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As I understand it, you have many clients all located on the same physical
ethernet.
On Mon, 5 Apr 1999, Joe McGerald wrote:
> I have a large lab that I am trying to service with dhcpd. the clients are
> all running win95. I have set up multiple subnet statements in dhcpd.conf
> in hopes of circumventing the class C license limit, but I am running out
> of addresses when the first subnet is filled.
>
> What should I do to get around this problem?
Make the declarations match the physical situation.
> # IP subnets that are alone on their physical wire should be declared by
> # themselves. ISC dhcpd may still refer to them as shared networks in
> # log messages, but this is simply an artifact of the underlying data
> # structures.
> #
> # Note that options can be specified in the subnet declaration which
> # supersede the global options specified earlier.
shared-network LAB {
>
> # Lab's 1st subnet (10.51.21.0)
> subnet 10.51.21.0 netmask 255.255.255.0 {
> range dynamic-bootp 10.51.21.10 10.51.21.254;
> option routers 10.51.21.1;
> option subnet-mask 255.255.255.0; }
>
> # Lab's 2nd subnet (10.51.22.0)
> subnet 10.51.22.0 netmask 255.255.255.0 {
> range dynamic-bootp 10.51.22.10 10.51.22.254;
> option routers 10.51.22.1;
> option subnet-mask 255.255.255.0; }
>
> etc ...
> ...
}
Alternately, you can define networks which are larger than
a Class C. For example,
# Network with ~1000 clients
subnet 10.51.40.0 netmask 255.255.252.0 {
range 10.51.40.10 10.51.43.254;
option routers 10.51.40.1;
option subnet-mask 255.255.252.0; }
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