Administering The Dhcp Server; Configuring Dhcp Option 242 (Sson) - Avaya 9608 Administrator's Manual

Server Administration
static IP data is unassigned manually. In addition, manual entry of IP data is an error-prone
process.
Avaya recommends that:
A minimum of two DHCP servers be available for reliability.
●
A DHCP server be available when the IP deskphone reboots.
●
A DHCP server be available at remote sites if WAN failures isolate IP deskphones from the
●
central site DHCP server(s).
A (HTTP or HTTPS) file server, which may run on the same physical computer as
Communication Manager, provides the 9600 Series SIP IP Telephone with an upgrade file and,
if appropriate, new or updated binary software. See
addition, you can edit the settings file (46xxsettings.txt) to customize deskphone parameters for
your specific environment. For more information, see
Options.

Administering the DHCP Server

This section concentrates on the simplest case of a single LAN segment. Information provided
here can be used for more complex LAN configurations.
!
CAUTION:
Before you start, understand your current network configuration. An improper
CAUTION:
installation will cause network failures or reduce the reliability and performance of
your network.

Configuring DHCP Option 242 (SSON)

9600 Series SIP IP Telephones allow you to specify the value of some configuration parameters
using DHCP option 242 (the default site-specific option). If you have 46xx phones that use
option 176, you can make a copy of an existing option 176. Then, using that copy to administer
DHCP option 242, you can either:
leave any (46xx) parameters the 9600 Series SIP IP Telephones do not support in Option
●
242 to be ignored, or
delete unused or unsupported 9600 IP Series Telephone parameters to shorten the DHCP
●
message length.
Only the following parameters can be set in the DHCP site-specific option for 96xx telephones,
although most of them can be set in a 46xxsettings.txt file as well as described in
SIP Deskphones customizeable system
64 Deskphone SIP 9608, 9611G, 9621G, 9641G Administrator Guide Release 6.0.1
Step 3: Downloading files
Chapter 8: Administering Telephone
parameters.
on page 26. In
9600 Series