Addressing - JuliaLightCNCS/Net-150 GitHub Wiki

MAC Address - doesn't change - OSI level two - switches - 12 hexadecimals digits - 6 bytes/48 bits

OUI is who made the device original unique identifier is the first 6 hexadecimals of MAC address and serial number is the last 6 hexadecimals

The router that interacts with LANs it's called the default gateway.

IP address - logical identifiers - OSI layer three - routers - network ID first part of IP - host ID second part of IP - 32 bits - octets for binary - 255 is the highest value an octet can have