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Dell Configuration Guide for the S4048–ON System 9.14.2.5

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Member VLAN Spanning Two Rings Connected by One Switch

A member VLAN can span two rings interconnected by a common switch, in a figure-eight style topology.

A switch can act as a Master node for one FRRP group and a Transit for another FRRP group, or it can be a Transit node for both rings.

In the following example, FRRP 101 is a ring with its own Control VLAN, and FRRP 202 has its own Control VLAN running on another ring. A Member VLAN that spans both rings is added as a Member VLAN to both FRRP groups. Switch R3 has two instances of FRRP running on it: one for each ring. The example topology that follows shows R3 assuming the role of a Transit node for both FRRP 101 and FRRP 202.

Figure 1. Example of Multiple Rings Connected by Single Switch
Example of Multiple Rings Connected by Single Switch

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