Are you meaning that you need to forward a DHCP request over more than 1 router? That is, requestor is on subnet1, makes a request, router2 forwards it over subnet2 to router2, which then forwards it to the DHCP server on subnet3. I haven't done that, nor heard of anyone who does, but it might be possible. That would be interesting. If that's the situation, however, I'd use it to make a case to collapse those two routers into one, if circumstances permitted.
Or do you mean that you have other routing issues? Kurt On Fri, Aug 12, 2011 at 11:38, Matthew W. Ross <mr...@ephrataschools.org> wrote: > 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 > > ~ 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
