Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 256

www.dell.com | support.dell.com Figure 12-2. Example of Multiple Rings Connected by Single Switch FRRP 101 MASTER R1 Primary Forwarding Secondary Blocking Ring 101 Direction TRANSIT R7 Primary Forwarding Primary Forwarding TRANSIT R3 TRANSIT R3 Secondary Forwarding Secondary Forwarding Primary Forwarding Primary Forwarding TRANSIT R2 Secondary Forwarding Secondary Forwarding Secondary Forwarding TRANSIT R4 Primary Forwarding TRANSIT R6 Secondary Forwarding Primary Forwarding Ring 202 Direction Primary Forwarding FRRP 202 Secondary Blocking MASTER R5 Important FRRP Points FRRP provides a convergence time that can generally range between 150ms and 1500ms for Layer 2 networks. The master node originates a high-speed frame that circulates around the ring. This frame, appropriately, sets up or breaks down the ring. • Ring Status Check Frames are transmitted by the Master Node at specified intervals • Multiple physical rings can be run on the same switch • One Master node per ring-all other nodes are Transit • Each node has 2 member interfaces-Primary, Secondary • No limit to the number of nodes on a ring • Master node ring port states-blocking, pre-forwarding, forwarding, disabled 256 | Dell Force10 Resilient Ring Protocol