H3C Technologies H3C S12500 Series Switches - Manual (Page 17)

4
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.
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 the description of
the VLAN interface.
description text
Optional.
By default, the VLAN interface name is
used, for example, Vlan-interface1
Interface.
5. Set the MTU for the VLAN
interface.
mtu size
Optional.
The default setting is 1500 bytes.
6. Restore the default settings
for the VLAN interface.
default Optional.
7. Bring up the VLAN interface. undo shutdown
Optional.
By default, a VLAN interface is in the
down state. After you bring up a VLAN
interface, 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, however, will be
in the DOWN (Administratively) state
until you bring it up, regardless of how
the state of the ports in the VLAN
changes.
VLAN interface configuration example
Network requirements
As shown in Figure 4 , 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.
Configure VLAN interfaces on Switch A and configure the PCs to enable Layer 3 communication
between the PCs.