Vlan Ids - Nortel 2001 Installation And Operation Manual

VLAN IDs

Automatic VOICE VLAN ID configuration
Appendix B: 802.1Q VLAN description
The VOICE and DATA VLAN ID fields can be specified on a "per interface"
basis. There is only one network interface on the IP Phone; however, the IP
Phone has two internal IDs, one for voice and one for data traffic. The IP
Phone firmware can detect and route the voice and data traffic. The VLAN ID
fields are "global" settings. That is, all voice packets transmitted by the IP
Phone have the same VOICE VLAN ID. If DATA VLAN is enabled, the
telephone will add the DATA VLAN ID to untagged traffic. However, if the
traffic arriving on the PC port is already tagged, the frame will pass through
unchanged.
Each VLAN ID is specified as follows:
• The default VLAN ID is 000 (hex).
• The VOICE and DATA VLAN IDs can be specified in the manual
configuration user interface.
• Or, in the case of the VOICE VLAN ID, the VOICE VLAN ID can also
be configured by the DHCP parameter when using the Automatic VLAN
discovery using DHCP approach.
As part of the 802.1Q feature, there is an option to automatically discover the
VOICE VLAN ID using DHCP. This process reduces the configuration steps
since entering data manually (the VOICE VLAN ID) is not required.
When the Automatic VOICE VLAN Discovery using DHCP approach is
used, and the IP Phone has been configured as such, the following steps are
automatically taken to obtain the VOICE VLAN ID:
1 The IP Phone 2001, IP Phone 2002, IP Phone 2004, IP Phone 2007, and
IP Audio Conference Phone 2033 perform an initial DHCP Discovery
Request in the default VLAN.
2 The DHCP server returns a DHCP Ack message with an IP address in the
data VLAN and one or more voice VLAN IDs in the vendor-specific
field.
3 The telephone reads and saves the VOICE VLAN IDs.
IP Phones Description, Installation, and Operation
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