工业以太网交换机支持的环网类型

A. 单环

1.Single Ring

Domain 1

Domain 2

Figure 4: Multiple domains on the same ring

B．双环

1. Tangent Ring

Domain 1

Domain 2

Figure 5: Tangent Ring

2. Dual-homing Ring

Main Domain

Secondary Domain

Figure 6 Dual-homing Ring

3.

Ring-coupling Ring

Primary path Figure 7 Ring-coupling