Clear-Com Eclipse-Omega - Manual (Page 54)

Clear-Com
Eclipse Omega Instruction Manual
3 - 8
Figure 3-4: Ring Topology Single Card Set Redundancy
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. If the extent of
the failure is such that the active ring is unable to heal itself then the
system will switch to the secondary ring.
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. Switching to the
secondary ring will cause audio breaks or disturbances and temporary
loss of crosspoint data.
If a single fiber connection is lost on both rings the nodes adjacent to
the failures will loop-back their connections to the failed cables healing
the rings and the most intact ring will be used.
The Eclipse Configuration Software (ECS) will report any failures in the
fiber connection system.