Vlan Settings; Vlan Tagging; The Vlan Default Value And Priority Tagging - Avaya 9608 Administration

VLAN settings

This section contains information on how to administer SIP-based 9600 Series IP Deskphones
to minimize registration time and maximize performance in a Virtual LAN (VLAN) environment.
If your LAN environment does not include VLANs, set the system parameter L2Q to 2 to ensure
correct operation.

VLAN tagging

IEEE 802.1Q tagging (VLAN) is a useful method of managing VoIP traffic in your LAN. For
better working of your voice network, establish a voice VLAN, assign the VLAN ID of this voice
VLAN to the L2QVLAN parameter , and provide voice traffic with priority over other traffic. You
can set VLAN tagging manually, through DHCP, or in the 46xxsettings.txt file.If you enable
VLAN tagging, that is, set the L2Q parameter to 0 or 1, the deskphone sets:
VLAN ID to the L2QVLAN parameter
●
VLAN priority for audio packets to L2QAUD. The default value is 6.
●
VLAN priority for signaling packets to L2QSIG. The default value is 6.
●
Regardless of the tagging setting, SIP-based 9600 Series IP Deskphones always transmit
packets at absolute priority over packets from the secondary Ethernet interface, for example,
from an attached PC. The priority settings are useful only if the downstream equipment is
administered to give the voice VLAN priority.
!
Important:
VLAN tags are always removed from frames that go out of the secondary
Important:
Ethernet interface because many PCs will ignore tagged frames.
Perform any changes to the VLAN settings only when the deskphone is
non-operational.

The VLAN default value and priority tagging

The L2QVLAN parameter specifies the 802.1Q VLAN Identifier and is initially 0. This default
value indicates "priority tagging" and specifies that your network Ethernet switch automatically
inserts the switch port default VLAN ID without changing the user priority of the frame.
Some switches do not understand a VLAN ID of 0 and require frames tagged with a value other
than VLAN ID.
If you do not want the default VLAN to be used for voice traffic, set the value of L2QVLAN to the
VLAN ID appropriate for your voice LAN.
VLAN settings
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