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Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
Chapter 23 E-Series and G-Series Ethernet Operation
E-Series Shared Packet Ring Ethernet Circuits
E-Series Shared Packet Ring Ethernet Circuits
A shared packet ring allows additional nodes (besides the source and destination nodes) access to an
Ethernet STS circuit. The E-Series card ports on the additional nodes can share the circuit’s VLAN and
bandwidth. Figure 23-21 illustrates a shared packet ring. Your network architecture might differ from
the example.
Figure 23-21 Shared Packet Ring Ethernet Circuit
E-Series Hub-and-Spoke Ethernet Circuit Provisioning
The hub-and-spoke configuration connects point-to-point circuits (the spokes) to an aggregation point
(the hub). In many cases, the hub links to a high-speed connection and the spokes are Ethernet cards.
Figure 23-22 illustrates a hub-and-spoke ring. Your network architecture might differ from the example.
ONS NodeONS Node
Access router
Backbone router
Access router
Access router
Access router
SONET/SDH Ring
Access router Access router
ONS Node
32165
SONET
Ethernet
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