deploying and managing ip over wdm networks - Index of

The WINMAN Management System Concept 107
considered to be the main focus of the WINMAN solution and
includes the set up of connections in the WDM layer to accommodate
overlying IP connections in a transparent manner.
2. Optical connectivity relating to the setting up and maintenance of optical
trails by the WINMAN operator in the manual mode only. This feature
is valuable in cases where it is desirable to set up manually connections
in the WDM layer (e.g., optimizing network capacity/performance
or dealing with optical element malfunctions).
When a connectivity service of the first category is requested to the
WINMAN system, we refer to it as an ICS. On the other hand, when the connectivity
request belongs to the second category, we term it simply as a CS. The
term CS is also extended to IP connectivity directly requested from the IP layer
and not through the integrated management layer. In other words, a CS is a single
domain connectivity request, whereas an ICS might involve both the IP and
the WDM domains.
Integrated Connectivity Service and the Network Resources States
Each step performed by the WINMAN system in the provide ICS, delete ICS,
and modify ICS UCs brings the ICS and the network resources into another
state. Figure 6.6 provides an overview of the different states of an ICS. The ovals
represent the states and the labeled arrows represent the processes to be executed
to get from one state to another.
Create
Reserved
design recorded,
resources not allocated
Implement
Provide
Remove
Figure 6.6 The ICS state diagram.
Release
Implemented
resources allocated and
provisioned in managed network,
service not operational
Activate
Delete
Deactivate
Operational
service operational