169.254.x.x is the IP address that the Windows operating system automatically assigns to the client when the DHCP information lease fails. There is no gateway when you see the address.
Solution starts the DHCP service
1.
First verify that the router DHCP service has clocked in the router address is generally 192.168.1.1
Of course, this is usually the case that the computer is not able to enter the router, you can use a notebook or mobile phone login router
Without a cell phone and without a laptop, you just ignore this step.
2. Right click on my computer to manage the Display Computer Management window
Click Services and Applications
Click Services
Locate DHCP Client Double-click Enable
Startup type selection Automatic
Then open the network and Sharing Center and then view the IP address
General OK
The fixed IP is also invalid when the computer does not turn on the DHCP service!
Most of the time it's the result of some digital defender optimization.
PS: from degrees Niang Encyclopedia
DHCP (Dynamic Host Configuration Protocol) is a LAN protocol that uses UDP to work with two main purposes: assigning an IP address to an internal network or network service provider automatically, For users or internal network administrators as a means of central management of all computers, in RFC 2131 is described in detail. DHCP has 3 ports, where UDP67 and UDP68 are normal DHCP service ports, respectively, as service ports for DHCP server and DHCP client, and port No. 546 for DHCPV6 client instead of DHCPV4, which is for DHCP Failover service, which is a service that needs to be opened specifically, the DHCP failover is used to do "hot standby of two machines"
169.254 Address No Gateway information-----Solution start the DHCP service