Four-Shelf Node Configurations - Cisco ONS 15454 Reference Manual

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SONET Topologies and Upgrades

Figure 12-15

12.6 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 12-16 on page 12-18

separate node in the ONS 15454 software interface and traffic is mapped using CTC cross-connect

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.

PPMN Virtual Ring

shows a four-shelf node setup. Each shelf assembly is recognized as a

12-16, each node uses redundant fiber-optic cards. Node 1 uses redundant OC-N

12.6 12.6 Four-Shelf Node Configurations

Cisco ONS 15454 Reference Manual, R7.0.1