The Vlan Screen - ZyXEL Communications X6004 User Manual

5.7 The VLAN Screen

Use this screen to configure VLAN settings in the X6004. Click Configuration > Network >
VLAN to open the VLAN screen.
Figure 108 Configuration > Network > VLAN
The following table describes the labels in this screen.
Table 18 Configuration > Network > VLAN
LABEL
Device
Priority / VLAN
ID
Enable
Apply
5.8 Network Technical Reference
This section contains background material relevant to the Network screens.
IEEE 802.1Q Tagged VLANs
An IEEE 802.1Q tagged VLAN uses an explicit tag (VLAN ID) in the MAC header to identify
the VLAN membership of a frame across bridges - they are not confined to the device on
which they were created. The VLAN ID associates a frame with a specific VLAN and
provides the information that devices need to process the frame across the network. A tagged
frame is four bytes longer than an untagged frame and contains two bytes of TPID (Tag
Protocol Identifier), residing within the type/length field of the Ethernet frame) and two bytes
of TCI (Tag Control Information), starts after the source address field of the Ethernet frame).
The CFI (Canonical Format Indicator) is a single-bit flag, always set to zero for the device. If a
frame received at an Ethernet port has a CFI set to 1, then that frame should not be forwarded
as it is to an untagged port. The remaining twelve bits define the VLAN ID, giving a possible
maximum number of 4,096 VLANs. Note that user priority and VLAN ID are independent of
X6004 User's Guide
DESCRIPTION
This displays a network interface.
Select a priority level (0~7) and enter a VLAN ID (1~4094) you want the traffic is
tagged with when it flows through the network interface.
Select this to insert the specified VLAN tag to the outgoing packets flowing through
the network interface.
Click Apply to save your changes back to the X6004.
Chapter 5 Network Deployment
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