Four-Shelf Node Configurations - Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Reference Manual

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Chapter 12
SONET Topologies and Upgrades
Figure 12-32
ONS 15454
Node 5
ONS 15454
Node 6

12.9 Four-Shelf Node Configurations

You can link multiple ONS 15454s using their OC-N cards (that is, create a fiber-optic bus) to
accommodate more access traffic than a single ONS 15454 can support. Refer to the Cisco ONS 15454
Procedure Guide. For example, to drop more than 112 DS-1s or 96 DS-3s (the maximum that can be
aggregated in a single node), you can link the nodes 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 grouped in one facility to aggregate more local traffic.
Figure 12-33 on page 12-34
separate node in the ONS 15454 software interface and traffic is mapped using CTC cross-connect
options. In
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-shelf node example presented here is one of many ways to set up a multiple-node configuration.
78-18106-01
PPMN Virtual Ring
ONS 15454
Node 1
OC-12
ONS 15454
Node 2
shows a four-shelf node setup. Each shelf assembly is recognized as a
Figure
12-33, each node uses redundant fiber-optic cards. Node 1 uses redundant OC-N
ONS 15454
Node 4
OC-48
ONS 15454
Node 3
Cisco ONS 15454 Reference Manual, R8.5
12.9 Four-Shelf Node Configurations
ONS 15454
Node 8
OC-12
ONS 15454
Node 7
12-33

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