One Coupling Configuration - Delta DVS-328 series User Manual

D V S M a n a g e d I n d u s t r i a l R a c k Mo u n t E t h e r n e t S wi t c h U s e r Ma n u a l
ONE CHAIN Configuration
Item
Instance ID
Mode
Port1
Port2
Chain Status
Admin Status

3.3.2.3 ONE COUPLING Configuration

ONE COUPLING is used to connect two redundant ring networks. There is a main path and a backup path, and
two types of nodes which namely head nodes and tail nodes. The head node hosts the main path and the tail
node hosts the backup path. The backup path will be blocked by default. When there is a failure in the main
path, the backup path will get unblocked.
Only ONE RING will be configured with the head coupling node and the tail coupling node
Note:
The ports and LAGs which are the members of ONE COUPLING should disable the STP mode and
the Loopback-Detection mode.
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The ONE CHAIN instance index. The range is 1 to 1000.
Defines the node role. The possible field values are:
 Head: A Head node has one head port and one member port.
 Tail: A Tail node has one tail port and one member port. The tail has two
statuses: block and forwarding.
 Member: A Member node has two member ports.
On the head node, it is the head port.
On the member node, it is just one of the member ports.
On the tail node, it is the tail port.
On the head node, it is the member port.
On the member node, it is just one of the member ports.
On the tail node, it is the member port.
Defines the current ring status of the node.
On the Head node:
 Discover: The chain is not completed yet.
 Monitor: The chain is completed and healthy. The Head port is linked up, and
no node is disconnected.
 Fault: The chain is disconnected because the member node is linked down or
the head port is linked down.
 Hold: The Head port is linked down->up.
On the Member node:
 Forwarding: After the instance is created, it will stay at this state.
 Hold: It is a middle state of the slave when 2 member ports are linked
down->up. It changes to the Forwarding state when it receives the clear-FDB
message or HOLD timer timeout.
On the Tail node:
 Discover: The chain is not completed yet.
 Monitor: The chain is completed and healthy.
 Fault: The chain failed. The backup path is activated.
The ONE CHAIN instance entry status, including active, inactive, and etc.
Description