Clear-Com HX System Frames - Manual (Page 89)

Loss of a single n ode
If a node is lost on the ring the nodes adjacent to the failed node will loop-back their
connections to the failed node healing the ring using the working remains of the ring. The
configuration software (EHX) will report the failure.
This applies to the situation where the fiber card itself has failed rather than the matrix.
Lo ss of two fiber c onnections
If two adjacent fiber connections are lost on the ring, this will be handled as for the loss of a
single node where the nodes adjacent to the failed node will loop-back their connections to
the failed node healing the ring.
The configuration software will report the failure correctly as two failed cables. If two non-
adjacent fiber connections are lost on the ring the nodes adjacent to the failures will loop-
back their connections to the failed cables healing the ring into 2 separate smaller rings. The
configuration software will report the failure.
Note:
In this instance the two sub-rings will be dependent on their Ethernet connections for
configuration and data transmission but there will be no audio path between them.
Loss of two nodes
If two adjacent nodes are lost on the ring this will be handled as for the loss of a single node
where the nodes adjacent to the failed node will loop-back their connections to the failed
nodes healing the ring. The configuration software will report the failure correctly as two
failed nodes.
If two non-adjacent nodes are lost on the ring the nodes adjacent to the failures will loop-
back their connections to the failed nodes healing the ring into 2 separate smaller rings. The
configuration software (EHX) will report the failure.
Note:
In this instance the two sub-rings will be dependent on their Ethernet connections for
configuration and data transmission but there will be no audio path between them.
7.4.2 Dual card set redundancy
Dual card set redundancy is shown in Figure 26: Ring topology; Dual card set redundancy ,
with both Card set A and Card set B fitted in each node of the ring. In this case each matrix
contains two Fiber-optic Linking card sets.
This approach affords full redundancy, offering protection against component failure within a
single Fiber-optic Linking Card Set
Note:
In the absence of an Uninterrupted Power Supply this configuration will not protect against
loss of the node or matrix itself.
89 Eclipse HX-Omega User Guide