RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

A DHCP Relay is what you want. If a user on Subnet A plugs in to Subnet B, they will end up with a DHCPNACK for their old IP followed by the correct IP. Thanks, Brian Desmond br...@briandesmond.com c - 312.731.3132 Active Directory, 4th Ed - http://www.briandesmond.com/ad4/ Microsoft MVP - htt

Re: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

On Thu, Jul 23, 2009 at 10:38, Matthew W. Ross wrote: > Hey list. > > Since nobody had a good network mailing list, I'll as my question here. > > We have a large flat network which I'm looking at splitting up. It was > 10.x.x.x/8, looking to bring it to several 10.20.x.x/16s. I've got my > config

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

It's a layer 3 function. So, you have to have a layer 3 switch. -Original Message- From: Don Kuhlman [mailto:drkuhl...@yahoo.com] Sent: Thursday, July 23, 2009 3:03 PM To: NT System Admin Issues Subject: Re: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays? So swi

Re: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

So switches can also do dhcp relay ? I just thought the routers could do that. Man am I out of touch. Thanks Don K ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ ~

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

[mailto:mr...@ephrataschools.org] Sent: Thursday, July 23, 2009 1:59 PM To: NT System Admin Issues Subject: RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays? This answers my question exactly. Thank you. If I did decide to drop reserving each-and-every computer, what other me

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

PM To: NT System Admin Issues Subject: RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays? This answers my question exactly. Thank you. If I did decide to drop reserving each-and-every computer, what other methods (and probably stronger methods) of preventing unauthorized compute

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

> From: Matthew W. Ross [mailto:mr...@ephrataschools.org] > Sent: Thursday, July 23, 2009 10:59 AM > To: NT System Admin Issues > Subject: RE: DHCP and multiple Subnets; Multiple DHCP server > or DHCP-Relays? > > This answers my question exactly. Thank you. > > If I di

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

Using the DHCP helper (relay) feature will work. You can set up the multiple DHCP scopes on one or two (for redundancy) servers and the clients will pull the correct DHCP scopes when they hook up. Most modern desktop/laptop clients can handle the switch gracefully as they move from subnet to subnet

Re: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

; - Original Message - > From: David Lum > [mailto:david@nwea.org] > To: NT System Admin Issues > [mailto:ntsysad...@lyris.sunbelt-software.com] > Sent: Thu, 23 Jul 2009 > 10:43:11 -0700 > Subject: RE: DHCP and multiple Subnets; Multiple DHCP server > or D

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

Do you mean that you are creating reservations in DHCP (you say "statically assign")? If that is the case, then what you will have to do is create a reservation in EACH subnet that a given user would hit. Since they are in different subnets, though, it would mean different addresses (or else netwo

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

I don't quite understand the part about statically assigned IPs for individual machines. Does that mean for certain machines only, and the rest get dhcp addresses? There's no need to create separate dhcp servers for each subnet. Create one dhcp server with scopes for each of the subnets. Enab

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

Matthew, No, your DHCP server will dish out the correct IP address by scope. The router has a DHCP helper address which will forward it to the DHCP server. The DHCP server will see what subnet the request came from, and give out a lease for an IP address of the scope assigned to that subnet. For

Re: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

You can configure scopes to serve multiple subnets and networks if you allow DHCP traffic to forward to the server. This is accomplished by assigning the "003 Router" option in the scope options. Each scope with a specified 003 option will only lease addresses that come from that route/network's

RE: DHCP and multiple Subnets; Multiple DHCP server or DHCP-Relays?

"Statically assign" - at the machine, or by DHCP reservation? We have one DHCP server here and it's handing several different subnets Dave -Original Message- From: Matthew W. Ross [mailto:mr...@ephrataschools.org] Sent: Thursday, July 23, 2009 10:38 AM To: NT System Admin Issues Subject