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Configuring basic settings of a VLAN interface
You can use VLAN interfaces to provide Layer 3 communication between hosts of different VLANs. VLAN
interfaces are virtual interfaces used for Layer 3 communication between different VLANs. They do not
exist as physical entities on devices. For each VLAN, you can create one VLAN interface. You can assign
the VLAN interface an IP address and specify the IP address as the gateway address for the devices in
the VLAN, so that traffic can be routed to other IP subnets.
Configuration procedure
To configure basic settings of a VLAN interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create a VLAN interface
and enter VLAN interface
view.
interface vlan-interface
vlan-interface-id
If the VLAN interface already exists, you
enter its view directly.
•
When the device starts up with empty
configuration, the software initial settings
are used, and no VLAN interface exists
on the device.
•
When the device starts up with the
default configuration file, the software
default settings are used, and VLAN
interface 1 exists on the device.
For more information about the initial
settings and default configuration file, see
Fundamentals Configuration Guide
.
3.
Assign an IP address to the
VLAN interface.
ip
address
ip-address
{
mask
|
mask-length
}
[
sub
]
Optional.
•
When the device starts up with empty
configuration, the software initial settings
are used, and no IP address is configured
for a VLAN interface.
•
When the device starts up with the
default configuration file, the software
default settings are used, and VLAN
interface 1 automatically obtains an IP
address through DHCP.
4.
Configure a description for
the VLAN interface.
description
text
Optional.
By default, the description of a VLAN is the
VLAN interface name. For example,
Vlan-interface1 Interface
.
5.
Set the MTU for the VLAN
interface.
mtu
size
Optional.
By default, the MTU is 1500 bytes.
6.
Restore the default settings
for the VLAN interface.
default
Optional.
