Delta DVS-328 series, User Manual

Page: 80 / 246

C h a p t e r 3 F e a t u r e d F u n c t i o n s
3 - 5 9
ONE COUPLING Configuration
Item Description
Instance ID The ONE COUPLING instance index. The range is 1 to 1000.
Mode
Defines the node role. The possible field values are:

Head : The Head node sends periodic status packets to the ring on both the
ring ports. If the main path is disrupted, the head node will send a status
message indicating the linking down. After the main path is restored, the main
path ports will be initially set to the blocked state.

Tail : The tail node receives status messages from the head. The backup path
is blocked by default. On detecting the main path failure, it will allow the
forwarding in the backup path. On detecting the main path recovery, it will
change the state of the backup path to the blocking.
Port
On the head node, it is the head port.
On the tail node, it is tail port.
Coupling Status
Defines the current ring status of the node.
Head state:

Monitor : The head port is linked up.

Fault : The head port is linked down. It will notify the tail node to activate the
backup path.

Link-Up : The head port is linked up. If the head port is linked down at this
state, it will change to Fault again.

Hold : After the Link-Up timer timeout occurs, the node will change to the
HOLD state.
Tail State:

Discover : The coupling is not completed yet. It waits for the head port link
status message from the head node.

Monitor : The coupling is completed and healthy.

Fault : The coupling is disconnected.
Admin Status The ONE COUPLING instance entry status, including active, inactive, and etc.
3.3.2.4 Redundancy Cruiser
Redundancy Cruiser is used to monitoring the ONE RING / ONE CHAIN / ONE COUPLING link status. The
administrator can get the redundancy network information immediately if there is any link down or unknow
situation happened.
Note:
This feature is only activated on the master node of ONE RING, the head node / tail node of ONE
CHAIN, and the tail node of ONE COUPLING.