Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 344

www.dell.com | support.dell.com In the example shown in Figure 16-2, 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 16-2. 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 344 | Force10 Resilient Ring Protocol (FRRP)