Reference Guide

332 | Force10 Resilient Ring Protocol
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Figure 18-2. Example of Multiple Rings Connected by Single Switch
Important FRRP Points
FRRP provides a convergence time that can generally range between 150ms and 1500ms. The Master node
originates a high-speed frame that circulates around the ring. This frame, appropriately, sets up or breaks
down the ring.
• A single FRRP flap will occur wen a line card is reset or a stack unit fails over to the standby.
• 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 is supported per ring. All other nodes are Transit nodes.
• Each node has 2 member interfaces: Primary and Secondary.
• There is no limit to the number of nodes on a ring.
Primary
Forwarding
Primary
Forwarding
Secondary
Forwarding
Primary
Forwarding
Secondary
Blocking
Secondary
Forwarding
TRANSIT
R2
TRANSIT
R3
FRRP 101
MASTER
R1
TRANSIT
R3
Primary
Forwarding
Primary
Forwarding
Primary
Forwarding
Primary
Forwarding
Primary
Forwarding
Secondary
Forwarding
Secondary
Forwarding
Secondary
Forwarding
Secondary
Forwarding
Secondary
Blocking
FRRP 202
MASTER
R5
Ring 202
Direction
TRANSIT
R4
TRANSIT
R6
TRANSIT
R7
Ring 101
Direction