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We have one TP-Link ADSL (Modem/Router) and one D-Link 5-port switch connected via a CAT5 cable. The TP-Link has configured ADSL internet connection and is working. We also have 4 client pc (all Windows 7 OS) that connect to one workgroup via the D-Link switch in a star network structure:

SU538938 example

How do I configure clients and switch (IP and other settings) so that internet is shared by the network and all four clients can connect?

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Would be important to know whether your modem has a built in router (i.e. whether its able to establish the connection on its own or whether a computer in the network has to do it). –  Mario Jan 20 '13 at 11:32
    
yes, the modem has a built in router and the internet access on modem is ok. –  Poorhoseini Jan 20 '13 at 11:35
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You shouldn't have to worry about any further configuration. Let all clients determine their IP by DHCP (the router should answer them and assign them a dynamic IP).

If this doesn't work, either ensure the DHCP server of the modem/router is active or assign them manual IPs being in the same network as the modem/router. Usually it's enough to use the modem/router's IP and change the last octet (e.g. from .1 to .2). Also make sure you're using the same network mask. Also set the modem/router's IP to be your "Default Gateway" as well as the "Primary DNS". Once this is done, all internet access should work and clients should be able to talk to each other as well.

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I need that clients has static ip, so I set the 192.168.0.xxx ip on client and DHCP on swith is off, Switch IP is 192.168.0.1 and Modem/router IP is 192.168.1.1 but client has no internet. –  Poorhoseini Jan 20 '13 at 12:18
    
Have you set your default gateway and DNS server? Both should be your modem/router's IP. –  Mario Jan 20 '13 at 12:39
    
yes I set Gateway and DNS to 192.168.1.1 it's modem IP's –  Poorhoseini Jan 20 '13 at 12:45
    
And still doesn't work? Are you able to ping others in network and/or the router by name and/or IP? –  Mario Jan 20 '13 at 20:38
    
yes, I can ping these –  Poorhoseini Jan 21 '13 at 7:50
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