Thanks all. I tried it, and it worked perfectly... except I can't get it to route beyond the first router. But to my original question, DHCP passes along as prescribed and I can ping between subnets.
Thanks for the help. --Matt Ross Ephrata School District ----- Original Message ----- From: Kurt Buff [mailto:kurt.b...@gmail.com] To: NT System Admin Issues [mailto:ntsysadmin@lyris.sunbelt-software.com] Sent: Fri, 12 Aug 2011 11:28:50 -0700 Subject: Re: DHCP Server and multiple subnets > Not trickery. > > Assuming that there's a router in your environment, you need to put a > helper address on the router for each subnet for which the DHCP server > will be serving addresses. (You can run multiple subnets without a > router, but it's really a bad idea.) > > For instance, on my HP 3400cl core switch, two of my vlans are set up > as follows: > > vlan 111 > name "VLAN111" > ip address 192.168.xx.xx 255.255.255.0 > ip helper-address 192.168.xx.xx > tagged 25-47 > exit > vlan 112 > name "VLAN112" > ip address 192.168.xx.xx 255.255.255.0 > ip helper-address 192.168.xx.xx > tagged 25-47 > exit > > It'll be very similar syntax on a Cisco switch for the helper address. > > The router then forwards the broadcast packet with to the DHCP server. > > Kurt > > On Fri, Aug 12, 2011 at 08:44, Matthew W. Ross <mr...@ephrataschools.org> > wrote: > > Hey list, quick question for ya as my googlefu is not coming up with > concrete answers: > > > > Can a single DHCP server serve up two separate subnets? How does the DHCP > server decide which subnet to place the client (besides reservations)? Does > it just auto-magically figure it out based on where the broadcast is coming > from, or is there other trickery involved? > > > > > > --Matt Ross > > Ephrata School District > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > > > --- > > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > > or send an email to listmana...@lyris.sunbeltsoftware.com > > with the body: unsubscribe ntsysadmin > > > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe ntsysadmin > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin
