help,,,,IP problem that is affecting the entire LAN

Hi
im trying to troubleshoot a network problem that is affecting the entire
LAN.....

We have a network with 10-20 nodes connected,, in a star topology,
connected to a D-link switch (DES-1016R+) that connects to a 3com 3C857
gateway that acts as a DHCP Server that also manange internet connection
from the cable modem.

In our LAN we a have printers in various locations connected to D-link
DP-300+ Printer server, that are connected to D-link 10/100fast Ethernet
Switch"s and last D-link switch (DES-1016R+) that connects to a 3com
3C857 gateway,,,all printers and computers in the LAN are connected via this
infrastructure.


Recently we have had a server added in our LAN to act as a file server and
application server running W S 2003 with a domain Add 192.168.0.1,

the problem is that all PC on the LAN loss connection by automatically
obtaining the server domain 192.168.0.1 instead of 3com 3C857 gateway IP
192.168.1.1 where all computer connect to.


I would like to know if this symptoms are caused by network hardware
inability to to handle the server, or the server configuration.

Assuming all computers and server are in a physical subnet, why do you setup the server use different IP range? Also have enable DHCP on the server?

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
"momed" <(E-Mail Removed)> wrote in message news:BC19B12A-2E70-4F89-83B1-(E-Mail Removed)...
Hi
im trying to troubleshoot a network problem that is affecting the entire
LAN.....

We have a network with 10-20 nodes connected,, in a star topology,
connected to a D-link switch (DES-1016R+) that connects to a 3com 3C857
gateway that acts as a DHCP Server that also manange internet connection
from the cable modem.

In our LAN we a have printers in various locations connected to D-link
DP-300+ Printer server, that are connected to D-link 10/100fast Ethernet
Switch"s and last D-link switch (DES-1016R+) that connects to a 3com
3C857 gateway,,,all printers and computers in the LAN are connected via this
infrastructure.


Recently we have had a server added in our LAN to act as a file server and
application server running W S 2003 with a domain Add 192.168.0.1,

the problem is that all PC on the LAN loss connection by automatically
obtaining the server domain 192.168.0.1 instead of 3com 3C857 gateway IP
192.168.1.1 where all computer connect to.


I would like to know if this symptoms are caused by network hardware
inability to to handle the server, or the server configuration.

You have introduced a "rouge" DHCP Server inot the LAN,...get rid of it.
Next time one of the machine gets a bad address, run IPCONFIG /All and it
will show you the IP# of the DHCP machine you need to do something about.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/t...dance/2004.asp
http://www.microsoft.com/isaserver/t...dance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp
-----------------------------------------------------


"momed" <(E-Mail Removed)> wrote in message
news:BC19B12A-2E70-4F89-83B1-(E-Mail Removed)...
> Hi
> im trying to troubleshoot a network problem that is affecting the entire
> LAN.....
>
> We have a network with 10-20 nodes connected,, in a star topology,
> connected to a D-link switch (DES-1016R+) that connects to a 3com 3C857
> gateway that acts as a DHCP Server that also manange internet connection
> from the cable modem.
>
> In our LAN we a have printers in various locations connected to D-link
> DP-300+ Printer server, that are connected to D-link 10/100fast Ethernet
> Switch"s and last D-link switch (DES-1016R+) that connects to a 3com
> 3C857 gateway,,,all printers and computers in the LAN are connected via
this
> infrastructure.
>
>
> Recently we have had a server added in our LAN to act as a file server
and
> application server running W S 2003 with a domain Add 192.168.0.1,
>
> the problem is that all PC on the LAN loss connection by automatically
> obtaining the server domain 192.168.0.1 instead of 3com 3C857 gateway
IP
> 192.168.1.1 where all computer connect to.
>
>
> I would like to know if this symptoms are caused by network hardware
> inability to to handle the server, or the server configuration.
>
>