| Workshop on IP/Optical |
Chitose, Japan, 9-11 July 2002
Optical Network Management - Fault Management And Service Recovery
Presented by:
Mr. T. Trygar
Telcordia
As the capacity of optical networks continues to expand toward terabit levels,
fault management considerations become increasing important. This presentation
characterized the approach used in Study Group 15 to specify the management aspects
of optical transport equipment with emphasis on fault management support.
The approach is based on the methodology for specifying common equipment
management functions developed in G.7710. The presentation builds on the optical
transport management requirements and network layer structure specified in G.872.
It considers the Optical Transport Hierarchy (OTH) defined in G.709, especially the
overhead information definitions and the supported maintenance signals. The optical
transport equipment functional blocks specified in G.798 provide the input signals
for the equipment management functions. The G.798 fault cause management input signals
are catalogued by atomic function and the processing of these signals by equipment
management functions is described. The use of the Alarm Report Control (ARC) function
is discussed. Finally, a description of open fault management issues in optical transport
network element is presented including support for Emergency Telecommunications Services (ETS).
|
|
|
