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TFTP option 150 for VoIP Phone in dhcpd.conf on Linux



  Since I'm not able to reply to the archived posts from earlier this
year when people were asking how to do this, here is a quick config for
anyone doing a websearch now or in the future. This is an example of how
to use a linux dhcpd DHCP server to hand out ip address leases and
specify the TFTP option 150 for VoIP phones in the dhcpd.conf config
file.

# /etc/dhcpd.conf

ddns-update-style interim;
ignore client-updates;

# Define Custom Options
option option-150 code 150 = ip-address;

# Global Config

option ip-forwarding off;
option nis-domain               "domain.local";
option domain-name              "domain.local";
default-lease-time 21600;
max-lease-time 43200;

subnet 192.168.117.0 netmask 255.255.255.0 {

	option routers			192.168.0.1; 	   	#
Default Gateway
	option subnet-mask		255.255.255.0;
	option broadcast-address 	192.168.0.255;
	option domain-name-servers	192.168.0.10;
	option nntp-server 		192.168.0.10;
	option time-offset		-18000;			#
Eastern Standard Time
	option option-150			192.168.200.10;
# TFTP Custom Option
	next-server				192.168.200.10;
# TFTP Boot

	range dynamic-bootp 192.168.0.200 192.168.0.249;

}

Enjoy.

Josh Myner : Systems Engineer
NETech : http://www.netechcorp.com



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