WO2012000251A1 - 一种以太网无源光网络中光节点的软件升级方法及系统 - Google Patents

一种以太网无源光网络中光节点的软件升级方法及系统 Download PDF

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Publication number
WO2012000251A1
WO2012000251A1 PCT/CN2010/077850 CN2010077850W WO2012000251A1 WO 2012000251 A1 WO2012000251 A1 WO 2012000251A1 CN 2010077850 W CN2010077850 W CN 2010077850W WO 2012000251 A1 WO2012000251 A1 WO 2012000251A1
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Prior art keywords
software
onu
olt
sub
upgrade
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PCT/CN2010/077850
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English (en)
French (fr)
Inventor
武云飞
郭红涛
冉文军
陈辉
马兴睿
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中兴通讯股份有限公司
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Publication of WO2012000251A1 publication Critical patent/WO2012000251A1/zh

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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
    • H04L41/0803—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
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • 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 relates to the field of Ethernet passive optical networks, and in particular, to a software upgrade method and system for an Optical Network Unit (ONU) in an Ethernet Passive Optical Network (EPON).
  • ONU Optical Network Unit
  • EPON Ethernet Passive Optical Network
  • Ethernet passive optical networks have gradually become an important carrier network for broadband Internet access, voice communications, and IPTV (Internet TV) services.
  • IEEE 802.3-2005 standard and China's communication industry standard "Access Network Technical Requirements - Ethernet-based Passive Optical Network (EPON)", in PON Interface Protocol (MPCP (Muti-Point Control Protocol) Operation (Operation Administration and Maintenance), DBA (Dynamic Bandwidth Assignment) and QoS (Quality of Service), Multicast, Security, Voice Service Provision, TDM (Time) Division Multiplex, Time Division Multiplexing) has specific requirements for service provision, maintenance management, and so on.
  • MPCP Moti-Point Control Protocol
  • DBA Dynamic Bandwidth Assignment
  • QoS Quality of Service
  • Multicast Multicast
  • Security Voice Service Provision
  • TDM Time Division Multiplex, Time Division Multiplexing
  • IP-based upgrade which requires a large number of IP addresses, such as SNMP (Simple Network Management Protocol) and TR069 version upgrade
  • SNMP Simple Network Management Protocol
  • TR069 version upgrade
  • Each ONU needs to be upgraded separately.
  • Ethernet OAM packets have a transmission speed limit and cannot be upgraded quickly.
  • the OAM packet protocol interaction must be performed separately for each ONU upgrade.
  • the interaction process because of the speed and length of the OAM report text transmission, in order to avoid the impact on maintenance, Just ask the upgrade process to be as short as possible, if a single The ONU upgrade takes a few minutes, so it takes a long time for the ONU to upgrade the device of the mass terminal, which is not conducive to the solution of the software failure.
  • the technical problem to be solved by the present invention is to provide a software upgrade method and system for an OU in an EPON network, so as to overcome the problem of inconvenient upgrade of the OU in the prior art.
  • the present invention provides a software upgrade method for an optical node in an Ethernet passive optical network, including:
  • the network management system obtains the information of the optical node (ONU) connected to each line card of the OLT from the optical cable terminal device (OLT), and provides an interface for the user to select an ONU to be upgraded by the software to the OLT;
  • the OLT sends an upgrade command to the corresponding ONU in the manner of a unicast logical link identifier (LLID) according to the identifier of the ONU; after performing packetization processing on the software downloaded according to the storage address information, the LLID is broadcasted.
  • the sub-package is delivered in the manner of the software. After receiving all the sub-packages, the ONU that receives the upgrade command performs the software upgrade process.
  • the above method may also have the following features:
  • the information about the ONU obtained by the network management system from the OLT includes: type and number information of the ONU.
  • the above method may also have the following features:
  • Performing the packetization process on the software means: dividing the software into multiple data packets and adding a packet header to the first data packet, where the size of each data packet does not exceed the maximum capacity requirement of the data frame in the current network. .
  • the above method may further include:
  • the ONU that has not received the upgrade command discards the sub-packet.
  • the upgrade command carries the version information of the software, and the foregoing method may further include: After receiving the upgrade command, the ONU compares the version information with the locally saved version information of the software, and if it is determined that the software needs to be updated, the ONU returns an upgrade response to the OLT;
  • the OLT After the OLT sends all the sub-packets, the OLT initiates an integrity check command to the ONU that replies to the upgrade response by means of a unicast LLID.
  • the above method may also have the following features:
  • the steps of executing the software upgrade process include: After receiving the integrity check command, the ONU determines whether the sub-packet header information has been successfully received. The package, if yes, performs the software upgrade process; otherwise, requests the OLT to download the sub-package that was not successfully received, and after successfully receiving all the sub-packages, performs the software upgrade process.
  • the above method may also have the following features:
  • the step of the ONU executing the software upgrade process includes: the ONU writes each packet to the storage device, and after the write succeeds, sends a software upgrade notification to the OLT to activate the new version.
  • the present invention also provides a software upgrade system for an optical node in an Ethernet passive optical network, comprising: a network management system, an optical cable terminal device (OLT), and an optical node (ONU) connected to each line card of the OLT;
  • the network management system is configured to: obtain information about the ONUs connected to the line cards of the OLT from the OLT; and provide an interface for the user to select an ONU and related software that needs to be upgraded by the software, and select each ONU selected by the user.
  • the identifier and the storage address information of the software are sent to the OLT;
  • the OLT is configured to: send an upgrade command to the corresponding ONU in a manner of a unicast logical link identifier (LLID) according to the identifier of the ONU; and after performing packetization processing on the software downloaded according to the storage address information , delivering each sub-package in the form of a broadcast LLID;
  • LLID unicast logical link identifier
  • the ONU is configured to: after receiving the upgrade command, receive the sub-package, and after receiving all the sub-packages, perform a software upgrade process.
  • the above system can also have the following features:
  • the OLT is configured to perform packetization processing on the software in the following manner: Divided into multiple data packets and added a header to the first data packet, where the size of each data packet does not exceed the maximum capacity requirement of the data frame in the current network.
  • the above system can also have the following features:
  • the upgrade command carries version information of the software
  • the ONU is further configured to: after receiving the upgrade command, compare the version information with the locally saved version information of the software, and if it is determined that the software is required to be updated, reply the upgrade response to the OLT;
  • the ONU is configured to perform a software upgrade process after receiving all the sub-packages as follows: After receiving the integrity check command, determine whether the sub-packages have been successfully received according to the header information of the first sub-package, and if so, Then, the software upgrade process is executed; if not, the OLT is requested to download the unsuccessfully received sub-package, and after all the sub-packages have been successfully received, the software upgrade process is executed; the OLT is further configured to: After the sub-packaging, the integrity check command is initiated to the ONU that replies to the upgrade response by means of a unicast LLID.
  • the present invention introduces a protocol flow of a controllable multicast mode to perform normal software upgrades, avoids the problem of a large amount of duplicate data transmitted by the OAM channel, improves network management efficiency, and facilitates user operations.
  • FIG. 1 is a schematic diagram of interaction between a network management system, an OLT, and an ONU in an embodiment of the present invention. Preferred embodiment of the invention
  • the network management system acquires the information of the ONUs connected to the line cards of the OLT from the OLT, and provides an interface for the user to select an ONU and related software that needs to be upgraded by the software, and select the user.
  • the identifier of each ONU and the storage address information of the software are sent to the OLT; the OLT sends an upgrade command to the corresponding ONU in the manner of a unicast LLID (Logic Link Identifie) according to the identifier of the ONU; downloading the command from the network management system
  • the software performs sub-package processing on the software, and then delivers the sub-packages by means of the broadcast LLID. After receiving the sub-packages, the ONUs receiving the upgrade command perform the software upgrade process.
  • Step 101 The network management system obtains the ONU type and number of each line card connected to the OLT.
  • the user selects the ONU to perform the software upgrade operation through the network management system.
  • the network management system sends the identifier information of all the ONUs selected by the user to the OLT in the form of an ONU.
  • the storage address information of the related software selected by the user needs to be sent;
  • the user needs to select the same type of ONU for batch upgrade
  • Step 102 After receiving the ONU list and the software storage address information that are sent by the network management system, the OLT downloads the relevant software from the network management system and temporarily stores it on the OLT.
  • Step 103 The OLT sends an upgrade command to each ONU in the ONU list by using the unicast LLID, where the version information of the software may be carried; Step 104. After receiving the ONU, the received version information and the locally saved software may be The version information is compared, and if it is determined that the software update is required (ie, the locally saved version is lower than the received version), an update response is sent to the OLT;
  • Step 105 The OLT performs packetization processing on the downloaded software, and adds a packet header to the first data packet, where the size of each data packet does not exceed the maximum capacity requirement of the data frame in the current network; and then broadcasts the LLID manner.
  • Each sub-package is delivered; the ONU that has received the upgrade command caches the sub-package after receiving the sub-package; and the ONU that has not received the upgrade command discards the sub-package after receiving the sub-package;
  • Step 106 After the OLT sends all the sub-packets, the OLT sends an integrity check command to the ONUs that respond to the update responses by using the unicast LLID.
  • Step 107 After receiving the foregoing integrity check command, the ONU determines whether all the sub-packets have been successfully received according to the header information of the first sub-package. If yes, re-assembles the sub-packets according to the packet header information, and writes the combined software.
  • the memory completes the version upgrade operation; if not, requests the OLT to download the sub-package that was not successfully received, and after all the sub-packages have been successfully received, re-assembles the sub-packets according to the header information, and writes the combined software Memory; send a software upgrade notification to the OLT after successful writing, activate the new version; Step 108.
  • the OLT notifies the network management information of each ONU according to the software upgrade notification sent by each ONU.
  • the network management system is used to save the software version of the ONU and the software upgrade operation of the related ONU, that is, the information about the ONUs connected to the line cards of the OLT from the OLT; and the interface for the user to select from Software upgraded ONU and related software, and send the identifier of each ONU selected by the user and the storage address information of the software to the OLT;
  • the OLT is configured to send an upgrade command to the corresponding ONU in the manner of the LLID according to the identifier of the ONU; and is further configured to send the packet in a broadcast LLID manner after performing packetization processing on the software downloaded according to the storage address information;
  • the ONU is used for packetizing the software.
  • the ONU is used to divide the software into multiple data packets and add a header to the first data packet. The size of each data packet does not exceed the current network data. The maximum load capacity requirement of the frame.
  • the ONU is configured to receive the foregoing sub-package after receiving the upgrade command, and perform a software upgrade process after receiving all the sub-packets.
  • the upgrade command carries the version information of the software
  • the ONU is also used to compare the version information with the locally saved version information of the software after receiving the upgrade command. If it is determined that the software needs to be updated, the ONU may also be used to reply to the OLT for an upgrade response; After receiving the integrity check command, it is determined whether all the sub-packets have been successfully received according to the header information of the first sub-package, and if so, for performing the subsequent software upgrade process; otherwise, it is used to request the OLT to download the unsuccessfully received Subcontracting, and after all subcontracts have been successfully received, perform the subsequent software upgrade process;
  • the OLT can also be used to initiate an integrity check command to the ONU that responds to the upgrade response by unicast LLID after all the sub-packets are sent.
  • the invention upgrades the software by introducing a protocol flow of the controllable multicast mode, avoids the problem that the OAM channel transmits a large amount of duplicate data, improves the efficiency of the network management, and facilitates user operations.

Abstract

一种以太网无源光网络中光节点的软件升级方法及系统，所述系统包括：网管系统、光缆终端设备（OLT）及OLT下各线卡连接的光节点（ONU）；所述方法包括：网管系统从OLT中获取其下各线卡连接的ONU的信息，且提供界面供用户从中选择需要进行软件升级的ONU及相关软件，并将用户选取的各ONU的标识及该软件的存储地址信息发送给OLT；OLT按照ONU的标识以单播逻辑链路标识（LLID）的方式向对应ONU发送升级命令；在对根据存储地址信息下载的软件进行分包处理后，以广播LLID的方式下发各分包；收到升级命令的ONU接收完所有分包后，执行软件升级流程。与现有技术相比，本发明提高了网管效率和便利了用户操作。

Description

一种以太网无源光网络中光节点的软件升级方法及系统
技术领域
本发明涉及以太网无源光网络领域， 尤其涉及一种以太网无源光网络 ( Ethernet Passive Optical Network,简称为 EPON )中光节点（ Optical Network Unit, 简称为 ONU ) 的软件升级方法及系统。 背景技术
随着 FTTx ( Fiber-to-the-x, 光纤接入） 网络的大量部署， 以太网无源光 网络已逐渐成为实现宽带上网、 语音通讯、 IPTV (网络电视）业务的重要 载网络。 IEEE 802.3-2005标准和我国通信行业标准《接入网技术要求——基 于以太网方式的无源光网络（ EPON )》，在 PON接口协议（ MPCP ( Muti-Point Control Protocol , 多点控制协议) 、 ΟΑΜ ( Operation Administration and Maintenance , 操作管理及维护） 扩展等、 DBA ( Dynamically Bandwidth Assignment, 动态带宽分配）和 QoS ( Quality of Service , 服务质量） 、 组播、 安全性、 语音业务提供、 TDM ( Time Division Multiplex, 时分复用）业务提 供、 维护管理等方面都有具体的要求。
目前 EPON系统软件升级的方法主要有两类：一类是通过 IP方式的升级， 需要占用大量的 IP地址， 如 SNMP ( Simple Network Management Protocol, 简单网络管理协议）及 TR069版本升级；另一类通过 TFTP( Trivial File Transfer Protocol, 简单文件传输协议） +OAM的方式升级， 需要每个 ONU单独升级， 同时以太网 OAM报文有发送速度限制， 不能进行较快的交互升级。
由于现有的 IP方式的升级， 需占用大量的 IP地址， 而且每个 ONU的 IP 地址的配置操作都需要手工进行处理， 不能达到零配置的操作， 对业务开通、 系统维护都会带来很大的不便。
对于通过 EPON OAM的升级方式， 对每个 ONU的升级都要单独进行 OAM报文的协议交互， 在交互过程中， 因为受到 OAM报文本身发送速度和 长度的限制， 为了避免对维护的影响， 就要求升级过程尽量简短， 如果单个 ONU升级需要几分钟， 那么对于 ONU这种海量终端的设备升级需要花费很 长的时间才能完成， 不利于软件故障的解决。 发明内容
本发明要解决的技术问题是提供一种 EPON网络中 OU 的软件升级方 法及系统， 以克服现有技术中 OU 升级不便的问题。
为解决上述问题， 本发明提供了一种以太网无源光网络中光节点的软件 升级方法， 包括：
网管系统从光缆终端设备（ OLT )中获取所述 OLT下各线卡连接的光节 点 ( ONU ) 的信息， 且提供界面供用户从中选择需要进行软件升级的 ONU 给所述 OLT;
所述 OLT按照所述 ONU的标识以单播逻辑链路标识（ LLID )的方式向 对应 ONU发送升级命令；在对根据所述存储地址信息下载的所述软件进行分 包处理后， 以广播 LLID的方式下发各分包； 收到所述升级命令的 ONU接收 完所有分包后， 执行软件升级流程。
上述方法还可具有以下特征：
所述网管系统从所述 OLT中获取的 ONU的信息包括： ONU的类型及编 号信息。
上述方法还可具有以下特征：
对所述软件进行分包处理是指： 将所述软件划分为多个数据包且为首个 数据包加上包头， 其中， 每一数据包的大小不超过当前网络中数据帧的最大 承载量要求。
上述方法还可包括：
未收到所述升级命令的 ONU在收到所述分包后，对所述分包进行丟弃处 理。
所述升级命令中携带有所述软件的版本信息， 上述方法还可包括： ONU收到所述升级命令后，将其中的版本信息与本地保存的该软件的版 本信息进行比较， 如判断出需要进行该软件的更新， 则向所述 OLT回复升级 向应；
所述 OLT在下发完所有分包后， 通过单播 LLID的方式向回复所述升级 响应的 ONU发起完整性检查命令。
上述方法还可具有以下特征：
收到所述升级命令的 ONU接收完所有分包后，执行软件升级流程的步骤 包括： ONU在收到所述完整性检查命令后， 根据首个分包的包头信息判断是 否已成功接收所有分包， 如是， 则执行软件升级流程； 否则， 向所述 OLT请 求下载未成功接收的分包， 并在已成功接收到所有分包后， 执行软件升级流 程。
上述方法还可具有以下特征：
所述 ONU执行软件升级流程的步骤包括： 所述 ONU将各分包写入存储 设备， 写入成功后向 OLT发送软件升级通知， 激活新版本。
本发明还提供了一种以太网无源光网络中光节点的软件升级系统，包括： 网管系统、光缆终端设备（ OLT )及所述 OLT下各线卡连接的光节点（ ONU )； 所述网管系统设置为：从所述 OLT中获取所述 OLT下各线卡连接的 ONU 的信息；还用于提供界面供用户从中选择需要进行软件升级的 ONU及相关软 件， 并将用户选取的各 ONU 的标识及所述软件的存储地址信息发送给所述 OLT;
所述 OLT设置为： 按照所述 ONU的标识以单播逻辑链路标识（ LLID ) 的方式向对应 ONU发送升级命令；以及在对根据所述存储地址信息下载的所 述软件进行分包处理后， 以广播 LLID的方式下发各分包；
所述 ONU设置为： 在收到所述升级命令后，接收所述分包， 并在接收完 所有分包后， 执行软件升级流程。
上述系统还可具有以下特征：
所述 OLT是设置为以如下方式对所述软件进行分包处理： 将所述软件划 分为多个数据包且为首个数据包加上包头， 其中， 每一数据包的大小不超过 当前网络中数据帧的最大承载量要求。
上述系统还可具有以下特征：
所述升级命令中携带有所述软件的版本信息；
ONU还设置为： 在收到所述升级命令后， 将其中的版本信息与本地保存 的该软件的版本信息进行比较， 如判断出需要进行该软件的更新， 则向所述 OLT回复升级响应；
所述 ONU是设置为以如下方式在接收完所有分包后， 执行软件升级流 程： 在收到完整性检查命令后， 根据首个分包的包头信息判断是否已成功接 收所有分包， 如是， 则执行软件升级流程； 如不是， 则向所述 OLT请求下载 未成功接收的分包， 并在已成功接收到所有分包后， 执行软件升级流程； 所述 OLT还设置为： 在下发完所有分包后， 通过单播 LLID的方式向回 复所述升级响应的 ONU发起所述完整性检查命令。
与现有技术相比较， 本发明通过引入类可控组播方式的协议流程来进行 软件的正常升级， 避免了 OAM通道传输大量的重复数据的问题， 提高了网 管效率和便利了用户操作。 附图概述
图 1是本发明实施例中网管、 OLT、 ONU之间的交互示意图。 本发明的较佳实施方式
下面结合附图对本发明网管， OLT和 ONU之间交互方法进行说明。 本发明所述方法的基本构思是： 网管系统从 OLT中获取该 OLT下各线 卡连接的 ONU 的信息， 且提供界面供用户从中选择需要进行软件升级的 ONU及相关软件， 并将用户选取的各 ONU的标识及该软件的存储地址信息 发送给 OLT; OLT按照上述 ONU的标识以单播 LLID ( Logic Link Identifie, 逻辑链路标识）的方式向对应 ONU发送升级命令；从网管系统中下载该相关 软件， 对该软件进行分包处理， 然后以广播 LLID 的方式下发各分包； 收到 上述升级命令的 ONU接收完所有分包后， 执行软件升级流程。
步骤 101. 网管系统获取 OLT下各个线卡连接的 ONU类型和编号； 用 户通过网管系统选择 ONU进行软件升级的操作，网管系统将用户选出的所有 ONU的标识信息以 ONU列表的方式发送给 OLT, 同时还需发送用户选择的 相关软件的存储地址信息；
优选地， 用户需选择同样型号的 ONU进行批量升级；
步骤 102. OLT收到网管下发的需要升级的 ONU列表及软件的存储地址 信息后， 从网管系统下载相关的软件暂存于 OLT上；
步骤 103. OLT通过单播 LLID向 ONU列表中的各个 ONU发送升级命 令， 其中可携带上述软件的版本信息； 步骤 104. ONU收到后， 可将接收到的版本信息与本地保存的该软件的 版本信息进行比较， 如判断出需要进行该软件的更新 （即本地保存的版本比 接收到的版本低） ， 则向 OLT发送更新响应；
步骤 105. OLT对其下载的软件进行分包处理， 且为首个数据包加上包 头， 其中， 每一数据包的大小不超过当前网络中数据帧的最大承载量要求； 然后通过广播 LLID的方式下发各分包； 其中， 收到过升级命令的 ONU在收 到分包后， 会緩存该分包； 而未收到升级命令的 ONU在收到分包后， 直接丟 弃该分包；
步骤 106. OLT在下发完所有分包后， 通过单播 LLID的方式向上述各回 复更新响应的 ONU发送完整性检查命令；
步骤 107. ONU收到上述完整性检查命令后，根据首个分包的包头信息 判断是否已成功接收所有分包， 如是， 则按照包头信息重新组合各分包， 并 将组合好的软件写入存储器， 完成版本升级操作； 如不是， 则向 OLT请求下 载未成功接收的分包， 并在已成功接收到所有分包后， 按照包头信息重新组 合各分包， 并将组合好的软件写入存储器； 在写入成功后向 OLT发送软件升 级通知， 激活新版本； 步骤 108. OLT按照各个 ONU发来的软件升级通知 ,通知网管各个 ONU 的软件升级信息。
网管系统， 其用来保存 ONU的软件版本和控制相关 ONU的软件升级操 作， 即用于从 OLT中获取该 OLT下各线卡连接的 ONU的信息； 还用于提供 界面供用户从中选择需要进行软件升级的 ONU及相关软件，并将用户选取的 各 ONU的标识及该软件的存储地址信息发送给 OLT;
OLT, 用于按照上述 ONU的标识以 LLID的方式向对应 ONU发送升级 命令； 还用于在对根据上述存储地址信息下载的软件进行分包处理后， 以广 播 LLID的方式下发各分包； 其中， ONU用于对软件进行分包处理可以是指： ONU用于将上述软件划分为多个数据包且为首个数据包加上包头， 其中， 每 一数据包的大小不超过当前网络中数据帧的最大承载量要求。
ONU, 用于在收到上述升级命令后， 接收上述分包， 并在接收完所有分 包后， 执行软件升级流程。
优选地， 上述升级命令中携带有上述软件的版本信息；
ONU还用于在收到升级命令后，将其中的版本信息与本地保存的该软件 的版本信息进行比较， 如判断出需要进行该软件的更新， 则还可用于向 OLT 回复升级响应； 还可用于在收到完整性检查命令后， 根据首个分包的包头信 息判断是否已成功接收所有分包， 如是， 则用于执行后续软件升级流程； 否 则，用于向 OLT请求下载未成功接收的分包，并在已成功接收到所有分包后， 执行后续软件升级流程；
OLT还可用于在下发完所有分包后， 通过单播 LLID的方式向回复升级 响应的 ONU发起完整性检查命令。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各组成元件可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性
本发明通过引入类可控组播方式的协议流程来进行软件的正常升级， 避 免了 OAM通道传输大量的重复数据的问题， 提高了网管效率和便利了用户 操作。

Claims

权 利 要 求 书
1、 一种以太网无源光网络中光节点的软件升级方法， 其包括： 网管系统从光缆终端设备（ OLT )中获取所述 OLT下各线卡连接的光节 点 ( ONU ) 的信息， 且提供界面供用户从中选择需要进行软件升级的 ONU 给所述 OLT;
所述 OLT按照所述 ONU的标识以单播逻辑链路标识（ LLID )的方式向 对应 ONU发送升级命令；在对根据所述存储地址信息下载的所述软件进行分 包处理后， 以广播 LLID的方式下发各分包； 收到所述升级命令的 ONU接收 完所有分包后， 执行软件升级流程。
2、 如权利要求 1所述的方法， 其中，
所述网管系统从所述 OLT中获取的 ONU的信息包括： ONU的类型及编 号信息。
3、 如权利要求 1所述的方法， 其中，
对所述软件进行分包处理是指： 将所述软件划分为多个数据包且为首个 数据包加上包头， 其中， 每一数据包的大小不超过当前网络中数据帧的最大 承载量要求。
4、 如权利要求 1所述的方法， 所述方法还包括：
未收到所述升级命令的 ONU在收到所述分包后 ,对所述分包进行丟弃处 理。
5、如权利要求 1所述的方法， 所述升级命令中携带有所述软件的版本信 息， 所述方法还包括：
ONU收到所述升级命令后，将其中的版本信息与本地保存的该软件的版 本信息进行比较， 如判断出需要进行该软件的更新， 则向所述 OLT回复升级 响应；
所述 OLT在下发完所有分包后， 通过单播 LLID的方式向回复所述升级 响应的 ONU发起完整性检查命令。
6、 如权利要求 5所述的方法， 收到所述升级命令的 ONU接收完所有分 包后， 执行软件升级流程的步骤包括：
ONU在收到所述完整性检查命令后，根据首个分包的包头信息判断是否 已成功接收所有分包， 如是， 则执行软件升级流程； 否则， 向所述 OLT请求 下载未成功接收的分包， 并在已成功接收到所有分包后， 执行软件升级流程。
7、 如权利要求 1或 6所述的方法， 其中，
所述 ONU执行软件升级流程的步骤包括： 所述 ONU将各分包写入存储 设备， 写入成功后向 OLT发送软件升级通知， 激活新版本。
8、一种以太网无源光网络中光节点的软件升级系统，其包括： 网管系统、 光缆终端设备 ( OLT )及所述 OLT下各线卡连接的光节点 （ ONU ) ；
所述网管系统设置为：从所述 OLT中获取所述 OLT下各线卡连接的 ONU 的信息；还用于提供界面供用户从中选择需要进行软件升级的 ONU及相关软 件， 并将用户选取的各 ONU 的标识及所述软件的存储地址信息发送给所述 OLT;
所述 OLT设置为： 按照所述 ONU的标识以单播逻辑链路标识（ LLID ) 的方式向对应 ONU发送升级命令；以及在对根据所述存储地址信息下载的所 述软件进行分包处理后， 以广播 LLID的方式下发各分包；
所述 ONU设置为： 在收到所述升级命令后，接收所述分包， 并在接收完 所有分包后， 执行软件升级流程。
9、 如权利要求 8所述的系统， 其中，
所述 OLT是设置为以如下方式对所述软件进行分包处理： 将所述软件划 分为多个数据包且为首个数据包加上包头， 其中， 每一数据包的大小不超过 当前网络中数据帧的最大承载量要求。
10、 如权利要求 8或 9所述的系统， 其中，
所述升级命令中携带有所述软件的版本信息；
所述 ONU还设置为：在收到所述升级命令后，将其中的版本信息与本地 保存的该软件的版本信息进行比较， 如判断出需要进行该软件的更新， 则向 所述 OLT回复升级响应； 所述 ONU是设置为以如下方式在接收完所有分包后， 执行软件升级流 程： 在收到完整性检查命令后， 根据首个分包的包头信息判断是否已成功接 收所有分包， 如是， 则执行软件升级流程； 如不是， 则向所述 OLT请求下载 未成功接收的分包， 并在已成功接收到所有分包后， 执行软件升级流程； 所述 OLT还设置为： 在下发完所有分包后， 通过单播 LLID的方式向回 复所述升级响应的 ONU发起所述完整性检查命令。
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