Question about the monitoring incomming traffic with snmp on CENTOS7.

[rodrigo.toor.rj]

Dears, I have a Centos 7.
I want monitoring incoming traffic on enp0s8 port with snmp.I configured the setup bellow :

[SIZE=10px][FONT=Arial]# Map '209ijvfwer0df92jd' community to the 'AllUser'
# sec.name source community
com2sec ConfigUser default idv90we3rnov90wer
com2sec AllUser default 209ijvfwer0df92jd
# Map 'ConfigUser' to 'ConfigGroup' for SNMP Version 2c
# Map 'AllUser' to 'AllGroup' for SNMP Version 2c
# sec.model sec.name
group ConfigGroup v2c ConfigUser
group AllGroup v2c AllUser
# Define 'SystemView', which includes everything under .1.3.6.1.2.1.1 (or .1.3.6.1.2.1.25.1)
# Define 'AllView', which includes everything under .1
# incl/excl subtree
view SystemView included .1.3.6.1.2.1.1
view SystemView included .1.3.6.1.2.1.25.1.1
view AllView included .1
# Give 'ConfigGroup' read access to objects in the view 'SystemView'
# Give 'AllGroup' read access to objects in the view 'AllView'
# context model level prefix read write notify
access ConfigGroup "" any noauth exact SystemView none none
access AllGroup "" any noauth exact AllView none none[/FONT][/SIZE]

This system is up, but I don’t know how find the specific OID to monitoring this item.
I used the command bellow to check-up snmp oid, but the report is not clear about incoming traffic on enp0s8.
I saw this article on zabbix blog[1], but I did not understand which one should be select to each item key.

For this command line:
$snmpwalk -v 2c -c idv90we3rnov90wer -O e 127.0.0.1
Report bellow:

For this command line:
$snmpwalk -v 2c -c 209ijvfwer0df92jd -O e 127.0.0.1
Report bellow: