[K12OSN] LTSP Setup question.

[Samps]

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