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WO2009039788A1 - Procédé et appareil de réalisation de transmission de multidiffusion - Google Patents

Procédé et appareil de réalisation de transmission de multidiffusion Download PDF

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Publication number
WO2009039788A1
WO2009039788A1 PCT/CN2008/072449 CN2008072449W WO2009039788A1 WO 2009039788 A1 WO2009039788 A1 WO 2009039788A1 CN 2008072449 W CN2008072449 W CN 2008072449W WO 2009039788 A1 WO2009039788 A1 WO 2009039788A1
Authority
WO
WIPO (PCT)
Prior art keywords
multicast
egress
address
request
network
Prior art date
Application number
PCT/CN2008/072449
Other languages
English (en)
Chinese (zh)
Inventor
Jianping Wu
Mingwei Xu
Yong Cui
Yuntao Zhou
Hui Liu
Wei Cao
Original Assignee
Huawei Technologies Co., Ltd.
Tsinghua University
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., Tsinghua University filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009039788A1 publication Critical patent/WO2009039788A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • 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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/16—Multipoint routing

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method and apparatus for implementing multicast transmission. Background technique
  • IPv4 fourth-generation Internet Protocol
  • IPv6 sixth generation Internet Protocol
  • IPv6 Intra Network Internet Protocol
  • E-IP Extra Network Internet Protocol
  • the prior art proposes a multicast translation technology based on address translation.
  • the basic idea of the technology is: at the Provider Edge router (PE), E The IP multicast control packet and the multicast data packet are respectively translated into an I-IP multicast control packet and a multicast data packet, where the PE is an edge router between the intermediate transport network and the peripheral client network; Then, the PE transmits the translated I-IP multicast packet to the I-IP network, and when the packet reaches the egress PE, the packet is restored to the corresponding E-IP multicast packet, and Will The text continues to be transmitted in the E-IP network.
  • PE Provider Edge router
  • E-IP multicast data can be established on the transport network provider router (P, Provider router) of the I-IP network.
  • P Provider router
  • An E-IP multicast tree corresponds to an I-IP multicast tree in the I-IP network.
  • IPv6 the protocol running on the intermediate transport network
  • IPv4 the protocol running on the peripheral client network
  • IPv6 prefix is a specific IPv6 address prefix
  • the specific address prefix can be obtained through address allocation or internally configured by an Internet Service Provider (ISP).
  • ISP Internet Service Provider
  • IPv4 unicast or multicast routing table in the form a.b.c.d/M, where M is the bit length of the mask.
  • 4over6 address mapping it can be transformed into a pseudo IPv6 address: 4over6prefix: a.b.c.d /len+M.
  • 4over6prefix/len is a pseudo-IPv6 address-specific prefix with a length of len.
  • the pseudo-IPv6 address-specific prefix can be obtained through address allocation, or can be allocated and managed by an ISP, so that all PEs can be identified without negotiation.
  • the 4over6 border router uses the pseudo IPv6 address prefix 4over6prefix/len to prefix match the destination address. If the prefix within the len prefix length is the same, then the IPv6 route is determined to be a pseudo IPv6 route, and then the inverse transform of the 4over6 route conversion is performed. Perform a route restore.
  • the above multicast transition technology can realize the network communication of the peripheral customer network through the intermediate transmission network under the condition that the I-IP and the E-IP are different, the technology can only be applied to the case where the intermediate transmission network supports the unicast data transmission. If you need to carry out multicast transmission through the intermediate transmission network, all routers including PE and a large number of P routers in the intermediate transmission network need to support the multicast protocol. In practical applications, it is often due to funds, manpower, technology, etc.
  • the intermediate P router in the intermediate transmission network does not support the multicast protocol, so that the multicast transition technology cannot be applied if the intermediate transmission network does not support the multicast protocol, thereby causing I-IP and E- When the IP is different, the peripheral customer network cannot be multicasted through the intermediate transmission network.
  • the network of the customer network is transmitted through the intermediate transmission network, and translation of different network protocols is required.
  • the E-IP protocol type is IPv4
  • the I-IP protocol type is IPv6
  • the IPv4 address of the E-IP is translated into I-IP.
  • the IPv6 address is relatively easy. Since the IPv6 address has 128 bits, the translation can be combined with a 32-bit IPv4 address and a 96-bit specific IPv6 prefix to form a 128-bit pseudo IPv6 address.
  • the E-IP protocol type is IPv6.
  • the IPv4 address is 128 bits and the IPv4 address is 32 bits. Unless a complex inter-PE address negotiation mechanism is added, or a specific domain is added to the protocol, the 128-bit IPv6 address cannot be obtained. Translated into a 32-bit IPv4 address, which makes the technical solution more complicated to implement. In addition, since translation and restoration need to follow pre-established rules, and the routing of I-IP multicast control messages obtained by E-IP translation in the I-IP network needs to add an additional addressing mechanism, I - The intermediate P router of the IP transport network also needs to support this addressing mechanism accordingly, which also brings great difficulty in implementing the above-mentioned prior art implementation.
  • a method for implementing multicast transmission comprising:
  • the corresponding relationship between the multicast address of the multicast data and the multicast address established on the ingress PE and the corresponding egress PE Determining, respectively, respective egress PEs that match the multicast data;
  • An apparatus for implementing multicast transmission comprising: a peripheral client network processing module, an intermediate transmission network processing module, and an intermediate transmission network transmission module, wherein:
  • the peripheral client network processing module is configured to: when determining that the received multicast data needs to be transmitted across the intermediate transmission network, send the multicast data to the intermediate transmission network processing module;
  • the intermediate transmission network processing module is configured to: establish, according to the multicast address of the multicast data, and establish Corresponding relationship between the multicast address and the egress PE, determining each egress PE that matches the multicast data, and encapsulating the multicast data by using the determined address of each egress PE;
  • the intermediate transmission network transmission module is configured to: send each multicast data encapsulated by the intermediate transmission network processing module to the determined outlet PEs through the intermediate transmission network in a unicast manner.
  • the multicast address established by the ingress PE and the corresponding egress are
  • the mode is sent to the egress PE, so that when the intermediate transmission network does not support the multicast protocol, the multicast transition technology can also be used to implement multicast transmission, and in the specific implementation process, only the intermediate transmission network needs to be located.
  • the PE router at the edge of the peripheral customer network supports the multicast mechanism. It does not require a large number of P routers in the middle of the intermediate transmission network to support the multicast protocol, which makes the solution easier to implement and can reduce the implementation cost.
  • FIG. 1 is a translated format used in the translation of different network protocols in the prior art
  • FIG. 2 is a flowchart of a method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of establishing a correspondence between the multicast address and a corresponding egress PE on an ingress PE according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of deleting the multicast address and corresponding exit on an ingress PE according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an apparatus according to an embodiment of the present invention.
  • implementing multicast transmission includes the following steps:
  • Step 201 The ingress service provider edge router (PE) receives the multicast data; and determines whether the received multicast data needs to be transmitted across the network. If necessary, step 202 is performed; otherwise, the multicast data is transmitted in the network.
  • PE ingress service provider edge router
  • Step 202 The ingress PE is based on the multicast address of the multicast data, and on itself Corresponding relationship between the established multicast address and the corresponding egress PE, and determining each egress PE that matches the multicast data;
  • Step 203 The ingress PE separately encapsulates the multicast data by using the determined addresses of the egress PEs, and sends the encapsulated multicast data to the office through the intermediate transmission network in a unicast manner.
  • the respective outlet PEs are determined.
  • each of the egress PEs may further decapsulate the encapsulated multicast data, and further perform the decapsulated multicast data. Forward until the data transfer is completed.
  • the ingress PE uses a multicast forwarding entry to store and maintain the correspondence between the multicast address and each egress PE.
  • the multicast forwarding item is taken as an example to provide an embodiment of the present invention. The method is described; of course, in other embodiments of the present invention, other manners may be used to save and maintain the correspondence between the multicast address and the egress PE set, without affecting the implementation of the present invention.
  • the following is a description of how to establish and delete the correspondence between the multicast address and the egress PE on the ingress PE for the client of the peripheral client network to join the multicast group and exit the multicast group.
  • the ingress and egress are both for the flow of multicast data transmission, and not for the "3 ⁇ 4" flow direction when establishing and maintaining the correspondence.
  • establishing a correspondence between the multicast address and the corresponding egress PE on the ingress PE includes the following steps:
  • Step 301 A client client that requests to join the multicast group, and sends a request in the E-IP format to the egress PE that is directly connected to the peer network through the peripheral client network.
  • the join packet carries the group.
  • the multicast address includes the address of the multicast source in the multicast group to which the client is to join, and the address of the multicast group to which the client wants to join; for convenience of presentation, the join(s, g) indicates a join message, where s represents an address of the multicast source, and g represents an address of the multicast group;
  • Step 302 The egress PE determines, according to the unicast routing table, that the address s of the multicast source is located in an E-IP network connected to an ingress PE at the other end of the intermediate transmission network, and the join (s, g) encapsulate the I-IP address with the egress PE, and pass the encapsulated packet through the intermediate transmission network in unicast mode. Sending to the inlet PE of the other end;
  • Step 303 The ingress PE receives the encapsulated join(s, g) packet, decapsulates the packet, and performs the following processing according to the multicast address (s, g) in the packet:
  • the information about the egress PE obtained after decapsulation is added to the multicast address and Corresponding relationship between the egress PE and the multicast address corresponding to the multicast group client is established in the corresponding relationship of the egress PE; when the multicast forwarding entry is used to save the correspondence, the foregoing processing is: If it is determined that the multicast forwarding entry entry((s, g), ⁇ PE ⁇ ) corresponding to the multicast address (s, g) in the join(s, g) already exists, the packet is decapsulated. The I-IP address of the egress PE is added to the PE set ⁇ PE ⁇ of the forwarding entry;
  • the corresponding relationship is established on the ingress PE;
  • the foregoing processing is: if there is no multicast forwarding entry corresponding to the multicast address (s, g) in the join (s, g), then A multicast forwarding entry ((s, g), ⁇ PE ⁇ ) corresponding to the multicast address (s, g) is established on the ingress PE, and the I-IP address in the multicast forwarding entry PE set ⁇ PE ⁇ is set. Initialized to the I-IP address of the egress PE.
  • the embodiment of the present invention may further include the following steps:
  • the ingress PE forwards the join(s, g) message to the next hop client edge (CE) router, and the CE router further completes the registration process of the client joining the multicast group.
  • CE client edge
  • the corresponding relationship between deleting the multicast address and the corresponding egress PE on the ingress PE includes the following steps:
  • Step 401 The peripheral client network client requesting to leave the multicast group sends a request quit message in the E-IP format to the egress PE directly connected to the multicast client network; the packet also carries the join text. Similar to the multicast address, the request is logged out as quit(s, g);
  • Step 402 The egress PE determines, according to the unicast routing table, that the address s of the multicast source is located in an E-IP network connected to the ingress PE of the other end of the intermediate transmission network, and the quit(s, g) Encapsulating the I-IP address of the egress PE, and sending the encapsulated packet to the ingress PE of the other end through the intermediate transmission network in a unicast manner;
  • Step 403 The ingress PE receives the encapsulated quit(s, g) packet, decapsulates the packet, and performs the following processing according to the multicast address (s, g) in the packet:
  • the mapping between the multicast address corresponding to the multicast address (s, g) in the quit (s, g) and the egress PE is obtained, and the information of the egress PE obtained by decapsulation is in the corresponding relationship.
  • Delete When a multicast forwarding entry is used to save the corresponding relationship, the above processing is:
  • the multicast forwarding entry entry((s, g), ⁇ PE ⁇ ) corresponding to the multicast address (s, g) in the quit(s, g) is obtained, and the egress PE obtained after decapsulation is obtained.
  • the I-IP address is deleted from the PE set ⁇ PE ⁇ of the forwarding entry, thereby deleting the correspondence between the egress PE and the multicast address corresponding to the request to exit the multicast group client; further, if collecting from the PE After the I-IP address of the egress PE is deleted, the PE set is an empty set, and the multicast forwarding entry ((s, g), ⁇ PE ⁇ ) may be further deleted to save the storage space of the PE.
  • the correspondence between the multicast address and the corresponding egress PE can be maintained in different manners.
  • the following is an example of saving the corresponding relationship by using a multicast forwarding entry, and three types of maintaining the corresponding relationship. Ways to explain:
  • Each multicast address ( s, g ) corresponds to a multicast forwarding entry ((s, g), ⁇ PE ⁇ ). At this time, any egress PE will not receive data that is not its own, but You need to maintain more multicast forwarding entries on the ingress PE.
  • Some multicast addresses with common characteristics share an aggregated multicast forwarding entry entry((*, g*), ⁇ PE ⁇ ).
  • the aggregation technology is used.
  • a plurality of different (s, g) identical features share an entry, thereby reducing the number of multicast forwarding items that the PE router needs to maintain, and reducing the burden on the router.
  • the common features of the multiple multicast addresses may be: the prefixes of the g addresses are the same, the prefixes of the s addresses are the same, and of course, other common features may not be affected, and the implementation of the present invention is not affected.
  • the ingress PE is multicast according to the multicast data.
  • the ingress PE is based on the multicast in the join packet or the quit packet.
  • the address (s, g) determines an aggregated multicast forwarding entry corresponding to the address, and completes the step of establishing and deleting the corresponding relationship in the aggregated multicast forwarding entry.
  • the specific maintenance mode can be as follows: Use the Border Gateway Protocol (BGP) message instead of the join message to maintain the entry ((*,*), ⁇ PE ⁇ ) entry, ie: The ingress PE will all known BGP neighbors. The PE is added to the ⁇ PE ⁇ set. After receiving the multicast data, the ingress PE sends the multicast data to all BGP neighbor PEs in unicast mode.
  • Border Gateway Protocol BGP
  • This method is suitable for the case where the number of PEs in the I-IP transmission network is not large, and the burden on the PE can be effectively alleviated.
  • the apparatus for implementing multicast transmission includes: a peripheral client network processing module 502, an intermediate transport network processing module 503, and an intermediate transport network transmission module 504, and the apparatus may further include: a peripheral client.
  • the multicast forwarding correspondence storage module 505 is configured to store a correspondence between the established multicast address and the egress PE;
  • the peripheral client network transmission module 501 is configured to: receive the multicast data sent by the client network client, and send the multicast data to the peripheral client network processing module 502;
  • the peripheral client network processing module 502 is configured to: when determining that the received multicast data needs to be transmitted across the intermediate transmission network by querying the multicast routing table, sending the multicast data to the intermediate transmission network processing module 503;
  • the intermediate transmission network processing module 503 is configured to: determine, according to the multicast address of the multicast data, and the correspondence between the multicast address and the egress PE stored in the multicast forwarding correspondence storage module 505, Each of the egress data PEs that match the multicast data, and the multicast data are encapsulated by using the determined addresses of the egress PEs;
  • the intermediate transmission network transmission module 504 is configured to: send each multicast data encapsulated by the intermediate transmission network processing module 503 to the determined outlet PEs through the intermediate transmission network in a unicast manner.
  • the apparatus in order to enable the establishment and deletion of the correspondence in the multicast forwarding correspondence storage module 505, the apparatus further includes a multicast transition control module 506.
  • the intermediate transmission network transmission module 504 is also used to:
  • the intermediate transmission network processing module 503 is further configured to: decapsulate the encapsulated request or request to exit the packet, and send the decapsulated packet to the peripheral client network processing module 502 for processing; the peripheral client The network processing module 502 is further configured to: after receiving the request for decapsulation to join or request to quit the message, notify the multicast transition control module 506 to perform processing;
  • the multicast transition control module 506 is configured to: add or request to exit the multicast address carried in the packet according to the request, and update the correspondence between the multicast address stored in the multicast forwarding correspondence storage module 505 and the egress PE relationship.
  • the apparatus for implementing multicast transmission corresponds to the ingress PE as described above, and when the apparatus is used as an egress PE, the intermediate transmission network processing module 503 may further be used to access the intermediate transmission network.
  • the encapsulated multicast data received by the transmission module 504 is decapsulated, and the decapsulated multicast data is sent to the peripheral client network processing module 502;
  • the peripheral client network processing module 502 receives the received information through the peripheral client network transmission module 501.
  • the decapsulated multicast data is further forwarded to complete the transmission of the multicast data in the peripheral client network.
  • the peripheral client network processing module 502 is further configured to:

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé et un appareil de réalisation de transmission de multidiffusion, ce procédé consistant: à recevoir des données de multidiffusion devant être transmises à travers un réseau, l'entrée PE détermine les sorties PE correspondant aux données de multidiffusion selon l'adresse de multidiffusion de ces données et la relation correspondante entre l'adresse de multidiffusion et les sorties PE correspondantes fixées dans l'entrée PE; respectivement par unidiffusion à travers un réseau de milieu de transmission. Avec ce procédé et cet appareil, dans le cas où un réseau de milieu de transmission ne supporte pas de protocole de multidiffusion, la transmission de multidiffusion utilisant une technologie de multidiffusion transitoire peut être réalisée, il n'est pas nécessaire pour le grand nombre de routeurs dans le réseau de milieu de transmission de supporter un protocole de multidiffusion, par ailleurs, le coût de réalisation est réduit.
PCT/CN2008/072449 2007-09-20 2008-09-22 Procédé et appareil de réalisation de transmission de multidiffusion WO2009039788A1 (fr)

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CN200710154643A CN101394342B (zh) 2007-09-20 2007-09-20 实现组播传输的方法和装置
CN200710154643.1 2007-09-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632678A (zh) * 2017-03-22 2018-10-09 中兴通讯股份有限公司 一种数据传输方法、装置及系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104426680B (zh) * 2013-09-03 2018-03-16 华为技术有限公司 数据传输方法、装置和系统
CN104954265B (zh) 2014-03-25 2018-06-15 华为技术有限公司 发送组播报文的方法及交换机
CN105871565B (zh) * 2015-01-20 2019-11-29 华为技术有限公司 用于组播转发的方法及装置
CN106453088B (zh) * 2016-09-28 2019-06-25 平安科技（深圳）有限公司 一种静态路由配置方法及终端

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050002395A1 (en) * 2003-06-04 2005-01-06 Nec Corporation IP multicast distribution system, streaming data distribution system and program therefor
CN1741492A (zh) * 2005-08-31 2006-03-01 杭州华为三康技术有限公司 控制组播数据转发的设备及方法
CN1744574A (zh) * 2005-09-02 2006-03-08 杭州华为三康技术有限公司 组播报文穿越非组播网络的方法及其应用的网络系统
CN101009669A (zh) * 2007-01-05 2007-08-01 杭州华为三康技术有限公司 一种传输组播消息的方法和系统以及路由设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7483439B2 (en) * 2005-03-21 2009-01-27 Cisco Technology, Inc. VPN services using address translation over an IPv6 network
CN100481817C (zh) * 2006-01-23 2009-04-22 北京交通大学 一种基于ip/mpls/bgp的多域组播一体化数据分发结构及方法
CN101035057B (zh) * 2007-03-30 2011-03-30 华为技术有限公司 建立组播共享树的方法和数据传送的方法、通信网络

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050002395A1 (en) * 2003-06-04 2005-01-06 Nec Corporation IP multicast distribution system, streaming data distribution system and program therefor
CN1741492A (zh) * 2005-08-31 2006-03-01 杭州华为三康技术有限公司 控制组播数据转发的设备及方法
CN1744574A (zh) * 2005-09-02 2006-03-08 杭州华为三康技术有限公司 组播报文穿越非组播网络的方法及其应用的网络系统
CN101009669A (zh) * 2007-01-05 2007-08-01 杭州华为三康技术有限公司 一种传输组播消息的方法和系统以及路由设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632678A (zh) * 2017-03-22 2018-10-09 中兴通讯股份有限公司 一种数据传输方法、装置及系统
CN108632678B (zh) * 2017-03-22 2023-03-24 中兴通讯股份有限公司 一种数据传输方法、装置及系统

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