QOS on 3560

Answered Question
Aug 9th, 2007

Hi all

I have VLAN based policy as per below.

sh mls qos inte XX stati shows correct marking, however show policy map vlan does not show any traffic clocking up.

I have applied similar strategy on 7600 and can see traffic rate on policy map.

mls qos

!

access-list 101 permit ip any any

!

class-map match-all MNGT

match access-group 108

!

policy-map 671-man

class vlan104

set dscp cs3

!

interface Vlan2990

service-policy input MVB-MNGT

!

interface GigabitEthernet0/2

mls qos vlan-based

no cdp enable

I have this problem too.
0 votes
Correct Answer by wochanda about 9 years 4 months ago

This is a limitation with the hardware on the 3560/3750 platforms. At this time we wont show # of policy-map matches in 'show policy-map interface'.

I dont believe there is a plan to fix this, so the best idea is using the 'show mls qos interface statistics' to make sure the policy is working.

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Pavel Bykov Thu, 08/09/2007 - 01:16

please post more of the config. You have ACL 101, that is not refered to in any displayed class-map.

Also you have class vlan104 but there is no "class-map vlan104" configuration.

There is class-map MNGT configuration, but no policy-map refers to it.

Also, MNGT class-map refers to ACL 108, that is not displayed in config.

cisco_lad2004 Thu, 08/09/2007 - 01:37

apologies, I quickly coped and pasted to highlight the method used and I can conform my marking is working as it should.

here is the correct conf:

mls qos

!

access-list 108 permit ip any any

!

class-map match-all MNGT

match access-group 108

policy-map MVB-MNGT

class MNGT

set dscp cs6

!

interface GigabitEthernet0/1

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 1520-1526,2990

switchport mode trunk

mls qos vlan-based

!

!

interface Vlan2990

service-policy input MVB-MNGT

Correct Answer
wochanda Thu, 08/09/2007 - 05:19

This is a limitation with the hardware on the 3560/3750 platforms. At this time we wont show # of policy-map matches in 'show policy-map interface'.

I dont believe there is a plan to fix this, so the best idea is using the 'show mls qos interface statistics' to make sure the policy is working.

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