Signamax Managed Hardened PoE Industrial DIN-rail Mount Switch - Manual (Page 64)

12 RecoverRing Configuration
59
As shown in the above figure, there are two rings: ring 1 and ring 2. They can comprise
network with coupling and dual homing.
In the RecoverRing II™ protocol, at most a two-level ring is permitted, and each ring has an
ID. A switch can be a node in a ring.
12.1 RecoverRing II™
This page sets RecoverRing II™ configuration: Ring ID, Ring Status, Control VLAN, Protect
VLAN, Fast detection status, Node mode, Primary port and Secondary port.
Ring ID: The ring ID identifies which ring this switch belongs to. In RecoverRing II™ protocol,
there are two levels of rings: Ring 1 and Ring 2.
Ring Status: To enable/disable the ring for the specified switch. Note that a switch can only
be enabled in one ring.

Note: A switch can be enabled in only one ring.
Control VLAN: This is the VLAN used for transferring RecoverRing II™ protocol packets
within the RecoverRing II™.
Protect VLAN: It is used for transferring data packets. When a VLAN is created in a ring, this
VLAN must be configured as a Protect VLAN or Control VLAN.
Fast detection status: When enabled, the RecoverRing II™ will use the FastHelloTime and
FastFailTime: instead of HelloTime and FailTime to send packets periodically to detect ring
connect status.
Node mode: Each switch on a RecoverRing II™ is called a node. There are two types of
nodes: Master and Transit. The master node sends HELLO (healthy detect) packet
periodically from its primary port. This packet is transmitted on the ring by the transit nodes in
turn. If the secondary port of the master receives the HELLO packet sent by itself, this
indicates the ring is completed. Otherwise, the HELLO packet cannot reach itself, and the
master node will consider a link failure has occurred in the ring.
The transit nodes are responsible for monitoring the states of the RecoverRing II™ links they
are directly connected to, and notify the master node of the link changes.
Caution: A ring should have, and can only have one Master node.
Primary port : The master node sends RecoverRing II™ packets via its primary port.
Secondary port: The master node uses it to receive RecoverRing II™ packets. Block it to
prevent flooding, while unblock it when a link failure has occurred.