Answering myself.
OID should be
iso.3.6.1.4.1.9.9.91.1.2.1.1.4
We can see for a single interface, 4 indexes (RX or TX).
iso.3.6.1.4.1.9.9.91.1.2.1.1.4.2061.1 = INTEGER: 15 iso.3.6.1.4.1.9.9.91.1.2.1.1.4.2061.2 = INTEGER: 794 iso.3.6.1.4.1.9.9.91.1.2....
Great help thanks!
I´m looking also for High Alarm, High Warn,Low Warn and Low Alarm Thresholds, but can´t find the OIDs. How could I manage with that?