[go: up one dir, main page]

WO2011144048A2 - Procédé de réalisation de multidiffusion et dispositif réseau - Google Patents

Procédé de réalisation de multidiffusion et dispositif réseau Download PDF

Info

Publication number
WO2011144048A2
WO2011144048A2 PCT/CN2011/074357 CN2011074357W WO2011144048A2 WO 2011144048 A2 WO2011144048 A2 WO 2011144048A2 CN 2011074357 W CN2011074357 W CN 2011074357W WO 2011144048 A2 WO2011144048 A2 WO 2011144048A2
Authority
WO
WIPO (PCT)
Prior art keywords
network device
multicast
information
terminal
igmp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/074357
Other languages
English (en)
Chinese (zh)
Other versions
WO2011144048A3 (fr
Inventor
牛承光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201180000523.0A priority Critical patent/CN102742221B/zh
Priority to PCT/CN2011/074357 priority patent/WO2011144048A2/fr
Publication of WO2011144048A2 publication Critical patent/WO2011144048A2/fr
Publication of WO2011144048A3 publication Critical patent/WO2011144048A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports

Definitions

  • the present invention relates to the field of network communications, and in particular, to a multicast implementation method and a network device. Background technique
  • IPTV Internet Protocol Television
  • IPTV Internet Protocol Television
  • the embodiments of the present invention provide a multicast implementation method and a network device to solve the problem that the IPTV service is interrupted due to a network device or link failure, and the user experience is poor.
  • an embodiment of the present invention provides a multicast implementation method, including:
  • the first network device receives the multicast group management protocol IGMP message from the terminal, where the IGMP message includes the multicast group information requested by the terminal;
  • the multicast backup information includes receiving the IGMP message.
  • the embodiment of the present invention provides a multicast network device, including: a first receiver, configured to receive a multicast group management protocol IGMP message from a terminal, where the IGMP message includes the multicast requested by the terminal Group information
  • An acquiring module configured to obtain multicast backup information, where the multicast backup information includes port information for receiving the IGMP message, information about the terminal, and the multicast group information;
  • the second network device sends the multicast backup information, so that the second network device forwards the multicast stream to the terminal according to the multicast backup information when the network device is faulty.
  • the embodiment of the present invention provides a second network device implemented by multicast, including: a second receiver, configured to receive multicast backup information from a first network device, where the multicast backup information includes the first network The device receives the port information of the multicast group management protocol IGMP message from the terminal, the information of the terminal, and the multicast group information;
  • An update module configured to update local IGMP group information according to the multicast group backup information
  • a second transmitter configured to forward the multicast stream to the terminal according to the local IGMP group information when the first network device is faulty.
  • the multicast group information of the terminal is backed up on the second network device.
  • the multicast network is forwarded by the second network device, and the IPTV service is not interrupted.
  • FIG. 1 is a schematic diagram of a network for deploying an IPTV service by using a dual-system hot backup technology
  • FIG. 2 is a flowchart of a multicast implementation method according to an embodiment of the present invention
  • FIG. 3 is a multicast implementation according to an embodiment of the present invention.
  • Network device block diagram
  • FIG. 4 is a block diagram of a second network device implemented by a multicast according to an embodiment of the present invention.
  • the embodiment of the invention provides a multicast implementation method and a network device.
  • the method includes: receiving, by the first network device, a multicast group management protocol IGMP message from the terminal, where the IGMP message includes the multicast group information requested by the terminal; acquiring multicast backup information, the multicast backup information And including the port information of the IGMP message, the information about the terminal, and the multicast group information; and sending the multicast backup information to the second network device, so that the second network device is in the first When the network device is faulty, the multicast stream is forwarded to the terminal according to the multicast backup information.
  • the technical solution provided by the embodiment of the present invention can solve the problem that the IPTV service is interrupted due to the failure of the primary router or the primary link, and the user experience is poor.
  • IP multicast technology The deployment of IPTV services requires the use of IP multicast technology.
  • the IP multicast technology is used by the multicast source to send IP packets.
  • the destination IP address of the packet is the multicast group address. Only the terminal device that joins the multicast group can receive the IP multicast packet.
  • IP multicast protocol includes multicast group management protocol IGMP (Internet Group)
  • Management Protocol is a mechanism for establishing and maintaining multicast membership between a terminal and a router.
  • the terminal wants to join the specified multicast group, it sends an IGMP Report message carrying the multicast group address.
  • the terminal wants to leave the specified multicast group it sends the IGMP carrying the multicast group address. Leave message.
  • the router periodically checks whether a member of a known multicast group is active through the IGMP protocol, and collects and maintains the membership of the connected network group.
  • dual-system hot backup technology can be adopted.
  • the dual-system refers to the two primary and secondary network devices.
  • the two network devices use the active and standby election protocols, such as the Virtual Router Redundancy Protocol (VRRP) to determine the primary and backup relationships.
  • VRRP Virtual Router Redundancy Protocol
  • the aggregation switch is dual-homed to this.
  • On two network devices The link, port, or VLAN of each pair of primary and secondary relationships is called a protection group and can pass the protection group ID (identification).
  • the protection group relationship table is stored on the primary and backup network devices, including the port number of the primary network device, the protection group ID, and the port number of the standby network device.
  • Figure 1 is a network diagram for deploying IPTV services using dual-system hot backup technology.
  • the first network device is in a standby state
  • the second network device is in a standby state.
  • the switch 1 is dual-homed to the first network device and the second network device, and the port 1 of the first network device and the port 4 of the second network device are a pair. Active and standby ports.
  • Example 1
  • FIG. 2 is a flowchart of a multicast implementation method according to an embodiment of the present invention, where the method includes:
  • the first network device receives the IGMP message from the terminal, where the IGMP message includes the multicast group information requested by the terminal.
  • the multicast group information includes a multicast group address
  • a multicast source address may further include £
  • the first network device updates the local IGMP group information according to the IGMP message, where the IGMP group information includes multicast group information and an egress port list.
  • the first network device updates the outbound port list of the local IGMP group information according to the port that receives the IGMP message.
  • the first network device receives the IGMP Report message of the terminal 1 through the port 1 and requests to join the multicast group 1; when there is no multicast group 1 in the local IGMP group information of the first network device, Add multicast group 1 address and port 1; when there is already multicast group 1, add port 1 to the outbound port list of multicast group 1. If the terminal 1 sends an IGMP Leave message to the multicast group 1, the port 1 is deleted from the outbound port list in multicast group 1 in the IGMP group information.
  • the first network device may establish a multicast path with the multicast source according to the local IGMP group information, and receive the multicast stream from the multicast source. For example, according to the local IGMP group information, PIM (Protocol Independent Multicast) is applied. The PIM protocol is applied to multicast routers to establish and maintain multicast routes.
  • a multicast source establishes a secondary multicast source.
  • a data transmission path to multiple receiving ends) establishes a multicast path with a multicast source.
  • the first network device may generate a multicast forwarding table according to the local IGMP group information, and forward the multicast stream to the terminal, where the multicast forwarding table includes an ingress port, a multicast group information, and an egress port list.
  • the multicast backup information includes port information of receiving the IGMP message, information about the terminal, and the multicast group information.
  • the first network device may obtain information about the terminal according to the link layer encapsulation information of the IGMP.
  • the information of the terminal includes an IP address of the terminal, a MAC address of the terminal, a VLAN tag (for example, a public network VLAN tag, a private network VLAN tag), and the like.
  • the first network device and the second network device may be a service gateway or a router, such as a BRAS (Broadband Remote Access Server).
  • BRAS Broadband Remote Access Server
  • the first network device and the second network device are in a master-slave relationship.
  • the first network device and the second network device can determine the relationship between the master and the backup through the active and standby election protocols, for example, VRRP, and maintain the relationship between the master and the backup.
  • active and standby election protocols for example, VRRP
  • the first network device and the second network device store a protection group relationship table, including a correspondence between a primary network device port number, a protection group ID, and a backup network device port number.
  • the port information may be a port number or a protection group ID.
  • the protection group ID can be obtained by querying the protection group relationship table according to the port number of the IGMP message.
  • the first network device Before receiving the IGMP message from the terminal, the first network device may establish a PPOOE (Point-to-Point Protocol over Ethernet) session with the terminal, and in the The PPPOE session information is backed up on the network device, so that the second network device maintains a PPPOE session with the terminal when the first network device fails.
  • PPOOE Point-to-Point Protocol over Ethernet
  • the IGMP message can be encapsulated by PPPOE.
  • the first network device may send the multicast backup information to the second network device by using a control plane, such as a signaling channel.
  • a control plane such as a signaling channel.
  • the first network device may also establish a reliable transmission channel, such as a TCP connection, with the second network device, and send the multicast backup information to the second network device through the reliable transmission channel.
  • a reliable transmission channel such as a TCP connection
  • the second network device may query the protection group relationship table according to the port information, and obtain an outbound port that the second network device forwards the multicast stream to the terminal. For example, as shown in FIG. 1, the first network device receives the IGMP message from the terminal 1 through the port 1, and the port information sent by the first network device to the second network device is the port number 1, and the second network device Query the entry in the protection group relationship table with the primary port number being 1, and obtain the corresponding backup port number 4. That is, when the first network device fails, the second network device sends the multicast data to the terminal. Port 4.
  • the second network device may update the local IGMP group information according to the multicast group information and the egress port.
  • the network device may also generate an IGMP copy message, where the IGMP copy message includes at least the IGMP message and the data link layer header from the terminal.
  • the format of the IGMP replication packet is as follows:
  • Protocol version number this field is 1 byte. For example, you can fill in 0x01, which means version 1;
  • Type of the message This field is 1 byte. For example, you can define the values as follows:
  • Packet Length defines the length of the Packet part, which is 2 bytes; Reserved: Reserved field, this field is 2 bytes;
  • Packet The packet body, which may include a data link layer header and an IGMP packet, and has a variable length; Attributes: An attribute field, which is a variable length field, can contain multiple attributes, each of which is in TLV (Type Length Value) format.
  • TLV Type Length Value
  • AttrType Describes the type of the attribute, which is 1 byte. For example, you can define the following attribute types:
  • VRF VPN Routing and Forwarding Table
  • the first network device sends the foregoing packet to the second network device.
  • the second network device can simulate the manner in which the terminal sends IGMP messages, and constructs a packet format that can be processed by the IGMP protocol stack according to the foregoing packet.
  • the second network device may update the local IGMP group information according to the foregoing packet.
  • the second network device may establish a multicast path with the multicast source according to the local IGMP group information, and receive the multicast stream from the multicast source.
  • the second network device may send a port list to the forwarding plane according to the local IGMP group information, and generate a multicast forwarding table.
  • the second network device When the second network device is in the standby state, the second network device does not perform multicast data. Encapsulating, not forwarding the multicast stream to the egress port; when the first network device fails, the second network device switches to the primary state, the second network device encapsulates the multicast data, and forwards the data to the egress port Multicast stream.
  • the second network device when the second network device is in the standby state, the second network device does not send the port list to the forwarding plane, and because there is no out port, the multicast stream is not forwarded to the terminal; when the first network device When the second network device is switched to the primary state, the second network device sends a port list according to the local IGMP group information, generates a multicast forwarding table, and encapsulates the multicast data, and forwards the multicast stream to the terminal. .
  • the technical solution provided by the embodiment of the present invention is backed up on the second network device.
  • the IGMP group information of the terminal when the first network device fails, the second network device continues to forward the multicast stream to the terminal, and the IPTV service is not interrupted, thereby ensuring the user experience.
  • Example 2
  • FIG. 3 is a block diagram of a network device implemented by a multicast according to an embodiment of the present invention.
  • the network device includes a first receiver 201, an obtaining module 202, and a first transmitter 203. among them:
  • the first receiver 201 is configured to receive an IGMP message from the terminal, where the IGMP message includes the multicast group information requested by the terminal;
  • the obtaining module 202 is configured to obtain multicast backup information, where the multicast backup information includes port information of the IGMP message, information about the terminal, and the multicast group information.
  • the first transmitter 203 is configured to send the multicast backup information to the second network device, so that the second network device sends the multicast backup information to the terminal according to the multicast backup information when the network device is faulty. Forward the multicast stream.
  • the multicast group information includes a multicast group address, and may also include a multicast source address.
  • the network device is further configured to update the local IGMP group information according to the IGMP message, where the IGMP group information includes the multicast group information and the outbound port list.
  • the network device updates the outbound port list of the local IGMP group information according to the port that receives the IGMP message.
  • the network device may establish a multicast path with the multicast source according to the local IGMP group information, and receive the multicast stream from the multicast source.
  • the obtaining module 202 may obtain information about the terminal according to the link layer encapsulation information of the IGMP.
  • the information of the terminal includes an IP address of the terminal, and the terminal MAC address, VLAN tag (such as public network VLAN tag, private network VLAN tag).
  • the network device and the second network device may be routers, such as BRAS.
  • the network device and the second network device are in a master-slave relationship.
  • the network device may further include:
  • the master/slave relationship module 204 is configured to run an active/standby election protocol, such as VRRP, to maintain a master-slave relationship with the second network device.
  • an active/standby election protocol such as VRRP
  • the network device and the second network device store a protection group relationship table, including a correspondence between a primary network device port number, a protection group ID, and a backup network device port number.
  • the port information may be a port number or a protection group ID.
  • the protection group ID can be obtained by querying the protection group relationship table according to the port number of the IGMP message.
  • the network device may establish a PPPOE session with the terminal before receiving the IGMP message from the terminal.
  • the network device may back up the PPPOE session information on the second network device, so that the second network device maintains a PPPOE session with the terminal when the network device fails.
  • the IGMP message can be encapsulated by PPPOE.
  • the transmitter 203 may send the port information, the information of the terminal, and the multicast group information to a second network device by using a control plane, such as a signaling channel.
  • a control plane such as a signaling channel.
  • the network device may also establish a reliable transmission channel, such as a TCP connection, with the second network device, and the transmitter 203 sends the port information and the device to the second network device by using the reliable transmission channel.
  • a reliable transmission channel such as a TCP connection
  • the second network device queries the protection group relationship table according to the port information, and obtains an egress port that the second network device forwards the multicast stream to the terminal.
  • the second network device may update the local IGMP group information according to the multicast group information and the egress port.
  • the network device may also generate an IGMP copy message, where the IGMP copy message includes at least the IGMP message and the data link layer header from the terminal.
  • the format of the IGMP copy is as follows:
  • Protocol version number this field is 1 byte. For example, you can fill in 0x01, which means version 1;
  • Type Type of the message. This field is 1 byte. For example, the values can be defined as follows: 1 : IGMP message type;
  • Packet Length defines the length of the Packet part, which is 2 bytes; Reserved: Reserved field, this field is 2 bytes;
  • the packet body which may include a data link layer header and an IGMP packet, and has a variable length;
  • An attribute field which is a variable length field, can contain multiple attributes, each of which is in TLV (Type Length Value) format.
  • TLV Type Length Value
  • AttrType Describes the type of the attribute, which is 1 byte. For example, you can define the following attribute types:
  • VRF VPN Routing and Forwarding Table
  • Layer 3 VPN Virtual Private Network
  • the network device sends the foregoing packet to the second network device.
  • the second network device can simulate the manner in which the terminal sends IGMP messages, and constructs a packet format that can be processed by the IGMP protocol stack according to the foregoing packet.
  • the second network device may update the local IGMP group information according to the foregoing packet.
  • the second network device forwards the multicast stream to the terminal according to the multicast forwarding table generated by the local IGMP group information.
  • FIG. 4 it is a block diagram of a second network device implemented by a multicast according to an embodiment of the present invention.
  • the second network device includes a second receiver 301, an update module 302, and a second transmitter 303. among them:
  • the second receiver 301 is configured to receive multicast backup information from the first network device, where the multicast backup information includes the port information that the first network device receives the multicast group management protocol IGMP message from the terminal.
  • the update module 302 is configured to update the local IGMP group information according to the multicast group backup information;
  • the second transmitter 303 is configured to forward the multicast stream to the terminal according to the local IGMP group information when the first network device is faulty.
  • the first network device obtains multicast backup information, where the multicast backup information includes port information that the first network device receives an IGMP message from the terminal, where the terminal Information and the multicast group information.
  • the port information may be a port number or a protection group ID.
  • the multicast group information includes a multicast group address, and may also include a multicast source address.
  • the information of the terminal includes an IP address of the terminal, a MAC address of the terminal, a VLAN tag (for example, a public network VLAN tag, a private network VLAN tag), and the like.
  • a VLAN tag for example, a public network VLAN tag, a private network VLAN tag
  • the first network device and the second network device may be routers, such as BRAS.
  • the first network device and the second network device are in a master-slave relationship.
  • the second network device may also run an active/standby election protocol, such as VRRP, to maintain a master-slave relationship with the first network device.
  • an active/standby election protocol such as VRRP
  • the second network device stores a protection group relationship table, including a correspondence between a primary network device port number, a protection group ID, and a backup network device port number.
  • the second receiver 301 receives PPPOE session information from the terminal of the first network device; when the first network device fails, the The second network device is further configured to maintain a PPPOE session with the terminal according to the PPPOE session information.
  • the second network device may update the local IGMP group information according to the multicast backup information. specifically,
  • the second network device queries the protection group relationship table according to the port information, and obtains an outbound port that the second network device forwards the multicast stream to the terminal;
  • the second network device updates the local IGMP group information according to the multicast group information and the egress port.
  • the second network device may receive an IGMP copy message from the first network device, where the IGMP copy message includes at least the IGMP message and the data link layer header from the terminal.
  • the format of the IGMP copy message is as follows:
  • Protocol version number this field is 1 byte. For example, you can fill in 0x01, which means version 1;
  • Type Type of the message. This field is 1 byte. For example, the values can be defined as follows: 1 : IGMP message type;
  • Packet Length defines the length of the Packet part, which is 2 bytes; Reserved: Reserved field, this field is 2 bytes;
  • the packet body which may include a data link layer header and an IGMP packet, and has a variable length;
  • An attribute field which is a variable length field, can contain multiple attributes, each of which is in TLV (Type Length Value) format.
  • TLV Type Length Value
  • AttrType Describes the type of the attribute, which is 1 byte. For example, you can define the following attribute types:
  • the second network device may simulate a manner in which the terminal sends an IGMP message, and construct a packet format that can be processed by the IGMP protocol stack according to the IGMP copy message.
  • the second network device may update the local IGMP group information according to the IGMP copy message.
  • the second network device may establish a multicast path with the multicast source according to the local IGMP group information, and receive the multicast stream from the multicast source.
  • the second network device may send a port list to the forwarding plane according to the local IGMP group information, and generate a multicast forwarding table.
  • the second network device When the second network device is in the standby state, the second network device does not perform multicast data. Encapsulating, not forwarding the multicast stream to the egress port; when the first network device fails, the second network device switches to the primary state, the second network device encapsulates the multicast data, and forwards the data to the egress port Multicast stream.
  • the second network device when the second network device is in the standby state, the second network device does not send the port list to the forwarding plane, and because there is no out port, the multicast stream is not forwarded to the terminal; when the first network device When the second network device is switched to the primary state, the second network device sends a port list according to the local IGMP group information, generates a multicast forwarding table, and encapsulates the multicast data, and forwards the multicast stream to the terminal. .
  • the technical solution provided by the embodiment of the present invention is also applicable to the control of the primary and backup links by using MC-LAG (Multi-Chassis Link Aggregation Group) or Smartlink (Flexible Link, or Backup Link) technology. Network scenario.
  • MC-LAG Multi-Chassis Link Aggregation Group
  • Smartlink Felexible Link, or Backup Link
  • the second network device when the IGMP group information of the terminal is backed up on the second network device, when the first network device fails, the second network device maintains the IGMP group information of the terminal, and the second The network device can continue to forward the multicast stream to the terminal, and the IPTV service is not interrupted, thereby ensuring the user experience.
  • the IPTV service when the primary router fails, the IPTV service is interrupted, and the user experience is poor.
  • a program to instruct related hardware may be stored in a computer readable storage medium, which may be a ROM/RAM, a magnetic disk or an optical disk or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention porte sur un procédé de réalisation de multidiffusion et sur un dispositif réseau. Le procédé comprend : un premier dispositif réseau reçoit un message de protocole de gestion de groupe Internet (IGMP) à partir d'un terminal, le message IGMP comprenant des informations de groupe de multidiffusion demandées par le terminal ; des informations de sauvegarde de multidiffusion sont obtenues, et les informations de sauvegarde de multidiffusion comprennent les informations du port par l'intermédiaire duquel le message IGMP est reçu, les informations du terminal et les informations de groupe de multidiffusion ; les informations de sauvegarde de multidiffusion sont envoyées à un second dispositif réseau de façon à permettre au second dispositif réseau de transférer un flux de multidiffusion au terminal conformément aux informations de sauvegarde de multidiffusion lorsque le premier dispositif échoue. Par adoption de la solution technique fournie par des modes de réalisation de la présente invention, les problèmes de l'interruption du service de télévision par protocole Internet (IPTV) provoqués par la défaillance d'un routeur maître ou d'une liaison maître et de mauvaise expérience d'utilisateur dans l'état de la technique sont résolus.
PCT/CN2011/074357 2011-05-19 2011-05-19 Procédé de réalisation de multidiffusion et dispositif réseau Ceased WO2011144048A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201180000523.0A CN102742221B (zh) 2011-05-19 2011-05-19 一种组播实现的方法和网络设备
PCT/CN2011/074357 WO2011144048A2 (fr) 2011-05-19 2011-05-19 Procédé de réalisation de multidiffusion et dispositif réseau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2011/074357 WO2011144048A2 (fr) 2011-05-19 2011-05-19 Procédé de réalisation de multidiffusion et dispositif réseau

Publications (2)

Publication Number Publication Date
WO2011144048A2 true WO2011144048A2 (fr) 2011-11-24
WO2011144048A3 WO2011144048A3 (fr) 2012-04-19

Family

ID=44992100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/074357 Ceased WO2011144048A2 (fr) 2011-05-19 2011-05-19 Procédé de réalisation de multidiffusion et dispositif réseau

Country Status (2)

Country Link
CN (1) CN102742221B (fr)
WO (1) WO2011144048A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112822097A (zh) * 2019-11-15 2021-05-18 华为技术有限公司 报文转发的方法、第一网络设备以及第一设备组

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105848112B (zh) * 2015-01-16 2019-06-25 成都鼎桥通信技术有限公司 长期演进lte故障单站组播的实现方法及装置
CN109818869B (zh) * 2017-11-22 2021-06-04 北京华为数字技术有限公司 组播流量转发端口的生成方法及相关设备
CN109711809B (zh) * 2018-12-28 2021-07-30 广东益萃网络科技有限公司 商户属性设置方法、装置、计算机设备及存储介质
CN111372144B (zh) * 2020-03-23 2021-09-28 北京小鸟科技股份有限公司 组播视频码流的链路备份系统及方法
CN112615914B (zh) * 2020-12-10 2022-07-05 中国电信股份有限公司江苏分公司 一种利用边界网关协议传递组播热备表项的方法
CN113452585A (zh) * 2021-05-13 2021-09-28 新华三信息安全技术有限公司 通信方法及装置
CN114422484B (zh) * 2021-12-16 2024-01-30 广东电网有限责任公司 一种组播方法、装置、移动终端及存储介质
CN114465955B (zh) * 2022-01-06 2023-09-15 新华三技术有限公司 组播报文处理方法及装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101599853A (zh) * 2008-06-03 2009-12-09 中兴通讯股份有限公司 一种以太网双归连接保护中非返回模式的实现方法
CN101610200B (zh) * 2008-06-19 2012-04-04 华为技术有限公司 组播路由的切换方法及装置
CN101651553B (zh) * 2009-09-03 2013-02-27 华为技术有限公司 用户侧组播业务主备保护系统、方法及路由设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112822097A (zh) * 2019-11-15 2021-05-18 华为技术有限公司 报文转发的方法、第一网络设备以及第一设备组
US12184536B2 (en) 2019-11-15 2024-12-31 Huawei Technologies Co., Ltd. Packet forwarding method, first network device, and first device group

Also Published As

Publication number Publication date
CN102742221B (zh) 2015-07-29
CN102742221A (zh) 2012-10-17
WO2011144048A3 (fr) 2012-04-19

Similar Documents

Publication Publication Date Title
CN102742221B (zh) 一种组播实现的方法和网络设备
US9166807B2 (en) Transmission of layer two (L2) multicast traffic over multi-protocol label switching networks
US9197583B2 (en) Signaling of attachment circuit status and automatic discovery of inter-chassis communication peers
CN105900406B (zh) 针对网络服务可用性的技术
CN101931520B (zh) 一种切换方法及系统
CN112422307B (zh) Evpn和vpls共存双活的方法、设备及系统
CN108512739A (zh) 以太网虚拟专用网络中的多宿主路由器之间的组播状态
US9660898B2 (en) Enhanced protocol independent multicast source registration over a reliable transport
CN111385138B (zh) 用于拼接多宿主evpn和l2电路的逻辑隧道的核心隔离
WO2007012239A1 (fr) Procédé permettant de commuter la prestation de services d'un lan privé virtuel et système y afférant
CN107666397A (zh) Pe路由器之间传送多播组离开请求的方法和pe路由器
WO2012003743A1 (fr) Procédé et appareil d'acheminement de trafic de diffusion groupée
CN105706393A (zh) 在链路聚合组中支持操作者命令的方法和系统
WO2007028293A1 (fr) Procede de transfert d'un ensemble multidiffusion dans un vpls
WO2012075831A1 (fr) Procédé et système de protection de multidiffusion
WO2013139159A1 (fr) Procédé de transmission de paquet dans un réseau et dispositif côté fournisseur
EP2634978B1 (fr) Procédé de réexpédition de message et dispositif en réseau
WO2010111956A1 (fr) Procédé et système de convergence de trajet de relais multidiffusion
US10951428B2 (en) Reliable multicast using a redundant unicast overlay network
WO2012024952A1 (fr) {0> procédé et système de commutation de chemin sur la base d'un service point à multipoint <}0{><0}
WO2009082905A1 (fr) Procédé système et dispositif commutateur permettant l'établissement dynamique de réseau local virtuel de multidiffusion
CN102333024B (zh) 虚拟专用局域网业务vpls的数据帧的转发方法、设备和系统
WO2008080427A1 (fr) Procédé de fourniture de données
WO2018014767A1 (fr) Procédé et dispositif de détermination d'informations, et support de stockage
WO2022017432A1 (fr) Procédé, appareil et système d'envoi de paquets de multidiffusion

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201180000523.0

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11782965

Country of ref document: EP

Kind code of ref document: A2