DSL-2640t - can't ping or find other PC?

dustbin — Sun, 04 Nov 2007 10:08:42 +0800

I bought this DLink DSL-2640t yesterday, it is able to connect to streamyx, and 2 laptops plus 1 desktop can connect to it and surf the internet.

Problem is, I can't do ping or file sharing among the 3 machines. When I ping the other machine, it shows "Request Timeout". But it able to ping the machine IP itself, and the modem.

Eg. Modem IP - 192.168.1.1, Machine #1 - 192.168.1.2, Machine #2 - 192.168.1.3, Machine #3 - 192.168.1.4

Ping from Machine #1 to Modem - OK
Ping from Machine #2 to Modem - OK
Ping from Machine #3 to Modem - OK
Ping from Machine #1 to Machine #2 - Request Timeout
Ping from Machine #1 to Machine #3 - Request Timeout
Ping from Machine #2 to Machine #1 - Request Timeout
...
...

Is there any configuration to be done in the modem?

Thanks.

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DSL-2640t - can't ping or find other PC?