Limitations of mirroring

You mean port mirroring?

yes using filter on port mirroring. like i want some of traffic to be mirrored not all

Please try filtering the mirroring traffic on the observe port.
As far as I know, it's supported to filter the mirroring traffic on the observe port.

any example for configuration?

Kindly refer this https://support.huawei.com/hedex/hdx.do?lib=EDOC1100075471AEI0724T&docid=EDOC1100075471&lang=en&v=04&tocLib=EDOC1100075471AEI0724T&tocV=04&id=dc_ne_qos_cfg_0011&tocURL=resources%2fsoftware%2fnev8r10%5fvrpv8r16%2fuser%2fne%2fdc%5fne%5fqos%5fcfg%5f0011%2ehtml&p=t&fe=1&ui=3&keyword=traffic%252Bpolicy

Hope it helps you.

Hello,

Kindly refer to the below configurations.

#

acl number 2001

 rule 5 permit source 2.2.2.2 0

#

traffic classifier a operator or

 if-match acl 2001

#

traffic behavior e

 port-mirroring enable

#

traffic policy 1

 classifier a behavior e

#

interface GigabitEthernet1/0/1

 traffic-policy 1 inbound

#

interface GigabitEthernet1/0/3

 port-observing observe-index 3

#

slot 1

 mirror to observe-index 3

#

Refer to https://support.huawei.com/hedex/hdx.do?docid=EDOC1100075471&id=dc_ne_portmirror_cfg_0020&lang=en

Configuring Port Mirroring:
By configuring port mirroring, you can copy the traffic on a specified mirroring port to an observing port for analysis. In this manner, you can know the status of the traffic passing through the mirroring port.

Procedure:
Common mirroring mode
a. Run system-view
The system view is displayed.

b. (Optional) Run observe user-defined-filter
A user-defined any byte matching rule for packet mirroring is configured.

c. Run interface interface-type interface-number
The interface view is displayed.

d. Perform either of the following configurations based on requirements:
- Run the port-mirroring { inbound [ cpu-packet ] | outbound } [ user-defined-filter user-defined-filter-id ] command to configure port mirroring.
Note:
If the cpu-packet keyword is configured, only packets to be sent to the CPU are mirrored on the interface.
- Run the port-mirroring { inbound | outbound } vlan vlan-id1 [ to vlan-id2 ] command to configure VLAN-based mirroring.
- Run the port-mirroring { inbound | outbound } pe-vid low-vid [ to high-vid ] ce-vid ce-vlan-id-begin [ to ce-vlan-id-end ] command to configure mirroring based on VLAN segments for inner and outer VLAN tags.
- Run the port-mirroring { inbound | outbound } fragment command to configure the mirroring function in the MP-group interface view.
Note:
This command applies only to the MP-group interface view.
e. Run commit
The configuration is committed.

https://support.huawei.com/enterprise/en/doc/EDOC1100055025/f5bf45d5/configuring-port-mirroring#dc_ne_portmirror_cfg_0025