11-4
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter11 SDH Topologies and Upgrades
11.2.1 Two-Fiber MS-SPRings
Figure 11-2 shows a sample traffic pattern on a four-node, two-fiber MS-SPRing.

Figure11-2 Four-Node, Two-Fiber MS-SPRing Traffic Pattern

Node 0
Node 1
Traffic flow
Node 2
Node 3 STM-16 Ring
Fiber 1
Fiber 2
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