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Closed Ring Networking
Closed ring-networking is at the aggregation layer and is used to aggregate Layer 2 unicast and multicast services. When SEP runs at the aggregation layer, redundancy protection switching can be implemented at the aggregation layer and the topology of the SEP segment can be displayed. On a closed ring network, two edge interfaces are located on the same edge device.
Figure 17-11 shows a networking diagram of a closed ring running SEP.
Figure 17-11 Closed ring running SEP
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In Figure 17-11, LSW1 to LSW5 form a dual-homed link to access a Layer 2 network. LSW1 and LSW5 at the edge of the Layer 2 network are directly connected.
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