Appendix F: Configuring Dhcp To Auto-Configure Ip Phones - Nortel Secure Network Access Switch 4050 User Manual

Appendix F
Configuring DHCP to auto-configure IP Phones
The DHCP server and the IP Phone 2002, IP Phone 2004, and IP Phone 2007 can
be configured so that the IP Phone automatically obtains its configuration data
from the DHCP server. This feature reduces the administrative overhead
associated with bringing a large number of IP Phones online.
In addition, the DHCP server and the IP Phone can be configured so that the
IP Phone can use the Auto VLAN Discovery feature, which allows the IP Phone
to discover the Phone VLAN ID.
This appendix explains how to:
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•
This appendix is not intended to be a primer on how to set up a DHCP server. The
reader is assumed to have a working knowledge of Windows 2000 Server DHCP
servers. The appendix also does not describe the process used by the IP Phone to
interact with the DHCP server or to boot itself into the Phone VLAN.
To take advantage of the Auto VLAN Discovery feature, two VLANs are
required: one for the phone to boot into initially, in order to communicate with the
DHCP server and learn the appropriate phone VLAN ID, and the second for the
Phone VLAN itself.
configure the IP Phone to obtain its configuration data from a Windows 2000
Server DHCP server
retrieve VLAN information required to take advantage of the Auto VLAN
Discovery feature
Note: It is assumed that the necessary DHCP scopes defining the range
of addresses and lease duration have been created.
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