Chapter 8: Administering Deskphone Options; Administering A Vlan; About Vlan Tagging - Avaya 9601 Administering

Chapter 8: Administering deskphone

Administering a VLAN

This section contains information on how to administer 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 (off) to ensure correct
operation.
Related Links

About VLAN Tagging

The VLAN default value and priority tagging
Automatic detection of a VLAN
VLAN separation rules and related parameters
About VLAN Tagging
IEEE 802.1Q tagging (VLAN) is a useful method of managing VoIP traffic in your LAN. You can
establish a voice VLAN, set L2QVLAN to the VLAN ID of that VLAN, and provide voice traffic with
priority over other traffic. If LLDP was used to set the VLAN for the deskphones, that setting has
absolute authority. Otherwise, you can set VLAN tagging manually, by DHCP, or in the
46xxsettings.txt file.
If VLAN tagging is enabled (L2Q=0 or 1), the 9600 Series IP Deskphones set the VLAN ID to
L2QVLAN, and VLAN priority for packets from the deskphone to L2QAUD for audio packets and
L2QSIG for signaling packets. The default value (6) for these parameters is the recommended value
for voice traffic in IEEE 802.1D.
Regardless of the tagging setting, a 9600 Series IP Deskphone will always transmit packets from
the deskphone at absolute priority over packets from the secondary Ethernet interface 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 egress or go out of the secondary Ethernet
interface because many PCs will ignore tagged frames.
August 2015
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Administering Avaya 9601/9608/9611G/9621G/9641G/9641GS IP Deskphones SIP
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