Typical Topology for Hierarchical Mode

• Typical topology for the single ring

EIPS Domain1 includes Ring1, Master, Transit1, Transit2, and Transit3. The primary port (Primary) and secondary port (Slave) are configured on the master node. EIPS Domain1 has only Ring1. This single ring is defined as the major-level ring with level numbered 0 and segment numbered 0. When the major-level ring is not faulty, data VLANs on the port Slave are blocked. , as shown in Figure 3-3.

Figure 3-3 Topology for the single ring in the hierarchical mode

• Typical topology for the intersecting ring

Domain1 is divided into a hierarchical structure with a major-level ring and a low-level segment. Ring1 is defined with level numbered 0 and segment numbered 0. The ring intersected with Ring1 excludes the common parts caused by Transit2 and Transit3 intersection and forms a low-level segment with level numbered 1 and segment numbered 1. The major-level ring (Level 0 and segment 0) includes Master, Transit1, Transit2, Transit3, and Transit4. The major-level ring is a single ring.

The low-level segment (Level 1 and segment 1) includes Edge control (Transit2) and Edge assistant (Transit3), Transit5, and Transit6.

Figure 3-4 Topology for the intersecting ring in the hierarchical mode