Users Reporting Loss of Connectivity: Troubleshooting 169.254.X.X IP Addresses

Troubleshooting 169.254.X.X IP Addresses

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Question

Users on a LAN segment are reporting a loss of connectivity to network services.

The client PCs have been assigned with 169.254.X.X IP addresses.

Which of the following IP address schemas is being utilized?

A.

Private IP B.

Static IP C.

APIPA D.

Loopback.

C.

Explanations

Users on a LAN segment are reporting a loss of connectivity to network services.

The client PCs have been assigned with 169.254.X.X IP addresses.

Which of the following IP address schemas is being utilized?

A.

Private IP

B.

Static IP

C.

APIPA

D.

Loopback.

C.

The IP address schema being utilized in this scenario is APIPA (Automatic Private IP Addressing).

When a device configured to use DHCP (Dynamic Host Configuration Protocol) fails to obtain an IP address from a DHCP server, it can self-assign an IP address within the APIPA range of 169.254.0.1 to 169.254.255.254. This is a feature of Microsoft Windows operating systems, and is designed to allow devices to communicate with each other on a local network segment when a DHCP server is not available.

However, APIPA addresses are not routable, meaning they cannot be used to communicate with devices outside of the local network segment. This is likely the reason why the users are reporting a loss of connectivity to network services.

To resolve this issue, a DHCP server should be configured on the network to provide valid IP addresses to clients. If a DHCP server is not available, static IP addresses can be manually assigned to devices to allow them to communicate with each other.