samba - Jul 1997 - DHCP & WINS

I have a little problem. I realize this may not be the right place to
ask this, but I'll bet luke or someone else here knows the answer :->

I'm not the site network administrator, and she's not willing/able to
figure out the changes necessary to fix a small problem that cropped up
this week:

For months my department's PCs have been booting and configuring
themselves from the site WinNT3.51 DHCP server. This worked fine and did
all the normal things for my clients: set IP addresses, subnet mask,
default gateway *and* WINS server. However, something happened (no one
seems to know what) that took the DHCP server off my clients' network
segment. It's still working fine on other segments. In fact, the DHCP
server appears to have disappeared entirely from the network -- I can't
even ping it from segments that are still being configured correctly
(from the same server responding on a different IP, I think!)

While the site network guys are trying to figure it out from their end,
my clients are stuck!

I know I have several options for fixing these things. One is to go out
and give each PC a static IP from the subnet I have been given
responsibility for. However, I do have a server capable of running DHCP
(VMS) on the same segment with these PCs. So I'd like to configure these
PCs from my server. I've tried this and everything works fine -- for the
basic stuff: IP, subnet mask, gateway, DNS. But how do I specify WINS
server?

I assume it can be specified using a generic vendor tag in my dhcptab
file: Tnn=a.b.c.d
My question is: does anyone know what the value for <nn> is?

Hi there,

> I assume it can be specified using a generic vendor tag in my dhcptab
> file: Tnn=a.b.c.d
> My question is: does anyone know what the value for <nn> is?
The WINS server is 44 (decimal).  You can find the other options in the 
NT Resource Kit version 3.5, section 13.5.5.  Alternatively, look in the 
RFC (the number escapes me for the moment ;)... WINS servers are listed 
as 'NetBIOS name servers'.

Generally, the option will require the parameters in hex form, so 
'T44=01020304' specifies a WINS server at '1.2.3.4'.

  - Bob


----------------------------------------------------------------------------
        "THE DAY TODAY - Because FACT times IMPORTANCE equals NEWS!"
----------------------------------------------------------------------------
  Bob "Mince" Franklin ~{]                            Tel. (0118) 931
8432
  Systems and Communications                          Fax. (0118) 975 3094
  Computer Services Centre                      R.C.Franklin@reading.ac.uk
  University of Reading, U.K.         http://www.compsoc.man.ac.uk/~mince/
----------------------------------------------------------------------------

I got several responses to my question and thought I'd summarize to the
list....

Original Problem:
>I know I have several options for fixing these things. One is to go out
>and give each PC a static IP from the subnet I have been given
>responsibility for. However, I do have a server capable of running DHCP
>(VMS) on the same segment with these PCs. So I'd like to configure these
>PCs from my server. I've tried this and everything works fine -- for the
>basic stuff: IP, subnet mask, gateway, DNS. But how do I specify WINS
>server?
>
>I assume it can be specified using a generic vendor tag in my dhcptab
>file: Tnn=a.b.c.d
>My question is: does anyone know what the value for <nn> is?
Best response was this one...
>----------
>From: 	Dutchyn, Chris[SMTP:ChrisDutchyn@aec.ca]
>Sent: 	Friday, July 18, 1997 15:10
>To: 	Heron, Steve
>Subject: 	DHCP and WINS settings
>
>Steve:
>
>You need to place two Tnn= values into your DHCP table.  The first is
>the WINS server IP address, as
>
>	T44=0xAABBCCDD
>
>where AA, BB, CC, DD are the hex-equivalents of the WINS server IP
>address.  Then, you need to ensure that your PCs understand how to
>operate their lookup functions.  Microsoft supports 4 operating modes:
>
>	B-mode:	0x01	broadcast for addresses only (i.e. ignore WINS
>server)
>	P-mode:	0x02	point-to-point (never broadcast, if WINS doesn't
>have it, then it isn't available)
>	M-mode:	0x04	?: try broadcast, failing that, use WINS (?)
>		H-mode:		0x08	hybrid: try WINS; failing that,
>broadcast!
>
>If you have a WINS server or have multiple subnets, never use B-mode.
>P-mode is okay, provided everything registers itself.  H-mode is the
>most flexible.  To tell the PCs what mode to operate in, use:
>
>	T46=0xZZ
>
>where ZZ is from the above mode table.
Also this option which I don't need (from Richard.Hellier
<rlh@cppuk.co.uk>):
 T47 : NetBIOS Scope option

Thanks everyone for your help!