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CLI-based Configuration Guide - QoS
AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the network management feature supported by the device.

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Example for Configuring Priority Re-marking

Example for Configuring Priority Re-marking

Networking Requirements

As shown in Figure 8-2, voice, video, and data terminals on the enterprise's LAN connect to Eth2/0/0 and Eth2/0/1 of RouterA through SwitchA and SwitchB. These terminals connect to the WAN through GE3/0/0 of RouterA.

Packets of different services are identified by 802.1p priorities on the LAN. When packets reach the WAN through GE3/0/0, it is required that differentiated services are provided based on DSCP priorities.

Figure 8-2  Networking for configuring priority re-marking

Configuration Roadmap

802.1p priorities are re-marked with DSCP priorities to implement differentiated services. The configuration roadmap is as follows:
  1. Create VLANs and VLANIF interfaces on RouterA and configure interfaces so that enterprise users can access the WAN-side network through RouterA.
  2. Configure traffic classifiers on RouterA to classify packets based on 802.1p priorities.
  3. Configure traffic behaviors on RouterA to re-mark 802.1p priorities of packets with DSCP priorities.
  4. Configure a traffic policy on RouterA, bind the configured traffic behaviors and traffic classifiers to the traffic policy, and apply the traffic policy to Eth2/0/0 and Eth2/0/1 in the inbound direction so that packets are re-marked.

Procedure

  1. Create VLANs and configure interfaces.

    # Create VLAN 20 and VLAN 30 on RouterA.

    <Huawei> system-view
[Huawei] sysname RouterA
[RouterA] vlan batch 20 30

    # Configure Eth2/0/0 and Eth2/0/1 as trunk interfaces, and add Eth2/0/0 to VLAN 20 and Eth2/0/1 to VLAN 30.

    [RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] port link-type trunk
[RouterA-Ethernet2/0/0] port trunk allow-pass vlan 20
[RouterA-Ethernet2/0/0] quit
[RouterA] interface ethernet 2/0/1
[RouterA-Ethernet2/0/1] port link-type trunk
[RouterA-Ethernet2/0/1] port trunk allow-pass vlan 30
[RouterA-Ethernet2/0/1] quit

    Configure the interface of SwitchA connected to RouterA as a trunk interface and add it to VLAN 20.

    Configure the interface of SwitchB connected to RouterA as a trunk interface and add it to VLAN 30.

    # Create VLANIF 20 and VLANIF 30, and assign IP address 192.168.2.1/24 to VLANIF 20 and IP address 192.168.3.1/24 to VLANIF 30.

    [RouterA] interface vlanif 20
[RouterA-Vlanif20] ip address 192.168.2.1 24
[RouterA-Vlanif20] quit
[RouterA] interface vlanif 30
[RouterA-Vlanif30] ip address 192.168.3.1 24
[RouterA-Vlanif30] quit

    # Configure IP address 192.168.4.1/24 for GE3/0/0 on RouterA.

    [RouterA] interface gigabitethernet 3/0/0
[RouterA-GigabitEthernet3/0/0] ip address 192.168.4.1 24
[RouterA-GigabitEthernet3/0/0] quit

    # Configure IP address 192.168.4.2/24 for GE3/0/0 on RouterB.

    <Huawei> system-view
[Huawei] sysname RouterB
[RouterB] interface gigabitethernet 3/0/0
[RouterB-GigabitEthernet3/0/0] ip address 192.168.4.2 24
[RouterB-GigabitEthernet3/0/0] quit

    # Configure RouterB to interwork with the LAN-side device.

    [RouterB] ip route-static 192.168.2.0 255.255.255.0 192.168.4.1
[RouterB] ip route-static 192.168.3.0 255.255.255.0 192.168.4.1

    Configure the default gateway address 192.168.2.1/24 for enterprise users connected to SwitchA.

    Configure the default gateway address 192.168.3.1/24 for enterprise users connected to SwitchB.

  2. Configure traffic classifiers.

    # Create and configure traffic classifiers c1, c2, and c3 on RouterA to classify packets based on 802.1p priorities.

    [RouterA] traffic classifier c1
[RouterA-classifier-c1] if-match 8021p 2
[RouterA-classifier-c1] quit
[RouterA] traffic classifier c2
[RouterA-classifier-c2] if-match 8021p 5
[RouterA-classifier-c2] quit
[RouterA] traffic classifier c3
[RouterA-classifier-c3] if-match 8021p 6
[RouterA-classifier-c3] quit

  3. Configure traffic behaviors.

    # Create and configure traffic behaviors b1, b2, and b3 on RouterA to re-mark 802.1p priorities of packets with DSCP priorities.

    [RouterA] traffic behavior b1
[RouterA-behavior-b1] remark dscp 15
[RouterA-behavior-b1]  quit
[RouterA] traffic behavior b2
[RouterA-behavior-b2] remark dscp 40
[RouterA-behavior-b2] quit
[RouterA] traffic behavior b3
[RouterA-behavior-b3] remark dscp 50
[RouterA-behavior-b3] quit

  4. Configure traffic policies and apply the traffic policies to interfaces.

    # Create a traffic policy p1 on RouterA, bind the traffic behaviors and traffic classifiers to the traffic policy, and apply the traffic policy to Eth2/0/0 and Eth2/0/1 in the inbound direction.

    [RouterA] traffic policy p1
[RouterA-trafficpolicy-p1] classifier c1 behavior b1
[RouterA-trafficpolicy-p1] classifier c2 behavior b2
[RouterA-trafficpolicy-p1] classifier c3 behavior b3
[RouterA-trafficpolicy-p1] quit
[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] traffic-policy p1 inbound
[RouterA-Ethernet2/0/0] quit
[RouterA] interface ethernet 2/0/1
[RouterA-Ethernet2/0/1] traffic-policy p1 inbound
[RouterA-Ethernet2/0/1] quit

  5. Verify the configuration.

    # View the traffic classifier configuration.

    <RouterA> display traffic classifier user-defined
  User Defined Classifier Information:                                          
   Classifier: c2                                                               
    Operator: OR                                                               
    Rule(s) :
     if-match 8021p 5                                                  
   Classifier: c3                                                               
    Operator: OR                                                               
    Rule(s) :
     if-match 8021p 6                                                  
   Classifier: c1                                                               
    Operator: OR                                                               
    Rule(s) :
     if-match 8021p 2

    # View the traffic policy configuration.

    <RouterA> display traffic policy user-defined p1
  User Defined Traffic Policy Information:                                      
  Policy: p1                                                                    
   Classifier: c1                                                               
    Operator: OR                                                               
     Behavior: b1                                                               
      Marking:                                                                  
        Remark DSCP 15                                                          
                                                                                
   Classifier: c2                                                               
    Operator: OR                                                               
     Behavior: b2                                                               
      Marking:                                                                  
        Remark DSCP cs5                                                         
                                                                                
   Classifier: c3                                                               
    Operator: OR                                                               
     Behavior: b3                                                               
      Marking:                                                                  
        Remark DSCP 50

Configuration Files

  • RouterA configuration file
    #
 sysname RouterA
#
vlan batch 20 30
#
traffic classifier c3 operator or
 if-match 8021p 6
traffic classifier c2 operator or
 if-match 8021p 5
traffic classifier c1 operator or
 if-match 8021p 2
#
traffic behavior b3
 remark dscp 50
traffic behavior b2
 remark dscp cs5
traffic behavior b1
 remark dscp 15
#
traffic policy p1                                                               
 classifier c1 behavior b1                                                      
 classifier c2 behavior b2                                                      
 classifier c3 behavior b3
#
interface Vlanif20                                                              
 ip address 192.168.2.1 255.255.255.0                                           
#                                                                               
interface Vlanif30                                                              
 ip address 192.168.3.1 255.255.255.0                                           
#
interface Ethernet2/0/0
 port link-type trunk                                                           
 port trunk allow-pass vlan 20                                                  
 traffic-policy p1 inbound                                                      
#                                                                               
interface Ethernet2/0/1
 port link-type trunk                                                           
 port trunk allow-pass vlan 30                                                  
 traffic-policy p1 inbound                                                      
#                                                                               
interface GigabitEthernet3/0/0
 ip address 192.168.4.1 255.255.255.0                                           
#
return
  • RouterB configuration file
    #
 sysname RouterB
#
interface GigabitEthernet3/0/0
 ip address 192.168.4.2 255.255.255.0                                           
# 
ip route-static 192.168.2.0 255.255.255.0 192.168.4.1
ip route-static 192.168.3.0 255.255.255.0 192.168.4.1
#
return
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Updated: 2020-08-06

Document ID: EDOC1100034075

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