Non-802.1q compliant multiple vlan mode – Allied Telesis AT-S39 User Manual
Page 156
Section II: Local and Telnet Management
156
Note
Remote management of the switch is possible only through the
uplink port.
Non-802.1Q
Compliant
Multiple VLAN
Mode
The Non-802.1Q Compliant Multiple VLAN mode is appropriate when
the device connected to the uplink port is non-802.1Q compatible,
meaning that the device cannot handle tagged packets.
This mode has similarities to the 802.1Q-compliant Multiple VLAN mode.
Like the latter, it places each port into a separate VLAN as an untagged
port. It also uses the same mechanism in naming VLANs and assigning
VIDs and PVIDs.
The main difference is in the uplink port. Rather than being tagged, it is
untagged. This is why the mode is referred to as non-802.1Q compliant.
To be compliant, a port cannot be an untagged member of more than
one VLAN at a time. Since in this mode the uplink port is an untagged
member of multiple VLANs, this mode is non-compliant.
It should also be noted that while the other ports on the switch reside in
separate VLANs, they are also untagged members of the Uplink VLAN.
The advantage of this mode is that the device connected to the uplink
port does not have to be 802.1Q compliant.
When you select the Non-802.1Q Multiple VLAN mode, you are asked to
specify the uplink port. The switch then automatically configures the
VLANs.
Client_VLAN_18
18
18
15
Client_VLAN_19
19
19
15
Client_VLAN_20
20
20
15
Client_VLAN_21
21
21
15
Client_VLAN_22
22
22
15
Client_VLAN_23
23
23
15
Client_VLAN_24
24
24
15
Client_VLAN_25
25
25
15
Client_VLAN_26
26
26
15
VLAN Name
VID
Untagged Port
Tagged Port