Imagine you have two laptops, one with a working Ethernet configuration, call this laptop A, the other with an Ethernet connection which has "limited or no connectivity", call it laptop B (B for "bad").
To get B working, do ipconfig /all on A, which will return the TCP/IP configuration for all adapters (such as Ethernet adapter for Bluetooth, Wireless LAN Adapter, Ethernet adapter for LAN connection, Tunnel adapter LAN and so forth).
Pay special attention to DHCP and DNS server configurations.
Note on some Vista machines/accounts you may not be able to ping: "unable to contact IP driver error code 5" indicates this problem.
Tuesday, 18 August 2009
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