There isn't a public MIB I know covering MLA or MLT stuff. You have to use the private MIB. I can see on your MIB OID that you using VSP / Fabric Engine.
here the right private MIB tree
Name: rcMltEntry
Type: OBJECT-TYPE
OID: 1.3.6.1.4.1.2272.1.17.10.1
1: rcMltId - INTEGER(2 - integer (32 bit))
2: rcMltName - DisplayString(4 - octets)
3: rcMltPortMembers - PortSet(4 - octets)
4: rcMltPortType - INTEGER(2 - integer (32 bit))
5: rcMltNumVlanIds - Integer32(2 - integer (32 bit))
6: rcMltVlanIds - IdList(4 - octets)
7: rcMltRowStatus - RowStatus(2 - integer (32 bit))
8: rcMltEnable - TruthValue(2 - integer (32 bit))
9: rcMltLoadBalance - TruthValue(2 - integer (32 bit))
10: rcMltDistributionAlgorithm - INTEGER(2 - integer (32 bit))
11: rcMltIfIndex - InterfaceIndex(2 - integer (32 bit))
12: rcMltMltType - INTEGER(2 - integer (32 bit))
13: rcMltSmltId - INTEGER(2 - integer (32 bit))
14: rcMltRunningType - INTEGER(2 - integer (32 bit))
15: rcMltSvlanPortType - INTEGER(2 - integer (32 bit))
16: rcMltMulticastDistribution - EnableValue(2 - integer (32 bit))
17: rcMltAggregatable - EnableValue(2 - integer (32 bit))
18: rcMltClearLinkAggregate - INTEGER(2 - integer (32 bit))
19: rcMltNtStgEnable - TruthValue(2 - integer (32 bit))
20: rcMltDesignatedPort - InterfaceIndex(2 - integer (32 bit))
21: rcMltAggOperState - EnableValue(2 - integer (32 bit))
22: rcMltAggTimeOfLastOperChange - TimeTicks(67 - timeticks)
23: rcMltPeerPortMembers - PortSet(4 - octets)
24: rcMltCpLimitPktRate - INTEGER(2 - integer (32 bit))
25: rcMltCpLimitShutDownEnable - TruthValue(2 - integer (32 bit))
26: rcMltVlanIdList - OCTET STRING(4 - octets)
27: rcMltEntryOwner - INTEGER(2 - integer (32 bit))
28: rcMltDatapathProgrammingState - INTEGER(2 - integer (32 bit))
29: rcMltPrivateVlanType - INTEGER(2 - integer (32 bit))
30: rcMltPeerPortMembersList - DisplayString(4 - octets)
31: rcMltFlexUniEnable - TruthValue(2 - integer (32 bit))