Cisco ONS 15454 DWDM - Figure 10-1 Hubbed Traffic Topology; Multihubbed Traffic Topology

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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 10-1 Hubbed Traffic Topology
10.2.1.2 Multihubbed Traffic Topology
A multihubbed traffic topology (Figure 10-2) is based on the hubbed traffic topology, except that two or
more hub nodes are added. Protected traffic can only be established between the two hub nodes.
Protected traffic can be provisioned between a hub node and any OADM node only if the allocated
wavelength channel is regenerated through the other hub node. Multihop traffic can be provisioned on
this ring. From a transmission point of view, this network topology is similar to two or more
point-to-point links with OADM nodes.
Hub
Amplified OADM
Passive OADM
Line amplifier
90995
Amplified OADM Passive OADM
Amplified OADM
OSC
OSC