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Old 8th May 2014
azdps azdps is offline
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Default dhcpd.conf question

I want my dhcpd server to serve only the specified static ip addresses. My dhcpd.conf looks like this:

Code:
option  domain-name "ph.comcast.net";
option  domain-name-servers 68.105.28.12, 68.105.29.12, 68.105.28.11;

subnet 10.255.255.0 netmask 255.255.255.0 {
   option routers 10.255.255.1;
   range 10.255.255.100 10.255.255.101;

   host PRIMARY {
      fixed-address 10.255.255.100;
      hardware ethernet bc:66:f4:65:66:62;
   }

   host NETBOOK {
      fixed-address 10.255.255.101;
      hardware ethernet 00:33:b1:43:33:18;
   }
I'm not clear on how I would proceed with the range option. I tested by removing the line:

Code:
range 10.255.255.100 10.255.255.101;
Appears to work perfectly fine without it. If I only want only static ip addresses served then is the appropriate solution to just remove the range option?
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Old 8th May 2014
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Quote:
Originally Posted by azdps View Post
Appears to work perfectly fine without it. If I only want only static ip addresses served then is the appropriate solution to just remove the range option?
I believe this is correct. Have a look at dhcpd.conf(5) :

Quote:
Originally Posted by oman
For any subnet on which addresses will be assigned dynamically, there must be at least one range statement.
Turning that around, if you don't want to serve dynamic addresses, because you only want to serve static, then no range should be needed.
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Old 8th May 2014
azdps azdps is offline
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Thanks for the clarification, I appreciate it.
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Old 8th May 2014
ocicat ocicat is online now
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Quote:
Originally Posted by azdps View Post
I'm not clear on how I would proceed with the range option. I tested by removing the line:

Code:
range 10.255.255.100 10.255.255.101;
Appears to work perfectly fine without it. If I only want only static ip addresses served then is the appropriate solution to just remove the range option?
range is required if dynamic addresses are to be provided. If you only want to manage static addresses, the range statement is not necessary.

Besides reading dhcpd.conf(5) as pointed out by IdOp, you may benefit from the short discussion found in Section 6.4.2 of the FAQ.

Last edited by ocicat; 8th May 2014 at 05:46 PM. Reason: added missing participle
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Old 11th May 2014
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Actaully dhcpd.conf man pages are must read for anybody who is maintaining DHCP server whether the one from the base or ISC DHCP from the ports.
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