Advantages and disadvantages of mac addressing?

Answer 1

The advantage of MAC addressing is that there is no attachment cost to devices that connect to the network. Its disadvantage, on the other hand, include easy spoofing due to the broadcast nature of the Ethernet.

Answer 2

Disadvantage #1: there are a total of 2^48 possible unique addresses possible using the current 48 bit hardware address

Advantage #2: hardware addresses are only meaningful on a local layer 2 LAN, so this eliminates

Disadvantage #2: because of the fact that the OUI is the first three bytes, a manufacturer can only have 2^24 unique addresses per OUI

Advantage #1: many large manufacturers have been issued multiple OUIs. This eliminates

Disadvantage #3: on a local layer 2 LAN/WAN, each hardware address must be unique.