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DHCP / TFTP
The implication of this fact can be seen in the following example. Assume two IP addresses
(hence two possible DHCP leases) and three IP Telephones, two of which are using the two
available IP addresses. When the lease expires for the first two telephones, the third will not
be able to get a lease (even if the other two telephones have been removed from the
network), until the reservation period expires.
The IP Telephone sets the indicated system values to the values of the indicated fields of
the DHCPACK message
Windows NT 4.0 DHCP server
This section contains details on how to verify and configure the DHCP server included in the
Windows NT 4.0 server operating system.
Use
Verifying the DHCP server installation
If it is not, install the DHCP server. If it is installed, then proceed with the
the
Creating a DHCP scope for the IP Telephones
Verifying the DHCP server installation
Use the following procedure to verify whether the DHCP server is installed:
1. Select Start->Settings->Control Panel.
2. Double-click the Network icon.
3. Verify that Microsoft DHCP Server is listed as one of the Network Services on the Services
Tab.
4. If it is listed, continue with the
DHCP server.
404 Avaya Application Solutions IP Telephony Deployment Guide
(Table
91).
Table 91: DHCP setting of system values
System value
Set to
IPADD
The yiaddr field
NETMASK
Option #1 (if received)
GIPADD
The first four octets of Option #3 (if
received)
TFTPSRVR
The first four octets of the siaddr field
Initial configuration
below to verify whether the DHCP server is installed.
sections.
section below. If it is not listed, install the
Initial configuration
and
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