Configure 3750 MLS to 3850 MQC Conversion of QoS

Introduction

This document describes the difference between 3750 Multilayer Switching (MLS) Quality of Service (QoS) and 3850 Switches with Modular QoS CLI (MQC).

Prerequisites

Requirements

Cisco recommends that you have knowledge of these topics:

• Cisco IOS® Software
• 3750 Multilayer Switching (MLS)
• Switches Modular QoS CLI (MQC)

Components Used

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Background Information

This document also describes detailed information about conversion through sample configurations. This document only applies to the Wired QoS. This document is for networking professionals who are responsible for the design, implementation, or administration of a network that includes a standalone Cisco Catalyst 3850 Switch or a Cisco Catalyst 3850 Switch stack, referred to as the switch.

Overview for the Difference Between 3750 MLS QoS and 3850 MQC QoS

The configuration of QoS in the 3850 line has been improved due to its implementation of MQC (universal QoS configuration model) configuration instead of the old MLS QoS (platform-dependent QoS configuration) commands from the 3750 and 3560 lines of switches.

The main differences are highlighted in this table:

It is important to recognize the main fundamental change in the QoS approach.

On the 3750, by default the QoS is disabled whereas on the 3850, it is enabled. Also in order to preserve Layer 2 (L2)/Layer 3 (L3) QoS marking on the 3750 platform, a trust configuration must be applied.

In the case of the 3850, all packets by default are trusted (the L2/L3 QoS marking is preserved), unless you change it with an application of a specific policy map on the ingress or egress interface.

3750 QoS Model

3850 QoS Model

Feature Detail Comparison Table

Ingress

Egress

Common QoS Show Commands

3750

Input show commands:

show run class-map [name_of_class-map]
show run policy-map [name of policy-map]
show policy-map interface [interface_name]

General show commands:

show mls qos maps
show mls qos maps <options>
show mls qos queue-set
show mls qos interface [interface_name] queuing
show platform port-asic stats drop [interface_name] statistics
show mls qos aggregate-policer

3850

show run class-map [name_of_class-map]
show run policy-map [name of policy-map]
show table-map [name_of_table-map]
show run policy-map [name_of_policy-map]
show policy-map interface [interface_name]
show platform qos policies port sw [sw#]
show platform qos queue config interface_type [interface_name]
show platform qos queue stats interface_type [interface_name]

3750 to 3850 QoS Conversion Sample

Example 1: QoS Disabled

3750

3750#show mls qos
QoS is disabled <- disable
QoS ip packet dscp rewrite is enabled

3750#show mls qos interface gig1/0/1 statistics | b  output queues enqueued 
  output queues enqueued: 
 queue:    threshold1   threshold2   threshold3
-----------------------------------------------
 queue 0:           4           0           0 
 queue 1:           0           0           0 <- control
 queue 2:           0           0           0 
 queue 3:           0           0           0 <- data

  output queues dropped: 
 queue:    threshold1   threshold2   threshold3
-----------------------------------------------
 queue 0:           0           0           0 
 queue 1:           0           0           0  <- control
 queue 2:           0           0           0 
 queue 3:           0           0           0  <- data

Policer: Inprofile:            0 OutofProfile:            0 

3850

3850#show run interface gig1/0/1
interface GigabitEthernet1/0/1
end

3850#show platform qos queue config gigabitEthernet 1/0/1 sw 1
DATA Port:21 GPN:1 AFD:Disabled QoSMap:0 HW Queues: 168 - 175
  DrainFast:Disabled PortSoftStart:1 - 600
----------------------------------------------------------
  DTS Hardmax   Softmax  PortSMin GlblSMin  PortStEnd
  --- --------  -------- -------- --------- ---------
 0   1  5   120  6   480  0     0   0     0   0   800 <- control
 1   1  4     0  7   720  2   480   2   180   2   800 <- data
 2   1  4     0  5     0  0     0   0     0   0   800
 3   1  4     0  5     0  0     0   0     0   0   800
 4   1  4     0  5     0  0     0   0     0   0   800
 5   1  4     0  5     0  0     0   0     0   0   800
 6   1  4     0  5     0  0     0   0     0   0   800
 7   1  4     0  5     0  0     0   0     0   0   800
 Priority   Shaped/shared   weight  shaping_step
 --------   ------------   ------  ------------
 0      0     Shared            50           0
 1      0     Shared            75           0
 2      0     Shared         10000         179
 3      0     Shared         10000           0
 4      0     Shared         10000           0
 5      0     Shared         10000           0
 6      0     Shared         10000         192
 7      0     Shared         10000           0

   Weight0 Max_Th0 Min_Th0 Weigth1 Max_Th1 Min_Th1 Weight2 Max_Th2 Min_Th2
   ------- -------  ------  ------  ------  ------  ------  ------ ------
 0      0     478       0       0     534       0       0     600       0
 1      0     573       0       0     641       0       0     720       0
 2      0       0       0       0       0       0       0       0       0
 3      0       0       0       0       0       0       0       0       0
 4      0       0       0       0       0       0       0       0       0
 5      0       0       0       0       0       0       0       0       0
 6      0       0       0       0       0       0       0       0       0
 7      0       0       0       0       0       0       0       0       0

Example 2 : QoS Enabled Trust COS

3750

Global config:
3750(config)#mls qos

Interface config:
interface GigabitEthernet1/0/1
 mls qos trust cos

Related show cli:

3750#show mls qos
QoS is enabled
QoS ip packet dscp rewrite is enabled

3750#show mls qos interface gig1/0/1
GigabitEthernet1/0/1
trust state: trust cos
trust mode: trust cos
trust enabled flag: ena
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
Trust device: none
qos mode: port-based

3750 #show mls qos maps cos-output-q 
Cos-outputq-threshold map:
cos:              0   1   2   3   4   6     7 
------------------------------------------------------------
queue-threshold: 2-1 2-1 3-1 3-1 4-1 1-1 4-1 4-1

Note: cos value 0 maps to 2-1 [queue-set1 : queue2 threshold 1]

3850

Ingress: apply policy-map trust-cos
Egress: create class based on cos and have queuing action for each class

Ingress policy:
3850#show run policy-map trust-cos 
class class-default
   set cos cos table default

3850#show table-map default
 Table Map default
    default copy

Egress policy:
3850#show run policy-map example2
class cos5
    bandwidth percent 15
 class cos0_1
    bandwidth percent 25
 class cos2_3
    bandwidth percent 40
 class cos4_6_7
    bandwidth percent 20

3850#show run class-map cos5
class-map match-any cos5
  match cos  5 

3850#show run class-map cos0_1
class-map match-any cos0_1
  match cos  0 
  match cos  1 

3850#show run class-map cos2_3
class-map match-any cos2_3
  match cos  2 
  match cos  3 

3850#show run class-map cos4_6_7
class-map match-any cos4_6_7
  match cos  4 
  match cos  6 
  match cos  7 

Example 3: QoS Enabled Trust DSCP

3750

config
3750(config)#mls qos  <- Global
interface GigabitEthernet1/0/1 <- Interface
 mls qos trust dscp


3750#sh mls qos interface gig1/0/1
GigabitEthernet1/0/1
trust state: trust dscp
trust mode: trust dscp
trust enabled flag: ena
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
Trust device: none
qos mode: port-based

3750#show mls qos maps dscp-output-q 
Dscp-outputq-threshold map:
d1 :d2 0    1     2     3     4     5     6     7     8     9 
---------------------------------------------------------------
0 : 02-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 
1 : 02-01 02-01 02-01 02-01 02-01 02-01 03-01 03-01 03-01 03-01
2 : 03-01 03-01 03-01 03-01 03-01 03-01 03-01 03-01 03-01 03-01 
3 : 03-01 03-01 04-01 04-01 04-01 04-01 04-01 04-01 04-01 04-01 
4 : 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 04-01 04-01 
5 : 04-01 04-01 04-01 04-01 04-01 04-01 04-01 04-01 04-01 04-01 
6 : 04-01 04-01 04-01 04-01 	

3850

Ingress: default trust dscp, no policy needed

Egress: use dscp as classification and add queuing action based on customer need

One Sample config:
Plolicy-map:
3850#show run policy-map dscp-shape
class dscp56
    shape average percent 10
 class dscp48
    shape average percent 11
 class dscp40
    shape average percent 12
 class dscp32
    shape average percent 13
Class-map:
3850#show run class-map dscp56
class-map match-any dscp56
  match  dscp cs7 

3850#show run class-map dscp48

class-map match-any dscp48
  match  dscp cs6 

3850#show run class-map dscp40
class-map match-any dscp40
  match  dscp cs5 

3850#show run class-map dscp32
class-map match-any dscp32
  match  dscp cs4 

Example 4: QoS Enabled with an Interface that Has a Set Policy

3750

3750#show run class-map dscp-1
class-map match-any dscp-1
match ip dscp 1 

c3750#show run policy-map set-dscp-63
class dscp-1
set dscp 63

3750#show run interface f7/0/2
interface FastEthernet7/0/2
  mls qos trust dscp
  service-policy input set-dscp-63

3750#show policy-map interface f7/0/2 
FastEthernet7/0/2 

Service-policy input: set-dscp-63

Class-map: dscp-1 (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp 1 

Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any 
0 packets, 0 bytes
5 minute rate 0 bps	

Note: Pkts come in interface fa7/0/2, dscp1 can be marked to dscp63 which mapping 
based on the existing mapping table, other pkts can retain original dscp value
 mapping accordingly

3850

Input can be same as 3750 config 

Egress: can add queuing action under class dscp-63 

One sample config:

3850#show run policy-map  dscp63-queuing
class dscp63
    bandwidth percent 50

3850#show class-map dscp63
 Class Map match-any dscp63 

   Match   dscp 63 

Example 5: QoS Enabled with No MLS QoS Trust on Interface

3750

Global:
c3750(config)#mls qos

Interface:
interface GigabitEthernet2/0/45
!

3850

Input policy:
c3850#show run policy-map example5-input
class class-default
   set dscp default

Output policy:
c3850#show run policy-map example5-output
class dscp0
    shape average percent 10 <- queuing action based on customer need

Attach to the ingress port:
c3850#show run interface gig1/0/1
interface GigabitEthernet1/0/1
 service-policy input example5-input

Attach to the egress port:
c3850#show run interface gig1/0/2
interface GigabitEthernet1/0/2
 service-policy output example5-output

Example 6: QoS Enabled with Change CoS/DSCP Queue Mapping

3750

Before config:
3750#show mls qos maps cos-output-q 
Cos-outputq-threshold map:
cos:              0   1   2   3   4   5   6   7 
------------------------------------------------
queue-threshold: 2-1 2-1 3-1 3-1 4-1 1-1 4-1 4-1 

User config mapping:
3750(config)#mls qos srr-queue output cos-map queue 3 threshold 3 0

New mapping table after config
3750#show mls qos maps cos-output-q 
Cos-outputq-threshold map:
cos:              0   1   2   3   4   5   6   7 
------------------------------------------------
queue-threshold: 3-3 2-1 3-1 3-1 4-1 1-1 4-1 4-1

3850

Input : need apply trust-cos policy:
3850#show run policy-map trust-cos 
class class-default
   set cos cos table default

3850#show table-map default
 Table Map default
    default copy


Egress policy:

Before changing mapping:
Sample config:
3850#show run policy-map example2
class cos5
    bandwidth percent 15
 class cos0_1
    bandwidth percent 25
 class cos2_3
    bandwidth percent 40
 class cos4_6_7
    bandwidth percent 20

3850#show run class-map cos5
class-map match-any cos5
  match cos  5 

3850#show run class-map cos0_1
class-map match-any cos0_1
  match cos  0 
  match cos  1 

3850#show run class-map cos2_3
class-map match-any cos2_3
  match cos  2 
  match cos  3 

3850#show run class-map cos4_6_7
!
class-map match-any cos4_6_7
  match cos  4 
  match cos  6 
  match cos  7 

After mapping changing , corresponding sample config:

3850#show run policy-map example6
class cos5
    bandwidth percent 15
 class cos1
    bandwidth percent 25
 class cos0_2_3
    bandwidth percent 40
 class cos4_6_7
    bandwidth percent 20

3850#show class-map cos5
 Class Map match-any cos5 (id 25)
   Match cos  5 

3850#show run class-map cos1
class-map match-any cos1
  match cos  1 

3850#show run class-map cos0_2_3
class-map match-any cos0_2_3
  match cos  0 
  match cos  2 
  match cos  3 

3850#show run class-map cos4_6_7
class-map match-any cos4_6_7
  match cos  4 
  match cos  6 
  match cos  7

Example 7: MLS Enabled with DSCP Mutation

3750

Global config :
3750(config)#mls qos map dscp-mutation dscp-mutation 0 1 to 63
3750(config)#mls qos map dscp-mutation dscp-mutation 2 3 to 62

Global show cli:
c3750#show mls qos maps dscp-mutation 

Dscp-dscp mutation map:
dscp-mutation:
d1 : d2 0 1 2 3 4 5 6 7 8 9 
---------------------------------------
0 : 63 63 62 62 04 05 06 07 08 09 
1 : 10 11 12 13 14 15 16 17 18 19 
2 : 20 21 22 23 24 25 26 27 28 29 
3 : 30 31 32 33 34 35 36 37 38 39 
4 : 40 41 42 43 44 45 46 47 48 49 
5 : 50 51 52 53 54 55 56 57 58 59 
6 : 60 61 62 63
Dscp-dscp mutation map:
Default DSCP Mutation Map:
d1 : d2 0 1 2 3 4 5 6 7 8 9 
---------------------------------------
0 : 00 01 02 03 04 05 06 07 08 09 
1 : 10 11 12 13 14 15 16 17 18 19 
2 : 20 21 22 23 24 25 26 27 28 29 
3 : 30 31 32 33 34 35 36 37 38 39 
4 : 40 41 42 43 44 45 46 47 48 49 
5 : 50 51 52 53 54 55 56 57 58 59 
6 : 60 61 62 63

Interface config:

interface FastEthernet7/0/3
 description trust dscp
 mls qos trust dscp
 mls qos dscp-mutation dscp-mutation

c3750#show mls qos interface f7/0/3
FastEthernet7/0/3
trust state: trust dscp
trust mode: trust dscp
trust enabled flag: ena
COS override: dis
default COS: 0
DSCP Mutation Map: dscp-mutation
Trust device: none
qos mode: port-based

Interface using default dscp-table:

c3750#show mls qos interface g3/0/1
GigabitEthernet3/0/1
trust state: not trusted
trust mode: not trusted
trust enabled flag: ena
COS override: dis
default COS: 0
DSCP Mutation Map: Default DSCP Mutation Map
Trust device: none
qos mode: port-based

3850

Ingress : apply policy with dscp table-map
Egress: classify on new dscp value with queuing action

Ingress:
3850#show table-map dscp-2-dscp
 Table Map dscp-2-dscp
 from 0 to 63
 from 1 to 63
 from 2 to 62
 from 3 to 62
 default copy
3850#show run policy-map example7-input
class class-default
 set dscp dscp table dscp-2-dscp

Egress:
3850#show run policy-map example7-output

class dscp63
 shape average percent 20 [ queuing action based on the user need]
 class dscp62
 shape average percent 30 [queuing action based on user need]

Example 8: MLS QoS Enabled with Aggregate Policing

3750

Global:
mls qos aggregate-policer agg_traffic 8000 8000 exceed-action drop

Access-list:
access-list 1 permit 192.168.0.0 0.0.0.255
access-list 2 permit 10.0.0.0 0.0.0.255

Class-map:
class-map match-all agg1
 match access-group 1
class-map match-all agg2
 match access-group 2

Policy-map:
policy-map agg_policer
 class agg1
 set dscp 40
 police aggregate agg_traffic
 class agg2
 set dscp 55
 police aggregate agg_traffic

Note: class agg1 and agg2 can share the same policing rate

3850

policy-map agg_police
class class-default
police cir  8000
service-policy child

policy-map child
 class agg1
  set dscp 40
 class agg2
  set dscp 55

Example 9: MLS Enabled with Policing Mark Down

3750

Default policed-dscp map:
3750#show mls qos map policed-dscp 
Policed-dscp map:
d1 : d2 0 1 2 3 4 5 6 7 8 9 
---------------------------------------
0 : 00 01 02 03 04 05 06 07 08 09 
1 : 10 11 12 13 14 15 16 17 18 19 
2 : 20 21 22 23 24 25 26 27 28 29 
3 : 30 31 32 33 34 35 36 37 38 39 
4 : 40 41 42 43 44 45 46 47 48 49 
5 : 50 51 52 53 54 55 56 57 58 59 
6 : 60 61 62 63 

User define policed-dscp map:
3750(config)#mls qos map policed-dscp 0 10 18 24 46 to 8
3750#show mls qos map policed-dscp 
Policed-dscp map:
d1 : d2 0 1 2 3 4 5 6 7 8 9 
---------------------------------------
0 : 08 01 02 03 04 05 06 07 08 09 
1 : 08 11 12 13 14 15 16 17 08 19 
2 : 20 21 22 23 08 25 26 27 28 29 
3 : 30 31 32 33 34 35 36 37 38 39 
4 : 40 41 42 43 44 45 08 47 48 49 
5 : 50 51 52 53 54 55 56 57 58 59 
6 : 60 61 62 63

Policy config:
class-map match-all policed-dscp
match access-group 2
class policed-dscp
police 8000 8000 exceed-action policed-dscp-transmit

Attach the above policy at ingress:

Note : Mark down table can be used by policing and interface policing
as  long as exceed action is transmit

3850

3850(config)#table-map policed-dscp
3850(config-tablemap)#map from 0 to 8
3850(config-tablemap)#map from 10 to 8
3850(config-tablemap)#map from 18 to 8
3850(config-tablemap)#map from 24 to 8
3850(config-tablemap)#map from 46 to 8
3850#show table-map policed-dscp
 Table Map policed-dscp
    from 0 to 8
    from 10 to 8
    from 18 to 8
    from 24 to 8
    from 46 to 8
    default copy

3850#show policy-map policed-dscp
  Policy Map policed-dscp
    Class class-default
     police cir percent 10
       conform-action transmit 
       exceed-action set-dscp-transmit dscp table policed-dscp

Example 10: MLS QoS Enabled with Queue-Limit Configuration

3750

Global config:
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7

If no interface config, the queue-set 1 can be used:

3750#show mls qos queue-set 1
Queueset: 1
Queue     :       1       2       3       4
----------------------------------------------
buffers   :      15      25      40      20
threshold1:     100     125     100      60
threshold2:     100     125     100     150
reserved  :      50     100     100      50
maximum   :     200     400     400     200

For interface config queue-set 2 explicitly:

3750#show mls qos queue-set 2
Queueset: 2
Queue     :       1       2       3       4
----------------------------------------------
buffers   :      25      25      25      25
threshold1:     100     200     100     100
threshold2:     100     200     100     100
reserved  :      50      50      50      50
maximum   :     400     400     400     400

3850

(multiple class with queue-limit turn on)
3850#show policy-map  q-limit
  Policy Map q-limit
    Class users-class
      Queuing action ( shaper, bandwidth and bandwidth remaining)
      queue-limit cos  2 percent 50
      queue-limit cos  3 percent 50
      queue-limit cos  6 percent 70
      queue-limit cos  7 percent 70
Note: using the above config, cos 2 and cos 3 can be dropped earlier then cos 6 and 7

Example 11: MLS QoS Enabled with Queue-Buffer Configuration

3750

Default queue-buffer :
3750#show mls qos queue-set 1
Queueset: 1
Queue     :       1       2       3       4
----------------------------------------------
buffers   :      25      25      25      25
threshold1:     100     200     100     100
threshold2:     100     200     100     100
reserved  :      50      50      50      50
maximum   :     400     400     400     400

User define queue-buffer:
mls qos queue-set output 1 buffers 15 25 40 20

3750#show mls qos queue-set 1
Queueset: 1
Queue     :       1       2       3       4
----------------------------------------------
buffers   :      15      25      40      20
threshold1:     100     125     100      60
threshold2:     100     125     100     150
reserved  :      50     100     100      50
maximum   :     200     400     400     200

3850

3850#show policy-map  queue-buffer
  Policy Map queue-buffer
    Class cos7
      bandwidth percent 10
      queue-buffers ratio 15
    Class cos1
      bandwidth percent 30
      queue-buffers ratio 25

class-map:
========
3850#show class-map cos7
 Class Map match-any cos7 (id 22)

   Match cos  7 

3850#show class-map cos1
 Class Map match-any cos1 (id 28)

   Match cos  1

Attach to the interface at egress direction:

Example 12: MLS QoS Enabled with Bandwidth Configuration

3750

Default share and shape mode:
3750-3stack#show mls qos interface gig 1/0/1 queueing 
GigabitEthernet1/0/1
Egress Priority Queue : disabled
Shaped queue weights (absolute) :  25 0 0 0
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

User config share mode under interface:
interface GigabitEthernet1/0/1
 srr-queue bandwidth share 40 30 20 10
 srr-queue bandwidth shape 0 0 0 0 

3750#show mls qos interface gig1/0/1 queueing  
GigabitEthernet1/0/1
Egress Priority Queue : disabled
Shaped queue weights (absolute) :  0 0 0 0
Shared queue weights  :  40 30 20 10
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

3850

3850#show policy-map  bandwidth
  Policy Map bandwidth
    Class cos1
      bandwidth percent 40
    Class cos2
      bandwidth percent 30
    Class cos3
      bandwidth percent 20
    Class class-default
      bandwidth percent 10
3850#show class-map cos1
 Class Map match-any cos1 

   Match cos  1 

3850#show class-map cos2
 Class Map match-any cos2 

   Match cos  2 

3850#show class-map cos3
 Class Map match-any cos3 (id 26)

   Match cos  3 

3850#show class-map cos4
 Class Map match-any cos4 (id 25)

   Match cos  4 

Example 13: MLS QoS Enabled with Priority

3750

interface GigabitEthernet1/0/2
 priority-queue out 
end

3750#show mls qos interface gig1/0/2 queueing 
GigabitEthernet1/0/2
Egress Priority Queue : enabled
Shaped queue weights (absolute) :  25 0 0 0
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

3850

3850#show run policy-map  priority-queue
class cos7
    priority level 1 ? strict priority
 class cos1
    shape average percent 10
Attach the above policy to interface at egress side:

Example 14: MLS QoS Enabled with Shaper Configuration

3750

Default shape mode:
GigabitEthernet1/0/3
Egress Priority Queue : disabled
Shaped queue weights (absolute) :  25 0 0 0
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

User define shape mode:
interface GigabitEthernet1/0/3
 srr-queue bandwidth shape 4 4 4 4

3750-3stack#show mls qos interface gigabitEthernet 1/0/3 queueing 
GigabitEthernet1/0/3
Egress Priority Queue : disabled
Shaped queue weights (absolute) :  4 4 4 4
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 100  (Operational Bandwidth:100.0)
The port is mapped to qset : 1

3850

3850#show policy-map shape
  Policy Map shape
    Class cos1
      Average Rate Traffic Shaping
      cir 25%
    Class cos2
      Average Rate Traffic Shaping
      cir 25%
    Class cos3
      Average Rate Traffic Shaping
      cir 25%
    Class cos4
      Average Rate Traffic Shaping
      cir 25%

Example 15 : MLS QoS Enabled with Bandwith

3750

interface GigabitEthernet1/0/4
 srr-queue bandwidth limit 50

3750-3stack#show mls qos interface g1/0/4 queueing 
GigabitEthernet1/0/4
Egress Priority Queue : disabled
Shaped queue weights (absolute) :  25 0 0 0
Shared queue weights  :  25 25 25 25
The port bandwidth limit : 50  (Operational Bandwidth:50.0)
The port is mapped to qset : 1

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3850#show policy-map default-shape
  Policy Map default-shape
    Class class-default
      Average Rate Traffic Shaping
      cir 50%
service-policy child [ queuing based on customer need]

Example 16: HQoS

3750

Note:
SVI: Parent [class acl based class-map->policing]
         
         Child  [class interface range class-map->marking]


Child class-map:
3750(config)#class-map cm-interface-1
3750(config-cmap)#match input gigabitethernet3/0/1 - gigabitethernet3/0/2 

Child policy-map:
3750(config)#policy-map port-plcmap-1 
3750(config-pmap)#class cm-interface-1 
3750(config-pmap-c)#police 900000 9000 drop


Parent class-map matching acl:
3750(config)#access-list 101 permit ip any any 

Parent class-map:
3750(config)#class-map cm-1 
3750(config-cmap)#match access 101 

3750(config)#policy-map vlan-plcmap 
3750(config-pmap)#class cm-1 
3750(config-pmap-c)#set dscp 7 
3750(config-pmap-c)#service-policy port-plcmap-1 
3750(config-pmap-c)#exit 
3750(config-pmap)#class cm-2
3750(config-pmap-c)#service-policy port-plcmap-1
3750(config-pmap-c)#set dscp 10

Attach the policy to the interface:
3750(config)#interface vlan 10
3750(config-if)#service-policy input vlan-plcmap 

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Note: Due to target change, this can’t be one to one mapping, need config based on
 customer requirement.

Target is at port level
Parent classify on vlan
Child: none vlan classification [for example cos/dscp]

3850#show run policy-map PV_parent_marking_child_policing
class vlan10
   set dscp 63
   service-policy child_class_dscp_policing
 class vlan11
   set cos 5
   service-policy child_class_dscp_policing
 class vlan12
   set precedence 6
   service-policy child_class_dscp_policing

3850#show run policy-map child_class_dscp_policing
class dscp1
    police cir percent 12
 class dscp2
    police cir percent 15
 class dscp3
    police cir percent 20
 class class-default
    police cir percent 22

3850#show run class-map vlan10
class-map match-any vlan10
  match vlan  10

3850#show run class-map vlan11
class-map match-any vlan11
  match vlan  11

3850#show run class-map vlan12
class-map match-any vlan12
  match vlan  12

3850#show run class-map dscp1
class-map match-any dscp1
  match  dscp 1 

3850#show run class-map dscp2
class-map match-any dscp2
  match  dscp 2 

3850#show run class-map dscp3
class-map match-any dscp3
  match  dscp 3 

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