Network Communications Chapter 13 Gigabit Ethernet Networking Technology

Network Communications Chapter 13 Gigabit Ethernet Networking Technology

Gigabit Ethernet Applications • High speed LAN Backbone – Using Gigabit switches – Tie 100 Base. T LANs together • High Speed Point-to-point – Fiber connection – Bridge sites together

802. 3 z: Gigabit Ethernet Protocol Architecture • Physical Layer – 1000 Base. LX: 1300 nm laser (long infrared) 5 Km SMF – 1000 Base. SX: 850 nm laser (barely infrared) 500 m MMF – 1000 Base. CX: 150 balanced twinax 25 m – 1000 Base. T: 4 pair Cat 5 UTP 100 m Upper Layers LLC CSMA/CD or Full Duplex 8 B/10 B Decoder & Encoder Serializer & Deserializer Physical Layer Figure 13. 1 Data Link Layer

Minimum Gigabit Ethernet Frame 7 1 6 PA SFD DA 6 2 SA Length 4 448 Data FCS Extension 64 Bytes Minimum 512 Bytes Minimum Figure 13. 2 Bytes

Full vs. Half Duplex Gigabit Ethernet • Full-duplex connections – Point-to-point – No collisions • Half-duplex – Collision segments – Requires longer frames Figure 13. 3

Gigabit Ethernet Components • Serializer – 8 B/10 B Encoding Figure 13. 4

Upgrading Fast Ethernet to Gigabit Ethernet Figure 13. 5 a and b

Upgrading the Server Links to Gigabit Ethernet Figure 13. 6

Upgrading the Backbone to Gigabit Ethernet Figure 13. 7

Upgrading a Switch-to-Switch Link to Gigabit Ethernet Figure 13. 8