Assigning A Vlan Id Using Dhcp - Polycom 1725-11530-310 Administrator's Manual

Assigning a VLAN ID Using DHCP

Note
To assign a VLAN ID to a phone using DHCP:
In the DHCP menu of the Main setup menu, set VLAN Discovery to
>>
"Fixed" or "Custom".
When set to "Fixed", the phone will examine DHCP options 128,144, 157
and 191 (in that order) for a valid DVD string.
When set to "Custom", the value set in "VLAN ID Option" will be
examined for a valid DVD string.
DVD string in the DHCP option must meet the following conditions to be
valid:
— Must start with ?VLAN-A=? (case-sensitive)
— Must contain at least one valid ID
— VLAN IDs range from 0 to 4095
— Each VLAN ID must be separated by a ?+? character
— The string must be terminated by a ?;?
— All characters after the ?;? will be ignored
— There must be no white space before the ?;?
— VLAN IDs may be decimal, hex, or octal
For example:
The following DVD strings will result in the phone using VLAN 10:
VLAN-A=10;
VLAN-A=0x0a;
VLAN-A=012;
If a VLAN tag is assigned by CDP, DHCP VLAN tags will be ignored.
Miscellaneous Administrative Tasks
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