Network config help. Router > Server > Switch > Computers

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Hi Everyone,

This is my first post, so be gentle with me :)

I need some networking help please.

We have;

- 2wire 4 port ADSL router
- Server - Running SBS with 2 NICs
- 48 port switch
- A load of computers running a mix of XP and vista


One of the server NICs plugs into the router, the other into the
switch. The router doesnt plug into the switch.

The server gets and internet from the switch with no problem.

I've plugged all the client computers into the switch - so in theory
they would connect to the server > get their ips (dhcp) > then gain
access to the net via the server.

However this is not the case. no client computer can ping or rdp into
the server, altough when doing IPCONFIG it seems to have got an ip from
the server.

If i plug a computer directly into the servers NIC (not the internet
one) I can RDP into it, and get an internet connection.

Why is does it stop working once i plug them both into the switch?

any help is greatly appreciated as this one has been racking my brain
for some time now

Thanks

Joe


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