Instruction manual

ECLIPSE OMEGA MATRIX INSTRUCTION MANUAL
3-8
Loss of a Single Node
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 (ECS) will report the failure.
This applies to the situation where the fiber card itself has failed rather than the
matrix.
Loss of Two Fiber Connections
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 that 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 will report the failure. Note that 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
DUAL CARD SET REDUNDANCY
This is shown as in Figure 3-4 with both " Card set A" and "Card set B" fitted
in each node of the ring. In this case each Matrix Frame 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. Again in
the absence of an Uninterruptible Power Supply this configuration will not
protect against loss of the node or Matrix Frame itself.
Loss of Single Fiber Connection
If a single fiber connection is lost on one ring and the other ring is intact then the
active ring always attempts to heal itself by reversing the direction of data flow to
bypass the failed connection. The self healing mechanism is performed
autonomously by the fiber linking card
If the extent of the failure is such that the active ring is unable to heal itself the
the system will switch to the secondary ring. Switching to the secondary ring will
cause audio breaks or disturbances and temporary loss of crosspoint data.