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DHCP / TFTP
DHCP software alternatives
Two DHCP software alternatives are common to Windows operating systems:
Windows NT 4.0 DHCP Server
Windows 2000 DHCP Server
Any other DHCP application might work.
It is the customer's responsibility to install and configure the DHCP server correctly. This
appendix is limited to describing generic administration for Avaya IP Telephones.
DHCP generic setup
Set up of a DHCP server involves the following top-level tasks:
1. Install the DHCP server software according to vendor instructions.
2. Configure the DHCP server with the available IP addresses for the Avaya IP Telephones.
3. Administer the lease duration ("Infinite" is recommended).
4. Administer the gateway (router) IP addresses.
If more than one address is listed, the total list may contain up to 127 total ASCII characters,
with IP addresses separated by commas with no intervening spaces.
5. Configure the Subnet mask.
6. Administer Option 6 (DNS servers address list).
If more than one address is listed, the total list may contain up to 127 total ASCII characters,
with IP addresses separated by commas with no intervening spaces. At least one address
in Option 6 must be a valid, nonzero, dotted decimal address. Otherwise, DNS will fail.
7. Administer Option 15 (DNS Domain Name).
This string should contain the domain name to be used when DNS names in system
parameters are resolved into IP addresses. This domain name is appended to the DNS
name before the IP Telephone attempts to resolve the DNS address. Option 15 is
necessary if you want to use a DNS name for the TFTP server. Otherwise, you might
specify a DOMAIN as part of TFTP customization, as indicated in DNS Addressing on page
4-24.
402 Avaya Application Solutions IP Telephony Deployment Guide
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