Core Issue
What do Cisco routers do for these SNMP MIB variables: ifInOctets, ifInUcastPkts, ifInNUcastPkts, ifInDiscards, ifInErrors, ifInUnknownProtos, ifOutOctets, ifOutUcastPkts, ifOutNUcastPkts, ifOutDiscards, ifOutErrors, and ifOutQLen.
Resolution
For more information, refer to the What do Cisco routers do for these SNMP MIB variables: ifInOctets, ifInUcastPkts, ifInNUcastPkts, ifInDiscards, ifInErrors, ifInUnknownProtos, ifOutOctets, ifOutUcastPkts, ifOutNUcastPkts, ifOutDiscards, ifOutErrors, and ifOutQLen? section of SNMP Counters: Frequently Asked Questions.