[nsp] MRTG Monitoring

[M.palis]

I am trying to monitor a Gigabit Subinterface using MRTG but MRTG records the Bandwith of the main interface. I am trying to monitor GigabitEthernet1/0/0.2.

Below is my config:

Target[lykpop]: /ipadress:x.x.x.x at x.x.x.x
MaxBytes[testpop]: 12500000
AbsMax[testpop]: 13000000
Title[testpop]: Traffic Analysis for Lykavitos POP
PageTop[testpop]: <H3></H3>
PageFoot[testpop]:
kilo[ltestpop]: 1024
Directory[ltestpop]: lykpop
Options[testpop]: growright, bits

interface GigabitEthernet1/0/0
 no ip address
 load-interval 30
 negotiation auto
 no cdp enable
!
interface GigabitEthernet1/0/0.1
 encapsulation dot1Q 38
 ip address x.x.x.x 255.255.255.240
  no cdp enable
!
interface GigabitEthernet1/0/0.2
 description Connected to vlan 16 for Access Servers
 encapsulation dot1Q 16
 ip address x.x.x.x 255.255.255.240
 

How can i monitor the subinterface? I am monitoring ATM and Frame Relay subinterfaces without any problem.