Generic Requirements for Wave Division Multiplexing (WDM) Element Management Systems (EMSs)
Document Number GR-2998
Issue Number 02
Issue Date Jan 2000
ABSTRACT: Issue 2 of GR-2998, Generic Requirements for Wavelength Division Multiplexing (WDM) Element Management Systems (EMS's), replaces Issue
This document provides generic requirements for Element Management Systems (EMS's) managing the Optical Network Elements (ONEs) of a
Wavelength Division Multiplexing (WDM) system. The generic requirements in this document support the management functions at the
Element Management Layer (EML) are described in GR-2869-, in managing ONRs, in providing operations communications between ONEs and
EMS's, and in providing a communication path for higher layer systems such as Network Management Systems (NMS's).
GR-2998 focuses on the requirements for Element Management Systems (EMS's) in managing ONES such as Optical Fiber Amplifiers (OFAs)
as described in GR-1312, Optical Add-Drop Multiplexers (OADMs) and Optical Terminal Multiplexers OTMs) are described in
GR-2979, and Optical Cross-Connects (OXCs) are described in GR-3009.
GR-2998 addresses WDM management from the perspective of an EMS. This issue specifies generic requirements for an EMS managing WDM
network elements, such as OFAs, OTMs, OADMs, Fiber Cross-Connects (FXCs), Wavelength Selective Cross-Connects (WSXCs), Wavelength
Interchanging Cross-Connects (WIXCs), and OXC hybrids supporting WDM functionality. These ONEs may be deployed in a variety of network
configurations such as Point-to-Point, Linear Chain, and Optical Channel Dedicated Protection Ring topologies.
This document defines EMS functions for managing WDM networks in the areas of Configuration Management, Performance Management,
Fault Management, Security Management, and Common Operations Management. No relevant accounting management features have currently been
defined for inclusion in this document.
A major change in Issue 2 of GR-2998 is the addition of EMS management of Optical Cross-Connects (OXCs). Sections 1 through 5 were
expanded to include new technical information, or to add definitions or requirements. Appendix A was added to Issue 2, and contains a
functional description of the EMS-ONE interface. For a more detailed list of changes, refer to Section 1.6.
This GR also includes one or more Issue List Reports (ILRs) that details open or closed technical issues in the main document. The
ILR(s) are automatically sent free of charge to the GR document purchaser.
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