Example for Configuring Local M:N Port Mirroring

Networking Requirements

In Figure 1, three departments (R&D departments 1 and 2 and marketing department) of a company access the Internet through the switch, and monitoring devices Server1 and Server2 are directly connected to the switch.

Internet-bound traffic from the three departments needs to be copied and sent to different servers for different monitoring and analysis purposes.

Figure 1 Local M:N port mirroring networking

Configuration Roadmap

The configuration roadmap is as follows:

Configure GE0/0/4 and GE0/0/5 of the Switch as local observing ports to forward mirrored packets to different servers.
Configure GE0/0/1 through GE0/0/3 of the Switch as mirrored ports to copy the traffic passing through the mirrored ports and send the traffic to different local observing ports.

Procedure

Configure observing ports.

# Configure GE0/0/4 and GE0/0/5 of the Switch as local observing ports in a batch.

<HUAWEI> system-view
[HUAWEI] sysname Switch
[Switch] observe-port 1 interface-range gigabitethernet 0/0/4 gigabitethernet 0/0/5

# Disable the observing port from forwarding data packets.

[Switch] observe-port 1 forwarding disable

Configure mirrored ports.

# Configure GE0/0/1 through GE0/0/3 of the Switch as mirrored ports to copy the packets received by the mirrored ports and send them to different local observing ports.

In M:N mirroring, the number of observing ports is determined by the mirroring specifications. For details, see M:N Mirroring Specifications.

[Switch] interface gigabitethernet 0/0/1
[Switch-GigabitEthernet0/0/1] port-mirroring to observe-port 1 inbound
[Switch-GigabitEthernet0/0/1] quit
[Switch] interface gigabitethernet 0/0/2
[Switch-GigabitEthernet0/0/2] port-mirroring to observe-port 1 inbound
[Switch-GigabitEthernet0/0/2] quit
[Switch] interface gigabitethernet 0/0/3
[Switch-GigabitEthernet0/0/3] port-mirroring to observe-port 1 inbound
[Switch-GigabitEthernet0/0/3] return

Verify the configuration.

# Check the observing port configuration.

<Switch> display observe-port
  ----------------------------------------------------------------------
  Index          : 1
  Untag-packet   : No
  Forwarding     : No
  Interface-range: GigabitEthernet0/0/4 to GigabitEthernet0/0/5
  ----------------------------------------------------------------------

# Check the mirrored port configuration.

<Switch> display port-mirroring
  ----------------------------------------------------------------------
  Observe-port 1 : GigabitEthernet0/0/4 to GigabitEthernet0/0/5
  ----------------------------------------------------------------------
  Port-mirror:
  ----------------------------------------------------------------------
       Mirror-port               Direction  Observe-port
  ----------------------------------------------------------------------
  1    GigabitEthernet0/0/1      Inbound    Observe-port 1
  2    GigabitEthernet0/0/2      Inbound    Observe-port 1
  3    GigabitEthernet0/0/3      Inbound    Observe-port 1
  ----------------------------------------------------------------------