Intel Express 530T User Manual page 97

C H A P T E R 5 Using Local Management
Step 3: Configure VLAN for untagged devices
Even if the device attached to the switch doesn't support 802.1Q tags it
is still possible for the device to participate in the VLAN. When
communicating with untagged devices the switch performs two
functions:
First, the switch determines how to forward untagged traffic. For
untagged traffic, the switch assigns a default VID to the incoming traffic
from the untagged device. Normally, all untagged traffic received on the
switch is assigned a VLAN ID=1 or the DEFAULT_VLAN. You can
change this PVID to the VID of the VLAN you want the port to use.
Next, the switch strips 802.1Q tags before sending traffic to the
untagged device. When the switch needs to send traffic from a port to an
untagged device, it strips the 802.1Q tag, otherwise the untagged device
may not understand how to process the VID tag.
Use the following steps to add an untagged device to an 802.1Q VLAN.
1 Ensure that the port is a member of the VLAN. Refer to the proce-
dure in step 1 (previous page) to add a port to an 802.1Q VLAN.
2 From the Configure VLAN menu, select Configure VLAN ID for
untagged and priority-tagged traffic and press E.
3 Press the z to display the switch you want to configure.
4 Select the port where the untagged device is connected. For
example, port 7.
5 Type the VID of the VLAN you want the port to belong to and press
E. This is the same ID number you entered in step 1.
By specifying a VID you set the switch to assign a particular VID to any
incoming traffic it receives on that port.
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