deploying and managing ip over wdm networks - Index of

128 Deploying and Managing IP over WDM Networks
• CS. The CS is the basic service delivered by the IP-MPLS or WDM
network and managed by WINMAN. The service is delivered either by
the IP-MPLS network meeting some QoS goals, resembling a
connection-oriented circuit, or by the WDM network.
• EMS. The EMS represents the abstraction of the subnetworks managed
by the technology-dependent management system.
• Termination point (TP). A TP is a logical abstraction of an end point
(actual or potential) of a topological (physical) link or a subnetwork
connection. The TP is contained within a managed element (ME), an
entity that is described later.
• Physical termination point (PTP). A termination point that is an actual
or potential end point of a topological (physical) link shall be abstracted
as a PTP. Essentially, this is a representation of a physical port.
• Connection termination point (CTP). A CTP is an actual or potential
end point of a subnetwork connection.
• Topological link. A topological link is a physical link between two PTPs.
A topological link has a name and references to the two PTPs. A topological
link reported by an EMS to a NMS will be between two MEs
managed by the same EMS. Depending on the capabilities of the EMS
and the MEs, the autodiscovery of topological links may or may not be
allowed by the EMS.
• Link connection. A link connection represents the transparent capacity
of transfer information characterized by a given signal identification
between two fixed points.
• SNC. An SNC relates CTPs. An SNC provides a transparent end-toend
connection through or within a subnetwork. The SNC may be created,
deleted, or modified by the INMS or by domain-specific NMS
and is implemented by means of one or several EMSs. The SNC is contained
in the subnetwork.
• Route. The route of a subnetwork connection shall be represented as an
ordered series of CTP names through which the subnetwork connection
traverses, including the working and the protection route. The
protection route is optional.
• ME. An ME is an abstraction used to represent network elements visible
across the interfaces.
7.3.2 Mapping Between the Model Entities and the Managed Resources
The WINMAN domain model is generic, thus providing an abstraction of the
physical elements of the IP over WDM network by capturing in a uniform