4th October 2019


What is a 169 IP address and what could it indicate?

Generally, a 169 IP address means that your computer wasn't able to talk to a DHCP server. Usually that means that your router is wedged and needs to be rebooted, or that your Wi-Fi isn't working at all. A good starting point is to reboot your router and your laptop.

What is a loopback address and what is it used for?

Addresses on Loopback. For IPv4, the loopback interface is assigned all the IPs in the address block. That is, through all represent your computer. For most purposes, though, it is only necessary to use one IP address, and that is .

What is the use of loopback IP address in router?

A loopback interface is not a physical interface like Fast Ethernet interface or Gigabit Ethernet interface. A loopback interface has many uses. Loopback interface's IP Address determines a router's OSPF Router ID. A loop back interface is a software interface which can be used to emulate a physical interface.
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