Signamax Managed Hardened PoE Industrial DIN-rail Mount Switch - Manual (Page 63)

12 RecoverRing Configuration
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12 Ring Configuration
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Note:
Enable RecoverRing II™ in 3 Advanced Configuration . But STP cannot be enabled with
RecoverRing II™ at the same time.
RecoverRing II™ is a link layer protocol. It can prevent broadcast storm when the Ethernet
ring is complete, while it can recover the communication among each nodes when one link is
down on the Ethernet ring.
At present, STP and RecoverRing II™ can solve the ring problem in layer 2 Ethernet. STP is
used maturely, but the recovery time is in second; while RecoverRing II™ can cover the
communication more quickly, and the nodes in the ring don’t affect the recovery time of
RecoverRing II™, so it can used in large-diameter network.
RecoverRing II™ network:
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
Ring 1 Ring 2
A
B
C
D
E F
G H
Port 1
Port 2
Port 1
Port 2
Port 2
Port 1
Port 1
Port 2
Port 2
Port 1
Coupling network
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
065-
7909HPOE
Ring 1
A
B
C
E G
F D
Port 1
Port 2
Port 1
Port 2
Ring 2
Dual homing
The devices with the same ring ID and control VLAN are connected to form a RecoverRing
II™ domain.
A RecoverRing II™ domain has a RecoverRing II™ primary ring, control VLAN, mater node,
transit node, primary port, secondary port, public port and edge port and so on.