTCPDomain,SNMP over TLS via TCP,[RFC6353]
9,snmpDTLSUDPDomain,SNMP over DTLS via UDP,[RFC6353]