Hi Gerald, Thanks for taking the time to reply. Yes, the network interface on the computer is active. If I connect it directly to the modem/router, it immediately recieves an IP address using DHCP. The cisco switch is also setup to use DHCP as its address mode. I'm not too sure how to go about checking the ARP cache.
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We've got a Cisco SLM2048 switch. Once 15 ports are active, the switch stops recognizing connections on other ports. So, if 15 computers were connected to the network, and a 16th computer was to be switched on, it would be unable to access the network. I suspect the problem is faulty hardware, since the computer regains access if connected directly to our router, or if one of the 15 is disconnected. Any help and ideas on what to check, would be appreciated. Oh, it's a 48 port switch - http://www.cisco.com/en/US/products/ps10002/index.html Thanks, Harsha
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