Polycom CX5500

Polycom CX5500 Unified Conference Station Administrator’s Guide 1.1.0
Polycom, Inc. 224
VLAN Using DHCP Phone Boot-Up Sequence
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, a value set in the 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