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Re: [K12OSN] dhcpd.conf trouble



On Fri, 4 Nov 2005, Julius Szelagiewicz wrote:

Dear Folks,
	I'm installing a Mitel 3340 IP phone system that needs to co-exist
with k12ltsp. The Mitel docs tell me to run the phones on their own VLAN.
Fine, dhcp is served on eth0 - 192.168.30.0/24, the Mitel box goes on this
segment too, the VLAN for phones will be 192.168.31.0/24. According to the
docs I need to add the following lines to dhcpd.conf:

#option option-03 code 03 = string;
#option option-130 code 130 = text;
#option option-132 code 132 = string;
#option option-133 code 133 = string;
#option option-03  = "192.168.30.254";
#option option-128 = "192.168.31.254";
#option option-129 = "192.168.31.254";
#option option-130 = "MITEL IP PHONE";
#option option-132 = 2;
#option option-133 = 6;

When I add them uncommented and restart dhcpd, the PCs on the 192.168.30.0
segment get addresses all right, but default gateway and DNS are not set.
I seem to be missing something obvious. Thanks, julius

P.S. If you know of a good tutorial on VLANs, please send me a link, I
must have been dozing off when that was covered :-)


One of the school districts I support happens to have the same setup as
you do ;-)

Here is the solution I came up with for them....


	option option-130 code 130 = text;
	option option-132 code 132 = string;
	option option-133 code 133 = string;

        subnet 10.20.0.0 netmask 255.255.128.0 {
                default-lease-time 86400;
                max-lease-time 864000;
                range 10.20.2.1 10.20.3.254;
                option routers 10.20.1.1;
                option subnet-mask 255.255.128.0;
                if (option vendor-class-identifier = null) {
                        option option-130 "MITEL IP PHONE";
                        option option-132 0000:0000:0000:0002;
                        option option-133 0000:0000:0000:0005;
                }
        }



The big trick is zero-padding options 132 & 133.

-Eric


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