Tab le of Conten ts
Issue 3 June 2001 2-i
2
Applications
Overview 2-1
Introduction 2-2
Network Configurations 2-3
■ Path Switched Rings 2-3
OC-3 Path Switched Ring 2-6
OC-12 Path Switched Rings 2-9
OC-3 Ring with OC-12 Ring Transport 2-13
OC-12 STS-1/VT1.5 Path Switched Ring (0x1) 2-17
OC-1 Path Switched Ring 2-18
Folded Ring 2-19
OC-1 Ring Transport on OC-3 Ring 2-21
Stand-Alone OC-1 Ring/Hub Networks 2-23
■ Dual Homing 2-25
OC-1 Ring Transport on OC-3 Ring 2-25
■ Dual Ring Interworking (DRI) 2-27
■ Dual Homing with DRI 2-33
■ OC-3/OC-12 Linear Optical Extensions from
OC-3, OC-12, and FT-2000 Rings 2-34
■ Hairpin Cross-Connections on Rings 2-35
Enhanced Routing 2-36
OC-1 Ring Pass-Through 2-37
OC-1 Ring Hairpin Routing, Single-Homed 2-38
OC-1 Ring Hairpin Routing, Dual-Homed 2-39
Hairpin Local Drop Routing 2-40
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