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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 15 Management Network Connectivity
15.4.1 Network Using OSC
The following sections describe the different communication methods and the factors to be considered
while provisioning the connectivity.
15.4.1 Network Using OSC
Figure 15-22 shows a point-to-point network that uses OSC as the communication channel.
Figure 15-22 Network Using OSC
In a network using OSC channel, it is possible to supervise all the nodes from the network operations
center (NOC) and all nodes can communicate with each other using the OSC channel. Network topology
discovery is automatic when you use an OSC channel.
15.4.2 Network Using External DCN
Figure 15-23 shows a point-to-point network that uses external DCN as the communication channel.
Figure 15-23 Network Using External DCN
In a network using external DCN, it is possible to supervise all the nodes from the network operations
center (NOC) and all nodes can communicate with each other using external DCN. The NOC is
connected to each node through the external DCN. Since nodes do not have OSC connectivity, you must
DCN
CTC/Management
OSC
Node A Node B
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CTC/Management
OTS to OTS PPC
Virtual connection
Node A
Node B
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DCN
Node connection relies on DCN
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