Cat6500 mark QoS inbound

[Difan Zhao]

Hi experts,

I have this urgent question.

I thought if I apply a policy-map on a SVI/VLAN interface then traffic coming in on that VLAN and that will be routed to another vlan or interface will be marked with the configured QoS bit... However I just tried but doesn't work... I applied the policy-map on the physical interface then it works...

ip access-list extended v100->v200

permit ip host 10.0.100.100 host 10.0.200.200

!

class-map match-all ef

  match access-group name v100->v200

!

policy-map qos-mark-inbound

  class ef

   set ip dscp ef

  class class-default

   set ip dscp default

!

interface Vlan100 !!! this doesn't work

service-policy input qos-mark-inbound

!

interface GigabitEthernet1/14 !!! this works

service-policy input qos-mark-inbound

First of all, does this behavior make sense to you? My sup is WS-SUP720-3BXL and software version is Version 12.2(33)SXH4

If this is expected behavior, is there a way to apply this inbound marking policy-map on a particular vlan (so affects all interfaces in this vlan) or do I need to apply individually on every single physical port??

Thanks!

[paul driver]

Hello

You may need to apply MLS QOS VLAN-BASED on the trunks carrying the specific vlans

Res
Paul

Sent from Cisco Technical Support iPad App

[Aninda Chatterjee · Accepted solution]

Pdriver is correct. When you are using VLAN based QoS, you need to instruct the port of the same with the mls qos vlan-based command. Apply this on the ingress port and check to see if it works now.

Regards,

Aninda

[Joseph W. Doherty]

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Posting

If I remember correctly, to use VLAN based QoS, you need to configure the port to use it.  (I.e. the policy is set on the VLAN, but the port requires it be told to use that policy.)

[Difan Zhao]

Thank you all. Didn't know this command.. Did some test and it did work.

I ran into another 6500QoS problem and I will post another thread. Please help me on that one as well.

Thanks,