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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 10      Network Reference
10.2.1    Ring Networks
Figure 10-2 Multihubbed Traffic Topology
10.2.1.3 Any-to-Any Traffic Topology
The any-to-any traffic topology (Figure 10-3) contains only reconfigurable OADM (ROADM) nodes 
(with or without optical service channel [OSC] regeneration) or optical amplifier nodes. This topology 
potentially allows you to route every wavelength from any source to any destination node inside the 
network.
See the “9.1.4  ROADM Node” section on page 9-12 for more information.
Hub
Hub
Passive OADM
Line amplifier
90998
Amplified OADM Passive OADM
Amplified OADM
OSC
OSC