QoS 3850 Denali 16.3.5 : Impossible to apply service policy

[Florian P]

Hi,

I have this basic configuration to prioritize voice traffic :

policy-map Egress-Queuing
 class VOIP
  priority
 class SIGNAL
  bandwidth remaining percent 5
 class NC
  bandwidth remaining percent 5
 class class-default
  bandwidth remaining percent 70

class-map match-any VOIP
 match dscp cs5  ef

class-map match-any NC
 match dscp cs6  cs7

class-map match-any SIGNAL
 match dscp cs3

However when I try to apply this service policy on the physical interface of a port-channel, it does not work. It does not generate any error but the config is not displayed under the corresponding interface configuration.

I have looked for bugs but found nothing ... Any ideas ?

Thanks

[johnd2310]

Hi,

Are you applying the service policy as input or output?

Thanks

John

[Florian P]

Hi,

I am applying this command :

Switch(config)#interface TenGigabitEthernet1/0/1
Switch(config-if)#service-policy output Egress-Queuing

The port is not bundled in a port-channel yet.

Best regards,

[johnd2310]

Hi,

is the port channel up? Have you tried allowing the port channel to form and then apply the service policy to the active interfaces of the port channel.

Thanks

John

[Florian P]

For now the Po is down. I have configured the interface like this :

interface TenGigabitEthernet1/0/1
 switchport mode trunk
 udld port aggressive
 cts manual
 channel-group 1 mode desirable
end
interface TenGigabitEthernet1/0/2
 switchport mode trunk
 udld port aggressive
 cts manual
 channel-group 1 mode desirable
end

Switch#show etherchannel 1 summary
Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
1      Po1(SD)         PAgP      Te1/0/1(D)  Te1/0/2(D)

Configuring service policy on Po is banned on Catalyt 3850. If I now configure service-policy on these 2 interfaces, the command is accepted, however not displyed in the config and no service policy seems attached to them :

Switch(config)#interface Te1/0/1
Switch(config-if)#service-policy output Egress-Queuing
Warning: add service policy will cause inconsistency with port TenGigabitEthernet1/0/2 in ether channel 1.
Switch(config)#interface Te2/0/1
Switch(config-if)#service-policy output Egress-Queuing
Switch#show policy-map interface Te1/0/1
Switch#show policy-map interface Te1/0/2

[johnd2310]

Hi,

What happens when you bring up the port-channel and then apply the service-policy?

Thanks

John

[Florian P]

Applying service-policy on the Po is not possible on 3850. I will try to connect and bring the Po up and then apply service-policy on the member of the Po.

[Florian P · Accepted solution]

The solution is the following :

priority level has to be applied when configuring priority for a class-map

policy-map Egress-Queuing
 class VOIP
  priority level 1
 class SIGNAL
  bandwidth remaining percent 5
 class NC
  bandwidth remaining percent 5
 class class-default
  bandwidth remaining percent 70

[Billm]

Thank You, Thank You, Thank You!
I had just "priority"configured as well. Once I added priority level 1, I could apply it to the interface. Bangs head.....