Example for Configuring Traffic Shaping

NetEngine AR V300R019 CLI-based Configuration Guide - QoS

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Networking Requirements

As shown in Figure 3-9, voice, video, and data services are deployed on the LAN of an enterprise. The service traffic is transmitted to Eth2/0/0 of RouterA through the switch, and then to the WAN through GE3/0/0 of RouterA.

Packets of different services are identified by 802.1p priorities on the LAN. RouterA sends the packets to queues based on 802.1p priorities. When the packets reach the WAN through GE3/0/0, jitter may occur. The following requirements must be met to reduce jitter and ensure bandwidth of services:

The CIR on GE3/0/0 is 8000 kbit/s.
The CIR and CBS for the voice service are 256 kbit/s and 6400 bytes respectively.
The CIR and CBS for the video service are 4000 kbit/s and 100000 bytes respectively.
The CIR and CBS for the data service are 2000 kbit/s and 50000 bytes respectively.

Figure 3-9 Networking of traffic shaping

Configuration Roadmap

The configuration roadmap is as follows:

Create VLANs and VLANIF interfaces on RouterA and configure physical interfaces to ensure that enterprise users can access the WAN through RouterA.
Configure the inbound interface of service packets on RouterA to trust 802.1p priorities in packets.
Configure interface-based traffic shaping on the inbound interface of service packets on RouterA to limit the interface bandwidth.
Configure queue-based traffic shaping on RouterA to limit the bandwidth of voice, video, and data services.

Procedure

Configure VLANs and interfaces.

# Create VLAN 10 on RouterA.

<Router> system-view
[Router] sysname RouterA
[RouterA] vlan 10
[RouterA-vlan10] quit

# Configure Eth2/0/0 as a trunk interface and add it to VLAN 10.

[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] port link-type trunk
[RouterA-Ethernet2/0/0] port trunk allow-pass vlan 10
[RouterA-Ethernet2/0/0] quit

Configure the interface on the switch connected to RouterA as a trunk interface and add it to VLAN 10.

# Create VLANIF 10 and assign IP address 192.168.1.1/24 to VLANIF 10.

[RouterA] interface vlanif 10
[RouterA-Vlanif10] ip address 192.168.1.1 24
[RouterA-Vlanif10] quit

# Set the IP address of GE3/0/0 to 192.168.4.1/24.

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

Configure RouterB and ensure that there are reachable routes between RouterB and RouterA.

Configure the packet priority trusted by the inbound interface of packets.
# Configure Eth2/0/0 to trust 802.1p priorities of packets.
```
[RouterA] interface ethernet 2/0/0
[RouterA-Ethernet2/0/0] trust 8021p 
[RouterA-Ethernet2/0/0] quit
```
Configure interface-based traffic shaping.
# Configure traffic shaping on GE3/0/0 of RouterA to limit the traffic rate on the interface to 8000 kbit/s.
```
[RouterA] interface gigabitethernet 3/0/0
[RouterA-GigabitEthernet3/0/0] qos gts cir 8000
[RouterA-GigabitEthernet3/0/0] quit
```
Configure queue-based traffic shaping.
# Create a queue profile qp1 on RouterA, set the scheduling mode to WFQ for queues 0 to 5 and to PQ for queue 6 and queue 7. Set CIR values for queue 6, queue 5, and queue 2 to 256 kbit/s, 4000 kbit/s, and 2000 kbit/s respectively, and set CBS values for queue 6, queue 5, and queue 2 to 6400 bytes, 100000 bytes, and 50000 bytes respectively.
```
[RouterA] qos queue-profile qp1
[RouterA-qos-queue-profile-qp1] schedule pq 6 to 7 wfq 0 to 5
[RouterA-qos-queue-profile-qp1] queue 6 gts cir 256 cbs 6400
[RouterA-qos-queue-profile-qp1] queue 5 gts cir 4000 cbs 100000
[RouterA-qos-queue-profile-qp1] queue 2 gts cir 2000 cbs 50000
[RouterA-qos-queue-profile-qp1] quit
```
# Apply the queue profile qp1 to GE3/0/0 on RouterA.
```
[RouterA] interface gigabitethernet 3/0/0
[RouterA-GigabitEthernet3/0/0] qos queue-profile qp1
```

Verify the configuration.

# View the configuration of GE3/0/0 on RouterA.

[RouterA-GigabitEthernet3/0/0] display this
#                                                                               
interface GigabitEthernet3/0/0
 ip address 192.168.4.1 255.255.255.0                                        
 qos queue-profile qp1                                                          
 qos gts cir 8000                                                   
#                                                                               
return

# View the queue profile configuration.

[RouterA-GigabitEthernet3/0/0] quit
[RouterA] display qos queue-profile qp1
Queue-profile: qp1                                                              
Queue  Schedule  Weight  Length(Bytes/Packets) GTS(CIR/CBS)                     
-----------------------------------------------------------------               
0      WFQ       10                 -/-              -/-                        
1      WFQ       10                 -/-              -/-                        
2      WFQ       10                 -/-           2000/50000                    
3      WFQ       10                 -/-              -/-                        
4      WFQ       10                 -/-              -/-                        
5      WFQ       10                 -/-           4000/100000                   
6      PQ        -                  -/-            256/6400                     
7      PQ        -                  -/-              -/-

Configuration Files

RouterA configuration file

#
 sysname RouterA
#
vlan batch 10
#
qos queue-profile qp1
  queue 2 gts cir 2000 cbs 50000
  queue 5 gts cir 4000 cbs 100000
  queue 6 gts cir 256 cbs 6400
  schedule wfq 0 to 5 pq 6 to 7
#
interface Vlanif10
 ip address 192.168.1.1 255.255.255.0
#
interface Ethernet2/0/0
 port link-type trunk
 port trunk allow-pass vlan 10
 trust 8021p
#
interface GigabitEthernet3/0/0
  ip address 192.168.4.1 255.255.255.0
 qos queue-profile qp1
 qos gts cir 8000
#
return

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Updated: 2023-05-18

Document ID: EDOC1100112355

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