Interface vlan counter showing as 0!

[fariha zain]

Hi Team,

Could someone please let me know why am I seeing the int vlan counter rate as 0??????

UK-Switch#sh run int g1/3
Building configuration...

!
interface GigabitEthernet1/3
 description uk
 switchport
 switchport access vlan 120
 switchport mode access
  spanning-tree portfast edge
 spanning-tree bpduguard enable
 channel-group 1 mode active
end

UK-Switch#sh int vlan 120 | i rate
  Queueing strategy: fifo
  5 minute input rate 0 bits/sec, 0 packets/sec >>>>>>>>>>>> o bits input and output why?
  5 minute output rate 0 bits/sec, 0 packets/sec

UK-Switch#sh int g1/3| i rate
  Queueing strategy: fifo
  5 minute input rate 123000 bits/sec,50 packets/sec
  5 minute output rate 98000 bits/sec, 55 packets/sec

UK-Switch#sh int po1 | i rate
  Queueing strategy: fifo
  5 minute input rate 268000 bits/sec, 100 packets/sec
  5 minute output rate 232000 bits/sec, 120 packets/sec

thanks

[glen.grant]

  Because most normal traffic is routed in hardware and not routed to the CPU (SVI) to be routed so you conceivably might not see much traffic punted to the CPU .

[Mohamed Sobair]

If there is a routing through Vlan 120, then you MUST see input and output counters for the Vlan interface.

That means, no routing for Vlan 120 exist. 

Regards,

Mohamed