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ttist25

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Using 3Com LanModem with Win2K DHCP Server - is it possible?

Hey there,

I have a client with a small network (8PC's running 98 and XP, and a 2k PDC running DHCP server).  They are using a 3Com LanModem to connect to a local dial-up ISP.  

Is there a way to allow the clients to obtain IP's from the DHCP server on the 2K machine while still allowing them to access the Internet via the LanModem?

The local clients are receiving an error message stating, in essence, that there are no more available WAN connections on the lanModem.  I have gone in to the lanModem and released the old workstation connections but it seems to dole out these connections based on its own DHCP server (which is disabled).

I'd really like to keep the DHCP server on the 2K machine running as the client is part of a statewide network and if the lanModem resets to the default config (192.168.x.x) we can't see the local machines from our remote site.

TIA

B  
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kminfotech

Could you incorporate proxy service (ISA on your W2K box or Squid with a cheap Linux box) and use this as the connection to the internet?

Alternatively, you could use internet connection sharing and have the server connect to the lanModem and the workstations connect to the server.
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ASKER

Hi kminfotech.

I'm providing contract support for this network in an emergency capacity while they are trying to fill a vacant position so I'm hesitant to to mess with the server too much.

Are you implying that it can't be done otherwise?  I was hoping to find a setting in the LanModem that would allow me to do this.

Thanks so much for your response.
Not a lanModem expert, but found this document on 3com's site

http://support.3com.com/infodeli/tools/remote/ocremote/brouters/userguid.pdf

Page 13 indicates the 4 connections are the maximum (perhaps simultaneous? since you have 8 PCs already???)...

regardless, a proxy server might improve performance of the ISDN connection (for surfing) and would definitely solve the connections issue.

Sorry couldn't be more help but will dig around a bit.
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kminfotech

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ASKER

Ok - I think I've got it fixed.

The LanModem actually allows 25 connections.  What I did was I reserved the addresses .100-.125 in the Workstation configuration table.  Even though the workstation names are "Unknown1" through "Unknows25" it seems to be working with the specified IP's.  

I'm not sure if the Workstation name field is a netbios name or if it's just a name to make configuration easier.

Anyway, it seems to be working.  We'll see what happens when the leases expire.

I'll award the points for your work km.

Thanks so much.

B