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Re: [K12OSN] LTSP Setup question.



Terrell Prudé, Jr. wrote:


You're very lucky indeed, unless you're running your K12LTSP servers in the "standard" 2-NIC architecture. Having eight DHCP servers serving the same broadcast domain can be very, very dangerous. Yes, I know some

snip




--TP _____________________



When running the domain in a private IP block (10.255 and 192.168) you can run as many DHCP servers as you can make subnets.


an example:


A network, 10.255.0.1/255.255.248.0, has 2046 usable addresses, from 10.255.0.1 to 10.255.7.254 (255 is broadcast and can't be allocated for other use.


Each of four DHCP servers are set up to use 10.255.0.1/21 as RANGE and DHCP server 1 is using a SCOPE of 10.255.0.1 to 10.255.1.255
DHCP server 2 is using a SCOPE of 10.255.2.0 to 10.255.3.255
DHCP server 3 is using a SCOPE of 10.255.4.1 to 10.255.5.255
DHCP server 4 is using a SCOPE of 10.255.6.0 to 10.255.7.255


No overlaps in the scopes ensures that there won't be address-clashes on the network.

If you subnet using a further 1 bit, then you can have twice as many DHCP servers, each serving half as many clients.


cheers


Samps


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