Allied Telesis AT-S39 - Manual (Page 133)

AT-S39 User’s Guide
133
Configuring Multiple VLANs on cascaded switches can also affect
Enhanced Stacking as the Master switch may not be able to detect
member switches beyond the first cascaded switch.
Note
Port-based and Tagged VLAN configurations are restored when the
user enables user-configured VLAN mode.
802.1Q-
Compliant
Multiple VLANs
mode
802.1Q Multiple VLAN configuration is appropriate when the device
connected to the uplink port is 802.1Q compatible, meaning that the
device can handle tagged packets.
When 802.1Q Multiple VLANs mode is selected, the AT-S39 software
configures all ports on that switch as Client VLANs except for one user-
specified port that is designated as an Uplink VLAN (also referred to as
management VLAN). Each Client VLAN on the switch is configured with
one untagged port and one tagged port, a user-specified uplink port.
Upon selecting the 802.1Q-compliant VLAN mode, you are asked to
specify the Uplink VLAN port. After specifying this port, all the ports on
the switch are automatically configured.
For example, if your switch supports 26 ports and you selected 802.1Q-
compliant VLAN mode , you would be asked to specify the Uplink VLAN
port. If you selected 15, the VLANs would be configured as shown in the
Table 8 example.
Note
In 802.1Q Multiple VLANs mode, any device connected to the uplink
port must be 802.1Q-compliant.
Note
Procedures for configuring multiple VLANs can be found in
Multiple VLAN Configuration on page 156.
Table 8 802.1Q-Compliant Multiple VLAN Example
VLAN Name VID Untagged Port Tagged Port
Client_VLAN_1 1 1 15
Client_VLAN_2 2 2 15
Client_VLAN_3 3 3 15