Example for Configuring Local 1:N Port Mirroring (Observing Ports Are Configured One by One)

Networking Requirements

In Figure 1, the R&D department of a company accesses the Internet through the Switch, and monitoring devices Server1, Server2, and Server3 are directly connected to the switch.

Internet-bound traffic from the R&D department needs to be copied and sent to different servers for different monitoring and analysis purposes.

Figure 1 Local 1:N port mirroring networking

Configuration Roadmap

The configuration roadmap is as follows:

Configure GE0/0/2 through GE0/0/4 of the Switch as local observing ports to forward mirrored packets to different servers.
Configure GE0/0/1 of the Switch as a mirrored port to copy the traffic passing through it and send the traffic to different local observing ports.

Procedure

Configure observing ports.

# Configure GE0/0/2 through GE0/0/4 of the Switch as local observing ports one by one.

<HUAWEI> system-view
[HUAWEI] sysname Switch
[Switch] observe-port 1 interface gigabitethernet 0/0/2
[Switch] observe-port 2 interface gigabitethernet 0/0/3
[Switch] observe-port 3 interface gigabitethernet 0/0/4

# Disable the observing ports from forwarding data packets.

[Switch] observe-port 1 forwarding disable
[Switch] observe-port 2 forwarding disable
[Switch] observe-port 3 forwarding disable

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

In 1:N mirroring, the number of observing ports is determined by the mirroring specifications. For details, see 1:N Mirroring Specifications.
```
[Switch] interface gigabitethernet 0/0/1
[Switch-GigabitEthernet0/0/1] port-mirroring to observe-port 1 inbound
[Switch-GigabitEthernet0/0/1] port-mirroring to observe-port 2 inbound
[Switch-GigabitEthernet0/0/1] port-mirroring to observe-port 3 inbound
[Switch-GigabitEthernet0/0/1] return
```

Verify the configuration.

# Check the observing port configuration.

<Switch> display observe-port
  ----------------------------------------------------------------------
  Index          : 1
  Untag-packet   : No
  Forwarding     : No
  Interface      : GigabitEthernet0/0/2
  ----------------------------------------------------------------------
  Index          : 2
  Untag-packet   : No
  Forwarding     : No
  Interface      : GigabitEthernet0/0/3
  ----------------------------------------------------------------------
  Index          : 3
  Untag-packet   : No
  Forwarding     : No
  Interface      : GigabitEthernet0/0/4
  ----------------------------------------------------------------------

# Check the mirrored port configuration.

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