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Old 11-15-2005, 07:13 PM   #1
hueofwind
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any problem if we run two DHCP servers?


HI:

Last week our DHCP server down so that many machines cannot get their IP address. This week we are going to run two DHCP servers as backups to each other. Both servers share the same dhcpd.conf and they only use manual IP assignment (fixed-address).

Will there be any problems if we do so? What will happen if a PC receives two DHCPOFFER with same IP addresses or different addresses?

Henry
 
Old 11-15-2005, 08:22 PM   #2
homey
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In Linux, there is dhcp failover which allows both servers to use the same subnet. This uses primary and secondary dhcp servers.
Here is an excellent article on the subject with examples.
http://www.madboa.com/geek/dhcp-failover/
 
Old 11-15-2005, 10:21 PM   #3
hueofwind
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Thanks. It's a useful article.

How can I make sure that on my machine is ISC DHCP? Does it exist on all kinds of linux?
 
Old 11-15-2005, 10:31 PM   #4
homey
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From the article:
Quote:
Starting with version 3.0, the ISC DHCP server offered failover capabilities that allow network administrators to offer a more robust DHCP service.
On my FC4 box, I typed: dhcpd --help to see what version is installed.
Internet Systems Consortium DHCP Server V3.0.2-RedHat
 
  


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