Clear-Com Eclipse-Omega - Manual (Page 56)

Clear-Com
Eclipse Omega Instruction Manual
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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 system will switch to the secondary ring. Switching to the
secondary ring will cause audio breaks or disturbances and temporary
loss of crosspoint data.
The self healing mechanism is performed automatically by the fiber
linking card whereas the switch-over between redundant cards and
rings requires software or operator intervention.
Loss of a Single Node
If a node is lost on one ring due to a single fiber-optic linking card set
failure and the fiber-optic linking card set for the other ring is healthy
and the other ring is intact then the active ring always attempts to heal
itself. 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.
If the extent of the failure is such that the active ring is unable to heal
itself 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.
The self healing mechanism is performed autonomously by the fiber
linking card whereas the switch-over between redundant cards and
rings requires software or operator intervention.
If a single node is lost on both rings due to multiple fiber-optic linking
card set failures etc the nodes adjacent to the failed node(s) will
loop-back their connections to the failed node(s) healing the rings and
the most intact ring will be used. The configuration software will report
the failure.
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.