Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル

Implementing VLANs on your networks has the following advantages:

VLANs help to control traffic—With traditional networks, broadcast traffic that is 

directed to all network devices, regardless of whether they require it, causes congestion. 
VLANs increase the efficiency of your network because each VLAN can be set up to 
contain only those devices that must communicate with each other.

VLANs provide extra security—Devices within each VLAN can communicate only with 

member devices in the same VLAN. If a device in VLAN Marketing must communicate 
with devices in VLAN Sales, the traffic must cross a routing device.

VLANs ease the change and movement of devices—With traditional networks, 

network administrators spend much of their time dealing with moves and changes. If 
users move to a different subnetwork, the addresses of each endstation must be updated 
manually.

Virtual Routers and VLANs

You can create virtual routers on NETGEAR 8800 switches. 

The XCM8800 software supports virtual routers. Each port can belong to multiple virtual 
routers. Ports can belong to different VLANs that are in different virtual routers.

If you do not specify a virtual router when you create a VLAN, the system creates that VLAN 
in the default virtual router (VR-Default). The management VLAN is always in the 
management virtual router (VR-Mgmt).

After you create virtual routers, the XCM8800 software allows you to designate one of these 
virtual routers as the domain in which all your subsequent configuration commands, including 
VLAN commands, are applied. After you create virtual routers, ensure that you are creating 
each VLAN in the desired virtual router domain. Also, ensure that you are in the correct 
virtual router domain before you begin modifying each VLAN.

For information on configuring and using virtual routers, see 

.

Types of VLANs

You can have netlogin dynamic VLANs and, on the NETGEAR 8800 

series switches only, netlogin MAC-based VLANs. See 

 for complete information on netlogin.

VLANs can be created according to the following criteria:

Physical port

IEEE 802.1Q tag