4000 Router Series Layer 2 - LAN Switching Configuration Guide

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Ste

Command

Remarks

5. Configure the

description of the VLAN.

description text

The default setting is VLAN vlan-id, which is

the ID of the VLAN. For example, the

description of VLAN 100 is VLAN 0100 by

default.

NOTE:

• As the default VLAN, VLAN 1 cannot be created or removed.

• You cannot use the undo vlan command to delete a dynamic VLAN, a VLAN with a QoS policy

applied, or a VLAN locked by an application. To delete such a VLAN, first remove the configuration

from the VLAN.

Configuring basic settings of a VLAN interface

For hosts of different VLANs to communicate at Layer 3, you can use VLAN interfaces. 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 packets destined for

an IP subnet different from that of the VLAN.

Before you create a VLAN interface for a VLAN, create the VLAN first.

To configure basic settings of a VLAN interface:

Ste

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.

By default, no VLAN interface is created.

3. Assign an IP address to the

VLAN interface.

ip address ip-address { mask |

mask-length } [ sub ]

By default, no IP address is assigned to

any VLAN interface.

4. Configure the description

of the VLAN interface.

description text

The default setting is the VLAN interface

name. For example, Vlan-interface1

Interface.

5. Configure the MTU for the

VLAN interface.

mtu size The default setting is 1500 bytes.

6. Configure a MAC address

for the VLAN interface.

mac-address mac-address N/A

7. Configure the expected

bandwidth of the interface.

bandwidth bandwidth-value

By default, the expected bandwidth (in

kbps) is the interface baud rate divided

by 1000.

8. (Optional.) Restore the

default settings for the

VLAN interface.

default N/A

9. (Optional.) Cancel the

action of manually shutting

down the VLAN interface.

undo shutdown

By default, a VLAN interface is

administratively down.