1982 - Enter (Shared) Ethernet
Not point-point: scales well - interfaces cheap
Cpus share common medium regulated by standards
Access to media is regulated by collision back-off scheme - CSMA/CD
Universal (unique) addressing scheme avoids address conflicts
- Addresses look like this: xx-xx-xx-yy-yy-yy
- Xx-xx-xx = manufacturer code
- Yy-yy-yy = interface number