xv
Figures
Figure2-1 Aligning SC-Type Fiber Optic Cable Connectors. . . . . . . . . . . 6
Figure2-2 Cleaning the End of a Fiber Optic Cable . . . . . . . . . . . . . . . . . . 8
Figure6-1 FDDI Architectural Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure6-2 Communication Between FDDI Layers . . . . . . . . . . . . . . . . . . . 54
Figure6-3 Basic FDDI Network Architecture . . . . . . . . . . . . . . . . . . . . . . . 55
Figure6-4 Single-Attached Station (SAS). . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure6-5 Dual-Attached Station (DAS). . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure6-6 Single-Attached Concentrator (SAC) . . . . . . . . . . . . . . . . . . . . . 58
Figure6-7 Dual-Attached Concentrator (DAC). . . . . . . . . . . . . . . . . . . . . . 59
Figure6-8 Isolating a Single Station Failure. . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure6-9 Isolating a Single Cable Failure. . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure6-10 Dual-Attached Station in Wrap Mode . . . . . . . . . . . . . . . . . . . . 62
Figure6-11 Dua-Ring Network Divided by Two Faults . . . . . . . . . . . . . . . 63
Figure6-12 Optical Bypass Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Figure6-13 Optical Bypass Switches used in a Network. . . . . . . . . . . . . . . 64
Figure7-1 Basic Dual-Ring Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70