WO1999053714A1 - Procede et systeme de telechargement automatique de fichiers des profils et d'images associes a des elements de reseau optique - Google Patents

Procede et systeme de telechargement automatique de fichiers des profils et d'images associes a des elements de reseau optique Download PDF

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Publication number
WO1999053714A1
WO1999053714A1 PCT/US1999/008146 US9908146W WO9953714A1 WO 1999053714 A1 WO1999053714 A1 WO 1999053714A1 US 9908146 W US9908146 W US 9908146W WO 9953714 A1 WO9953714 A1 WO 9953714A1
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WIPO (PCT)
Prior art keywords
image
odac
ncp
primary
spf
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PCT/US1999/008146
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English (en)
Inventor
Keith A. Condict
James B. Wensink
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Ciena Corporation
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Publication date
Application filed by Ciena Corporation filed Critical Ciena Corporation
Priority to EP99918537A priority Critical patent/EP1036480A1/fr
Publication of WO1999053714A1 publication Critical patent/WO1999053714A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0876—Aspects of the degree of configuration automation
    • H04L41/0886—Fully automatic configuration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5603—Access techniques
    • H04L2012/5604—Medium of transmission, e.g. fibre, cable, radio
    • H04L2012/5605—Fibre
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5625—Operations, administration and maintenance [OAM]
    • H04L2012/5626—Network management, e.g. Intelligent nets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects

Definitions

  • the present invention is directed to an aspect of an optical network management system and, in particular, to a method and apparatus for automatically downloading image files related to particular network element modules to ensure proper communication between the network elements and the network management system.
  • Optical communication systems have traditionally been used for long-haul point-to- point transmissions carrying high volume traffic.
  • An approach to increasing the transmission capacity of these systems is to employ wavelength division multiplexing (WDM), wherein a plurality of optical channels, each at a respective wavelength, are multiplexed and transmitted over a waveguide medium to a plurality of receivers.
  • WDM wavelength division multiplexing
  • the selected bandwidth of the optical channels corresponds to the low loss window of the waveguide medium, for example, silica-based fibers.
  • a typical point-to-point or long-haul optical communications network employing WDM or DWDM technology may include at least two end terminal nodes for transmitting and receiving each of the optical channels.
  • the terminal nodes usually provide interfaces to other fiber optic transmission systems.
  • a plurality of amplifiers, spaced along the path between the terminal nodes, are used to amplify the signals transmitted therebetween. The number of amplifiers corresponds to the transmission distance between the terminal nodes.
  • Each terminal and amplifier node typically includes a plurality of optical and/or electrical components to process and/or transmit the information carried by the optical signals.
  • communications signals are transmitted over a limited geographic area to various nodes within a network.
  • nodes within the network typically include optical receivers for receiving the transmitted signals, photodetectors for generating electrical signals in response to the received signals, and optical transmitters for supplying information signals to additional network nodes.
  • These smaller systems may or may not include amplifiers depending on the distance over which the transmission signals travel.
  • network management systems including management software and associated user interfaces, have become an integral part of communication systems. These network management systems provide information related to each component within the network.
  • components within these types of networks must be constantly monitored, and be able to report information regarding the component's operating status.
  • the management system In the event of failure, such as a fiber break, component malfunction, or network configuration change, the management system must be able to recognize and accommodate these conditions, e.g., by re-routing system traffic.
  • communications systems provide for an open architecture, where the network may be expanded to provide increased signal traffic, network management systems must be able to accommodate and process these expanding systems.
  • Typical network management systems have the ability to communicate with high level support protocols such as SNMP (Simple Network Management Protocol).
  • SNMP Simple Network Management Protocol
  • the present invention is organized about the concept of providing a method and apparatus for automatic downloading and updating of network element software profile files and network element module software images.
  • Updating of network element software profile files and network element module software images may be achieved via a software routine which may be stored in the RAM of each node control processor for execution by the CPU of each node control processor.
  • the software may also be stored on any computer readable medium, e.g., floppy disk, CD-ROM, hard drive, ZIP disk, etc., for installation on a network, e.g., by downloading to the network NCPs.
  • the routine includes instructions which may be initiated through the network management system by an operator, thereby obviating the need for manually updating the module software images, as required in the prior art.
  • a new software profile file is first downloaded into the flash memory of each network node control processor as the node control processor secondary software profile file.
  • the secondary node control processor image is then reconciled with the entry in the new software profile file. If the secondary node control processor image does not match the entry in the new secondary software profile file, then the proper secondary node control processor image is automatically downloaded or copied from another location. Once the secondary node control processor image has been reconciled, the secondary images of the optical data acquisition and control network element modules are reconciled with their corresponding entries in the new secondary software profile file.
  • the downloading process may be based on a search algorithm which locates, the most bandwidth efficient way, via service channel signal of system, to download the image to the network element module.
  • an operator action initiates the process of switching the primary and secondary software profile files and images, and resetting all modules to guarantee that the new primary images are also the running images.
  • the new set of software images then may be tested prior to an operator action which initiates the copying of the primary software profile file and primary images to the secondary software profile file and secondary images.
  • new network management software revisions may be installed, new modules may be inserted into any network element, and new network elements may be added to network with the software profile file for each network element and the software images for each module within the network element being downloaded automatically to ensure consistent network management operation.
  • the primary image is maintained as the running image at all times, and disruption of the primary image is limited through use of the secondary images and profiles.
  • the primary and secondary images may be further reconciled each time the node control processors are reset. Again, this procedure is designed to limit the disruption of the primary image and to maintain the running image as the primary image at all times.
  • the node control processor primary image is first reconciled, after which all optical data acquisition and control module primary images are reconciled. The secondary images are then reconciled independently.
  • the primary and secondary images may be further reconciled each time an optical data acquisition and control module is reset.
  • the primary images are first reconciled, after which the secondary images are reconciled.
  • FIG. 1 is a schematic illustration of a portion of an exemplary optical communication system in accordance with the present invention
  • FIG. 2 is a schematic illustration of a particular span within the fiber optic communication system of FIG. 1
  • FIG. 3 is a schematic illustration of the amplifier network element depicted in FIG. 2
  • FIG. 4 is a flowchart illustrating the general flow of a software routine in accordance with the present invention
  • FIGS. 5A-5C are a flow chart illustrating showing the flow of an exemplary embodiment of a software routine in accordance with the present invention
  • FIG. 6 is a flowchart illustrating the general flow of a software routine for reconciling the primary and secondary images upon a node control processor reset in accordance with the present invention
  • FIG. 7 is a flowchart illustrating the general flow of a software routine for reconciling the primary and secondary images upon an optical data acquisition and control module reset in accordance with the present invention.
  • FIG. 1 illustrates, in diagrammatic form, an exemplary optical communication system 10 in accordance with a feature of the present invention.
  • system 10 is depicted as a point-to-point WDM system, the principles of the present invention may also be applied to other network configurations, including rings, and is not limited to WDM networks.
  • the principles of the present invention may be applied to any communications network having a plurality of network elements configured to provided monitoring information for use with network management or monitoring software.
  • a plurality of optical communication signals e.g. SONET formatted signals
  • SONET fiber optic transmission system
  • each SONET optical signal to a corresponding one of a plurality of wavelengths or channels.
  • the wavelengths are combined using a multiplexer included within interface unit 30, as is commonly understood in the art, and supplied to fiber 35 for transmission to second interface unit 50 via amplifiers 40, . . . 40;.
  • the amplifiers 40 j . . . 40 ; regenerate the WDM signal along fiber 35 according to predetermined transmission distances.
  • the communication signals are received by interface unit 50 which includes a demultiplexer for separating the individual optical channels. Once separated, the optical channels are supplied to respective receivers, which may be included in interface unit 50. The receivers, in turn, reconstruct the SONET optical signals, or signals having another protocol, for transmission to FOTS 60, or an interface unit (not shown) via lines 55, . .55 N .
  • span 45 1 includes interface unit 30 and line amplifier 40,.
  • span 45 j runs from amplifier 40 j to interface unit 50.
  • communication system 10 can include any number of spans and any number of network elements within a span depending on the type and configuration of the network.
  • a service channel signal In addition to the information bearing communication signals carried in system 10, a service channel signal, usually outside the payload channel bandwidth, is also transmitted.
  • the payload channels for example, may be in the 1.5 ⁇ m range and the service channel signal may be within the 1.3 ⁇ m range.
  • the service channel signal carries diagnostic and span topology information for use in a network management system 12.
  • the service channel signal may be converted to an electrical service channel signal by FOTS 20, for example, which may be supplied to the network management system via a serial or parallel interface line 16.
  • the network management system 12 includes network management software operating on a general purpose computer 22 for sending and receiving data on the service channel.
  • An operator may manipulate system configuration, monitor network performance, perform diagnostic testing, etc., via a graphical user interface (GUI) generated on the display 24 by the management software, which two-way allows communication with each node and network element in the network through the service channel and a user input/output device, e.g, keyboard 14.
  • GUI graphical user interface
  • the network management software may also provide for automated network traffic re-routing in the event of a network disruption, e.g., a fiber break.
  • each network element includes a node control processor (NCP) and a service channel modem (SCM).
  • NCP node control processor
  • SCM service channel modem
  • FIG. 2 schematically illustrates span 45, where interface unit network element 30 is coupled to amplifier network element 40 ⁇
  • Interface unit 30 includes a service channel modem 70 and an
  • line amplifier network element 40 which can be, for example, an erbium doped fiber supplied by one or more pumping modules 90, also includes a service channel modem 80, and an NCP 85.
  • Line 35 typically includes a first fiber for carrying communications signals in a first east direction, as indicated by arrow E, and a second fiber for carrying communication signals in a second or west direction, as indicated by arrow W.
  • SCMs 70 and 80 included in interface unit 30 and line amplifier 40 receive and transmit the service channel signal via line 35 to their associated NCPs, 75,85.
  • a particular NCP contains information for the various hardware modules which make up a particular network element.
  • amplifier 40 x may include a plurality of modules, e.g. an SCM 80, pump sources 90, couplers (not shown), etc., which together make up the amplifier network element 40 j .
  • interface unit network element 30 may include a plurality of modules, e.g., an SCM 70, light sources (not shown), modulating components (not shown), etc.
  • the respective NCPs for each of these network elements 30, 40 j contain identification information relating to each of these modules. With this identification information, communication by and between NCPs and the modules thereof via the service channel signal is recognized and controlled by the network management software.
  • NCPs 75 and 85 may be commercially available general purpose microprocessors which track operating information for the associated network element, e.g., interface unit 30 and 40 l3 respectively. As illustrated, for example, in FIG. 3 which depicts network element
  • each NCP includes a central processing unit (CPU) 100 and memory storage, such as a flash memory 110 and/or random access memory (RAM) 112.
  • each network element module may include memory storage 88, 98, and a CPU, e.g 82, 92 which communicates with the NCP for controlling and monitoring performance of the module.
  • the identification and operation information, i.e. the software images, for the network element modules which make up the network element, including the NCP, is contained in a software profile file (SPF) stored in the NCP flash memory 110.
  • SPF software profile file
  • each NCP 85 includes a primary 106 and secondary 108 SPF stored in its flash memory device 110.
  • each network element module e.g., SCM 80, pump 90, and NCP 85 etc.
  • each network element module includes a primary 84, 94, 102 and secondary 86, 96, 104 software image, respectively, stored in its memory device 88, 98, 110.
  • the primary SPF is used as the running profile for each network element 40 1? and the primary software image in each module 80, 85, 90 is used as the running image for each module of the network element, as recognized by the network management software.
  • the secondary SPF 108 is used as a temporary SPF for updating the primary SPF prior to transferring the newly loaded SPF to the running or primary SPF.
  • the secondary software image 86,96, 104 is used as a temporary image for updating the software image associated with the module prior to transferring the newly loaded image to the running or primary image. This allows all the secondary SPFs and images to be reconciled among all the network elements and modules within a network element prior to switching the secondary images to the running images, thereby limiting system disruption.
  • automatic downloading and updating of network element SPFs and network element module software images is achieved via a software routine which may be stored in the RAM of each NCP for execution by the CPU of each NCP.
  • the routine includes instructions which may be initiated through the network management system by an operator.
  • software routine may be stored at a variety of locations and initiated in a variety of manners.
  • network element 40 As illustrated in FIG. 3, and also with reference to the flowchart provided in FIG. 4. It is to be understood that the description provided with reference to element 40j, applies to all network elements, which may have different network element modules.
  • a detailed description of the steps performed by an exemplary software routine according to the invention will be provided following the general description.
  • a new SPF is first downloaded into the secondary SPF 108 of the NCP 85.
  • the secondary NCP image 104 is then reconciled 130 with the entry in the new SPF. If the secondary NCP image 104 does not match the entry in the new SPF, then the proper secondary NCP image is automatically downloaded or copied from another location.
  • the secondary images e.g. 86, 96 of the optical data acquisition and control (ODAC) network element modules are reconciled 140 with their corresponding entries in the new SPF. If the secondary ODAC images do not match the corresponding entries in the new SPF, then the proper ODAC images are downloaded. The downloading process is based on a search algorithm which locates, the most bandwidth efficient way, via service channel signal of system 10, to download the image to the network element module.
  • ODAC optical data acquisition and control
  • an operator action initiates the process of switching 150 the primary and secondary profiles 106,108 and images, 84 and 86, 94 and 96, and 102 and 104, and resetting all modules to guarantee that the new primary images are also the running images.
  • the new set of software images then may be tested prior to an operator action which initiates the copying 160 of the primary SPF 106 and primary images 84, 94, 102 to the secondary SPF 108 and secondary images 86, 96, 104 .
  • FIGS. 5A-5C there is provided a flowchart showing the flow of an exemplary software program for automatically updating network element SPFs and software images in accordance with the present invention.
  • the software may be written in a variety of languages to achieve the described functions, as will be readily apparent to those skilled in the art.
  • FIG. 4 it is to be understood, therefore, that the flowchart in FIGS. 5A-5C is for purposes of illustration of the flow of one embodiment of a software routine in accordance with the present invention.
  • the software may be resident in the RAM the network element NCPs for operating on the NCP CPUs.
  • the software may be originally stored on a computer readable medium, e.g., a floppy disk, CD-ROM, hard drive, ZIP disk, etc., and downloaded to the NCPs from, for example, the network management system via the service channel, through a separate file server, directly to the NCP through an RS-232 connection, etc.
  • a computer readable medium e.g., a floppy disk, CD-ROM, hard drive, ZIP disk, etc.
  • an operator action the network management software running on the general purpose computer 22 initiates execution of the software routine according to the invention which causes the SPF defining the appropriate software image for each module within a network element to be downloaded via the service channel to the NCP flash memory 110 as the secondary SPF 108.
  • a file transfer procedure such as a trivial file transfer protocol (TFTP) or file transfer access and management (FTAM), can be used to download the new image profile into the flash memory of NCP 85.
  • TFTP trivial file transfer protocol
  • FTAM file transfer access and management
  • a TFTP command may be initiated to a TFTP server 26 (FIG. 1) associated with the network management system 10 to download the new SPF from the server 26 to the NCP 85 via the service channel.
  • the downloading may be performed locally by using a CRAFT
  • a verification 210 is performed to determine if the download of the new secondary SPF 108 was successfully completed without interruption. If it was unsuccessful, the download operation will timeout 230 after a period of time, e.g., 10 seconds. A secondary profile attribute is then marked with a download error condition. The download operation is re-initiated 220 at predetermined intervals until a secondary profile file 108 is downloaded successfully, as verified by step 210.
  • the header and data sections of the secondary SPF which may be in ASCII format, are parsed and a new profile image structure is built 240 in the NCP RAM 103.
  • the secondary profile image structure is a data structure which the executable software routine can use in performing the steps in accordance with the invention, and represents the new secondary SPF 108 stored in NCP 85.
  • the secondary profile image structure is then checked for format errors 250. If a format error is found, a secondary SPF attribute is marked accordingly, for example, with an alarm state header error condition.
  • the download 200 operation is re-initiated periodically, for example, every 10 seconds, until a secondary SPF is downloaded which can be parsed into a secondary profile image structure 240 without error.
  • the secondary NCP image 104 is reconciled, e.g. as indicated in steps 260-310. If this secondary NCP image 104 matches 260 the entry in the new secondary SPF 108, a verification 310 may be performed and then reconciling of the ODAC images may be automatically initiated at step 320. Otherwise, at step 270 if the primary NCP image 102 matches 270 the entry in the new secondary SPF 108, the reconciling includes copying that primary NCP image 102 to the secondary NCP image 104.
  • the reconciling includes downloading 290 the secondary NCP image in the corresponding secondary SPF entry from, for example, a TFTP server 26 (FIG. 1). If the reconciling operation fails 300, retries are performed periodically until it successfully completes.
  • the secondary images of all ODAC network element modules are reconciled, e.g. as indicated in steps 320-370.
  • reconciling of the secondary ODAC image is initiated. If an image that matches the entry in the new secondary SPF 108 for the secondary ODAC image that needs reconciling can be located 330 in a local module within the associated network element 40, the reconciling includes copying 340 the located image from the local module to the secondary ODAC image that needs reconciling.
  • a search 335 of the other network elements on the optical system 10 is initiated to locate a non-local module that contains the desired image. If the image is found in a non-local module of another network element on the optical system 10, the reconciling includes copying 345 the image from the non-local module that contains the image on the nearest network element to interface unit 40,. For example, if the image is located in a module of amplifier network element 40j and interface unit 50, the image will be read from amplifier unit 40 ; . If the image cannot be located in any network element of optical system 10, the reconciling includes downloading 350 the secondary ODAC image, e.g., from a server 26 (FIG. 1) using a file transfer procedure TFTP or FTAM.
  • a verification 360 may be performed to ensure that reconciling was completed successfully. If the reconciling operation fails, retries may be performed periodically, for example, every 30 seconds, until it successfully completes. If the secondary SPF does not have an entry for the particular module associated with NCP 85, an attribute associated with the reconciling of the secondary profile is marked as not reconciled. When all secondary images have been successfully reconciled, the secondary SPF is marked as reconciled, and an operator action initiates switching 380 of the secondary SPFs, secondary NCP images, and secondary ODAC images to the corresponding primary SPFs and images. This operation makes the secondary SPF and secondary NCP and ODAC images the active SPF and images in interface unit 40, by swapping the primary and secondary profiles and images in each module and performing a module reset.
  • Verification testing 390 may be performed to verify the network is operational. Once verification testing is complete, the new SPF images are ready to be made the operating images for NCP 85. The new primary SPF and images are copied 400 and stored as the secondary SPF and images. This ensures that the secondary SPF and images are consistent with the primary or running SPF and images for local flash SPF and image backup during online operation.
  • the primary and secondary NCP and ODAC images may be further reconciled each time the NCP resets.
  • the procedure is designed to limit the disruption of the primary image and to maintain the running image as the primary image at all times.
  • the primary NCP image 102 is first reconciled, after which all ODAC module primary images 84,94 are simultaneously reconciled.
  • the secondary NCP image 108 and all secondary ODAC module images 86,96 are then reconciled independently when their respective primary images have been reconciled.
  • the first step 410 may be to initialize the attributes which define the reconciling status.
  • the primary 106 and secondary 108 SPFs are downloaded if they were not present in the NCP flash memory 110 at the time of the reset, as determined from the attribute status assigned in the first step 410.
  • the primary and secondary SPFs may then be uploaded 430 to the NCP RAM 112 for building internal data structures representing the SPFs.
  • the primary NCP image 102 is then reconciled 440.
  • the reconciling is initiated if the primary NCP image does not match its associated entry in the new primary SPF 106. If the secondary NCP image 104 matches the entry in the new primary SPF, the reconciling includes copying the secondary NCP image 104 to the primary NCP image 102. Otherwise, the reconciling includes downloading the image in the primary SPF entry to the secondary NCP image 104 from the server 26, and then transferring this image to the primary NCP image 102.
  • the NCP is then reset to guarantee that the running image matches the new primary NCP image.
  • the reconciling operation fails (e.g., the TFTP server is offline, or the image is not resident on the TFTP server), the operation times out and retries, e.g., every 30 seconds, until it successfully completes. If the primary SPF 106 does not have an entry for the primary NCP
  • the secondary NCP image 104 is reconciled. If the primary NCP image 102 matches the entry in the new secondary SPF 108, the reconciling includes copying that primary NCP image 102 to the secondary NCP image 104. If the primary NCP image does not match the corresponding entry in the new secondary SPF, the reconciling includes downloading the secondary NCP image in the corresponding secondary SPF entry from the server 26. If the reconciling operation fails, retries are performed periodically until it successfully completes. In step 460 all primary ODAC images 84,94 are reconciled. Reconciling is initiated for each primary ODAC image that does not match its corresponding entry in the primary SPF 106.
  • the reconciling includes copying the located image to the secondary ODAC image 86,96. If the image cannot be located in the network element 40 j , the reconciling includes downloading the image from the server 26 to the secondary ODAC image.
  • the image Once the image has been copied or downloaded to the secondary ODAC image, it is transferred to the primary ODAC image 84,94.
  • the ODAC is then reset to guarantee that the running image matches the new primary ODAC image. If the reconciling operation fails, the operation times out and retries, e.g., every 30 seconds, until it successfully completes. If the primary SPF 106 does not have an entry for the primary ODAC image, then the primary SPF is marked with an alarm indicating that it has not been reconciled.
  • step 470 the secondary ODAC images 86,96 are reconciled. Reconciling is initiated for each secondary ODAC image that does not match the corresponding entry in the new secondary SPF 108. If an image that matches the entry in the new secondary SPF 108 for the secondary ODAC image that needs reconciling can be located in a local module within the associated network element 40, the reconciling includes copying the located image to the secondary ODAC image that needs reconciling.
  • a search of the other non-local network elements on the optical system 10 is initiated to locate a module that contains the desired image. If the image is found
  • the reconciling includes copying the image from the module that contains the image on the nearest network element to interface unit 40,. If the image cannot be located in any network element of optical system 10, the reconciling includes downloading the secondary ODAC image 86,96 from the server 26. Once the proper secondary ODAC image for each ODAC module that needs reconciling is copied or downloaded, a verification may be performed to ensure that reconciling was completed successfully. If the reconciling operation fails, retries may be performed periodically, for example, every 30 seconds, until it successfully completes. If the secondary SPF 108 does not have an entry for the particular module associated with NCP 85, an attribute associated with the reconciling of the secondary profile is marked as not reconciled.
  • the primary and secondary NCP and ODAC images are further reconciled each time an ODAC module 80,90 resets.
  • the procedure is designed to limit the disruption of the primary image and to maintain the running image as the primary image at all times.
  • the primary ODAC image 84,94 is first reconciled 500, after which the secondary ODAC image 86,96 is reconciled 510.
  • the reconciling of the primary and secondary ODAC images may be performed in the same manner indicated above with respect to steps 460 and 470 in FIG. 6.
  • updating of network element SPFs and network element module software images is achieved via a software routine which may be stored in the RAM of each NCP for execution by the CPU of each NCP.
  • the software may also be stored on any computer readable medium, e.g., floppy disk, CD-ROM, hard drive, ZIP disk, etc., for installation on a network by downloading to the network NCPs.
  • the routine includes instructions which may be initiated through the network management system by an operator, thereby obviating the need for manually updating the module software images, as required in the prior art.

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  • Computer Networks & Wireless Communication (AREA)
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  • Automation & Control Theory (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

On décrit un procédé et un système de téléchargement automatique et de mise à jour de fichiers des profils logiciels (SPF) associés à un élément de réseau, et de d'images logicielles associées à des modules de l'élément de réseau. Dans une forme d'exécution de l'invention, une routine exécutable par le logiciel de gestion du réseau déclenche le téléchargement d'un nouveau fichier des profils logiciels dans la mémoire flash de chaque processeur pilote nodal du réseau en tant que fichier des profils logiciels secondaire du processeur pilote nodal. L'image secondaire du processeur pilote nodal est ensuite rapprochée avec les données entrées dans le nouveau fichier des profils logiciels. Dans le cas où l'image secondaire du processeur pilote nodal ne s'accorde pas avec les données entrées, l'image secondaire appropriée est automatiquement téléchargée ou copiée d'un autre emplacement. Les images secondaires des modules optiques d'acquisition et de contrôle des données de l'élément de réseau sont rapprochées. Dans le cas où les images secondaires ne s'accordent pas avec les données entrées correspondantes dans le nouveau fichier des profils logiciels, les images appropriées sont alors téléchargées par la voie de service du système, de la manière qui exploite le mieux la largeur de bande. Une fois toutes les images secondaires rapprochées, les fichiers des profils logiciels primaire et secondaire et les images sont commutés. Après essai de contrôle, les fichiers des profils logiciels primaires et les images primaires sont copiés dans le fichier des profils logiciels secondaire et les images secondaires. Les images primaires et secondaires peuvent être rapprochées à nouveau chaque fois que les processeurs pilotes nodaux sont remis à zéro, ou chaque fois qu'un module optique d'acquisition et de contrôle des données est remis à zéro.
PCT/US1999/008146 1998-04-15 1999-04-14 Procede et systeme de telechargement automatique de fichiers des profils et d'images associes a des elements de reseau optique WO1999053714A1 (fr)

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EP99918537A EP1036480A1 (fr) 1998-04-15 1999-04-14 Procede et systeme de telechargement automatique de fichiers des profils et d'images associes a des elements de reseau optique

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US8186198P 1998-04-15 1998-04-15
US60/081,861 1998-04-15

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WO1999053714A1 true WO1999053714A1 (fr) 1999-10-21

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CN100417084C (zh) * 2005-07-06 2008-09-03 中兴通讯股份有限公司 保证网元控制处理器和管理控制单元数据一致性的方法

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US6359729B1 (en) 1998-11-17 2002-03-19 Corvis Corporation Optical communication system and component control architectures and methods
US6504646B1 (en) 1998-11-17 2003-01-07 Corvis Corporation Optical communication system and component control architectures and methods
US7088499B2 (en) 1998-11-17 2006-08-08 Corvis Corporation Optical communication system and component control architectures and methods
CN100417084C (zh) * 2005-07-06 2008-09-03 中兴通讯股份有限公司 保证网元控制处理器和管理控制单元数据一致性的方法

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