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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 1 Hardware Installation
Rack Installation
but not merge multiple nodes into a single ONS 15454. You can link nodes with OC-12 or OC-48 fiber
spans as you would link any other two network nodes. The nodes can be co-located in a facility to
aggregate more local traffic.
Figure 1-4 shows a four-shelf node setup. Each shelf assembly is reorganized as a separate node in the
ONS 15454’s software interface (Cisco Transport Controller [CTC]), and traffic is mapped using CTC
cross-connect options. In the figure, each node uses redundant fiber-optic cards. Node 1 uses redundant
OC-N transport and OC-N bus (connecting) cards for a total of four cards, with eight free slots
remaining. Nodes 2 and 3 each use two redundant OC-N bus cards for a total of four cards, with eight
free slots remaining. Node 4 uses redundant OC-12 bus cards for a total of two cards, with ten free slots
remaining. The four node example presented here is one of many ways to set up a multiple-node
configuration. See “Chapter 5, “SONET Topologies”” for more information about multiple-node
configurations.
Figure 1-4 A four-shelf node configuration
1.3.3.2 ONS 15454 Bay Assembly
The Cisco ONS 15454 Bay Assembly simplifies ordering and installing the ONS 15454 because it allows
you to order shelf assemblies pre-installed in a seven-foot rack. The Bay Assembly is available in a
three- or four-shelf configuration. The three-shelf configuration includes three ONS 15454 shelf
assemblies, a pre-wired fuse and alarm panel, and two cable-management trays. Optional fiber channels
can be ordered. The four-shelf configuration includes four ONS 15454 shelf assemblies and a pre-wired
fuse and alarm panel. Optional fiber channels can be ordered. A four shelf ONS 15454 Bay Assembly is
shown in Figure 1-5.
Redundant
OC-N Bus
OC-N Feed
Redundant
OC-N Bus
Redundant
OC-N Bus
Up to 72 DS-3s, 84 DS-1s
Up to 72 DS-3s, 84 DS-1s
ONS 15454
ONS 15454
ONS 15454
ONS 15454
Redundant
Up to 72 DS-3s, 84 DS-1s
Up to 96 DS-3s, 112 DS-1s
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