H3C Technologies H3C S7500E Series Switches - Manual (Page 212)

15-4
To do… Use the command… Remarks
Configure the description of
the current VLAN
description text
Optional
VLAN ID is used by default, VLAN 0001 for
example.
As the default VLAN, VLAN 1 cannot be created or removed.
You cannot manually create or remove VLANs reserved for special purposes.
Dynamic VLANs cannot be removed with the undo vlan command.
A VLAN with a QoS policy applied cannot be removed.
After associating an isolate-user-VLAN with a secondary VLAN, you cannot add ports to, remove
ports from, or remove, the VLANs. To do that, remove the association first.
A VLAN operating as a probe VLAN for remote port mirroring or an RRPP protected VLAN cannot
be removed with the undo vlan command. To do that, remove the remote mirroring VLAN or
RRPP protected VLAN configuration from it first.
Configuring Basic Settings of a VLAN Interface
For hosts of different VLANs to communicate, you must use a router or Layer 3 switch to perform layer
3 forwarding. To achieve this, VLAN interfaces are used.
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 it as the gateway of the VLAN to forward
traffic destined for an IP network segment different from that of the VLAN.
Follow these steps to configure basic settings of a VLAN interface:
To do… Use the command… Remarks
Enter system view system-view —
Create a VLAN interface and
enter VLAN interface view
interface vlan-interface
vlan-interface-id
Required
If the VLAN interface already exists, you
enter its view directly.
Assign an IP address to the
VLAN interface
ip address ip-address { mask |
mask-length } [ sub ]
Optional
No IP address is assigned to any VLAN
interface by default.
Configure the description of the
VLAN interface
description text
Optional
VLAN interface name is used by default,
for example, Vlan-interface1 Interface.