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Chapter 5
SONET Topologies
Figure 5-8
14 DS-1s
8 DS-3s
Figure 5-9
shelf assembly layout for the remaining sites in the ring. In this BLSR configuration, an additional eight
DS-3s at Node IDs 1 and 3 can be activated. An additional four DS-3s can be added at Node ID 4, and
ten DS-3s can be added at Node ID 2. Each site has free slots for future traffic needs.
November 2001
A five-node BLSR
Carrier 1
2 OC-3s
56 local
Carrier 2
DS-1s
12 DS-3s
Node 0
Node 4
4 DS-1s
shows the shelf assembly layout for Node 0, which has one free slot.
4 DS-1s
14 DS-1s
Node 1
Node 2
Node 3
14 DS-1s
Cisco ONS 15454 Installation and Operations Guide
Bidirectional Line Switched Rings
2 DS-1s
14 DS-1s
= Fiber 1
= Fiber 2
Figure 5-10
shows the
5-9
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