IEEE defines Ethernet. Every Ethernet device you connect follows specifications.
What it defines:
- Frame format with addresses and checksums
- Physical layer specs for cables and connectors
- Speeds from Mbps to Gbps
Common variants:
- u: BASE-TX Fast Ethernet
- ab: BASE-T Gigabit
- ae: Gigabit
- bz: / Gbps over Cat e
When you buy Ethernet gear, compliance guarantees compatibility.