the DHCP server with a VLAN ID=L2QVLAN. If the phone does not receive a DHCPOFFER with
that particular VLAN ID, then it eventually fails back. The phone tries to contact the DHCP server
again if L2Q is set to 0 and the VLAN tag is not set.
The VLANTEST parameter determines how long the phone waits for a recognizable
DHCPOFFER. If VLANTEST is set to 0, then the phone does not fail back and keeps sending
DHCP requests by using tagged VLAN frames with VLAN ID = L2QVLAN.
VLAN support on the computer or PC port
In full VLAN separation mode, the phone only supports one VLAN on the computer port. In no
VLAN separation mode, all VLANs pass between the LAN and PC ports. However, the CPU port
receives all traffic even if on VLANs that are not equal to L2QVLAN.
VLAN parameters
The following configuration parameters are used to configure the VLAN functionality on the
network switch internal to the phone:
Parameter name Default value Description
L2Q 0 Specifies whether the VLAN tagging is enabled
or disabled.
The options are:
• 0: Auto. VLAN tagging is turned on when the
network can support VLAN tagging and
L2QVLAN is non zero.
• 1: On. VLAN tagging is turned on when the
network can support VLAN tagging. The IP
phone sends tagged frames with VLAN =
L2QVLAN, even if L2QVLAN is set to 0.
• 2: Off. VLAN functionality is disabled.
L2Q is configured through:
• Local admin procedure
• A name equal to the value pair in a DHCPACK
message
• A SET command in the 46xxsettings.txt
file
• DHCP option 43
• LLDP
Table continues…
Virtual LAN overview
January 2020 Installing and Administering Avaya 9601/9608/9611G/9621G/9641G/9641GS IP
Deskphones SIP 65
Comments on this document? infodev@avaya.com
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