The configuration method of the local port mirroring session on AR series router?

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You can configure local port mirroring,the packets flows through the port can be copied to the local monitoring device for analysis and monitoring.
Before you configure a local port mirroring, you need to port link protocol status to Up.

1 Configure local observing port.
Background information
For local port mirroring, monitoring devices connected to the observing port directly.
If the interface is configured as the mirroring port, it is recommended that you do not perform any configuration on the interface, or it will affects the mirroring function:
-if the observing port not only has a mirroring packets and other service traffic, you will not be able to distinguish packet source.
-if the observing port is congested, due to the relatively low priority, mirroring packets may be discarded.
Operation steps
Run the following command system-view, access the system view.
Run the following command observe-port interface interface-type interface-number, local observing port is configured.

2.Configure local port mirroring port.
Background information
Mirroring port can be arbitrary interface type.
If you have already set the Eth-trunk to the mirroring port, it is impossible to separate configuration its member port as a mirrored port. If you want to configure a member port as a mirrored port, you need to cancel the binding function.
If you have already configured a member port of Eth-trunk as a mirrored port, it is impossible to configuration Eth-trunk as the mirror port. If you want to configure the Eth-trunk as a mirrored port, you need to first cancle the mirroring port function on member interfaces .
Operation steps
Run the following command system-view, access the system view.
Run the following command interface interface-type interface-number, access the interface view.
Run the command mirror observe-port { both | inbound | outbound } [ exclude-link-head ], configure local port mirroring port.

Other related questions:
The configuration method of the remote port mirroring session on AR series router ?
Only the version before V200R005C32 supports remote port mirroring session. By configuring the remote port mirroring session, you can copy flows through the port of the packets to the remote monitoring device for analysis and monitoring. Before configure the remote port mirroring session , you need to configure the routing protocol and GRE tunnel. 1.Configure remote viewing server Operation steps Run the following command system-view, access the system view. Run the command observe-server destination-ip destination-ip-address source-ip source-ip-address [ dscp dscp-value ], configure the remote mirroring observation server. Note: Destination-ip-address is IP address of monitor the device , source-ip-address is a mirrored port IP address. If the monitoring equipment and mirroring port IP address is the private address, in order to ensure communication between private network address in the public network, you need to configure the GRE tunnel. Configure remote mirroring port 2 Background information The mirroring port can be IP-Trunk interface, ethernet interface or Eth-Trunk interface. Eth-trunk -if you have already configured as the mirroring port, it is impossible to separate configuration its member port as a mirrored port. If you want to configure a member port as a mirrored port, you need to cancel the binding function. -If a member port the of Eth-trunk is configured as a mirrored port, it is impossible to configuration Eth-trunk as the mirror port. If you want to configure the Eth-trunk as a mirrored port, you need to first cancle the mirroring port on the member interfaces . Operation steps Run the following command system-view, access the system view. Run the following command interface interface-type interface-number, access the interface view. Run the command mirror to observe-server{ both | inbound | outbound }, configure remote mirroring port.

How to configure local traffic mirroring on AR series routers
By configuring local traffic mirroring, you can replicate specific packets transmitted through an interface to local monitoring devices for analysis and surveillance. Prerequisites Before configuring local traffic mirroring, ensure that the link protocol state of the interface is Up. 1. Configure the local observing interface. Background In local traffic mirroring, monitoring devices are directly connected to the observing interface. It is recommended that other configurations should not be performed on an interface that is configured as the observing interface to prevent its mirroring function from being affected: - If not only the mirroring packets but also the packets of other services are transmitted through the observing interface, the source of the packets cannot be distinguished. - If traffic congests on the observing interface, mirroring packets may be discarded because the priority of the mirroring packets is lower. Procedure Run the system-view command to enter the system view. Run the observe-port interface interface-type interface-number command to configure the local observing interface. 2. Configure traffic mirroring. Background In traffic mirroring, the mirroring interface applies a traffic policy that includes traffic mirroring behavior. Packets that are transmitted through the interface and match the traffic classification rules are replicated to the observing interface. Procedure a. Configure the traffic classifier. Run the system-view command to enter the system view. Run the traffic classifier classifier-name [ operator { and | or } ] command to create a traffic classifier and enter the view of the traffic classifier. Run the if-match command to configure the matching rule of the traffic classifier based on actual requirements. Run the quit command to quit the view of the traffic classifier. b. Configure the traffic behavior. Run the traffic behavior behavior-name command to create traffic behavior and enter the view of the traffic behavior. Run the mirror to observe-port command to mirror traffic that matches the rule to the specified observing interface. Run the quit command to quit the view of the traffic behavior. Run the quit command to quit the system view. c. Configure the traffic policy. Run the system-view command to enter the system view. Run the traffic policy policy-name command to create a traffic policy and enter the view of the traffic policy, or directly enter the view of an existing traffic policy. Run the classifier classifier-name behavior behavior-name command to configure the traffic behavior of specified traffic classifiers in the traffic policy, that is, bind the traffic behavior to the specified traffic classifier. Run the quit command to quit the view of the traffic policy. Run the quit command to quit the system view. d. Apply the traffic policy. Run the system-view command to enter the system view. Run the interface interface-type interface-number [.subinterface-number ] command to enter the interface view. Run the traffic-policy policy-name { inbound | outbound } to apply the traffic policy in the inbound or outbound direction of the interface.

Configure local port mirroring on S series switch
For S series switches (except S1700 switches), to copy inbound packets (received packets) on port GE2/0/1 to the observing port GE1/0/1, configure local port mirroring as follows: [HUAWEI] observe-port 1 interface gigabitethernet 1/0/1 [HUAWEI] interface gigabitethernet 2/0/1 [HUAWEI-GigabitEthernet2/0/1] port-mirroring to observe-port 1 inbound To configure remote port mirroring, see【Configure remote port mirroring on S series switch】Configure remote port mirroring on S series switch.

How to configure local interface mirroring on AR series routers
By configuring local interface mirroring, you can replicate the packets transmitted through the interface to local monitoring devices for analysis and surveillance. Before configuring local interface mirroring, ensure that the link protocol state of the interface is Up. 1. Configure the local observing interface. Background In local interface mirroring, monitoring devices are directly connected to the observing interface. It is recommended that other configurations should not be performed on an interface that is configured as the observing interface to prevent its mirroring function from being affected: - If not only the mirroring packets but also the packets of other services are transmitted through the observing interface, the source of the packets cannot be distinguished. - If traffic congests on the observing interface, mirroring packets may be discarded because the priority of the mirroring packets is lower. Procedure Run the system-view command to enter the system view. Run the observe-port interface interface-type interface-number command to configure the local observing interface. 2. Configure the local mirroring interface. Background An interface of any type can be configured as a mirroring interface. If an Eth-trunk interface is configured as a mirroring interface, a member interface of the Eth-trunk interface cannot be configured as a mirroring interface separately. If you want to configure a member interface of the Eth-trunk as a mirroring interface, you must unbind the member interface from the Eth-trunk interface. If a member interface of an Eth-trunk is configured as a mirroring interface, the Eth-trunk interface cannot be configured as a mirroring interface. If you want to configure the Eth-trunk interface as a mirroring interface, you must unbind the member interface that is configured as the mirroring interface from the Eth-trunk interface. Procedure Run the system-view command to enter the system view. Run the interface interface-type interface-number command to enter the interface view. Run the mirror to observe-port { both | inbound | outbound } [ exclude-link-head ] command to configure the local mirroring interface.

How can I configure port mirroring on a CE switch
Perform the following operations to configure port mirroring:

  1. Run the system-view command to enter the system view.
  2. Run the observe-port [ observe-port-index ] interface interface-type interface-number command to configure a local observing port.
    To configure multiple local observing ports, run this command multiple times.
  3. Run the interface interface-type interface-number command to enter the interface view.
  4. Run the port-mirroring observe-port observe-port-index { both inbound outbound } command to copy traffic to a specified observing port.
    To copy traffic to multiple observing ports, run this command multiple times.
  5. Run the commit command to commit the configuration.


Configuring 1:1 Port Mirroring
You can copy packets on a mirrored port to an observing port. For example, copy incoming packets on mirrored port 10GE1/0/1 to observing port 10GE1/0/2.

<HUAWEI> system-view
[~HUAWEI] observe-port 1 interface 10ge 1/0/2
[*HUAWEI] interface 10ge 1/0/1
[*HUAWEI-10GE1/0/1] port-mirroring observe-port 1 inbound
[*HUAWEI-10GE1/0/1] commit

Configuring 1:N Port Mirroring
You can copy packets on one mirrored port to N observing ports. For example, copy incoming packets on mirrored port 10GE1/0/1 to observing ports 10GE1/0/2 and 10GE1/0/3.

<HUAWEI> system-view
[~HUAWEI] observe-port 1 interface 10ge 1/0/2
[*HUAWEI] observe-port 2 interface 10ge 1/0/3
[*HUAWEI] interface 10ge 1/0/1
[*HUAWEI-10GE1/0/1] port-mirroring observe-port 1 inbound
[*HUAWEI-10GE1/0/1] port-mirroring observe-port 2 inbound
[*HUAWEI-10GE1/0/1] commit

Configuring N:1 Port Mirroring
You can copy packets on N mirrored ports to one observing port. For example, copy incoming packets on mirrored ports 10GE1/0/1 and 10GE1/0/2 to observing port 10GE1/0/3.

<HUAWEI> system-view
[~HUAWEI] observe-port 1 interface 10ge 1/0/3
[*HUAWEI] interface 10ge 1/0/1
[*HUAWEI-10GE1/0/1] port-mirroring observe-port 1 inbound
[*HUAWEI-10GE1/0/1] quit
[*HUAWEI] interface 10ge 1/0/2
[*HUAWEI-10GE1/0/2] port-mirroring observe-port 1 inbound
[*HUAWEI-10GE1/0/2] commit

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