Orion A10E - Figure 7-15 RRPS in Normal Status

Orion Networks
A10E/A28E/A28F Configuration Guide
7 Reliability
Orion Networks
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by Hello packets, which contain all nodes information the node collected from the other
interface. The normal state of RRPS is shown below.
Figure 7-15 RRPS in normal status
According to the interface state of node ring, the ring node state can be divided into three
types:

Down: At least one of the two RRPS node interfaces is Down, then the node is Down.

Block: At least one of the two RRPS node interfaces is Block, then the node is Block.

Two-Forwarding: Both RRPS node interfaces are Forwarding, then the node is Two-
Forwarding.
The election rules of master node are as follows:

In all nodes on the ring, node with Down state is prior for master node, followed by
Block and Two-Forward.

If the nodes are in the same state, the node with high-priority Bridge is master node.

If the nodes have the same state and priority, the node with large MAC address is master
node.
Interface Block rules:

All Link Down interfaces are Block.

If the node is not master node, all Link Up ring interfaces are Forwarding.

If the node is master node, then one of two interfaces is Block, the other is Forwarding.
Rules are as follows:
– Both interfaces are Up, the Block is the first interface;
– If one interface is Down, then Block this interface.
The RRPS link failure is shown below.