<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>ISC dhcpd will hand an address out based on the interface it came in on. If if eth0 has 203.0.113.1/25 and eth1 has 203.0.113.129/25, and the DHCP server is authoritative for those two subnetworks, then when it receives a request on eth0 for an address it will issue an address in 203.0.113.0/25; when it receives a request on eth1 it will issue an address in 203.0.113.128/25. </div><div><br>Sent from my iPad</div><div><br>On Jan 22, 2015, at 7:37 PM, "Robert L. Harris" <<a href="mailto:robert.l.harris@gmail.com">robert.l.harris@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div>Ok, so if I have 2 subnets:<br><br>172.20.1/24 on vlan 21<div>172.20.2/24 on vlan 22</div><div><br></div><div>If a host plugs into a port assigned to vlan 22, how do I make sure dhcpd gives out the right address? That's the part of the designation I'm missing.</div><div><br></div><div>Robert</div><div><br></div><br><div class="gmail_quote">On Thu Jan 22 2015 at 5:17:25 PM James Sumners <<a href="mailto:james.sumners@gmail.com">james.sumners@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">You just have to define the subnets in the config and put each subnet's pool within its respective block. No need for aliased IPs. <span></span><br><br>On Thursday, January 22, 2015, Robert L. Harris <<a href="mailto:robert.l.harris@gmail.com" target="_blank">robert.l.harris@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br><div>Anyone have a dhcpd serving multiple subnets to multiple vlans from a single server on a trunk they can share configs? I don't want to spawn a bunch of servers and if I can do it with a single interface that would be ideal. If I have to go with eth0.0, eth0.1, etc that's a good second choice. </div><div><br></div><div>Robert</div><div><br></div>
</blockquote><br><br>-- <br><div dir="ltr"><div><div dir="ltr"><div>James Sumners<br><a href="http://james.sumners.info/" target="_blank">http://james.sumners.info/</a> (technical profile)</div><div><a href="http://jrfom.com/" target="_blank">http://jrfom.com/</a> (personal site)</div><div><a href="http://haplo.bandcamp.com/" target="_blank">http://haplo.bandcamp.com/</a> (band page)</div></div></div></div><br>
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