Contents

Introduction· 1

Prerequisites· 1

Example: Configuring priority marking and queue scheduling· 1

Network configuration· 1

Analysis· 2

Applicable hardware and software versions· 2

Restrictions and guidelines· 4

Procedures· 4

Configuring Device SI 4

Configuring Device S2· 6

Configuring Device A1· 6

Configuring other devices· 7

Verifying the configuration· 7

Configuration files· 8

 

Introduction

This document provides examples for configuring priority marking, priority mapping, and queue scheduling profiles.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of priority marking, priority mapping, and queue scheduling profiles.

Example: Configuring priority marking and queue scheduling

Network configuration

As shown in Figure 1, a company uses dual uplinks to interconnect its headquarters and branches.

The company uses three service types in its intranets:

·     Video service—Uses network segment 10.1.0.0/16 (10.1.1.0/24 for the headquarters, 10.1.2.0/24 for branch A, 10.1.3.0/24 for branch B, 10.1.4.0/24 for branch C, 10.1.5.0/24 for branch D, 10.1.6.0/24 for branch E, and 10.1.7.0/24 for branch F).

·     Production service—Uses network segment 10.2.0.0/16 (10.2.1.0/24 for the headquarters, 10.2.2.0/24 for branch A, 10.2.3.0/24 for branch B, 10.2.4.0/24 for branch C, 10.2.5.0/24 for branch D, 10.2.6.0/24 for branch E, and 10.2.7.0/24 for branch F).

·     Voice service—Uses network segment 10.3.0.0/16 (10.3.1.0/24 for the headquarters, 10.3.2.0/24 for branch A, 10.3.3.0/24 for branch B, 10.3.4.0/24 for branch C, 10.3.5.0/24 for branch D, 10.3.6.0/24 for branch E, and 10.3.7.0/24 for branch F).

Configure priority marking and queue scheduling so the video service, production service, and voice service are scheduled at a ratio of 2:1:1 when congestion occurs.

Figure 1 Network diagram

 

Analysis

To configure priority marking and queue scheduling, you must perform the following tasks:

·     To assign different traffic types to different queues, mark different local precedence values for the service types.

·     To schedule the three services at a ratio of 2:1:1, assign their queues to one WRR group and configure weights for these queues.

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

 

Hardware	Software version
S6812 switch series S6813 switch series	Release 6628Pxx
S6550XE-HI switch series	Release 8106Pxx
S6525XE-HI switch series	Release 8106Pxx
S5850 switch series	Release 8106Pxx
S5570S-EI switch series	Release 11xx
S5560X-EI switch series	Release 6628Pxx
S5560X-HI switch series	Release 6628Pxx
S5500V2-EI switch series	Release 6628Pxx
MS4520V2-30F switch	Release 6628Pxx
MS4520V2-30C switch MS4520V2-54C switch	Release 6628Pxx
MS4520V2-28S switch MS4520V2-24TP switch	Release 63xx
S6520X-HI switch series S6520X-EI switch series	Release 6628Pxx
S6520X-SI switch series S6520-SI switch series	Release 6628Pxx
S5000-EI switch series	Release 6628Pxx
MS4600 switch series	Release 6628Pxx
ES5500 switch series	Release 6628Pxx
S5560S-EI switch series S5560S-SI switch series	Release 63xx
S5500V3-24P-SI switch S5500V3-48P-SI switch	Release 63xx
S5500V3-SI switch series (except S5500V3-24P-SI and S5500V3-48P-SI)	Release 11xx
S5170-EI switch series	Release 11xx
S5130S-HI switch series S5130S-EI switch series S5130S-SI switch series S5130S-LI switch series	Release 63xx
S5120V2-SI switch series S5120V2-LI switch series	Release 63xx
S5120V3-EI switch series	Release 11xx
S5120V3-36F-SI switch S5120V3-28P-HPWR-SI switch S5120V3-54P-PWR-SI switch	Release 11xx
S5120V3-SI switch series (except S5120V3-36F-SI, S5120V3-28P-HPWR-SI, and S5120V3-54P-PWR-SI)	Release 63xx
S5120V3-LI switch series	Release 63xx
S3600V3-EI switch series	Release 11xx
S3600V3-SI switch series	Release 11xx
S3100V3-EI switch series S3100V3-SI switch series	Release 63xx
S5110V2 switch series	Release 63xx
S5110V2-SI switch series	Release 63xx
S5000V3-EI switch series S5000V5-EI switch series	Release 63xx
S5000E-X switch series S5000X-EI switch series	Release 63xx
E128C switch E152C switch E500C switch series E500D switch series	Release 63xx
MS4320V2 switch series MS4320V3 switch series MS4300V2 switch series MS4320 switch series MS4200 switch series	Release 63xx
WS5850-WiNet switch series	Release 63xx
WS5820-WiNet switch series WS5810-WiNet switch series	Release 63xx
WAS6000 switch series	Release 63xx
IE4300-12P-AC IE4300-12P-PWR IE4300-M switch series IE4320 switch series	Release 63xx
IE4520 switch series	Release 66xx
S5135S-EI switch series	Release 6810 and later

 

Restrictions and guidelines

Marking the DSCP, EXP, 802.1p, IP precedence, or local precedence conflicts with the following actions:

·     Traffic filtering (filter deny).

·     Traffic redirecting to the CPU (redirect cpu).

·     Mapping packet colors to drop priority values (primap color-map-dp).

Procedures

Configuring Device SI

1.     Configure a QoS policy on Ten-GigabitEthernet 1/0/3 to assign different traffic types to different queues:

# Create ACL 3000 to match video traffic, and create a behavior to mark the video traffic with local precedence 2.

<DeviceS1> system-view

[DeviceS1] acl advanced 3000

[DeviceS1-acl-ipv4-adv-3000] rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

[DeviceS1-acl-ipv4-adv-3000] quit

[DeviceS1] traffic classifier video

[DeviceS1-classifier-video] if-match acl 3000

[DeviceS1-classifier-video] quit

[DeviceS1] traffic behavior video

[DeviceS1-behavior-video] remark local-precedence 2

[DeviceS1-behavior-video] quit

# Create ACL 3001 to match production traffic, and create a behavior to mark the production traffic with local precedence 3.

[DeviceS1] acl advanced 3001

[DeviceS1-acl-ipv4-adv-3001] rule 0 permit ip source 10.2.1.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

[DeviceS1-acl-ipv4-adv-3001] quit

[DeviceS1] traffic classifier production

[DeviceS1-classifier-production] if-match acl 3001

[DeviceS1-classifier-production] quit

[DeviceS1] traffic behavior production

[DeviceS1-behavior-production] remark local-precedence 3

[DeviceS1-behavior-production] quit

# Create ACL 3002 to match voice traffic, and create a behavior to mark the voice traffic with local precedence 4.

[DeviceS1] acl advanced 3002

[DeviceS1-acl-ipv4-adv-3002] rule 0 permit ip source 10.3.1.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

[DeviceS1-acl-ipv4-adv-3002] quit

[DeviceS1] traffic classifier voice

[DeviceS1-classifier-voice] if-match acl 3002

[DeviceS1-classifier-voice] quit

[DeviceS1] traffic behavior voice

[DeviceS1-behavior-voice] remark local-precedence 4

[DeviceS1-behavior-voice] quit

# Create a QoS policy named policy1, and associate the three traffic classes with their respective traffic behaviors.

[DeviceS1] qos policy policy1

[DeviceS1-qospolicy-policy1] classifier video behavior video

[DeviceS1-qospolicy-policy1] classifier production behavior production

[DeviceS1-qospolicy-policy1] classifier voice behavior voice

[DeviceS1-qospolicy-policy1] quit

# Apply the QoS policy policy1 to the inbound direction of Ten-GigabitEthernet 1/0/3.

[DeviceS1] interface ten-gigabitethernet 1/0/3

[DeviceS1-Ten-GigabitEthernet1/0/3] qos apply policy policy1 inbound

[DeviceS1-Ten-GigabitEthernet1/0/3] quit

2.     Configure a queue scheduling profile on Ten-GigabitEthernet 1/0/1 and Ten-GigabitEthernet 1/0/2:

# Create a queue scheduling profile named qm1 for WRR. Configure the weights of queue 2 (for video traffic), queue 3 (for production traffic), and queue 4 (for voice traffic) as 2, 1, and 1, respectively.

[DeviceS1] qos qmprofile qm1

[DeviceS1-qmprofile-qm1] queue 2 wrr group 1 weight 2

[DeviceS1-qmprofile-qm1] queue 3 wrr group 1 weight 1

[DeviceS1-qmprofile-qm1] queue 4 wrr group 1 weight 1

[DeviceS1-qmprofile-qm1] quit

# Apply the queue scheduling profile qm1 to Ten-GigabitEthernet 1/0/1 and Ten-GigabitEthernet 1/0/2.

[DeviceS1] interface ten-gigabitethernet 1/0/1

[DeviceS1-Ten-GigabitEthernet1/0/1] qos apply qmprofile qm1

[DeviceS1-Ten-GigabitEthernet1/0/1] quit

[DeviceS1] interface ten-gigabitethernet 1/0/2

[DeviceS1-Ten-GigabitEthernet1/0/2] qos apply qmprofile qm1

[DeviceS1-Ten-GigabitEthernet1/0/2] quit

Configuring Device S2

# Configure Device S2 in the same way Device S1 is configured. (Details not shown.)

Configuring Device A1

1.     Configure a QoS policy on Ten-GigabitEthernet 1/0/3 to assign different traffic types to different queues:

# Create ACL 3000 to match video traffic, and create a behavior to mark the video traffic with local precedence 2.

<Device A1> system-view

[DeviceA1] acl advanced 3000

[DeviceA1-acl-ipv4-adv-3000] rule 0 permit ip source 10.1.2.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

[DeviceA1-acl-ipv4-adv-3000] quit

[DeviceA1] traffic classifier video

[DeviceA1-classifier-video] if-match acl 3000

[DeviceA1-classifier-video] quit

[DeviceA1] traffic behavior video

[DeviceA1-behavior-video] remark local-precedence 2

[DeviceA1-behavior-video] quit

# Create ACL 3001 to match production traffic, and create a behavior to mark the production traffic with local precedence 3.

[DeviceA1] acl advanced 3001

[DeviceA1-acl-ipv4-adv-3001] rule 0 permit ip source 10.2.2.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

[DeviceA1-acl-ipv4-adv-3001] quit

[DeviceA1] traffic classifier production

[DeviceA1-classifier-production] if-match acl 3001

[DeviceA1-classifier-production] quit

[DeviceA1] traffic behavior production

[DeviceA1-behavior-production] remark local-precedence 3

[DeviceA1-behavior-production] quit

# Create ACL 3002 to match voice traffic, and create a behavior to mark the voice traffic with local precedence 4.

[DeviceA1] acl advanced 3002

[DeviceA1-acl-ipv4-adv-3002] rule 0 permit ip source 10.3.2.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

[DeviceA1-acl-ipv4-adv-3002] quit

[DeviceA1] traffic classifier voice

[DeviceA1-classifier-voice] if-match acl 3002

[DeviceA1-classifier-voice] quit

[DeviceA1] traffic behavior voice

[DeviceA1-behavior-voice] remark local-precedence 4

[DeviceA1-behavior-voice] quit

# Create a QoS policy named policy1, and associate the three classes of traffic with their respective traffic behaviors.

[DeviceA1] qos policy policy1

[DeviceA1-qospolicy-policy1] classifier video behavior video

[DeviceA1-qospolicy-policy1] classifier production behavior production

[DeviceA1-qospolicy-policy1] classifier voice behavior voice

[DeviceA1-qospolicy-policy1] quit

# Apply the QoS policy policy1 to the inbound direction of Ten-GigabitEthernet 1/0/3.

[DeviceA1] interface ten-gigabitethernet 1/0/3

[DeviceA1-Ten-GigabitEthernet1/0/3] qos apply policy policy1 inbound

[DeviceA1-Ten-GigabitEthernet1/0/3] quit

2.     Configure a queue scheduling profile on Ten-GigabitEthernet 1/0/1:

# Create a queue scheduling profile named qm1 for WRR. Configure the weights of queue 2 (for video traffic), queue 3 (for production traffic), and queue 4 (for voice traffic) as 2, 1, and 1, respectively.

[DeviceA1] qos qmprofile qm1

[DeviceA1-qmprofile-qm1] queue 2 wrr group 1 weight 2

[DeviceA1-qmprofile-qm1] queue 3 wrr group 1 weight 1

[DeviceA1-qmprofile-qm1] queue 4 wrr group 1 weight 1

[DeviceA1-qmprofile-qm1] quit

# Apply the queue scheduling profile qm1 to Ten-GigabitEthernet 1/0/1.

[DeviceA1] interface ten-gigabitethernet 1/0/1

[DeviceA1-Ten-GigabitEthernet1/0/1] qos apply qmprofile qm1

[DeviceA1-Ten-GigabitEthernet1/0/1] quit

Configuring other devices

# Configure Device A2, Device F1, and Device F2 in the same way Device A1 is configured. (Details not shown.)

Verifying the configuration

Verify the configuration on any device, for example, Device S1.

# Verify the QoS policy applied to Ten-GigabitEthernet 1/0/3.

[DeviceS1] display qos policy interface ten-gigabitethernet 1/0/3

  Interface: Ten-GigabitEthernet1/0/3

  Direction: Inbound

  Policy: policy1

   Classifier: video

     Operator: AND

     Rule(s) :

      If-match acl 3000

     Behavior: video

      Marking:

        Remark local-precedence 2

   Classifier: production

     Operator: AND

     Rule(s) :

      If-match acl 3001

     Behavior: production

      Marking:

        Remark local-precedence 3

   Classifier: voice

     Operator: AND

     Rule(s) :

      If-match acl 3002

     Behavior: voice

      Marking:

        Remark local-precedence 4

# Verify the configuration of queue scheduling profiles.

[DeviceS1] display qos qmprofile configuration

Queue management profile: qm1 (ID 1)

 Queue ID    Type    Group    Schedule-unit    Schedule-value    Bandwidth

 ---------------------------------------------------------------------------

 be          SP      N/A      N/A              N/A                N/A

 af1         SP      N/A      N/A              N/A                N/A

 af2         WRR     1        weight           2                  N/A

 af3         WRR     1        weight           1                  N/A

 af4         WRR     1        weight           1                  N/A

 ef          SP      N/A      N/A              N/A                N/A

 cs6         SP      N/A      N/A              N/A                N/A

 cs7         SP      N/A      N/A              N/A                N/A

Configuration files

·     Device S1:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.1.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.1.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return

·     Device S2:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.1.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.1.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return

·     Device A1:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.2.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.2.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.2.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return

·     Device A2:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.2.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.2.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.2.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return

·     Device F1:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.7.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.7.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.7.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return

·     Device F2:

#

qos qmprofile qm1

 queue af2 wrr group 1 weight 2

 queue af3 wrr group 1 weight 1

 queue af4 wrr group 1 weight 1

#

traffic classifier production operator and

 if-match acl 3001

#

traffic classifier video operator and

 if-match acl 3000

#

traffic classifier voice operator and

 if-match acl 3002

#

traffic behavior production

 remark local-precedence 3

#

traffic behavior video

 remark local-precedence 2

#

traffic behavior voice

 remark local-precedence 4

#

qos policy policy1

 classifier video behavior video

 classifier production behavior production

 classifier voice behavior voice

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 qos apply qmprofile qm1

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 qos apply policy policy1 inbound

#

acl advanced 3000

 rule 0 permit ip source 10.1.7.0 0.0.0.255 destination 10.1.0.0 0.0.255.255

#

acl advanced 3001

 rule 0 permit ip source 10.2.7.0 0.0.0.255 destination 10.2.0.0 0.0.255.255

#

acl advanced 3002

 rule 0 permit ip source 10.3.7.0 0.0.0.255 destination 10.3.0.0 0.0.255.255

#

return