Cisco Cisco Prime Optical 9.6 Developer's Guide
Cisco Prime Optical 9.6.3 GateWay/CORBA Programmer Reference Guide
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4.1.4 Flow Domain
The Flow Domain (FD) associates more MFDs (one for each NE) and the server layer TPs of FPs
assigned to it. An FD indicates the potential for flow of traffic between a set of points and
contains an administrative partitioning of the connectionless network domain.
Connection-oriented subnetworks constitute the widespread transport layer (DWDM,
Connection-oriented subnetworks constitute the widespread transport layer (DWDM,
SONET/SDH). Connection-oriented subnetworks are shared by many network applications, but
connectionless subnetworks, such as Metro Ethernet, are deployed as smaller islands dedicated
to a single network application; for example, a corporate customer site.
FD provisioning capability allows a Network Management System (NMS) to instantiate and to
FD provisioning capability allows a Network Management System (NMS) to instantiate and to
change an FD so it can meet the infrastructure requirement (CPTPs, MFDs) needed to fulfill
requests (FDFr setup, tear-down, and modification) received from a service order system. An
ME can participate in more than one FD at the same layer rate, but in only one subnetwork.
For descriptions of Flow Domain provisioning and inventory interfaces, see the following
For descriptions of Flow Domain provisioning and inventory interfaces, see the following
sections:
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•
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4.1.5 EVC Flow Domain Fragment
An EVC Flow Domain Fragment (FDFr) is a logical entity that contains a transparent end-to-end
connectivity between two or more FPs (at the same connectionless layer) within an FD. The
FDFr represents a Virtual Private Network (VPN) for a single customer in the provider network
and enables the flow of traffic between FPs.
The server-layer CPTPs of the FPs that are connected through an FDFr must be assigned to
The server-layer CPTPs of the FPs that are connected through an FDFr must be assigned to
MFDs that are associated to the FD that contains the FDFr. If traffic arrives at a point that is a
member of an FDFr, it emerges at one or more of the other edge FPs that are members of the
same FDFr.
The edge FPs that act as endpoints of the FDFr can be associated with CPTPs connected to
The edge FPs that act as endpoints of the FDFr can be associated with CPTPs connected to
customer domains or to other provider domains (of the same or different providers). The VLAN
IDs of the FPs of the same FDFr must be equal and in particular must be the VLAN ID of the
outermost frame. An FDFr may also support untagged frames or may be unaware of frame tags.
An FDFr is used to model the EVC and has the following attributes:
• Directionality—Either bidirectional or unidirectional. For Ethernet, directionality is always
An FDFr is used to model the EVC and has the following attributes:
• Directionality—Either bidirectional or unidirectional. For Ethernet, directionality is always
bidirectional.
• Layered transmission parameters—Technology-specific parameters associated with the
layer that the FDFr is connecting; for example, Ethernet.
• aEnd TPs—A list of FPs that delimit the FDFr and characterize the edges (entry or exit
points). aEnd TPs are clients of the fdEdge CPTPs. For a bidirectional FDFr, this attribute may
be combined with zEnd TPs to obtain all the FPs that are associated to the FDFr. For a
bidirectional Point-to-Point (PPP) FDFr, it is recommended that you specify one TP in aEnd