ZyXEL NWA5301-NJ User Guide - Page 80

IEEE 802.1Q Tag, Management VLAN Setup

Page 80 highlights

Chapter 6 Network Figure 45 Management VLAN Setup In the figure above, to access and manage the NWA/WAC from computer A, the NWA/WAC and switch B's ports to which computer A and the NWA/WAC are connected should be in the same VLAN. A Virtual Local Area Network (VLAN) allows a physical network to be partitioned into multiple logical networks. Devices on a logical network belong to one group. A device can belong to more than one group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same group(s); the traffic must first go through a router. VLAN also increases network performance by limiting broadcasts to a smaller and more manageable logical broadcast domain. In traditional switched environments, all broadcast packets go to each and every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain. IEEE 802.1Q Tag The IEEE 802.1Q standard defines an explicit VLAN tag in the MAC header to identify the VLAN membership of a frame across bridges. A VLAN tag includes the 12-bit VLAN ID and 3-bit user priority. The VLAN ID associates a frame with a specific VLAN and provides the information that devices need to process the frame across the network. Use this screen to configure the VLAN settings for your NWA/WAC. To access this screen, click Configuration > Network > VLAN. The screen varies depending on whether the NWA/WAC has an extra Ethernet port (except the uplink port). NWA / WAC Series User's Guide 80

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Chapter 6 Network
NWA / WAC Series User’s Guide
80
Figure 45
Management VLAN Setup
In the figure above, to access and manage the NWA/WAC from computer
A
, the NWA/WAC and
switch
B
’s ports to which computer
A
and the NWA/WAC are connected should be in the same VLAN.
A Virtual Local Area Network (VLAN) allows a physical network to be partitioned into multiple logical
networks. Devices on a logical network belong to one group. A device can belong to more than one
group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same
group(s); the traffic must first go through a router.
VLAN also increases network performance by limiting broadcasts to a smaller and more manageable
logical broadcast domain. In traditional switched environments, all broadcast packets go to each and
every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain.
IEEE 802.1Q Tag
The IEEE 802.1Q standard defines an explicit VLAN tag in the MAC header to identify the VLAN
membership of a frame across bridges. A VLAN tag includes the 12-bit VLAN ID and 3-bit user priority.
The VLAN ID associates a frame with a specific VLAN and provides the information that devices need to
process the frame across the network.
Use this screen to configure the VLAN settings for your NWA/WAC. To access this screen, click
Configuration > Network > VLAN
.
The screen varies depending on whether the NWA/WAC has an extra Ethernet port (except the uplink
port).