HP 5120 EI Series User Manual

116
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:
Ste
p
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.
3. Assign an IP address to the
VLAN interface.
ip address ip-address
{ mask | mask-length }
[ sub ]
Optional.
By default, no IP address is assigned to any
VLAN interface.
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.
7. Cancel the action of
manually shutting down the
VLAN interface.
undo shutdown
Optional.
By default, a VLAN interface is not manually
shut down. The VLAN interface is up if one or
more ports in the VLAN is up, and goes
down if all ports in the VLAN go down.
A VLAN interface shut down with the
shutdown command is in the DOWN
(Administratively) state until you bring it up,
regardless of how the state of the ports in the
VLAN changes.
NOTE:
Before you create a VLAN interface for a VLAN, create the VLAN.
VLAN interface configuration example
Network requirements
As shown in Figure 39, PC A is assigned to VLAN 5. PC B is assigned to VLAN 10. The PCs belong to
different IP subnets and cannot communicate with each other.

HP 5120 EI Series Specifications

General

Brand	HP
Model	5120 EI Series
Category	Switch
Language	English