Overview
This lecture covers Ethernet networking standards, including their naming conventions, types of media used, and the organizations responsible for standardization.
Ethernet Basics
- Ethernet is the most popular networking standard used globally for wired connections.
- Most devices support Ethernet, allowing for easy connectivity on nearly any network.
- Ethernet networks can use different types of cables, connectors, and speeds.
Ethernet Standards and Media Types
- Ethernet standards are created and maintained by the IEEE 802.3 committee.
- There are Ethernet standards for both twisted pair copper cables and fiber optic cables.
- Example: 1000BASE-T is gigabit Ethernet using twisted pair copper, running at 1 Gbit/s.
- Example: 10GBASE-T supports 10 Gbit/s over twisted pair copper cables.
- Example: 1000BASE-SX is gigabit Ethernet over fiber optics at 1 Gbit/s.
- There are many other Ethernet standards, each supporting different speeds and media.
Decoding Ethernet Standard Names
- The number at the beginning usually indicates speed (e.g., 1000 = 1000 Mb/s or 1 Gb/s).
- The term "BASE" refers to baseband transmission (single frequency).
- The last letter(s) indicate the media type: "T" for twisted pair copper, "F" for fiber optics.
- Additional letters (e.g., "SX") often describe wavelength or transmission details.
- The name gives hints about the standard, but full details require reviewing the official documentation.
Key Terms & Definitions
- Ethernet — A standard technology for connecting devices in a wired local area network (LAN).
- IEEE 802.3 — The committee that develops Ethernet standards.
- Baseband — A transmission method using a single frequency to send data.
- Broadband — Uses multiple frequencies for simultaneous data transmission.
- Twisted Pair — A type of copper cable used in networking.
- Fiber Optic — Cable that transmits data as light signals.
Action Items / Next Steps
- Review details of specific Ethernet standards if needed for your coursework or lab.