Configure TFTP Option 66 and Option 150 with dhcpd
Friday, November 6, 2009 @ 01:11 AM
Here is a copy of the top portion of my /etc/dhcpd.conf file. Using this configuration you should be able to setup any TFTP bootable device to look to your TFTP server for configuration files. For example Cisco 79xx series phones, or SPA5xx series phones.
option tftp150 code 150 = string;
option tftp66 code 66 = string;
option tftp150 code 150 = string;
option tftp66 code 66 = string;
DHCPARGS=eth1;
subnet 192.168.1.0 netmask 255.255.255.0
{
option routers 192.168.1.1;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.1.1,;
option tftp150 ”192.168.1.1″;
option tftp66 “192.168.1.1″;
range 192.168.1.10 192.168.1.150;
}
I would like to know the following scenario:
I want to put Option 66 is the first choice and Option 150 is the second choice. What happens if Option 66 is not working due to no DNS server is available, will the phone use the option 150 after failed to reach the tftp server?
I am using Option 66 with hostname instead of IP Address.
Please advise.