Need of MAC Address Table
The MAC address table is a way to map each and every port to a MAC address. The MAC address table consists of two types of entries.
- Static Entries: Static entries have high priority than dynamic entries and remain active they can be changed or removed by the switch administrator as they are manually added by the switch administrator.
- Dynamic Entries: Dynamic entries are added to the table automatically with a process called MAC learning here the switch fetches the source MAC address of each Ethernet frame received on the port. Dynamic entries are automated they are automatically deleted
What is MAC Address Table ?
MAC stands for Media Access Control it is a physical address that uniquely identifies a device and hardware manufacturer on a network. Most commonly used in (IEEE 802) networking technologies, like Ethernet, WiFi, and Bluetooth technology.
A mac address is globally unique so suppose two devices are on the internet they can not have the same MAC address. It works on the Data link layer of the OSI model. It is also known as the Ethernet address are 6 bytes or 48 bits in length typically written in hexadecimal format.
A MAC address is generally assigned to the Network Interface Card of each and every device that is connected to the internet.
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