OID value of interface bandwidth utilization
Solution:
bandwidth utilization in the inbound direction: hh3cIfMonInputUsageStatistics 1.3.6.1.4.1.25506.2.40.5.1.1.1.1
bandwidth utilization in the outbound direction: hh3cIfMonOutputUsageStatistics 1.3.6.1.4.1.25506.2.40.5.1.1.1.2