CSM 152 L7 MAC ADDRESS .pdf

CSM 152: Information Technology II MAC Address  MAC Address Outcomes Understand the basics of MAC addressing Understand the difference between IP address and MAC address See the MAC address in real devices  MAC Address MAC = Media...

CSM 152: Information Technology II MAC Address  MAC Address Outcomes Understand the basics of MAC addressing Understand the difference between IP address and MAC address See the MAC address in real devices  MAC Address MAC = Media Access Control A MAC address (also known as a Wi-Fi address, physical address, or Ethernet ID) always has 6 pairs of characters with a dash or colon between them (for example: 00-1a-22-3c-dd-5e). Every node in the LAN is identified with the help of MAC address. Analogy: IP Address = Location of a person. MAC Address = Name of the person  MAC Address Every node in the LAN is identified with the help of MAC address.  MAC Address Every node in the LAN is identified with the help of MAC address Physical address or Hardware Adress Unique Cannot be changed Assigned by the manufacturer Represented in hexadecimal Example: 70-20-84-00-ED-FC (48 bits) Separator: hyphen (-), period (.), colon (:)  MAC Address IP Address MAC Adrress Needed for communication Needed for communication 32 bits 48 bits Represented in Decimal Represented in hexadecimal Router needs IP Address to forward data Switch needs MAC address to forward data Example: 10.10.23.56 Example: 70-20-84-00-ED-FC HOW TO SEE MAC ADDRESS Go to: ▪ CMD ▪ Ipconfig to see IP Address ▪ Ipconfig/all to see MAC Address  MAC Address To get the MAC address for a(n): Apple iOS device: Go to Settings > General > About > Wi-Fi Address Android phone or tablet: Go to Settings > About (device) > Status > Wi-Fi MAC address Windows Phone or tablet: Go to Settings > About > More Info > MAC address You can use MAC addresses to: Allow only specific mobile devices or computers to use your Wi-Fi network Block or limit specific devices from using your Wi-Fi network.