net-snmp MIB parse error - "Group not found in module"

When I try to load the Avaya L开发者_高级运维annet-Trapsv2-MIB in net-snmp, it is giving the following parse error:

Group not found in module (lntSecurityNotificationGroup): At line 1311 in C:/net-snmp/share/snmp/mibs/Lannet-Trapsv2-MIB.txt
Group not found in module (lntConfigChangeVarbinds): At line 1311 in C:/net-snmp/share/snmp/mibs/Lannet-Trapsv2-MIB.txt
Group not found in module (lntLagNotificationGroup): At line 1311 in C:/net-snmp/share/snmp/mibs/Lannet-Trapsv2-MIB.txt
[...]

I found the definition of the above modules in the same MIB itself as "NOTIFICATION-GROUP". Any clue to resolve the above error?

Is lntSecurityNotificationGroup defined in Lannet-Trapsv2-MIB.txt? It sounds like it's not. You either need to define it in the file or not use it.