Figure 5-5 A Four-Fiber Blsr Span Switch; Figure 5-6 A Four-Fiber Blsr Ring Switch - Cisco 15454-TCC - Network Processor Card Operation Manual

Bidirectional Line Switched Rings
Figure 5-5
Node 3
Figure 5-6
Node 3
Cisco ONS 15454 Installation and Operations Guide
5-6
A four-fiber BLSR span switch
Node 0
Span 4
Span 5
OC-48 Ring
Span 6
Span 3
Node 2
A four-fiber BLSR ring switch
Node 0
Span 4
Span 5
OC-48 Ring
Span 6
Span 3
Node 2
Span 1
Span 8
Node 1
Span 7
Span 2
= Working fibers
= Protect fibers
Span 1
Span 8
Node 1
Span 7
Span 2
= Working fibers
= Protect fibers
Chapter 5 SONET Topologies
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