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WO2016101525A1 - Procédé, appareil et système de gestion de dispositif dpu d'unité de réseau optique - Google Patents

Procédé, appareil et système de gestion de dispositif dpu d'unité de réseau optique Download PDF

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Publication number
WO2016101525A1
WO2016101525A1 PCT/CN2015/079516 CN2015079516W WO2016101525A1 WO 2016101525 A1 WO2016101525 A1 WO 2016101525A1 CN 2015079516 W CN2015079516 W CN 2015079516W WO 2016101525 A1 WO2016101525 A1 WO 2016101525A1
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Prior art keywords
dpu
channel
management
optical network
olt
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English (en)
Chinese (zh)
Inventor
吕朋伟
袁立权
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ZTE Corp
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ZTE Corp
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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
    • H04L41/34—Signalling channels for network management communication

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device, and system for managing an optical network unit DPU device.
  • a device of a distribution point unit refers to a device that is placed at a node of a distribution point (DP).
  • the network side is a Passive Optical Network (xPON)/Ethernet uplink port
  • the user side is a VDSL2/G.FAST Digital Subscriber Line (DSL) interface.
  • the DPU device management model adopts the network configuration NETCONF protocol, which generally carries the IP protocol.
  • the uplink device is an OLT
  • the Permanent Management Agen (PMA) can be placed on the OLT device, even the OLT and the Optical Network Unit (Optical Network Unit). It is referred to as ONU. It is an adjacent device.
  • IP bearer is still used, IP addresses need to be configured on both the OLT and the DPU. This involves IP address allocation and management issues, which brings complexity in network management and increases DPU. The complexity of the device.
  • the current management mode is the management method of the IP address.
  • Figure 1 is a schematic diagram of the manner in which the IP address is used to manage the DPU device in the related art. As shown in Figure 1, the customer premises equipment (Customer Premise Equipment, CPE for short) is used. The disadvantage of this method is that each DPU needs to be assigned an IP address, IP address allocation, identification and management is very complicated, and the opening and maintenance workload is huge.
  • CPE Customer Premise Equipment
  • FIG. 2 is a schematic diagram of an OMCI management channel between an OLT and an ONU in the related art
  • FIG. 3 is a schematic diagram of a NETCONF over OMCI management mode in the related art, as shown in FIG. 2 and FIG. 3.
  • the implementation scheme based on this channel is NETCONF over OMCI.
  • This function uses the underlying PON mechanism. It can implement OLT and ONU configuration management and ONU alarm notification without configuring an IP address.
  • the maximum byte size of each OMCI message is less than 53. Bytes, if NETCONF messages are carried by OMCI, then NETCONF message fragmentation and reassembly are involved, and the scalability is very poor.
  • the invention provides a method, device and system for managing an optical network unit DPU device to solve at least the above problems.
  • a method for managing an optical network unit DPU device includes: establishing a specific service bearer channel between an optical line terminal OLT and an optical network unit DPU; and receiving, by the persistent manager proxy PMA of the OLT, Configuring a NETCONF configuration packet of the server, and sending the management packet of the management object to the DPU through the specific service bearer channel, where the DPU parses the management packet of the management packet of the NETCONF, and configures the Related parameters of the DPU.
  • the specific service bearer channel includes one of the following: a GPON encapsulation mode GEM channel of a Gigabit passive optical network GPON, a logical link mark LLID channel of an EPON of an Ethernet passive optical network, and a virtual local area network VLAN of an Ethernet aisle.
  • the NET-CONF packet is carried on the GEM frame.
  • the addressing manner of establishing a specific service bearer channel between the optical line terminal OLT and the optical network unit DPU includes one of the following: in the VLAN ID and The DPU is a one-to-one correspondence, and one of the VLANs has multiple DPU devices, which are identified and distinguished according to the MAC address of the DPU device.
  • the source MAC address of the packet is the device.
  • the MAC address and the destination MAC address are transmitted by using the broadcast address when the peer MAC address is not known.
  • the peer MAC address is filled.
  • the permanent manager proxy PMA of the OLT receives the NETCONF configuration packet from the configuration server, and the PMA uses an IP address to connect with the network management server, and the upper layer protocol of the connection is received by the northbound interface. Including: network configuration protocol NET-CONF, simple network management protocol SNMP, human-machine exchange protocol TL1.
  • an optical network unit DPU device management apparatus including: an establishing device, configured to establish a specific service bearer channel between an optical line terminal OLT and an optical network unit DPU;
  • the device is configured to receive the NET-CONF configuration message from the configuration server, and the management object of the management object is sent to the DPU through the specific service bearer channel, where
  • the DPU performs the analysis of the management data of the NET-CONF by the DPU, and configures related parameters of the DPU;
  • the transmission device is configured to be the OLT and the OLT adjacent device optical network unit ONU through the specific service.
  • the bearer channel passes the NET-CONF message.
  • the establishing device comprises: a first channel unit, a GPON encapsulation mode GEM channel of a Gigabit passive optical network GPON; a second channel unit, an Ethernet link passive optical network EPON logical link label LLID channel; a third channel Unit, Ethernet virtual LAN VLAN channel.
  • the first channel unit is configured to be in a GPON encapsulation mode GEM channel in which the specific service bearer channel is a Gigabit passive optical network GPON, and the NET-CONF packet is carried on the GEM frame.
  • the addressing manner of establishing a specific service bearer channel between the optical line terminal OLT and the optical network unit DPU includes the following One of the following: in the case that the VLAN ID and the DPU are in one-to-one correspondence, and one of the VLANs has multiple DPU devices, and is identified and distinguished according to the MAC address of the DPU device; The source MAC address of the packet is the MAC address of the device. The destination MAC address is sent by the broadcast address when the peer MAC address is not known. If the MAC address of the peer is obtained, the peer MAC address is filled.
  • VLAN virtual local area network
  • the device further includes: an interface device, configured to connect to the network management server by using an IP address, where the upper layer protocol of the connection includes: network configuration protocol NET-CONF, simple network management Protocol SNMP, Human Machine Exchange Protocol TL1.
  • the upper layer protocol of the connection includes: network configuration protocol NET-CONF, simple network management Protocol SNMP, Human Machine Exchange Protocol TL1.
  • an optical network unit DPU device management system comprising: the device according to any one of the preceding claims.
  • a specific service bearer channel is established between the optical line terminal OLT and the optical network unit DPU; the permanent manager proxy PMA of the OLT receives the NETCONF configuration message from the configuration server, and the management object of the management object passes the specific The service bearer channel is sent to the DPU, where the DPU parses the management data of the NETCONF, and configures the relevant parameters of the DPU; and terminates the specific service bearer by using the OLT and the OLT adjacent device optical network unit ONU.
  • the OLT and the ONU respectively extract the NET-CONF message to the device management CPU, and the OLT and the ONU establish a transparent channel for carrying the NET-CONF protocol, which solves the high complexity of the optical network unit DPU device management.
  • the problem of poor scalability reduces management complexity, increases scalability, and reduces maintenance costs.
  • FIG. 1 is a schematic diagram of a manner of managing a DPU device by using an IP address in the related art
  • FIG. 2 is a schematic diagram of an OMCI management channel between an OLT and an ONU in the related art
  • FIG. 3 is a schematic diagram of a NETCONF over OMCI management method in the related art
  • FIG. 4 is a flowchart of a method for managing an optical network unit DPU device according to an embodiment of the present invention
  • FIG. 5 is a structural block diagram of an optical network unit DPU device management apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a NETCONF over GEM/LLID/VLAN management manner in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for managing an optical network unit DPU device according to an embodiment of the present invention. As shown in FIG. 4, the process includes the following steps. :
  • Step S402 establishing a specific service bearer channel between the optical line terminal OLT and the optical network unit DPU;
  • Step S404 the permanent manager proxy PMA of the OLT receives the NETCONF configuration packet from the configuration server, and sends the management object of the management object to the DPU through the specific service bearer channel, where the DPU uses the management packet. Perform NETCONF management data analysis and configure related parameters of the DPU;
  • step S406 the OLT and the OLT adjacent device optical network unit ONU carry the NET-CONF message through the specific service bearer channel.
  • a specific channel is created between the OLT and the ONU.
  • the OLT and the ONU are used to terminate the channel and the protocol packets are extracted to the device management CPU, so that the OLT and the ONU can establish a clear channel for carrying.
  • NET-CONF protocol, NET-CONF protocol does not perceive the difference of the underlying channel, Therefore, the problem that the optical network unit DPU device has high management complexity and poor scalability is reduced, the management complexity is reduced, the scalability is improved, and the maintenance cost is reduced.
  • the specific service bearer channel may be in any one of the following, wherein the specific service bearer channel may include one of the following: GPON encapsulation mode GEM channel of Gigabit passive optical network GPON, Ethernet passive optical The logical link of the network EPON marks the LLID channel, and the virtual LAN VLAN channel of the Ethernet.
  • the NET-CONF packet is carried on the GEM frame, and the GEM frame length is greater than the NET-CONF.
  • the length of the packet so that the GEM frame length is sufficient to support a NET-CONF message, does not require fragmentation, reassembly, etc., and is transparent to NET-CONF.
  • the NET-CONF protocol does not perceive the difference of the underlying channel.
  • the addressing mode of establishing a specific service bearer channel between the optical line terminal OLT and the optical network unit DPU may include one of the following:
  • the MAC address of the DPU device is identified and distinguished
  • the source MAC address of the packet is the MAC address of the device.
  • the destination MAC address is sent by the broadcast address when the peer MAC address is unknown. If the MAC address of the peer is obtained, the peer MAC address is filled. address.
  • the permanent manager proxy PMA of the OLT receives the NETCONF configuration packet from the configuration server before:
  • the PMA uses an IP address to connect to the network management server.
  • the upper layer protocol of the connection includes: network configuration protocol NET-CONF, simple network management protocol SNMP, and human-machine exchange protocol TL1.
  • an optical network unit DPU device management apparatus is further provided, which is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "device” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 5 is a structural block diagram of an optical network unit DPU device management apparatus according to an embodiment of the present invention. As shown in FIG. 5, the apparatus includes:
  • Establishing a device 52 which is configured to establish a specific service bearer channel between the optical line terminal OLT and the optical network unit DPU;
  • the configuration device 54 is configured to receive the NET-CONF configuration message from the configuration server, and send the management object of the management object to the DPU through the specific service bearer channel, where the DPU is configured. Performing analysis of the management data of the NET-CONF by the management packet, and configuring related parameters of the DPU;
  • the transmission device 56 is configured to transmit the NET-CONF message through the specific service bearer channel by the OLT and the OLT adjacent device optical network unit ONU.
  • a specific channel is created between the OLT and the ONU, and the channel is terminated by the OLT and the ONU side, and the protocol packets are respectively extracted to the device management CPU, so that the OLT and the ONU side can establish a clear channel for carrying.
  • NET-CONF protocol, NET-CONF protocol can not detect the difference of the underlying channel, thus solving the problem of high complexity and poor scalability of optical network unit DPU equipment, reducing management complexity, improving scalability, and reducing maintenance. cost.
  • the establishing device 52 includes:
  • the first channel unit GPON encapsulation mode GEM channel of Gigabit passive optical network GPON;
  • the second channel unit the logical link of the Ethernet passive optical network EPON marks the LLID channel
  • the third channel unit the virtual LAN VLAN channel of the Ethernet.
  • the first channel unit is configured to be a GPON encapsulation mode GEM channel of the GPON of the GPON, and the NET-CONF packet is carried on the GEM frame, and the GEM frame length is greater than the NET. -CONF message length.
  • the addressing mode of establishing the specific service bearer channel between the optical line terminal OLT and the optical network unit DPU includes one of the following:
  • the DPU device identifies and distinguishes according to the MAC address of the DPU device.
  • the source MAC address of the packet is the device.
  • the MAC address and the destination MAC address are transmitted by using the broadcast address when the peer MAC address is not known.
  • the peer MAC address is filled.
  • the device further includes: an interface device, configured to connect to the network management server by using an IP address, where the upper layer protocol includes: network configuration protocol NET-CONF, simple network management Protocol SNMP, Human Machine Exchange Protocol TL1.
  • the upper layer protocol includes: network configuration protocol NET-CONF, simple network management Protocol SNMP, Human Machine Exchange Protocol TL1.
  • optical network unit DPU device management system comprising the apparatus of any of the embodiments, for implementing the method of the above embodiment.
  • the preferred embodiment discloses a management method for managing a DPU device by a PMA on the OLT.
  • VLAN Virtual Local Area Network
  • the PMA of the OLT receives the NETCONF configuration packet from the configuration server, and sends the packet to the DPU according to the management object through a specific service bearer channel between the OLT and the DPU;
  • the DPU parses the management packet sent by the specific service bearer channel between the OLT and the DPU to directly parse the management data of the NETCONF, and configure related parameters of the DPU;
  • the channel is terminated, and the packets are respectively extracted to the device management CPU; thus, the OLT and the ONU side can establish a clear channel for carrying the NET-CONF protocol.
  • the PMA uses an IP address to connect to the network management server.
  • the upper layer protocol may be a network configuration NETCONF protocol, or SNMP, a human machine exchange protocol TL1 (Transaction Language-1), and the like.
  • the channel and the DPU are in one-to-one correspondence.
  • GEM G-PON Encapsulation Mode
  • LLID Logical Link Identifier
  • the implementation scheme is similar to the GEM/LLID. If there is more than one DPU device in a VLAN, the MAC address of the DPU device needs to be identified and distinguished.
  • the source MAC address of the packet is the MAC address of the device and the destination MAC address. If the peer MAC address is unknown, the broadcast MAC address can be used. When the MAC address of the peer is obtained, the peer MAC address can be filled.
  • FIG. 6 is a schematic diagram of a NETCONF over GEM/LLID/VLAN management manner according to a preferred embodiment of the present invention
  • the GEM channel is used as a transparent channel between the OLT and the ONU, and the NETCONF packet is directly carried on the GEM frame.
  • the specific method is as follows:
  • S1 setting a specific service bearer channel between the OLT and the DPU, such as a GPON GEM channel, an EPON LLID, or a specific VLAN of the Ethernet;
  • the PMA of the OLT receives the NETCONF configuration packet from the configuration server, and sends the packet to the DPU through a specific service bearer channel between the OLT and the DPU according to the managed object.
  • the DPU parses the management packet sent by the specific service bearer channel between the OLT and the DPU to directly parse the management data of the NETCONF, and configure related parameters of the DPU.
  • the PMA uses an IP address to connect with the NETCONF configuration service
  • mapping between the MAC address and the DPU needs to be configured on the OLT to facilitate addressing.
  • GPON refers to GPON and its subsequent GPON/XGPON1/NGPON2 equivalent to a series of standards.
  • EPON refers to EPON together with the subsequent 10G EPON equivalent to a series of standards.
  • a specific service bearer channel is established between the optical line terminal OLT and the optical network unit DPU; the permanent manager proxy PMA of the OLT receives the NETCONF configuration packet from the configuration server, and is managed.
  • the management packet of the object is sent to the DPU through the specific service bearer channel.
  • the DPU analyzes the management data of the NETCONF by the DPU, and configures related parameters of the DPU, thereby solving the DPU device management complexity of the optical network unit. High, poor scalability, reduced management complexity, increased scalability, and reduced maintenance costs.

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Abstract

L'invention concerne un procédé, un appareil et un système de gestion de dispositif DPU d'unité de réseau optique. Le procédé consiste à : établir un canal de porteuse de service spécifique entre un terminal de ligne optique (OLT) et une DPU d'unité de réseau optique ; recevoir, par un agent de gestion permanent (PMA) de l'OLT, un paquet de configuration NETCONF d'un serveur de configuration, et envoyer un paquet de gestion d'un objet géré à la DPU par l'intermédiaire du canal de porteuse de service spécifique ; terminer le canal de porteuse de service spécifique au moyen de l'OLT et d'une unité de réseau optique (ONU) qui est un dispositif adjacent de l'OLT, extraire, par l'OLT et l'ONU, le paquet NET-CONF dans une CPU de gestion de dispositif, et établir, par l'OLT et l'ONU, un canal transparent permettant de véhiculer le protocole NET-CONF. L'invention permet par conséquent de résoudre les problèmes de haute complexité de gestion et de médiocre extensibilité du dispositif DPU d'unité de réseau optique, de réduire la complexité de gestion, d'améliorer l'extensibilité et de réduire le coût de maintenance.
PCT/CN2015/079516 2014-12-23 2015-05-21 Procédé, appareil et système de gestion de dispositif dpu d'unité de réseau optique Ceased WO2016101525A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112887850A (zh) * 2021-01-12 2021-06-01 中国联合网络通信集团有限公司 光端机处理方法、装置、设备及存储介质
CN113938771A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 一种无源光网络的业务发放方法
CN115086809A (zh) * 2022-06-29 2022-09-20 无锡路通视信网络股份有限公司 穿透pon链路的hinoc系统集中管理方法及其系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110073672B (zh) * 2016-12-30 2021-10-15 华为技术有限公司 一种管理光网络单元onu的方法、装置及系统
CN111193969B (zh) * 2018-11-14 2023-04-28 中兴通讯股份有限公司 一种基于dpu的数据通信与通信管理方法及dpu
CN113141390B (zh) * 2021-03-11 2022-05-27 新华三技术有限公司合肥分公司 Netconf通道管理方法及装置
CN117376061B (zh) * 2023-10-31 2024-08-06 中科驭数（北京）科技有限公司 服务访问方法、装置、电子设备及存储介质

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148698A (zh) * 2010-12-29 2011-08-10 华为技术有限公司 基于网络配置协议的网络配置管理方法、设备和系统
CN103686466A (zh) * 2012-09-12 2014-03-26 华为技术有限公司 为光网络中的设备生成转发表项的方法和装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014139094A1 (fr) * 2013-03-12 2014-09-18 华为技术有限公司 Procédé, dispositif et système de communication
CN104104523A (zh) * 2013-04-07 2014-10-15 中兴通讯股份有限公司 光纤和铜缆间的组播业务传递方法、装置及系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148698A (zh) * 2010-12-29 2011-08-10 华为技术有限公司 基于网络配置协议的网络配置管理方法、设备和系统
CN103686466A (zh) * 2012-09-12 2014-03-26 华为技术有限公司 为光网络中的设备生成转发表项的方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CROOT, CHRIS.: "Management Architecture and Requirements for FTTdp", BROADBAND FORUM, 27 June 2014 (2014-06-27), pages 6 - 10 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113938771A (zh) * 2020-06-29 2022-01-14 华为技术有限公司 一种无源光网络的业务发放方法
CN113938771B (zh) * 2020-06-29 2023-03-31 华为技术有限公司 一种无源光网络的业务发放方法
CN112887850A (zh) * 2021-01-12 2021-06-01 中国联合网络通信集团有限公司 光端机处理方法、装置、设备及存储介质
CN112887850B (zh) * 2021-01-12 2023-06-27 中国联合网络通信集团有限公司 光端机处理方法、装置、设备及存储介质
CN115086809A (zh) * 2022-06-29 2022-09-20 无锡路通视信网络股份有限公司 穿透pon链路的hinoc系统集中管理方法及其系统

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