Terme informatique

APIPA

An address 169.254.x.x that Windows can assign when it does not receive a response DHCP.

Networking

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Simple definition

An address 169.254.x.x that Windows can assign when it does not receive a response DHCP.

Technical definition

The Prefix 169.254.0.0/16 is used by the private IP Addressing to provide limited local connectivity in the absence of IPv4 configurations.

What is it used for ?

Allow for minimal local communication and especially early reporting of a problem DHCP.

Practical example

A PC displaying 169.254.23.18 while the LAN uses 192.168.1.0/24 probably did not receive his lease DHCP.

Common issues

Server DHCP not available
Bad VLAN
Cable or Wi-Fi failure

DHCP · IP address · VLAN

Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.

See also: address 169.254.x.x.

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