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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter1 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.
Figure1-4 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 be cause it allows
you to order shelf assemblies pre-installed in a seven-foot rack. T he Ba y A ssem bly is a vai lable in a
three- or four-shelf configuration. The three-shelf configuration includes three ONS 15454 she lf
assemblies, a pre-wired fuse and alarm panel, and two cable-manageme nt 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 fo ur 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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