Example for Configuring MQC-based Local Traffic Mirroring

Networking Requirements

In Figure 1, the science and technology department and administrative department of a company use the network segments 10.1.1.0/24 and 10.1.2.0/24, respectively, to access the Internet or communicate with each other through the Switch. The monitoring device (Server) is directly connected to the Switch.

The following traffic from the science and technology department needs to be monitored by the Server:

Traffic to the Internet
Traffic to the administrative department

Figure 1 MQC-based local traffic mirroring networking

Configuration Roadmap

The configuration roadmap is as follows:

Configure GE0/0/2 of the Switch as a local observing port to forward mirrored packets to the Server.
Configure a traffic classifier on the Switch to match Internet access traffic and traffic sent to the administrative department, and configure a traffic behavior to mirror traffic to a local observing port.
Configure a traffic policy on the Switch, bind the traffic classifier and traffic behavior to the traffic policy, and apply the traffic policy to GE0/0/1.

Procedure

Configure an observing port.

# Configure GE0/0/2 of the Switch as a local observing port.

<HUAWEI> system-view
[HUAWEI] sysname Switch
[Switch] observe-port 1 interface gigabitethernet 0/0/2

# Disable the observing port from forwarding data packets.

[Switch] observe-port 1 forwarding disable

Configure a traffic classifier.

# Create a traffic classifier c1 on the Switch, and configure rules to match two types of traffic: traffic with source address 10.1.1.0/24 and destination TCP port number WWW and traffic with source address 10.1.1.0/24 and destination address 10.1.2.0/24.

[Switch] acl number 3000
[Switch-acl-adv-3000] rule permit tcp source 10.1.1.0 0.0.0.255 destination-port eq www
[Switch-acl-adv-3000] quit
[Switch] acl number 3001
[Switch-acl-adv-3001] rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
[Switch-acl-adv-3001] quit
[Switch] traffic classifier c1 operator or
[Switch-classifier-c1] if-match acl 3000
[Switch-classifier-c1] if-match acl 3001
[Switch-classifier-c1] quit

Configure a traffic behavior.
# Create a traffic behavior b1 on the Switch, and define traffic mirroring in the traffic behavior to copy specified traffic to local observing port GE0/0/2.
```
[Switch] traffic behavior b1
[Switch-behavior-b1] mirroring to observe-port 1
[Switch-behavior-b1] quit
```
When configuring outbound traffic mirroring on the S6720-EI and S6720S-EI, do not configure other traffic behaviors; otherwise, outbound traffic mirroring is ineffective.
Configure a traffic policy and apply it to an interface.
# Create a traffic policy named p1 on the Switch, bind the traffic behavior and traffic classifier to the traffic policy, and apply the traffic policy to the inbound direction of GE0/0/1 to monitor specified traffic of the science and technology department.
```
[Switch] traffic policy p1
[Switch-trafficpolicy-p1] classifier c1 behavior b1
[Switch-trafficpolicy-p1] quit
[Switch] interface gigabitethernet 0/0/1
[Switch-GigabitEthernet0/0/1] traffic-policy p1 inbound
[Switch-GigabitEthernet0/0/1] return
```

Verify the configuration.

# Check the traffic classifier configuration.

<Switch> display traffic classifier user-defined c1
  User Defined Classifier Information:
   Classifier: c1
    Operator: OR
    Rule(s) : if-match acl 3000
              if-match acl 3001

# Check the traffic policy configuration.

<Switch> display traffic policy user-defined p1
  User Defined Traffic Policy Information:
  Policy: p1
   Classifier: c1
    Operator: OR
     Behavior: b1
      Mirroring  to observe-port 1

# Check the observing port configuration.

<Switch> display observe-port
  ----------------------------------------------------------------------
  Index          : 1
  Untag-packet   : No
  Forwarding     : No
  Interface      : GigabitEthernet0/0/2
  ----------------------------------------------------------------------

# Check the mirroring configuration.

<Switch> display port-mirroring
  ----------------------------------------------------------------------
  Observe-port 1 : GigabitEthernet0/0/2
  ----------------------------------------------------------------------
  Stream-mirror:
  ----------------------------------------------------------------------
       Behavior                  Direction  Observe-port
  ----------------------------------------------------------------------
  1    b1                        -          Observe-port 1
  ----------------------------------------------------------------------