Apparently, the raw data comes from
ifInOctets(18.104.22.168.22.214.171.124.1.10) and ifOutOctets(126.96.36.199.188.8.131.52.1.16) if ifx counters are not supported. If ifx counters ARE supported then the raw data comes from:
ifHInOctets(184.108.40.206.220.127.116.11.1.1.6) and ifHOutOctets(18.104.22.168.22.214.171.124.1.1.10)
These values provide:
“The total number of octets received/transmitted on the interface, including framing characters.”
These values are then normalized to bytes and time interval.
From what dev has mentioned it may be that the duplicate interface (0 and 0.2) are probably a subdivision of the main interface (0).