Jelly Bean Posted June 9, 2009 Posted June 9, 2009 Using the Ipconfig Diagnostic Utility for Network Connections. The following commands are run from Command Prompt to determine or rule out/in network/internet issues. Each command starts with ipconfig. Each command would be written: Example: ipconfig /all (ipconfig space /all. The most common commands we use are as follows: ipconfig Show information ipconfig /all Show detailed information ipconfig /renew Renew all adapters ipconfig /renew EL* Renew any connection whose name starts EL ipconfig /release *Con* Release all matching connections.Example: Local Area Connection 1 or Local Area Connection2 Note: That the /Release and /Renew options can be used only if the system is configured with DHCP. /? Displays this help message /all Displays full configuration information /release Releases the IP address for the specified adapter /renew Renews the IP address for the specified adapter /flushdns Purges the DNS Resolver cache /registerdns Refreshes all DHCP leases and reregisters DNS names /displaydns Displays the contents of the DNS Resolver Cache /showclassid Displays all the DHCP ClassIds allowed for the specified adapter /setclassid Modifies the DHCP ClassId Notes: The adapter connection name can use wildcard characters (* and ?). The default (with no parameters specified) is to display only the IP address, subnet mask, and default gateway for each adapter that is bound to TCP/IP. For /all, Ipconfig displays all of the current TCP/IP configuration values, including the IP address, subnet mask, default gateway, and Windows Internet Naming Service (WINS) and DNS configuration. For /release and /renew, if no adapter name is specified, the IP address leases for all adapters that are bound to TCP/IP are released or renewed. For /setclassid, if no ClassId is specified, the ClassId is removed. (Information Taken Directly From Microsoft Website.) Rwy'n ceisio fy ngorau......................
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