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− | In order to provide option 150 (or other custom options) two configuration entries are required, first, in the top level of the configuration file located at /etc/dhcp/dhcpd.conf you need to define your custom option:
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− | option voip-tftp-server code 150 = { ip-address };
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− | Then, in the subnet stanza for where you need to provide the information you'll configure the option with the appropriate value.
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− | subnet 192.168.0.0 netmask 255.255.255.0 {
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− | [...]
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− | option voip-tftp-server 10.101.0.10;
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− | }
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− | If you place the option definition in the subnet stanza then dhcpd will not work.
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− | shareimprove this answer
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− | edited Mar 14 '13 at 18:58
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− | answered Mar 14 '13 at 17:09
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− | johnf
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− | 629410
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− | add a comment
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− | up vote -1 down vote
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− | It can be:
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− | option tftp-servers code 150 = array of ip-address;
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− | option tftp-servers 10.20.10.1, 10.20.11.1;
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− | shareimprove this answer
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− | http://www.redhat.com/archives/redhat-list/2004-December/msg00272.html
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− | Since I'm not able to reply to the archived posts from earlier this
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− | year when people were asking how to do this, here is a quick config for
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− | anyone doing a websearch now or in the future. This is an example of how
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− | to use a linux dhcpd DHCP server to hand out ip address leases and
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− | specify the TFTP option 150 for VoIP phones in the dhcpd.conf config
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− | file.
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− | # /etc/dhcpd.conf
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− | ddns-update-style interim;
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− | ignore client-updates;
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− | # Define Custom Options
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− | option option-150 code 150 = ip-address;
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− | # Global Config
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− | option ip-forwarding off;
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− | option nis-domain "domain.local";
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− | option domain-name "domain.local";
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− | default-lease-time 21600;
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− | max-lease-time 43200;
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− | subnet 192.168.117.0 netmask 255.255.255.0 {
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− | option routers 192.168.0.1; #
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− | Default Gateway
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− | option subnet-mask 255.255.255.0;
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− | option broadcast-address 192.168.0.255;
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− | option domain-name-servers 192.168.0.10;
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− | option nntp-server 192.168.0.10;
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− | option time-offset -18000; #
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− | Eastern Standard Time
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− | option option-150 192.168.200.10;
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− | # TFTP Custom Option
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− | next-server 192.168.200.10;
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− | # TFTP Boot
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− | range dynamic-bootp 192.168.0.200 192.168.0.249;
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− | }
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