Full Description

Generic Requirements for Synchronous Optical Network (SONET) File Transfer

Document Number GR-1250
Issue Number 02
Issue Date Dec 1999
Replaces TA-NWT-001250 Issue02

    ABSTRACT: This document replaces TA-NWT-001250.

    GR-1250, Generic Requirements for Synchronous Optical Network (SONET) File Transfer, Issue 2, replaces Issue 1.

    Synchronous Optical Network (SONET) Network Elements (NEs) can use the SONET Operations Communications Network in a standardized way for network management. Two management applications that are enhanced by the use of File Transfer protocol are software download and memory restoration processes. In the past, software download for transport NEs has usually been done locally, with an operator loading the software from a medium such as a floppy disk.

    Typically, a new generic will also require a corresponding hardware change, and, therefore, a craft dispatch. Digital Cross-Connects (DCSs) can have line-by-line configuration table changes made automatically by an Operations System (OS). Backups are done locally to nonvolatile memory, and remotely on a command-by-command basis. There are several problems with these methods. Line-by-line configuration table downloads and command-by-command backups are inherently slow. Nonvolatile memory is not sufficient to provide backup if the NE is physically lost (as in a fire or flood, for example).

    On a going forward basis, newer NEs may store only software load identifiers and generic identifiers in local memory; the backup copy may be stored separately. As more and more intelligent network elements are deployed, software download and remote backup of these NEs will consume proportionately more network provider resources. Use of a file transfer protocol such as the Open Systems Interconnection (OSI) File Transfer, Access, and Management (FTAM) protocol for SONET NEs can help alleviate these problems.

    This GR includes the Telcordia view of proposed generic requirements for the support of FTAM in SONET NEs.

    Issue 2 shows the coupling between this GR and related requirements in GR-253. Issue 2 also adds new requirements for using the FTP file transfer protocol to provide SONET file transfer applications (see Section 3.3). Issue 2 also provides additional details with respect to the CMISE information models required (Section 3.4), and also considers requirements that apply when using the TL1 Interactive Class protocol (Section 3.5).

    When using GR-1250, you may need to refer to GR-253, GR-1042, SIF-011, SIF-022, and/or ISO 8571. You may also want to refer to GR-472, GR-836, GR-2915, GR-2963, and/or SIF-025.

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