How to tell where DHCP server is?

[CathodeRay]

Simple question, I'm sure...

How can I tell where the DHCP server is (IP address and/or device name)?

We want to assign static IPs to some computers/printers and we want to configure the DHCP server to exclude those addresses from those it gives out.

 

[Davetoo]

Command prompt - IPCONFIG/ALL, DHCP is listed.

Curious, you don't know where your DHCP server is?

I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.

 

[vacunita]

I'm not following, if this is in a network, you should know what machine is your DHCP.

The only advice, i could give, is find the machine that has the same IP address as, the Default gateway in the receiving PC's. that is usually the DHCP, although it doesn't necessarily have to be.

It could be a router, or something else, there's really no way of knowing, but again, how does one not know what machine is handing out addresses, in ones network.



----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

 

[stduc]

On a PC that is on automatic IP addressing, open a command prompt [run >cmd] and type ipconfig/all

you will get this

IP Address. . . . . . . . . . . . : 192.168.0.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1

or something similar

However - as to where that device is physically you will have to go search LOL

[navy]When I married "Miss Right" I didn't realise her first name was 'always'. LOL[/navy]

 

[CathodeRay]

Uh, thanks all... of course, that all seemed very simple. Here's my dumb mistake:

(First of all, I inherited this LAN, so its topology is new to me.)

I remotely connected to one of the workstations and gave it a static IP address... then I realized that I better check the DHCP server to make sure it doesn't try to provide that same IP later to another machine... of course, after I gave the workstation a static IP, I no longer saw DHCP in "ipconfig/all"... hence my question.

Thanks for your time... sorry to have burdened you with my oversight.

By the way, DHCP is being handled by a PIX 501.

 

[edfair]

If you need to exclude some addresses, and this is your first contact with a PIX, you may have a learning curve in front of you, based on my first one.

Ed Fair
Give the wrong symptoms, get the wrong solutions.

 

[CathodeRay]

Right you are.... It's a little different than a retail LinkSys...

 

[Davetoo]

You could have simply give it back a DHCP, done an ipconfig/renew, then ipconfig/all to see what the DHCP server was, then put the static IP back on.

If you can do something, you can usually undo it to get back to where you were.

I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.