Notes
Outline
Network Communications
Chapter 13
Gigabit Ethernet Networking Technology
Gigabit Ethernet Applications
High speed LAN Backbone
Using Gigabit switches
Tie 100BaseT LANs together
High Speed Point-to-point
Fiber connection
Bridge sites together
802.3z: Gigabit Ethernet Protocol Architecture
Physical Layer
1000BaseLX: 1300 nm laser
(long infrared) 5 Km SMF
1000BaseSX: 850 nm laser
(barely infrared) 500 m MMF
1000BaseCX: 150W
balanced twinax 25 m
1000BaseT: 4 pair Cat5 UTP
100m
Minimum Gigabit Ethernet Frame
Full vs. Half Duplex Gigabit Ethernet
Full-duplex connections
Point-to-point
No collisions
Half-duplex
Collision segments
Requires longer frames
Gigabit Ethernet Components
Serializer
 8B/10B Encoding
Upgrading Fast Ethernet to Gigabit Ethernet
Upgrading the Server Links to Gigabit Ethernet
Upgrading the Backbone to Gigabit Ethernet
Upgrading a Switch-to-Switch Link to Gigabit Ethernet