H3C WA2600 series Command Reference Manual page 69

Use the undo ip address ip-address { mask | mask-length } command to remove the primary IP
address.
Use the undo ip address ip-address { mask | mask-length } sub command to remove a secondary IP
address.
By default, no IP address is assigned to any interface.
When assigning IP addresses to an interface, consider the following:
You can assign only one primary IP address to an interface.
The primary and secondary IP addresses can be located in the same network segment.
Before removing the primary IP address, remove all secondary IP addresses.
You can assign a secondary IP address only when the interface is not configured to borrow an IP
address through IP unnumbered or obtain one through DHCP.
Related commands: display ip interface.
Examples
# Assign VLAN-interface 1 a primary IP address and a secondary IP address, with subnet masks being
255.255.255.0.
<Sysname> system-view
[Sysname] interface vlan-interface 1
[Sysname-Vlan-interface1] ip address 129.12.0.1 255.255.255.0
[Sysname-Vlan-interface1] ip address 202.38.160.1 255.255.255.0 sub
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