QoS Policy Counters on Catalyst 9600

[Rami Ibrahim]

Hi guys,

 Could anyone help me, I have configured a Policy-map on my catalyst 9600 switch but after monitoring the policy using the "show policy-map interface" command no counters provided in configured classes and in class-default also.

My Class-Map:

 Class-Map FMC-RATE-LIMIT-CM

   match access-group name FMC-RATE-LIMIT-ACL

!

My Policy-Map:

  Policy-map FMC-RATE-LIMIT-PM

   class FMC-RATE-LIMIT-CM

     police cir 2000000

       conform-action transmit

       exceed-action drop

!

interface TengigabitEthernet1/1/0/14

   service-policy input FMC-RATE-LIMIT-PM

!

ip access-list extended FMC-RATE-LIMIT-ACL

 10 permit ip host <FMC-IP> host <FTD1>

 20 permit ip host <FMC-IP> host <FTD2>

 30 permit ip host <FMC-IP> host <FTD3>

 40 permit ip host <FMC-IP> host <FTD4>

!

I wonder if there is a command to enable QoS counters, because int he documentation they stated that as long the policy have shaper or policer counters will be collected.

Catalyst 9600 (IOS 17.x)

Thank you.

[ashok_boin · Accepted solution]

Hi Rami,

Historically, it's a known behaviour of QoS counters not showing statistics for Cisco Catalyst switches like 3560 due to switching in hardware whereas this command "sh policy-map inter" generally for switching in software. 

This might have been improved in newer switches still with some restrictions given in link below.

Quality of Service Configuration Guide, Cisco IOS XE Gibraltar 16.11.x (Catalyst 9600 Switches) - Configuring QoS [Support] - Cisco

Please check "Restrictions for QoS on Wired Targets" and "Classification counters have the following specific restrictions".

Regards..

Ashok.

[Rami Ibrahim]

Thank you.

 Yeah, you're correct.

 I was unable to see traffic counters but actual policer was enforced successfully and monitoring on NMS shows that traffic rate limited to 2 Mbps.

Best Regards,