First, the definition of dynamic IP and static IP

1. Dynamic IP

Dynamic  IP  refers to the  network  equipment  each time the  Internet  connection,  the  Internet Service provider (ISP) dynamically assigned, variable IP address, is a kind of IP address will change dynamically, but it does not change all the time and everywhere, the dynamic  IP usually only changes each time the Internet connection.

For  example,  your  IP  address  is  still  114.234.70.116  today,  and  it  will  become  163.128.0.10 tomorrow.

2. Static IP

Static IP refers to the fixed IP address assigned by the Internet Service Provider (ISP) when the network device is connected to the Internet. As the name suggests, it is a static and fixed IP that will not change with the disconnection andreconnection of the network device. Static IP is usually used for the need to provide services to the server and other equipment, is assigned to the user's long-term use of the address, will not change, you can directly connect to the Internet, do not need to obtain IP address.

For example, your IP address has always been 114.234.70.116, which will never change.

Second, the difference between dynamic IP and static IP

The main difference between dynamic IP and static IP is their stability and configuration.

1. Stability

• Dynamic IP addresses may change overtime because they are dynamically assigned by the DHCP server, so the network identity of the device  may constantly change while using a dynamic  IP address.

• The static IP address is fixed, when the device uses the static IP address, its network identity will not change, and the stability is higher than the dynamic IP.

2. Configuration method

• Dynamic IP devices can be acquired automatically and users do not need to make complicated Settings.

• Static  IP  requires  manual  setup  and  requires the user or  network administrator to explicitly specify  information  such  as   IP  addresses,  subnet   masks,  default  gateways,  and   DNS  server addresses.

Third. Application scenarios of dynamic IP and static IP

• Dynamic IP : Because dynamic IP addresses are more flexible and easier to use, they are more suitable for environments with a large number of devices and frequent network topology changes. For example, the home network of an average user, a small office network, etc., because these users  generally   only  need  to  surf  the   Internet  for   basic  operations  such  as  browsing  and downloading.

• Static IP : Because static ips are more stable, they are more suitable for scenarios that require remote access, server hosting, etc., that require stable network identity. For example,a business's servers, webcams, network printers, etc., will often use a static IP address.

Fourth, the choice of dynamic IP and static IP

Understand the dynamic IP and static IP is what, can help us reasonably choose the type of IP address, if the access network equipment, network environment is complex and changeable, at this time to choose the dynamic IP is more economical and efficient;  But if you need a stable network environment or a need for remote access control, static IP is your best choice.