Cool! We’re done with the theory behind Windows networking; now, armed with your knowledge, you know enough to make effective use of the tools that I introduce in this section. I’ll start with network-layer diagnostics, and then move on to resources and process tracing tools.
Your basic IP configuration can be shown using ipconfig (Windows NT family) or winipcfg (Windows 9x family).
Both of these commands enable you to manually release or renew your DHCP lease, or to display basic TCP/IP information, whether or not your station has been configured for DHCP.
If you’re using Windows 9x, you should actually use winipcfg /all because this shows all configuration, not just the IP address and netmask. ...