Cisco Systems 15454M6DC Benutzerhandbuch
5-12
Cisco ONS 15454 Installation and Operations Guide
78-13453-01
Chapter 5 SONET Topologies
Bidirectional Line Switched Rings
Figure 5-11 Connecting fiber to a four-node, two-fiber BLSR
Figure 5-12 Connecting fiber to a four-node, four-fiber BLSR
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Node 1
West
East
West
East
West
East
West
East
Slot 5
Tx
Rx
Rx
Slot 12
Tx
Rx
Node 3
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Rx
Node 2
Slot 5
Tx
Rx
Rx
Slot 12
Tx
Rx
Node 4
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Rx
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Node 1
West
East
West
East
West
East
West
East
Slot
5
Slot
12
Node 3
Slot
5
Slot
12
Node 2
Slot
5
Slot
12
Node 4
Slot
5
Slot
12
Tx
Rx
Slot
6
Slot
13
Tx
Rx
Slot
6
Slot
13
Tx
Rx
Slot
6
Slot
13
Tx
Rx
Slot
6
Slot
13
Working fibers
Protect fibers
Protect fibers