WO2008122173A1 - Procédé de commande de multidiffusion dans un réseau optique passif ethernet - Google Patents

Procédé de commande de multidiffusion dans un réseau optique passif ethernet Download PDF

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Publication number
WO2008122173A1
WO2008122173A1 PCT/CN2007/003745 CN2007003745W WO2008122173A1 WO 2008122173 A1 WO2008122173 A1 WO 2008122173A1 CN 2007003745 W CN2007003745 W CN 2007003745W WO 2008122173 A1 WO2008122173 A1 WO 2008122173A1
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Prior art keywords
multicast
user
identifier
user equipment
port
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PCT/CN2007/003745
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English (en)
French (fr)
Inventor
Tao Zeng
Yunpeng Xie
Deqiang Wang
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Zte Corporation
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38783135&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2008122173(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to EP07855755.0A priority Critical patent/EP2139157B1/en
Priority to US12/593,975 priority patent/US8509115B2/en
Publication of WO2008122173A1 publication Critical patent/WO2008122173A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2878—Access multiplexer, e.g. DSLAM
    • H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
    • H04L12/2885—Arrangements interfacing with optical systems

Definitions

  • the present invention relates to a communication multicast technology, and more particularly to a multicast control method in an Ethernet Passive Optical Network (EPON). Background technique
  • EPON is a point-to-multipoint network structure, passive optical fiber transmission, high-speed Ethernet platform and Time Division Multiplexer (MAC) Media Access Control (MAC), providing a variety of integrated services. Broadband access network.
  • the EPON consists of three parts: the central end device (OLT), the optical line terminal (OLT), the optical network unit (O U), and the optical distribution network (ODN).
  • the existing EPON multicast control method adopts a single-copy broadcast mode, and the multicast service distribution control point is set on the ONU device.
  • the multicast permission table is set on the OLT to control the multicast, and the group in the OU device is set. Filter the filter entries to achieve the purpose of filtering illegal multicast data.
  • IGMP Internet Group Management Protocol
  • the OLT in the prior art can only identify the identifier of the ONU.
  • the multicast rights table stored on the existing OLT can only distinguish different ONUs, but different users on the ONU. Ports cannot be distinguished.
  • the Layer 2 switch learns to establish the translation table through the existing snooping mechanism, and records the user port in the conversion table.
  • the ONU forwards the IGMP join multicast message including the ONU identifier and the multicast address to the OLT, and the OLT queries the multicast rights table stored by the OLT, and if it finds that the ONU has the multicast right, Return to Ou Run Management and Maintenance ( OAM ) a frame, the frame includes the virtual local area network identifier (VLAN ID) of the multicast and the IP address of the multicast; after receiving the OAM frame, the ONU adds the multicast VLAN ID and IP address to the multicast filtering table.
  • VLAN ID virtual local area network identifier
  • the ONU After receiving the multicast multicast data, the ONU forwards the multicast data to the user port 1 in the translation table established by the snooping mechanism. After the IGMP of the ONU receives the IGMP join message from the multicast address 224.1.1.1, the ONU also uses the snooping mechanism ⁇ user port 2 to record the translation table. Thus, the user port 2 can also be used. Received multicast data with the multicast address 224.1.1.1.
  • the existing multicast control method can only perform multicast control on the ONU, and cannot perform multicast control on different user ports on the same ONU. As a result, users without multicast rights may also receive multicast data.
  • Existing multicast control methods cannot implement accurate multicast control, and there are technical security vulnerabilities. Summary of the invention
  • the main purpose of the present invention is to provide a multicast control method in an EPON, which can perform multicast control on different user ports on the same user equipment, thereby improving the accuracy and security of the multicast control.
  • the present invention provides a multicast control method in an Ethernet passive optical network, which includes the following steps:
  • the broadcast filter and user filter table forward multicast data filtering to users with multicast rights.
  • the step B specifically includes:
  • the user equipment receives the request packet carrying the multicast identifier on the user port, adds the user equipment identifier and the identifier of the user port to the request packet, and sends the request packet to the central office device.
  • the B2 the central office device receives the request packet, and queries the multicast permission table. When the request message is queried, the user marked by the user equipment identifier and the user port identifier have the requested multicast permission.
  • a multicast control frame carrying the multicast identifier and the user port identifier;
  • the user equipment After receiving the multicast control frame, the user equipment establishes and maintains a multicast filtering table that includes the multicast identifier according to the content of the multicast control frame, and establishes and maintains the multicast identifier and the corresponding user port.
  • the identified user filter table includes the multicast identifier according to the content of the multicast control frame, and establishes and maintains the multicast identifier and the corresponding user port.
  • the step B3 is: the user equipment obtains the multicast identifier and the user port identifier from the multicast control frame, and performs multicast filtering on the user equipment.
  • a multicast filtering entry including the multicast identifier is set in the table, and a user filtering entry including the multicast identifier and the user port identifier is established in the user filtering table.
  • the step B3 is: the user equipment obtains the multicast identifier and the user port identifier from the multicast control frame, and deletes the user filter table. Querying the corresponding entry of the user port; querying the user filter table, determining whether there is an entry corresponding to the multicast identifier, and if yes, performing step B4, otherwise, from the multicast filtering table Delete the entry corresponding to the multicast identifier, and go to step B4.
  • the multicast control frame specifically includes: frame type information used to distinguish whether to join the multicast request or leave the multicast request, the multicast virtual local area network VLAN identifier, the multicast IP address, and the identifier of the user port.
  • the multicast identifier in the multicast filter table is a multicast IP address.
  • the multicast identifier in the user filter table is a multicast VLAN identifier and a MAC address mapped by the multicast IP address.
  • the identifier configured for the user equipment is a logical link identifier; and the identifier configured for the user port is a user virtual local area network identifier.
  • Setting the multicast filtering table and the user filtering table on the user equipment are: setting the multicast filtering table in a passive optical network media access control part of the user equipment, and setting the user filtering table on the user end The second layer exchange part of the device.
  • Place The client device is an optical network unit, and the central office device is an optical line terminal.
  • the method of the present invention controls the user's multicast rights by marking the user with the user equipment identifier plus the user port identifier on the central office device; and, the first level multicast on the user equipment
  • the filtering improvement is two-stage filtering of multicast filtering and user filtering, so that multicast control can be performed based on different user ports of the same client device, thereby improving the accuracy and security of multicast control.
  • the invention is applicable to various types of customer premises equipment, and provides a more complete EPON controllable multicast solution, which expands the popularity of multicast services in EPON. Drawing fan
  • FIG. 1 is a flow chart of signaling interaction between an ONU and an OLT in the method according to the present invention
  • FIG. 2 is a schematic diagram of a forwarding function structure of an EPON ONU
  • FIG. 3 is a flowchart of a specific implementation of performing multicast control in an EPON according to the present invention
  • FIG. 4 is a schematic structural diagram of an extended OAM multicast control frame according to the present invention. Preferred embodiment of the invention
  • the core technical solution of the present invention is: configuring different identifiers for the user equipment and its user ports; marking the user with the user equipment identifier plus the user port identifier on the central office equipment, and setting the multicast permission table of the user;
  • the central office device controls the multicast permission of the user according to the multicast permission table, and sets a multicast filtering table and a user filtering table according to the control result on the user equipment, and the user equipment according to the multicast filtering table
  • the user filter table forwards multicast data filtering to users with multicast rights.
  • the user equipment is an ONU in an EPON
  • the central office equipment is an OLT in an EPON
  • the user port is a user network interface (UNI).
  • FIG. 1 is a flow chart of signaling interaction between O U and OLT in the method according to the present invention. See picture
  • the present invention is based on the idea of centralized control.
  • the ONU does not perform user permission judgment, but sends an IGMP request message, such as an IGMP join multicast request message and an IGMP leave multicast request message, to the
  • the OLT is controlled by the OLT device according to the multicast permission table.
  • the result is returned to the ONU through the extended OAM (Operation, Administration, Maintenance) multicast control frame.
  • the ONU generates the multicast filtering entry and user filtering only after receiving the OAM multicast control frame of the OLT. Entry.
  • a 0NU device Since one OMJ device may be connected to one passive optical network (P0N) of the OLT in the EPON, a 0NU device includes multiple UNI ports.
  • the present invention identifies the ONU in addition to the normal logical link identifier (LLID) of the EP0, and also identifies the user VLAN (CVLAN ID, Custom Virtul Local Area Network Identit). ) to identify multiple users under one ONU, namely the user port.
  • the CVLAN is the VLAN information contained in the user request packet. For the user request packet without the VLAN information, such as the untag packet, the CVLAN ID is equal to the port ID of the user port (PVID, Port Vlan Identity).
  • the OLT After receiving the IGMP request packet, the OLT marks the user according to the LLID and CVLAN carried in the request packet, and then searches the user multicast permission table to determine whether the user has multicast rights, and processes the result, for example, the access group. After the OAM multicast control frame is transmitted or denied, the OAM multicast control frame is sent to the corresponding ONU. After receiving the OAM multicast control frame, the ONU establishes the related control entries, that is, the multicast data filtering entry and the user filtering entry.
  • FIG. 2 shows the structure of the forwarding function of the EPON ONU.
  • the EPON ONU is usually composed of a passive optical network media access control (PON MAC) part and a Layer 2 switching (L2 Switch).
  • PON MAC passive optical network media access control
  • L2 Switch Layer 2 switching
  • the multicast data received by the ONU's network-to-network interface is tagged multicast VLAN data (mvlan tag) in the ONU.
  • the multicast data forwarded by the UNI side is multicast data without the tag ntag. How to add or subtract tags is not the focus of the present invention, so it will not be described here.
  • the present invention is directed to a controllable multicast service, in which both the PON MAC and the Layer 2 switching are controlled:
  • a multicast filtering table is set on the PON MAC, including a multicast IP address entry, mainly based on the group recorded therein.
  • the multicast IP address is used to filter the multicast data.
  • the PON MAC When the multicast data is received from the MN1, the PON MAC only forwards the multicast data corresponding to the multicast IP address recorded in the multicast filter table, and discards the multicast data.
  • the multicast data corresponding to the multicast IP address is not recorded in the multicast filtering table.
  • the user filtering table is set on the Layer 2 switching. It can also be called a Layer 2 multicast forwarding table.
  • VLAN ID VLAN ID
  • multicast MAC address VLAN ID
  • UNI identifier VLAN ID
  • the MAC address is obtained based on the multicast IP address mapping.
  • the Layer 2 switch receives the PON MAC filter and forwards the multicast data.
  • the multicast IP address of the multicast data The mapping is a MAC address, and the user filtering table is queried, and the multicast data is forwarded to the UNI corresponding to the multicast MAC address recorded in the user filtering table.
  • the user filtering table is empty, so in the initial state, the Layer 2 switching discards the unknown multicast data.
  • FIG. 3 is a flowchart of a specific implementation of performing multicast control in an EPON according to the present invention. Referring to Figure 3, the process includes:
  • Step 301 Configure different PVIDs for different U I ports of the ONU device.
  • Step 302 The ONU device receives, from the UNI interface, a multicast request packet carrying a multicast identifier, that is, an IGMP request packet, where the IGMP request packet is not tagged, and the IGMP request packet is added.
  • the UNI identifier is a CVLAN tag for the IGMP request.
  • the CVLAN tag is the PVID of the pre-configured UNI port.
  • the CVLAN tag is the CVLAN ID.
  • the ONU's own LLID is added to the 1 GMP request packet.
  • Step 303 The ONU sends an IGMP request message carrying its own LLID information and the CVLAN tag information to the OLT.
  • Steps 304 to 305 The OLT locates the IGMP request to the UNI port of the ONU according to the CVLAN tag information in the received IGMP request packet, and identifies the LLID of the ONU device, and queries the preset multicast permission table.
  • the extended OAM multicast control frame is returned to the corresponding OU; if not, the user marked by the CVLAN tag and the LLID does not have the The requested multicast permission refuses to accept the IGMP request.
  • FIG. 4 is a schematic structural diagram of a structure of an extended OAM multicast control frame according to the present invention.
  • the OAM multicast control frame includes: type information, which is 1 byte; a multicast VLAN ID, which is 2b te; a multicast group IP address, which is 4 bytes; and the CVLAN ID, which is 2 bytes.
  • the multicast group IP address is a multicast IP address.
  • the type information is used to identify whether the IGMP request message is a request to join a multicast or a request to leave a multicast.
  • Step 306 After receiving the OAM multicast control frame, the ONU establishes and maintains a multicast filtering table including the multicast IP address according to the content of the OAM multicast control frame, and establishes and maintains the multicast VLAN ID and the multicast MAC address. User filter table for the address and its corresponding UNI port identifier.
  • the step 306 specifically includes: determining the type information of the OAM multicast control, and if the type information indicates that the IGMP request message is a request to join the multicast, establishing a group including the multicast IP address in the PON MAC layer
  • the filtering entry is configured to map the multicast IP address to a MAC address, and the user filtering entry including the multicast VLAN ID plus the multicast MAC address and the UNI port identifier is established in the Layer 2 switching, and step 307 is performed.
  • the type information indicates that the IGMP request packet is a request to leave the multicast, and the entry corresponding to the UI port marked by the CVLAN ID in the OAM multicast control frame is deleted from the user filtering table of the Layer 2 switch.
  • step 307 it is determined whether there is an entry corresponding to the multicast identifier carried in the OAM multicast control frame in the user filtering table of the Layer 2 switch, and if yes, step 307 is performed, otherwise, the multicast is performed first.
  • the multicast IP address entry corresponding to the multicast identifier carried in the OAM multicast control frame is deleted in the filter table, and then step 307 is performed.
  • Step 307 Filter the multicast data according to the multicast filtering table and the user filtering table. Specifically, when the ONU receives the multicast data, the multicast filtering table is queried, and when the multicast IP address of the multicast data is recorded in the multicast filtering table, the multicast IP address is mapped to a MAC address. And querying the user filtering table, and forwarding the multicast data to the UM port corresponding to the multicast MAC address recorded in the user filtering table.
  • VID multicast VLAN ID
  • the ONU When the ONU receives an untagged IGMP request packet for multicast joining with a multicast IP address of 224.U.1 on port 1, adds a label of 100 (CVLAN tag) to the IGMP request message according to the PVID. As the CVLAN ID of the port 1, and add the LLID of the current ONU. Send to OLT for processing.
  • the OLT determines, according to the multicast permission table, whether the user port requesting the multicast has a limit, and returns an OAM multicast control frame.
  • the ONU After receiving the OAM multicast control frame returned by the OLT, the ONU establishes a multicast filter entry with the multicast IP address of 224.1.1.1 on the PON MAC, and establishes the following user filter entry on the Layer 2 switch.
  • the VID indicates the multicast VLAN ID.
  • the MAC value is obtained based on the multicast IP address mapping.
  • the port indicates the port number.
  • the ONU When receiving the multicast data with the multicast IP address of 224.1.1.1, the ONU first queries the multicast filtering table and allows the packets to pass. Then, the user filters the multicast filtering table and forwards the multicast data to port 1.
  • the ONU When the ONU receives an unlabeled IGMP request packet with the multicast IP address of 224 ⁇ 1.1 for requesting to join the multicast, it adds a CVLAN tag of 200 according to the PVID as the CVLAN ID of the port 2. And add the LLID of the current ONU and send it to the OLT for processing.
  • the OLT determines, according to the multicast permission table, whether the user port requesting the multicast has the right, and returns the OAM multicast control frame. After receiving the OAM multicast control frame returned by the OLT, the ONU establishes a multicast filtering entry with the multicast IP address of 224.1.1.1 on the PON MAC, and establishes the following user filtering entries on the Layer 2 switch:
  • the ONU When receiving the multicast data with the multicast IP address of 224.1.1.1, the ONU first queries the multicast filter table and allows the packets to pass. Then, the user filters the user filter table and forwards the multicast data to port 1 and port 2.
  • the port When the ONU receives an unlabeled IGMP request packet with the multicast IP address of 224.1.1.1 for requesting to leave the multicast, the port adds the CVLAN tag of 100 to the PVID as the CVLAN ID of the port 1. And adding the LLID of the current ONU, and sending it to the OLT for processing.
  • the OLT determines, according to the multicast permission table, whether the user port requesting the multicast has the right, and returns the OAM multicast control frame. After receiving the OAM multicast control frame returned by the OLT, the ONU first deletes the entry corresponding to the port 1 in the user filtering table of the Layer 2 switch, and then determines that the user filter table also has the record corresponding to the port 2, Delete the multicast address filtering entry.
  • the ONU When the ONU receives the multicast data with the multicast IP address of 224 ⁇ 1.1, the first query group The broadcast address filtering table is allowed to pass; then the user filtering table is queried, and only the multicast data is forwarded to port 2.
  • the ONU receives an unlabeled IGMP request packet with the multicast IP address of 224.1.1.1 for leaving the multicast on port 2, it adds a CVLAN tag of 100 according to the PVID as the CVLAN ID of the port 1, and The LLID of the current OU is added and sent to the OLT for processing.
  • the OLT determines whether the user port requesting the multicast has the right according to the multicast permission table, and returns an OAM multicast control frame.
  • the ONU After receiving the OAM multicast control frame returned by the OLT, the ONU deletes the entry corresponding to the port 1 in the user filtering table of the Layer 2 switch, and then determines that there is no entry corresponding to the other user port in the user filter table.
  • the multicast IP address in the broadcast address filtering table is 224.1.1.1.
  • the ONU When receiving the multicast data with the multicast IP address of 224.1.1.1, the ONU first queries the multicast address filtering table to discard the multicast data.
  • the present invention provides a multicast control method in an Ethernet passive optical network, which is modified by modifying the definition of the multicast rights, and the first-level multicast filtering on the user equipment is improved to two-stage filtering of multicast filtering and user filtering.
  • Multicast control can be performed based on different user ports of the same client device, which improves the accuracy and security of multicast control.
  • the invention is applicable to various types of customer premises equipment, and provides a more complete EPON controllable multicast solution, which expands the popularity of multicast services in EPON.

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Description

以太无源光网络中的组播控制方法
技术领域
本发明涉及通讯组播技术，尤其涉及在以太无源光网络（ EPON, Ethernet Passive Optical Network ) 中的组播控制方法。 背景技术
EPON是一种采用点到多点网络结构、 无源光纤传输方式、基于高速以 太网平台和时分（TDM, Time Division Multiplexer )媒体访问控制 （MAC, Media Access Control )方式、 提供多种综合业务的宽带接入网络。 EPON由 局端设备即光线路终端（OLT, Optical Line Terminal ) 、 用户端设备即光 网络单元（ O U， Optical Network Unit )和连接线路即光分配网络（ ODN, Optical Distribute Network )三部分组成。
近年来随着 EPON技术的大规模应用，在 EPON上如何开展可控组播业 务成为一个值得研究的课题。
现有的 EPON组播控制方法采用单拷贝广播方式，组播业务分发控制点 设置在 ONU设备上，在 OLT上设置组播权限表以对组播进行权限控制， 并 通过设置 O U设备中的组播过滤表项来达到过滤非法组播数据的目的。 对 于多用户端口的 O U设备， 通过互联网组管理协议 ( IGMP , Internet Group Management Protocol )学习 （ snooping )功能来实现组播业务仅向请求的用 户端口转发的目的。但是， 现有技术中的 OLT只能识别 ONU的标识， 对于 存在多个用户端口的 ONU, 现有 OLT上存储的组播权项表中只能区别不同 的 ONU, 而对 ONU上的不同用户端口不能区分。
例如， 当 ONU在用户端口 1上接收到组播地址为 224丄 1.1的 IGMP加 入组播报文后， 由二层交换通过现有的 snooping机制学习建立转换表， 在 转换表中记录该用户端口 1的信息； ONU将包括 ONU标识和所述组播地址 的 IGMP加入组播报文转发给 OLT， OLT查询自身存储的组播权项表， 如 果查到该 ONU具有所述组播的权限，则向 O U返回运行管理维护（ OAM ) 帧， 该 ΟΑΜ帧包括所述组播的虛拟局域网标识（ VLAN ID )和该组播的 IP 地址； ONU收到 OAM帧后将所述组播的 VLAN ID和 IP地址加入到组播 过滤表中。 当 ONU收到所述组播的组播数据后， 向所述 snooping机制建立 的转化表中的用户端口 1转发该组播数据。 当 ONU的用户端口 2上接收到 组播地址为 224.1.1.1的 IGMP加入组播 4艮文后， ONU同样利用 snooping机 制^用户端口 2记录到所述转换表中， 这样， 用户端口 2也可以收到组播地 址为 224.1.1.1的组播数据。
可见， 现有的组播控制方法只能针对 ONU进行组播控制， 无法针对同 一 ONU上的不同用户端口进行组播控制， 这样导致没有组播权限的用户也 可能收到组播数据。现有的组播控制方法不能实现精确的組播控制，存在技 术上的安全漏洞。 发明内容
有鉴于此， 本发明的主要目的在于提供一种 EPON中的组播控制方法， 可以针对同一用户端设备上的不同用户端口进行组播控制，提高组播控制的 精确性和安全性。
为了实现上述发明目的， 本发明的主要技术方案为：
本发明提供一种以太无源光网络中的组播控制方法， 包括如下步骤：
A、 为用户端设备及其用户端口配置不同的标识； 在局端设备上以用户 端设备标识加上用户端口标识对用户进行标记， 设置用户的组播权限表；
B、 在局端设备上根据所述组播权限表对用户的组播权限进行控制， 在 用户端设备上根据所述控制结果设置组播过滤表和用户过滤表，用户端设备 根据所述组播过滤表和用户过滤表将组播数据过滤转发到有组播权限的用 户。
其中， 所述步骤 B具体包括：
B1、用户端设备在用户端口收到携带组播标识的请求报文，为该请求报 文中添加用户端设备标识和所述用户端口的标识，发送该请求报文到局端设 备； B2、局端设备收到所述请求报文， 查询所述组播权限表， 当查询到所述 请求报文中用户端设备标识和用户端口标识所标记的用户具有所请求的组 播的权限时，向用户端设备返回携带所述组播标识和所述用户端口标识的组 播控制帧；
B3、用户端设备收到所述组播控制帧后，根据组播控制帧的内容建立维 护包括所述组播标识的组播过滤表，建立维护包括所述组播标识及其对应的 用户端口标识的用户过滤表；
B4、 当用户端设备收到组播数据时， 查询所述组播过滤表， 当所述组播 数据所属组播的标识记录在所述組播过滤表中时， 再查询所述用户过滤表， 向该用户过滤表中所记录的与所述组播的标识对应的用户端口转发所述组 播数据。
当所述请求报文为加入组播的请求报文时， 所述步骤 B3为： 用户端设 备从所述组播控制帧中获得组播标识和用户端口标识，在用户端设备的组播 过滤表中建立包括所述组播标识的组播过滤表项，在用户过滤表中建立包含 所述組播标识以及用户端口标识的用户过滤表项。
当所述请求报文为离开组播的请求报文时， 所述步驟 B3为： 用户端设 备从所述组播控制帧中获得组播标识和用户端口标识，从所述用户过滤表中 删除所述用户端口标识对应的表项； 查询所述用户过滤表， 判定其中是否有 所述組播标识所对应的表项， 如果有， 则执行步骤 B4, 否则， 从所述组播 过滤表中删除所述组播标识对应的表项， 执行步骤 B4。
上述方案中， 所述组播控制帧具体包括： 用于区别是加入组播请求或是 离开组播请求的帧类型信息、组播的虛拟局域网 VLAN标识、组播 IP地址、 用户端口的标识。 其中， 所述组播过滤表中的组播标识为组播 IP地址； 所 述用户过滤表中的组播标识为组播 VLAN标识以及由组播 IP地址映射的 MAC地址。
上述方案中，所述为用户端设备配置的标识为逻辑链路标识； 所述为用 户端口配置的标识为用户虚拟局域网标识。所述在用户端设备上设置组播过 滤表和用户过滤表为：将所述组播过滤表设置在用户端设备的无源光网络媒 体访问控制部分，将所述用户过滤表设置在用户端设备的二层交换部分。所 述用户端设备为光网络单元， 所述局端设备为光线路终端。
由于本发明所述的方法在局端设备上以用户端设备标识加上用户端口 标识对用户进行标记， 以此对用户的组播权限进行控制； 并且， 将用户端设 备上的一级组播过滤改进为组播过滤和用户过滤两级过滤，从而可以基于同 一用户端设备的不同用户端口进行组播控制，提高组播控制的精确性和安全 性。本发明适用于多种类型的用户端设备，提供了一个更为完整的 EPON可 控组播解决方案， 扩大了组播业务在 EPON中的普及。 附图概迷
图 1为本发明所述方法中 ONU与 OLT之间的信令交互流程图； 图 2为 EPON ONU的转发功能结构示意图；
图 3为本发明所述在 EPON中进行组播控制的具体实现流程图； 图 4为本发明所述扩展的 OAM组播控制帧的组成结构示意图。 本发明的较佳实施方式
下面通过具体实施例和附图对本发明做进一步详细说明。
本发明的核心技术方案为： 为用户端设备及其用户端口配置不同的标 识； 在局端设备上以用户端设备标识加上用户端口标识对用户进行标记，设 置用户的组播权限表；在局端设备上根据所述组播权限表对用户的组播权限 进行控制， 在用户端设备上根据所述控制结果设置组播过滤表和用户过滤 表，用户端设备根据所述组播过滤表和用户过滤表将组播数据过滤转发到有 组播权限的用户。
在下述实施例中， 所述用户端设备为 EPON中的 ONU， 所述局端设备 为 EPON中的 OLT, 所述用户端口为用户网络接口 （UNI ) 。
图 1为本发明所述方法中 O U与 OLT之间的信令交互流程图。参见图
1 ,在具体实现中，本发明基于集中控制的思想， ONU不进行用户权限判断， 而是将 IGMP请求报文，例如 IGMP加入组播请求报文和 IGMP离开組播请 求报文， 都发送到 OLT, 由 OLT设备按照所述组播权限表进行控制处理， 并将结果通过扩展的运行管理维护 （OAM, Operation, Administration, Maintenance )组播控制帧返回给 ONU, ONU只有在收到 OLT的 OAM组播 控制帧后， 才生成组播过滤表项和用户过滤表项。
由于 EPON中 OLT的一个无源光网络（P0N )口下可能连接多个 OMJ 设备， 而一个 0NU设备中又包含了多个 UNI口。 为了在 0LT设备上进行 用户识别， 本发明在除了利用 EP0N通常的逻辑链路标识（LLID, Logical Link Identity )来标识 ONU之外，还通过用户虚拟局域网标识（ CVLAN ID, Custom Virtul Local Area Network Identit )来标识一个 ONU下的多个用户， 即用户端口。 CVLAN是用户请求报文中包含的 VLAN信息， 对于不携带 VLAN信息的用户请求报文， 如 untag报文， CVLAN ID等于用户端口的端 口虚拟局域网标识（PVID, Port Vlan Identity) 。
当 OLT接收到 IGMP请求报文后， 根据该请求报文中携带的 LLID和 CVLAN标记用户，然后查找用户组播权限表，判断该用户是否有组播权限， 并将处理结果， 例如允许访问组播或拒绝访问组播， 通过 OAM组播控制帧 发送给对应的 ONU， ONU接收到 OAM组播控制帧后， 建立相关的控制表 项， 即组播数据过滤表项和用户过滤表项。
图 2为 EPON ONU的转发功能结构示意图。 参见图 2, EPON ONU通 常由无源光网络媒体访问控制 （PON MAC )部分和二层交换 ( L2 Switch ) 两部分组成。 由于 EPON涉及到虚拟局域网 （VLAN )技术， 因此 ONU的 网络至网络接口 （丽 I, Network-Network Interface )侧接收的组播数据为带 有标签的组播 VLAN数据 ( mvlan tag ) ,在 ONU的 UNI侧转发出去的组播 数据为不带标签 ntag ) 的组播数据， 至于如何加减标签（tag ) ， 不是本 发明的重点， 因此此处不再赘述。
本发明针对可控组播业务，所迷 PON MAC和二层交换两个部分都要进 行控制： 在 PON MAC上设置组播过滤表， 其中包括组播 IP地址表项， 主 要根据其中记录的组播 IP地址对组播数据进行过滤， 当从丽 I收到组播数 据时， 则 PON MAC只转发在该组播过滤表中记录的组播 IP地址对应的组 播数据，而丟弃在该组播过滤表中没有记录的组播 IP地址对应的组播数据； 在二层交换上设置用户过滤表，也可以称为二层组播转发表，其中设置组播 的 VLAN标识、组播的 MAC地址及 UNI标识，其中的 MAC地址是根据组 播的 IP地址映射得到， 二层交换接收 PON MAC过滤转发来组播数据， 将 该组播数据的組播 IP地址映射为 MAC地址，查询所述用户过滤表，向该用 户过滤表中所记录的所迷组播 MAC地址对应的 UNI转发所述组播数据。
在初始状态下，所述用户过滤表均为空， 因此在初始状态下二层交换对 未知组播数据进行丟弃处理。
图 3为本发明所述在 EPON中进行组播控制的具体实现流程图。参见图 3， 该流程包括：
步骤 301、 为 ONU设备的不同的 U I口配置不同的 PVID。
步骤 302、 ONU设备从 UNI口接收到携带组播标识的组播请求报文， 即 IGMP请求报文， 此处为不带标签的 IGMP ( untag lGMP )请求报文， 为 该 IGMP请求报文添加 UNI的标识， 即为该 IGMP请求拫文添加用户虚拟 局域网标识标签（CVLAN tag ) , 此处 CVLAN tag的值为预先配置的 UNI 口的 PVID, 所述 CVLAN tag就是上述的 CVLAN ID; 同时， 将 ONU自身 LLID添加到 1GMP请求报文。
步骤 303、 ONU将携带其自身 LLID信息以及所述 CVLAN tag信息的 IGMP请求报文发送给 OLT。
步骤 304~305、 OLT根据接收的 IGMP请求报文中的 CVLAN tag信息， 结合标识 ONU设备的 LLID,将 IGMP请求定位到 ONU的 UNI口，查询预 设的组播权限表，当查询到所述 CVLAN tag和 LLID所标记的用户具有所请 求的组播的权限时， 向对应的 O U返回扩展的 OAM组播控制帧； 如果没 有查询到，即所述 CVLAN tag和 LLID所标记的用户不具备所请求的组播权 限， 则拒绝接受所述 IGMP请求。
图 4为本发明所述扩展的 OAM组播控制帧的组成结构示意图。 参见图 4, 所述 OAM组播控制帧包括： 类型信息， 占 lbyte; 组播 VLAN ID, 占 2b te; 组播组 IP地址， 占 4byte; 以及所述 CVLAN ID, 占 2byte。 所述的 组播组 IP地址即组播 IP地址。 所述类型信息用于标识所述 IGMP请求报文 为加入組播的请求还是离开组播的请求。 步骤 306、 ONU接收到 OAM组播控制帧后， 根据 OAM组播控制帧的 内容建立维护包括所迷组播 IP地址的组播过滤表， 并建立维护包括所述组 播 VLAN ID、 组播 MAC地址及其对应的 UNI口标识的用户过滤表。
本步骤 306具体包括： 判断所述 OAM组播控制 的类型信息， 如果类 型信息表示所述 IGMP请求报文为加入組播的请求，则在 PON MAC层中建 立包括所述组播 IP地址的组播过滤表项， 将所述组播 IP地址映射为 MAC 地址，在二层交换中建立包含所述组播 VLAN ID加组播 MAC地址以及 UNI 口标识的用户过滤表项， 执行步骤 307; 如果所述类型信息表示所述 IGMP 请求报文为离开组播的请求， 则从二层交换的用户过滤表中删除所述 OAM 组播控制帧中所述 CVLAN ID所标记的 U I口对应的表项， 之后， 判断二 层交换的用户过滤表中是否还有所迷 OAM组播控制帧中携带的组播标识所 对应的表项， 如果有， 则执行步驟 307, 否则， 先从所述组播过滤表中删除 所述 OAM组播控制帧携带的组播标识所对应的组播 IP地址表项， 再执行 步骤 307。
步骤 307、 根据组播过滤表和用户过滤表过滤组播数据。 具体为： ONU 接收組播数据时， 查询所述组播过滤表， 当所述组播数据的组播 IP地址记 录在所述组播过滤表中时，并将組播 IP地址映射为 MAC地址，再查询所述 用户过滤表， 向该用户过滤表中所记录的与所述组播 MAC地址对应的 UM 口转发所述组播数据。
下面通过一个带有具体数值的例子进一步说明本发明所述的方法。
设组播的 VLAN标识（VID )为 2, 组播 IP地址为 224.1.1.1;
对于多 UNI口的 ONU设备，将每个用户端口配置不同的 PVID, 例如： 端口 1: PVID=100;
端口 2: PVID=200;
端口 3: PVID=300。
当 ONU在端口 1上接收到組播 IP地址为 224.U.1的未加标签的用于 加入组播的 IGMP请求报文， 根据 PVID为该 IGMP请求艮文添加 100的标 签（ CVLAN tag ) ,作为该端口 1的 CVLAN ID,并添加当前 ONU的 LLID, 发送到 OLT处理。 OLT根据所述组播权限表判断请求组播的用户端口是否 具有杈限， 有则返回 OAM组播控制帧。 ONU收到 OLT返回的 OAM组播 控制帧后， 在 PON MAC上建立组播 IP地址为 224.1.1.1的组播过滤表项， 在二层交换上建立下面的用户过滤表项， 也可以称为二层组播转发表项： VID=2, MAC=01:00:5e:01:01:01, port=L
其中 VID表示组播的 VLAN标识， MAC的值是根据组播 IP地址映射 得到的， port表示端口号。
此时 ONU接收到组播 IP地址为 224.1.1.1的组播数据时， 首先查询组 播过滤表， 允许通过； 然后查询用户过滤表， 只向端口 1转发组播数据。
当 ONU在端口 2上接收到组播 IP地址为 224丄 1.1的未加标签的用于 请求加入组播的 IGMP请求报文， 根据 PVID为其添加 200的 CVLAN tag, 作为该端口 2的 CVLAN ID， 并添加当前 ONU的 LLID,发送到 OLT处理。 OLT根据所述组播权限表判断请求组播的用户端口是否具有权限， 有则返 回 OAM组播控制帧。 ONU收到 OLT返回的 OAM組播控制帧后， 在 PON MAC上建立组播 IP地址为 224.1.1.1的组播过滤表项，在二层交换上建立下 面的用户过滤表项：
VID=25 MAC=01:00:5e:01:01:01, port=2。
此时 ONU接收到组播 IP地址为 224.1.1.1的组播数据时， 首先查询组 播过滤表， 允许通过； 然后查询用户过滤表， 同时向端口 1和端口 2转发组 播数据。
当 ONU在端口 1上接收到組播 IP地址为 224.1.1.1的未加标签的用于 请求离开组播的 IGMP请求报文， 根据 PVID为其添加 100的 CVLAN tag, 作为该端口 1的 CVLAN ID, 并添加当前 ONU的 LLID,发送到 OLT处理， OLT根据所述组播权限表判断请求组播的用户端口是否具有权限， 有则返 回 OAM组播控制帧。 ONU收到 OLT返回的 OAM组播控制帧后， 首先删 除所述二层交换的用户过滤表中关于端口 1对应的表项，然后判断出用户过 滤表中还有端口 2对应的记录， 则不删除该组播地址过滤表项。
此时 ONU接收到组播 IP地址为 224丄 1.1的组播数据时， 首先查询组 播地址过滤表，允许通过； 然后查询用户过滤表，只向端口 2转发组播数据。 当 ONU在端口 2上接收到組播 IP地址为 224.1.1.1的未加标签的用于 离开组播的 IGMP请求报文，根据 PVID为其添加 100的 CVLANtag, 作为 该端口 1的 CVLAN ID,并添加当前 O U的 LLID,发送到 OLT处理， OLT 根据所述组播权限表判断请求组播的用户端口是否具有权限， 有则返回 OAM组播控制帧。 ONU收到 OLT返回的 OAM組播控制帧后，首先删除二 层交换上用户过滤表中端口 1对应的表项，然后判断出用户过滤表中已经没 有其它用户端口对应的表项， 则删除组播地址过滤表中组播 IP地址为 224.1.1.1表项。
此时 ONU接收到组播 IP地址为 224.1.1.1的组播数据时， 首先查询组 播地址过滤表， 直接丟弃组播数据。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不 局限于此，任何熟悉该技术的人在本发明所揭露的技术范围内， 可轻易想到 的变化或替换， 都应涵盖在本发明的保护范围之内。 工业实用性
本发明提供的一种以太无源光网络中的组播控制方法，通过修改组播权 限定义进行控制以及将用户端设备上的一级组播过滤改进为组播过滤和用 户过滤两级过滤， 可以基于同一用户端设备的不同用户端口进行组播控制， 提高了组播控制的精确性和安全性。 本发明适用于多种类型的用户端设备， 提供了一个更为完整的 EPON可控组播解决方案，扩大了组播业务在 EPON 中的普及。

Claims

权 利 要 求 书
1、 一种以太无源光网络中的组播控制方法， 其特征在于， 包括如下步 骤：
A、 为用户端设备及其用户端口配置不同的标识； 在局端设备上以用户 端设备标识加上用户端口标识对用户进行标记， 设置用户的组播权限表；
B、 在局端设备上根据所述组播权限表对用户的组播权限进行控制， 在 用户端设备上根据所述控制结果设置组播过滤表和用户过滤表，用户端设备 才艮据所述组播过滤表和用户过滤表将组播数据过滤转发到有组播权限的用 户。
2、 根据权利要求 1 所迷的方法， 其特征在于， 所述步骤 B具体包括：
Bl、用户端设备在用户端口收到携带组播标识的请求报文，为该请求报 文中添加用户端设备标识和所述用户端口的标识，发送该请求报文到局端设 备；
B2、局端设备收到所述请求报文， 查询所述组播权限表， 当查询到所述 请求报文中用户端设备标识和用户端口标识所标记的用户具有所请求的组 播的权限时，向用户端设备返回携带所述组播标识和所述用户端口标识的组 播控制帧；
B3、用户端设备收到所述组播控制帧后，根据组播控制帧的内容建立维 护包括所述组播标识的组播过滤表，建立维护包括所述组播标识及其对应的 用户端口标识的用户过滤表；
B4、 当用户端设备收到组播数据时， 查询所述组播过滤表， 当所述组播 数据所属组播的标识记录在所述组播过滤表中时， 再查询所述用户过滤表， 向该用户过滤表中所记录的与所述组播的标识对应的用户端口转发所述组 播数据。
3、 根据权利要求 2所述的方法， 其特征在于， 当所述请求报文为加入 组播的请求 ^=艮文时 , 所述步骤 B3为：
用户端设备从所述组播控制帧中获得组播标识和用户端口标识，在用户 端设备的组播过滤表中建立包括所述组播标识的組播过滤表项，在用户过滤 表中建立包含所述组播标识以及用户端口标识的用户过滤表项。
4、 根据权利要求 2所述的方法， 其特征在于， 当所述请求报文为离开 组播的请求^ =艮文时， 所述步驟 B3为：
用户端设备从所述组播控制帧中获得组播标识和用户端口标识，从所述 用户过滤表中删除所述用户端口标识对应的表项；
查询所述用户过滤表， 判定其中是否有所述组播标识所对应的表项，如 果有， 则执行步骤 B4, 否则， 从所述组播过滤表中删除所述组播标识对应 的表项， 执行步骤 B4。
5、 根据权利要求 2所述的方法， 其特征在于， 所述组播控制帧具体包 括：
用于区别是加入组播请求或是离开组播请求的帧类型信息、组播的虚拟 局 i或网 VLAN标识、 组播 IP地址、 用户端口的标识。
6、 根据权利要求 5所述的方法， 其特征在于， 所述组播过滤表中的组 播标识为组播 IP地址； 所述用户过滤表中的組播标识为组播 VLAN标识以 及由组播 IP地址映射的 MAC地址。
7、 根据权利要求 1至 6任一项所述的方法， 其特征在于， 所述为用户 端设备配置的标识为逻辑链路标识；所述为用户端口配置的标识为用户虚拟 局域网标识、。
8、 根据权利要求 1至 6任一项所述的方法， 其特征在于， 所述在用户 端设备上设置组播过滤表和用户过滤表为：
将所述组播过滤表设置在用户端设备的无源光网络媒体访问控制部分， 将所述用户过滤表设置在用户端设备的二层交换部分。
9、 根据权利要求 1至 6任一项所述的方法， 其特征在于， 所述用户端 设备为光网络单元， 所述局端设备为光线路终端。
PCT/CN2007/003745 2007-04-05 2007-12-24 Procédé de commande de multidiffusion dans un réseau optique passif ethernet WO2008122173A1 (fr)

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Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1272943C (zh) * 2004-03-24 2006-08-30 华为技术有限公司 一种组播业务的实现方法
CN101051923A (zh) * 2007-04-05 2007-10-10 中兴通讯股份有限公司 以太无源光网络中的组播控制方法
CN101150425B (zh) * 2007-11-15 2010-10-13 中国电信股份有限公司 组播业务权限控制方法及以太网无源光网络系统
CN101771901B (zh) * 2008-12-31 2013-04-24 华为技术有限公司 一种无源光网络中组播权限控制的方法、系统及多住户单元
CN101557541B (zh) * 2009-05-26 2012-04-18 杭州华三通信技术有限公司 数据包传输的方法、系统及装置
CN101938696B (zh) * 2009-06-30 2014-02-05 上海贝尔股份有限公司 在无源光网络中控制移动组播广播业务转发的方法及装置
CN102098166A (zh) * 2009-12-14 2011-06-15 中兴通讯股份有限公司 一种吉比特无源光网络系统及其可控组播实现方法
CN101808256B (zh) * 2010-04-14 2012-09-26 烽火通信科技股份有限公司 具有组播认证和控制功能的无源光网络系统及其实现方法
CN102647336B (zh) * 2011-02-22 2016-09-07 瑞昱半导体股份有限公司 用于封包内容转换的方法以及网络装置
CN102510767B (zh) * 2011-11-09 2014-04-02 华为技术有限公司 一种无源光网络中实现互通组播的方法、系统与装置
CN102647286B (zh) * 2012-03-30 2015-01-07 上海斐讯数据通信技术有限公司 以太无源光网络系统
US9679132B2 (en) * 2012-04-16 2017-06-13 Hewlett Packard Enterprise Development Lp Filtering access to network content
KR20150022859A (ko) * 2012-05-28 2015-03-04 후아웨이 테크놀러지 컴퍼니 리미티드 광 네트워크 단말 관리 및 제어 인터페이스 메시지를 전송하는 방법 및 시스템, 및 대응하는 장치
CN102761542B (zh) * 2012-06-25 2015-04-15 杭州华三通信技术有限公司 一种防止组播数据攻击的方法和设备
CN102905201B (zh) * 2012-10-12 2015-08-19 中国联合网络通信集团有限公司 无源光网络的会话业务控制方法和光线路终端
US8931046B2 (en) * 2012-10-30 2015-01-06 Stateless Networks, Inc. System and method for securing virtualized networks
JP2016503975A (ja) * 2012-12-17 2016-02-08 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ マルチキャストトラフィックブリッジング
WO2014113924A1 (zh) * 2013-01-22 2014-07-31 华为技术有限公司 实现组播的方法、设备和系统
US9634940B2 (en) 2013-01-31 2017-04-25 Mellanox Technologies, Ltd. Adaptive routing using inter-switch notifications
US9548960B2 (en) * 2013-10-06 2017-01-17 Mellanox Technologies Ltd. Simplified packet routing
US10069802B2 (en) * 2014-02-18 2018-09-04 Ciena Corporation Method for securely configuring customer premise equipment
US9729473B2 (en) 2014-06-23 2017-08-08 Mellanox Technologies, Ltd. Network high availability using temporary re-routing
US9806994B2 (en) 2014-06-24 2017-10-31 Mellanox Technologies, Ltd. Routing via multiple paths with efficient traffic distribution
US9699067B2 (en) 2014-07-22 2017-07-04 Mellanox Technologies, Ltd. Dragonfly plus: communication over bipartite node groups connected by a mesh network
CN104378303B (zh) * 2014-11-21 2018-03-23 瑞斯康达科技发展股份有限公司 转发组播业务的方法和系统、onu和olt
US9894005B2 (en) 2015-03-31 2018-02-13 Mellanox Technologies, Ltd. Adaptive routing controlled by source node
CN106302188A (zh) * 2015-05-18 2017-01-04 中兴通讯股份有限公司 一种交换机设备的组播报文转发控制方法及装置
CN105119826B (zh) * 2015-07-08 2018-06-29 上海斐讯数据通信技术有限公司 一种基于转发和控制分离的组播组管理方法及系统
CN105100109B (zh) * 2015-08-19 2019-05-24 华为技术有限公司 一种部署安全访问控制策略的方法及装置
CN106487637B (zh) 2015-08-25 2020-04-03 腾讯科技（深圳）有限公司 一种应用消息的处理系统、方法及应用设备
US9973435B2 (en) 2015-12-16 2018-05-15 Mellanox Technologies Tlv Ltd. Loopback-free adaptive routing
CN105610590B (zh) * 2015-12-18 2018-12-11 新华三技术有限公司 一种组播报文传输方法和装置
US10819621B2 (en) 2016-02-23 2020-10-27 Mellanox Technologies Tlv Ltd. Unicast forwarding of adaptive-routing notifications
US10178029B2 (en) 2016-05-11 2019-01-08 Mellanox Technologies Tlv Ltd. Forwarding of adaptive routing notifications
US10200294B2 (en) 2016-12-22 2019-02-05 Mellanox Technologies Tlv Ltd. Adaptive routing based on flow-control credits
CN106713348B (zh) * 2017-01-17 2019-12-31 无锡雷华网络技术有限公司 Olt组播上行协议报文转发方法及系统
US10644995B2 (en) 2018-02-14 2020-05-05 Mellanox Technologies Tlv Ltd. Adaptive routing in a box
US11005724B1 (en) 2019-01-06 2021-05-11 Mellanox Technologies, Ltd. Network topology having minimal number of long connections among groups of network elements
US11575594B2 (en) 2020-09-10 2023-02-07 Mellanox Technologies, Ltd. Deadlock-free rerouting for resolving local link failures using detour paths
US11411911B2 (en) 2020-10-26 2022-08-09 Mellanox Technologies, Ltd. Routing across multiple subnetworks using address mapping
US11870682B2 (en) 2021-06-22 2024-01-09 Mellanox Technologies, Ltd. Deadlock-free local rerouting for handling multiple local link failures in hierarchical network topologies
US11765103B2 (en) 2021-12-01 2023-09-19 Mellanox Technologies, Ltd. Large-scale network with high port utilization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050135365A1 (en) * 2003-12-17 2005-06-23 Sung Jung S. Method for supporting multicast service in ethernet passive optical network system
CN1744570A (zh) 2005-08-25 2006-03-08 广东省电信有限公司研究院 在以太无源光网络系统中高效视频组播的实现方法
US20060176835A1 (en) 2005-02-07 2006-08-10 Samsung Electronics Co.; Ltd System and method for providing internet protocol based broadcast services
CN101051923A (zh) * 2007-04-05 2007-10-10 中兴通讯股份有限公司 以太无源光网络中的组播控制方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7697547B2 (en) * 2004-12-08 2010-04-13 Alcatel Lucent Internet protocol video delivery in passive optical networks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050135365A1 (en) * 2003-12-17 2005-06-23 Sung Jung S. Method for supporting multicast service in ethernet passive optical network system
US20060176835A1 (en) 2005-02-07 2006-08-10 Samsung Electronics Co.; Ltd System and method for providing internet protocol based broadcast services
CN1744570A (zh) 2005-08-25 2006-03-08 广东省电信有限公司研究院 在以太无源光网络系统中高效视频组播的实现方法
CN101051923A (zh) * 2007-04-05 2007-10-10 中兴通讯股份有限公司 以太无源光网络中的组播控制方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MIN ZHU ET AL.: "A Novel Implementation of VLAN-Based Multicast Carried on LLID in EPON", IEEE SERVICE CENTER, 1 October 2006 (2006-10-01), pages 1 - 4
See also references of EP2139157A4 *

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