H3C LSW1FC4P0 Interface Card for S5820X-28C Ethernet Switches Command Line Interface Guide Firmware Version 9.0.7

Command Reference
Vlan
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The following is an example of the Vlan Add Port command:
H3C (admin) #> config edit
The config named default is being edited.
H3C (admin-config) #> vlan 1003 add port 4-6
Ports 4-6 have been added to VLAN 1003.
This configuration must be saved (see 'config save' command) and
activated (see 'config activate' command) before it can take effect.
To discard this configuration use the 'config cancel' command.
H3C (admin-config) #> config save
The config named default has been saved.
H3C (admin) #> config activate
The currently active configuration will be activated.
Please confirm (y/n): [n] y