WO2008071032A1 - Système de surveillance de trajet de multidiffusion ip et procédé associé - Google Patents

Système de surveillance de trajet de multidiffusion ip et procédé associé Download PDF

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Publication number
WO2008071032A1
WO2008071032A1 PCT/CN2006/003376 CN2006003376W WO2008071032A1 WO 2008071032 A1 WO2008071032 A1 WO 2008071032A1 CN 2006003376 W CN2006003376 W CN 2006003376W WO 2008071032 A1 WO2008071032 A1 WO 2008071032A1
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WO
WIPO (PCT)
Prior art keywords
multicast
address
pim
layer
protocol
Prior art date
Application number
PCT/CN2006/003376
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English (en)
Chinese (zh)
Inventor
Lingbo Xu
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Priority to KR1020097013767A priority Critical patent/KR101279790B1/ko
Priority to PCT/CN2006/003376 priority patent/WO2008071032A1/fr
Publication of WO2008071032A1 publication Critical patent/WO2008071032A1/fr

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Classifications

    • 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]
    • 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
    • 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 communications, and in particular, to an IP multicast route monitoring system and method.
  • Background of the Invention Multi-Service Transport Platform (MSTP) based on SDH (Synchronous Digital Hierarchy) has been widely used in the field of telecommunications.
  • MSTP is a hotspot in the field of optical communication in recent years.
  • the SDH industry standard "YD/T 1238-2002 SDH-based multi-service transmission node technical requirements" is formulated, which discloses SDH function based on SDH multi-service transmission node, Ethernet service transparent transmission function, and Ethernet Layer 2 switching function.
  • the rapidly growing Internet service has driven the demand for multicast services, and multicast technology has been widely used in data networks, such as broadcast television.
  • the MSTP network generally uses the IGMP SNOOPING technology to control the IP multicast domain between the user terminal equipment access layer and the multicast router aggregation layer.
  • this service involves only one multicast service sender and multiple multicast service receivers.
  • the VOD multicast server (VOD Server) in Figure 1 will use the video stream (Video Stream) multicast service. It is sent to the multicast router (Multicast group member) and then forwarded to the multicast group member (Multicast group member) through the MSTP network. The non-multicast group member cannot be connected to the multicast group. Video stream.
  • IPTV services especially the joining of some new overseas operators, new requirements are imposed on the control of IP multicast routing between multiple multicast routers on MSTP networks.
  • the multicast technology has been determined by MSTP as a technical requirement, the MSTP related industry standards do not give an implementation method.
  • an IP multicast route monitoring system and method are needed to solve the problem that the current MSTP network cannot provide IP multicast routing control between multiple multicast routers.
  • an IP multicast route listening system is proposed. The system includes: a multi-service transmitting device, located on the network side of the multi-service transmitting node, configured to listen and forward the IP multicast routing protocol PIM-SM message; and at least one IP multicast router, and the multi-service transmitting node The network is connected to route the IP multicast routing protocol PIM-SM 4.
  • the multi-service transmission device includes: an update unit, configured to update the multicast router neighbor connection relationship table when receiving the PIM-SM protocol HELLO message; receiving the PIM- In the case of the SM protocol JOIN/PRUNE 4, the IP multicast forwarding table is updated, and the updated IP multicast forwarding table updates the Layer 2 multicast address table in real time; and the message forwarding unit is used for switching at the Layer 2
  • the PIM-SM protocol HELLO packet is forwarded in the VLAN domain, and the IP address of the next hop multicast router in the JOIN/PRUNE packet of the PIM-SM protocol is extracted and found in the multicast router neighbor relationship table.
  • the IP address of the multicast router matching the IP address of the mega-multicast router. If found, the PIM-SM protocol; OIN/PRUNE 4 is forwarded to the multicast router.
  • the #2 layer multicast forwarding table forwards the PIM-SM protocol JOIN/PRUNE packet in the Layer 2 switching VLAN.
  • the multicast router neighbor connection relationship table includes at least one of the following information: a multicast router IP address, a multicast router neighbor port number, and a VLAN ID of the multicast router Layer 2 switching domain.
  • the IP multicast forwarding table includes at least one of the following information: an IP multicast address, a VLAN ID of a Layer 2 switching domain to which the IP multicast address belongs, a JOIN/PRUNE 4 source port list, And each port retention time.
  • the Layer 2 multicast address table includes at least one of the following information: a Layer 2 multicast address, a VLAN ID, and a port list.
  • the multi-service transmission node is an SDH-based multi-service transmission node.
  • an IP multicast route listening method is provided. In the method, the multi-service transmission node network is located between multiple multicast routers, and the method includes the following steps: S302: The multi-service transmission node network monitors the IP multicast routing protocol PIM-SM packet, and updates the multicast.
  • step S302 includes: when receiving the PIM-SM protocol HELLO 4 message, the multi-service transmitting node network updates the multicast router neighbor connection relationship table; and receives the PIM-SM In the case of the protocol JOIN/PRUNE, the IP multicast forwarding table is updated, and the Layer 2 multicast address table is updated in real time according to the updated IP multicast forwarding table.
  • the multicast router neighbor connection relationship table includes at least one of the following information: a multicast router IP address, a multicast router adjacency port number, and a multicast router layer 2 exchange i or a VLAN ID.
  • the IP multicast forwarding table includes at least one of the following information: an IP multicast address, a VLAN ID of a Layer 2 switched domain to which the IP multicast address belongs, a JOIN/PRUNE 4 source port list, And each port retention time.
  • the Layer 2 multicast address table includes at least one of the following information: a Layer 2 multicast address, a VLAN ID, and a port list.
  • the multi-service transport node is an SDH-based multi-service transport node.
  • the MSTP network can perform IP multicast routing control between multiple multicast routers.
  • FIG. 1 is a schematic diagram of a network between a multicast router and a user equipment of an MSTP network
  • FIG. 2 is a block diagram of an IP multicast route monitoring system according to the present invention
  • FIG. 3 is a flowchart of an IP multicast route monitoring method according to the present invention.
  • FIG 4 is a flow chart of a technical solution for listening to IP multicast routing in an MSTP network
  • Figure 5 is a network diagram of an MSTP network between multiple multicast routers.
  • the IP multicast route monitoring system includes: a multi-service transmitting device 202, located on the network side of the multi-service transmitting node, configured to listen and forward the IP multicast routing protocol PIM-SM message; and at least one IP group
  • the broadcast router 204 is connected to the multi-service transport node network for routing the IP multicast routing protocol PIM-SM 4.
  • the multi-service transmitting device 202 includes: an updating unit 2022, configured to update the multicast router neighbor connection relationship table when receiving the PIM-SM protocol HELLO message; and receive the PIM-SM protocol JOIN/PRUNE 4 ⁇ In the case of the text, the IP multicast forwarding table is updated, and the Layer 2 multicast address table is updated in real time according to the updated IP multicast forwarding table; and the 4 ⁇ forwarding unit 2024 is configured to forward the PIM in the Layer 2 switched VLAN domain.
  • the SM protocol HELLO is used to extract the IP address of the next hop multicast router in the JOIN/PRUNE of the PIM-SM protocol, and finds the IP address of the next hop multicast router in the multicast router neighbor relationship table.
  • the PIM-SM protocol JOIN/PRUNE packet is forwarded to the multicast router neighboring port corresponding to the IP address of the multicast router. If not found, the Layer 2 multicast is obtained.
  • the forwarding table forwards the PIM-SM protocol JOIN/PRUNE 4 in the Layer 2 switched VLAN.
  • the multicast router neighbor connection relationship table includes at least one of the following information: a multicast router IP address, a multicast router neighbor port number, and a VLAN ID of the multicast router Layer 2 switching domain.
  • the IP multicast forwarding table includes at least one of the following: an IP multicast address, a VLAN ID of a Layer 2 switched domain to which the IP multicast address belongs, a list of JOIN/PRUNE packet source ports, and a port hold time.
  • the Layer 2 multicast address table includes at least one of the following information: a Layer 2 multicast address, a VLAN ID, and a port list.
  • the multi-service transport node is an SDH-based multi-service transport node. Referring to Figure 3, an IP multicast route snooping method in accordance with the present invention will be described. In this method, a multi-service transport node network is located between multiple multicast routers.
  • the IP multicast route monitoring method includes the following steps: S302: The multi-service transmitting node network monitors the IP multicast routing protocol PIM-SM packet, and updates the multicast router neighbor connection relationship table and IP multicast forwarding. And a Layer 2 multicast address table; and S304, the multi-service transport node network forwards the multicast service packet according to the Layer 2 multicast address table.
  • Step S302 includes: in the case that the PIM-SM protocol HELLO is received, the multi-service transmitting node network updates the multicast router neighbor connection relationship table; and the PIM-SM protocol JOIN/PRUNE message is received.
  • the IP multicast forwarding table is updated, and the Layer 2 multicast address table is updated in real time according to the updated IP multicast forwarding table.
  • the multi-service transport node network forwards the PIM-SM protocol HELLO 4 ⁇ in the Layer 2 switched VLAN domain; in the PIM-SM protocol, the message is JOIN.
  • the multi-service transport node network extracts the IP address of the next-hop multicast router in the PIM-SM protocol JOIN/PRUNE packet, and searches for the next hop group in the multicast router neighbor connection relationship table.
  • the multicast forwarding table forwards the PIM-SM protocol JOIN/PRUNE packets in the Layer 2 switching VLAN.
  • the multicast router neighbor connection relationship table includes at least one of the following information: a multicast router IP address, a multicast router neighbor port number, and a VLAN ID of the multicast router Layer 2 switching domain.
  • the IP multicast forwarding table includes at least one of the following: an IP multicast address, a VLAN ID of a Layer 2 switched domain to which the IP multicast address belongs, a list of JOIN/PRUNE packet source ports, and a port hold time.
  • the Layer 2 multicast address table includes at least one of the following information: a Layer 2 group address, a VLAN ID, and a port list.
  • the multi-service transport node is an SDH-based multi-service transport node. Specifically, a specific embodiment of the IP multicast route interception method will be described with reference to FIGS. 4 and 5. 4 is a flow chart of a technical solution for listening to IP multicast routing in an MSTP network. As shown in FIG.
  • the monitoring process includes the following steps: S402: The MSTP device port receives the PIM-SM protocol message; S404, determines whether the MSTP device port receives the PIM-SM protocol HELL® message; S406, if not After receiving the PIM-SM protocol HELLO packet, it determines whether the MSTP device port receives the PIM-SM protocol JOIN/PRUNE message; S408-S410, if the PIM-SM protocol JOIN/PRUNE 4 message is not received, the MSTP device The Layer 2 multicast address table is updated in real time according to the IP multicast forwarding table.
  • the table entry includes at least a Layer 2 multicast address, a VLAN ID, and a port list, and the MSTP device is based on Layer 2 of the Layer 2 multicast address table.
  • the multicast address, the VLAN ID, and the port list are forwarded to the multicast service.
  • S412-S414 when receiving the PIM-SM protocol HELLO message, update the multicast router neighbor connection relationship table, and The HELLO packet is forwarded in the layer switching VLAN domain;
  • FIG. 5 is a network diagram of an MSTP network between multiple multicast routers. As shown in FIG. 5, an embodiment in which the MR A is used as a service sender and the MR B 1 and the MR B2 are the receivers is used as an example, and the implementation scheme of the present invention for monitoring IP multicast routes in the MSTP network is illustrated. The specific implementation includes the following steps:
  • the MSTP device receives the PIM-SM protocol. After receiving the PIM-SM protocol, the MSTP device performs at least the following processing: When the MSTP network C receives the PIM-SM from ports A, Bl, and B2. When HELLO is in the text, the update multicast router neighbor connection relationship table is as shown in the following table (1): Table (1)
  • the MSTP device ports B1 and B2 receive the PIM-SM protocol JOIN/PRUNE 4, extract the IP multicast address in the message, and update the IP multicast forwarding table as shown in Table (2): (two)
  • the next-hop multicast router address in the received JOIN/PRUNE message is IP-MR-A, and the multicast router neighbor connection relationship table is searched.
  • the neighboring port of the multicast router corresponding to IP_MR-A is Port A.
  • the received JOIN/PRUNE packet is forwarded to the multicast router MR A connected to Port A.
  • MSTP device Updates the Layer 2 multicast address table in the service forwarding chip in real time according to the IP multicast forwarding table, as shown in Table (3): Table (3)
  • the service forwarding chip of the MSTP device forwards the multicast service packet according to the Layer 2 multicast address table.
  • the VOD multicast server sends the video stream multicast service to the multicast router A, and then forwards it to the multicast routers B1 and B2 of the multicast group member through the MSTP network C.
  • the multicast router B3 without the multicast group member cannot receive the multicast router B3.
  • the multicast video stream when the MSTP device port pair receives other PIM-SM protocols, as shown in Table (4), it is required to forward in the Layer 2 switched VLAN domain. In addition, it is also possible to perform the special processing of the PIM-SM protocol type message in Table 3 before forwarding. (Table 4)
  • the core idea of the present invention is to place the MSTP network in accordance with the framework of the MSTP network. Between the multicast routers, in the new network layer, through the monitoring of the IP multicast routing protocol PIM-SM 4, the establishment, modification, and deletion of the IP multicast domain by the MSTP network are completed, thereby implementing the entire IP. The multicast service is forwarded in the IP multicast domain. With the present invention, the MSTP network can perform IP multicast routing control between multiple multicast routers.

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

Abstract

La présente invention concerne un système de surveillance de trajet de multidiffusion IP comportant: un appareil de transport multiservice (202) situé dans un côté réseau de plate-forme de transport multiservice, pour surveiller et transférer des messages PIM-SM de protocole de trajet de multidiffusion IP ; et au moins un routeur multidiffusion IP (204) connecté au réseau de plate-forme de transport multiservice, pour acheminer les messages PIM-SM de protocole de trajet de multidiffusion IP. Grâce à l'invention un réseau MSTP peut effectuer un contrôle de trajet de multidiffusion IP entre une pluralité de routeurs de multidiffusion.
PCT/CN2006/003376 2006-12-12 2006-12-12 Système de surveillance de trajet de multidiffusion ip et procédé associé WO2008071032A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020097013767A KR101279790B1 (ko) 2006-12-12 2006-12-12 Ｉｐ 멀티캐스트 루트 모니터링 시스템 및 방법
PCT/CN2006/003376 WO2008071032A1 (fr) 2006-12-12 2006-12-12 Système de surveillance de trajet de multidiffusion ip et procédé associé

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KR101064728B1 (ko) 2008-12-16 2011-09-14 한국전자통신연구원 멀티캐스트 수신 단말에 연결되는 라우터의 동작 방법
CN113765807A (zh) * 2020-09-29 2021-12-07 北京京东尚科信息技术有限公司 网络流量可视化的方法、装置、系统、及介质
CN114422420A (zh) * 2021-12-29 2022-04-29 中国电信股份有限公司 路由信息处理方法及网络数据管理系统

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CN1863147A (zh) * 2005-09-07 2006-11-15 华为技术有限公司 在虚拟专用局域网业务中实现组播数据流转发的方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101064728B1 (ko) 2008-12-16 2011-09-14 한국전자통신연구원 멀티캐스트 수신 단말에 연결되는 라우터의 동작 방법
CN113765807A (zh) * 2020-09-29 2021-12-07 北京京东尚科信息技术有限公司 网络流量可视化的方法、装置、系统、及介质
CN114422420A (zh) * 2021-12-29 2022-04-29 中国电信股份有限公司 路由信息处理方法及网络数据管理系统

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KR101279790B1 (ko) 2013-06-28

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