The difference between an IP address and a physical address and the connection

The IP address is the address you need to use to surf the Internet, and the physical address is the address of your device, which is unique in the world.

IP addresses and physical addresses are structured differently.

1. Whether it can be changed.

The IP address is a logical address and can be changed, while the physical address is a fixed address, which is fixed at the factory and cannot be changed.

2. Whether it is unique.

IP address, which is an Internet Protocol address, is not unique; The physical address is the fixed address on the network card of each computer, which is unique.

3. The main role is different.

IP addresses focus on the network layer, transporting packets from one network** to another; Physical addresses, on the other hand, focus on the data link layer, transporting a data frame from one node to another node on the same link.

4. The length of the two is different.

The IP address is 32 bits, divided into 4 segments, each with 8 digits, represented by decimal numbers; Whereas, the physical address is 48 bits and consists of hexadecimal numbers, which are divided into the first 24 bits and the last 24 digits.

5. The addressing protocol layer is different.

The IP address is applied to the third layer of OSI, that is, the network layer; The physical address is used at the second layer of OSI, which is the data link layer.

6. The distribution basis is different.

The assignment of IP addresses is based on the network topology, whereas the assignment of physical addresses is based on the manufacturer.

Encyclopedia-IP address.

Encyclopedia-mac address.

Distinguish. 1. Whether it has uniqueness is different.

MAC addresses (also known as physical addresses) are unique, that is, the MAC address of each hardware is fixed when it leaves the factory.

IP addresses are not unique, so it is very clear that the search application software is developed around MAC addresses and is not a fixed value.

2. The difference in the number of digits in length.

20:10:0a:

6c:8d is a MAC address.

The IP address is generally 32 bits long and is represented as four 8-octets separated by dots. For example, it is an IP address.

3. The implementation principle is different.

The MAC address is implemented by the hardware and works at the data link layer. The MAC address is usually the transmission data that is quietly stored by the EPROM of the network card manufacturer, and the MAC address is used to identify the computer that sends the data and the address of the host that receives the data.

IP addresses work at the network layer and above, assigning a logical address (i.e., IP address) to every network and each host on the Internet to hide the difference in physical addresses.

Contact. 1. The IP address and MAC address are linked together through the ARP protocol, and the data packets are transmitted thereby. The packets are then transmitted from the initial node, node by node, and finally delivered to the destination node.

2. The IP address can be bound to the MAC address to determine the only computer on the network. At present, computers are connected through the local area network and then through the switch and the network. This requires that the IP address and MAC address can be used in conjunction with the MAC address.

Each user is assigned a fixed IP address and then uses a MAC address to identify the user, which can better protect the corresponding information on the computer.

A physical address, also known as a MAC address (MAC address), is an address used to identify a network device, which is generally composed of 6 bytes and is usually represented in hexadecimal system. Each network device has a unique MAC address, which is the hardware address of the device, which is pre-assigned by the manufacturer of the device and cannot be changed. The MAC address is used to identify the device in the LAN and supports the transmission of data packets through the network.

An IP address (Internet Protocol address) is a 32-bit address that uniquely identifies a device on the Internet. IP addresses are divided into IPv4 and IPv6, where IPv4 addresses are composed of 32-bit binary numbers, usually represented by dot decimal systems, such as addresses are used to locate devices in the Internet and realize data routing and transmission in the network. Unlike MAC addresses, IP addresses are not assigned by the device manufacturer, but by the network administrator and can be changed.

In summary, a physical address (MAC address) is the address used to identify the device in the local area network, while an IP address is the address used to identify the device in the Internet. They function at different levels, MAC addresses are used at the data link layer and IP addresses are used at the network layer and are an important part of the network communication.

-Funnet Super Fun Learning Network.

There are three differences between IP addresses and physical addresses, and DNS domain names (also known as domain name systems)., which is described as follows:

1. The uses of the three are different:

The essence of the two and three is different:2. The essence of the physical address: In the memory, the information is stored in bytes, and in order to store or obtain the information correctly, each byte unit is given a unique memory address, which is called a physical address, also known as the actual address or absolute address.

3. The essence of DNS domain name: a system that solves the problem of online machine naming. Just as visiting a friend is a prophet of how to get to someone's house, when a host wants to access another host on the Internet, you must first know its address.

3. The nature of the three is different:3. The nature of DNS domain name: it is a service of the Internet.

1. The uses of the three are different:

The essence of the two and three is different:

3. The nature of the three is different:

3. The nature of DNS domain name: it is a service of the Internet.