Intel 470F - NetStructure Switch User Manual page 91

C H A P T E
470T Ch5 - Sec 2-VLANs-Monitoring-Tools.p65
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, it 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.
Second, it 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 a untagged device to a 802.1Q VLAN.
1 Ensure that the port is a member of the VLAN. Refer to the procedure
in step 1 to add a port to a 802.1Q VLAN.
2 From the Configure VLAN menu, select Configure VLAN ID for
Untagged Devices and press E.
3 Select the port where the untagged device is connected. For example,
port 7.
4 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.
5 Select APPLY and press E to activate the changes.
By specifying a VID you set the switch to assign a particular VID to any
incoming traffic it receives on that port.
85 4/12/00, 10:15 AM
85