Assigning An Ip Address To An Interface; Configuration Guidelines; Configuration Procedure; Configuration Example - HP 10500 Series Configuration Manual

Assigning an IP address to an interface

You can assign an interface one primary address and multiple secondary addresses.
Generally, you only need to assign the primary address to an interface. In some cases, you must assign
secondary IP addresses to the interface. For example, if the interface connects to two subnets, to enable
the device to communicate with all hosts on the LAN, assign a primary IP address and a secondary IP
address to the interface.

Configuration guidelines

Follow these guidelines when you assign an IP address to an interface:
• You can set the subnet mask length to 31 (the subnet mask 255.255.255.254) for saving IP
addresses for point-to-point communications on the Release 1203 and later versions.
Each interface has only one primary IP address. A newly configured primary IP address overwrites
•
the previous one.
You cannot assign secondary IP addresses to an interface that obtains an IP address through DHCP.
•
The primary and secondary IP addresses you assign to the interface can be located on the same
•
subnet, but different interfaces on your device must reside on different subnets.
You can manually assign an IP address to an interface or configure the interface to obtain an IP
•
address through DHCP. If you change the way an interface obtains an IP address, the new IP
address overwrites the previous one.

Configuration procedure

To assign an IP address to an interface:
Step
1. Enter system view.
2. Enter interface view.
3. Assign an IP address to
the interface.

Configuration example

Network requirements
As shown in
172.16.1.0/24 and 172.16.2.0/24.
To enable the hosts on the two subnets to communicate with the external network through the switch, and
to enable the hosts on the LAN to communicate with each other:
• Assign a primary IP address and a secondary IP address to VLAN-interface 1 on the switch.
Set the primary IP address of VLAN-interface 1 on the switch as the gateway address of the hosts
•
on subnet 172.16.1.0/24, and the secondary IP address of VLAN-interface 1 on the switch as the
gateway address of the hosts on subnet 172.16.2.0/24.
Command
system-view
interface interface-type
interface-number
ip address ip-address { mask-length
| mask } [ sub ]
Figure 15, a port in VLAN 1 on a switch is connected to a LAN comprising two segments:
Remarks
N/A
N/A
By default, no IP address is assigned to
any interface.
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