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:
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
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
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.
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
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
: 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 DHCP-Relays?
Statically assign - at the machine, or by DHCP reservation
[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 did decide to drop reserving each-and-every computer,
what other
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
computers from getting on the network?
We
: 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
methods (and probably stronger methods
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! ~
~ http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/ ~
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 switches
On Thu, Jul 23, 2009 at 10:38, Matthew W. Rossmr...@ephrataschools.org 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.
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 -
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