Users Guide

the control frame instructing it to clear its routing table, it does so and unblocks the previously blocked ring
ports on the newly restored port. Then the Transit node returns to the Normal state.
Multiple FRRP Rings
Up to 255 rings are allowed per system and multiple rings can be run on one system.
More than the recommended number of rings may cause interface instability. You can configure multiple
rings with a single switch connection; a single ring can have multiple FRRP groups; multiple rings can be
connected with a common link.
The S5000 system supports up to 32 rings on a system (including stacked units).
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
Force10 Resilient Ring Protocol (FRRP) 425