ipconfig & ping

APIPA (Automatic Private IP Addressing)

A static IP address (169.254.x.x) automatically assigned by DHCP, cannot connect to the Internet with this IP address

Ping Own IP Address

Checks connection to own computer

ipconfig /release

Drops valid IP address

ping 8.8.8.8

Google's DNS server (if this fails, there's no connection to the Internet)

Ping Default Gateway

How to check connectivity on local network (connection to router)

ipconfig /all

Pulls ALL info about connection

ipconfig /renew

Pulls new IP address; you can see: IPv4, subnet mask, gateway, and DNS server

ping

Sends a message from one computer to another to check whether it is reachable and active

ipconfig /flushdns

When 2 computers used to be able to communicate but one of their IP addresses change/conflicts (i.e. two entities sharing an IP address), this reestablishes the connection between the 2 computers

ipconfig

Windows command that shows the IP configuration settings on a PC

loopback address IPv4

ping 127.0.0.1 or ping loopback -4

loopback address IPv6

ping ::1 or ping loopback -6