Manual
+7(495) 797-3311 www.qtech.ru 
Москва, Новозаводская ул., 18, стр. 1 
203 
Chapter 24 Layer 3 Management Configuration 
Switch only support Layer 2 forwarding, but can configure a Layer 3 management port for the 
communication of all kinds of management protocols based on IP protocol. 
24.1 Layer 3 Management Interface 
24.1.1 Introduction to Layer 3 Management Interface 
Only one layer 3 management interface can be created on switch. The Layer 3 interface is not 
a physical interface but a virtual interface. Layer 3 interface is built on VLANs. The Layer 3 
interface can contain one or more layer 2 ports which belong to the same VLAN, or contain no 
layer 2 ports. At least one of the Layer 2 ports contained in Layer 3 interface should be in UP 
state for Layer 3 interface in UP state, otherwise, Layer 3 interface will be in DOWN state. The 
switch can use the IP addresses set in the layer 3 management interface to communicate with 
the other devices via IP. 
24.1.2 Layer 3 Interface Configuration Task List 
Layer 3 Interface Configuration Task List: 
1.  Create Layer 3 management interface 
2.  Configure VLAN interface description 
1.  Create Layer 3 Management Interface 
Command 
Explanation 
Global Mode 
interface vlan <vlan-id> 
no interface vlan <vlan-id> 
Creates a management VLAN interface; the no command 
deletes the VLAN interface created in the switch. 
2.  Configure VLAN interface description 
Command 
Explanation 
VLAN Interface Mode 
description <text> 
no description 
Configure the description information of VLAN interface. 
The no command will cancel the description information 
of VLAN interface. 










