Cisco Systems 15454M6DC Benutzerhandbuch
5-9
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 5 SONET Topologies
Bidirectional Line Switched Rings
Figure 5-8
A five-node BLSR
shows the shelf assembly layout for Node 0, which has one free slot.
shows the
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.
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.
Node 0
56 local
DS-1s
4 DS-1s
14 DS-1s
14 DS-1s
14 DS-1s
14 DS-1s
8 DS-3s
4 DS-1s
2 DS-1s
Carrier 1
2 OC-3s
Node 1
Node 2
Node 3
Node 4
= Fiber 1
= Fiber 2
32138
Carrier 2
12 DS-3s