What Is DHCP Lease Time, And How Do I Change It

dhcp lease time

Man’s curiosity is something that no one, including himself, can tame. But none is to blame for that! A human’s curiosity is why every invention and discovery that we witness around us took place. If it weren’t for a quest to find answers to the unknown, we probably would still be cavemen! This article will guide you every thing about DHCP lease time.

It is only natural we question the things happening around us, be it regarding how an airplane works or how does the internet work! How does a router provide internet facilities to multiple devices at once? How does a website identify the device requesting it for data? Well, the answer to each of these questions lies with a set of numbers called IP. It is an identification number that helps the network identify the device you are using, just like the address of a house. It is how the postal network delivers packages, as every house has a different address.

Now, one more question might arise in your mind, how are the IPs allotted to different devices? To know, read along:

See also: Wireless PAN DHCP server – All you need to know

What Is DHCP?

DHCP or Dynamic Host Configuration Protocol allocates an IP to the device that connects to a router. A DHCP server stores the IPs, and when a device requests to connect to the router, it dynamically assigns an IP to it. This is how the device can communicate with other IP devices on the network. So does this server keep allocating a new IP to every device, or is there a limit to that? That is what DHCP lease time is for.

What Is DHCP Lease Time?

The DHCP lease time is very crucial for public/office networks. For example, let’s assume you rent a house. You move in and stay for some time. But then, the lease is going to expire. So, it is inevitable that you need to move out. That’s because you were just a renter. That is the same case with DHCP lease time, with a device being a renter and the DHCP server being the owner. That is, a DHCP server temporarily assigns an IP to a device. And after the lease time is over, the DHCP server allows it to a new device.

The lease can either be permanent or temporary. If the lease time is infinite, then the device can use it indefinitely. This is useful for house networks where the residents use WiFi all the time. But whereas in offices, restaurants or hotels, the people going there will not be staying there all the time. Every day a new set of people might enter and connect to the WiFi. This is where the DHCP lease comes in. The DHCP server keeps reallotting IPs to every new device that requests it. If every time a permanent IP were allotted to a device, there would not be enough IPs to assign to other devices.

A DHCP server may be incorporated into the router. But in some cases, there are dedicated DHCP servers whose job is assigning IPs. Generally, the standard lease time of many networks is a day, that is, 24 hours. Which means the IP expires after a day. But sometimes, this period may not be suitable for the user. Hence, the owner of the network can change the lease time according to their needs. There are the following phases in a lease time:

  • On the first day, a fresh lease is requested
  • Now, the user can utilize the network for their needs
  • After half the time of the lease period, the device will ask the server for renewal so that it can keep using the IP
  • If that fails, the device tries the same with another server.

You can also view this DHCP lease time on your Windows 10 or macOS:

See also: How To Find Default Router Gateway in Mac, Windows, Android & Chrome

How To Look For DHCP Lease Time On Windows 10

Follow the steps given below to see the lease time for your Windows 10 PC/laptop:

  • First of all, open Windows PowerShell. All you need to do is right-click on your start menu, and you will get a list of options.
open windows powershell
Open Windows Powershell
  • Then, select Windows PowerShell (Admin), after which choose ‘Yes’ on the prompt that appears on the screen.
select windows powershell (admin)
Select Windows PowerShell (Admin)
  • Now, type ipconfig /all and select enter. Now you will have all the details regarding your present network, including the lease issue and expiry date. 
type ipconfig
Type ipconfig

 

How To Look For DHCP Lease Time On macOS

Follow the steps given below to view the lease time on your macOS:

  • Launch the Terminal app.
launch terminal
Launch Terminal
  • Then type in networksetup -listallhardwareports. This is to fetch you your device name on the network.
type in networksetup -listallhardwareports
Type in networksetup -listallhardwareports
  • Once you get the list of all the devices on the network, type in ipconfig getpacket devicename; after doing this, you will be able to view the necessary details regarding your connection.
  • You will also see the lease time in front of lease_time (uint43).
lease time is in front of lease_time (uint43)
Lease time is in front of lease_time (uint43)

See also: Jio Router Login – A Complete Guide

How To Change The DHCP Lease Time

As discussed earlier, the standard lease time is 24 hours in most of the networks. Or else you want to change it to a lesser time period or a longer one depending on the kind of usage. This can only be done by accessing your router’s user interface. 

  • First of all, connect your device to the router and open a web browser of your choice.
open a browser
Open a Browser
  • Now, produce your router’s IP into the URL bar and select enter.
enter ip address
Enter IP Address
  • Next, produce the correct credentials on the login page.
enter login details
Enter login details
  • Now look for LAN/ DHCP settings on the screen and select them. On the off chance you couldn’t find it, look for it in the router handbook.
look for dhcp setting
Look for DHCP Setting
  • Alter that set the lease time in minutes to suit your requirements.
dhcp lease time
DHCP Lease Time

 

Conclusion

This article was tailored to provide you with precise details regarding DHCP Lease Time. This information is ample to manipulate the lease time corresponding to your requirements. I hope this cleared your doubts and questions regarding lease time!

See also: DHCP lookup failed Error – How to solve it?

 

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About the Author: Nicholas Miller

You can always find me with a cup of coffee Googling anything and everything related to the networking. Refer to our detailed How-To Guides on wifi routers and never face any issue with router again!

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