CN112383475A - Cross-domain video data forwarding method - Google Patents
Cross-domain video data forwarding method Download PDFInfo
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- CN112383475A CN112383475A CN202011376016.4A CN202011376016A CN112383475A CN 112383475 A CN112383475 A CN 112383475A CN 202011376016 A CN202011376016 A CN 202011376016A CN 112383475 A CN112383475 A CN 112383475A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- ABEXEQSGABRUHS-UHFFFAOYSA-N 16-methylheptadecyl 16-methylheptadecanoate Chemical compound CC(C)CCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCC(C)C ABEXEQSGABRUHS-UHFFFAOYSA-N 0.000 claims description 3
- 241000764238 Isis Species 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000005417 image-selected in vivo spectroscopy Methods 0.000 claims description 3
- 238000012739 integrated shape imaging system Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- 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
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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- 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
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- 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
- H04L45/48—Routing tree calculation
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- 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
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1013—Network architectures, gateways, control or user entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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Abstract
本发明公开了一种跨域的视频数据转发方法，涉及了一种视频数据转发方法，尤其是一种跨域的视频数据转发方法，包括AS1的RP路由器和AS2的RP路由器，在所述AS1的RP路由器和所述AS2的RP路由器之间建立一条专线电路，交换AS1域和AS2域之间的视频数据。本发明通过建立一种跨域的视频数据转发方法，高效率的对多个自治域之间视频节目进行转发。
The invention discloses a cross-domain video data forwarding method, and relates to a video data forwarding method, in particular to a cross-domain video data forwarding method, comprising an RP router of AS1 and an RP router of AS2. A dedicated circuit is established between the RP router of the AS2 and the RP router of the AS2 to exchange video data between the AS1 domain and the AS2 domain. By establishing a cross-domain video data forwarding method, the present invention forwards video programs between multiple autonomous domains efficiently.
Description
Technical Field
The invention relates to a video data forwarding method, in particular to a cross-domain video data forwarding method.
Background
The method comprises the steps of obtaining a video service of an operator (ISP) network, obtaining a video service of the ISP network, and carrying out real-time expansion on the network, wherein the video service of the ISP network is obtained by the video service of the ISP network, and the video service of the ISP network is obtained by the video service of the ISP network.
By adopting the multicast technology, the network flow can be effectively reduced, and the multicast is rapidly and quickly deployed between one autonomous domain. The geographical locations of network users are widely distributed, and often are in different autonomous domains (AS), different autonomous domains are managed by different operators, the management rules and operation guidance of different operators are different, and multiple operators are difficult to implement consistent multicast configuration rules to send data, so a method for flexibly and efficiently sending video data among operators is urgently needed to be found.
Disclosure of Invention
Technical problem to be solved by the invention
The invention aims to provide a cross-domain video data forwarding method to solve the problems in the background technology, such AS wide geographical position distribution of network users, often in different autonomous domains (AS), different autonomous domains managed by different operators, different management rules and operation directions of different operators, difficulty in implementing consistent multicast configuration rules by multiple operators to send data, and urgent need to find a method for flexibly and efficiently sending video data among operators.
Technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a cross-domain video data forwarding method comprises an RP router of an AS1 and an RP router of an AS2, wherein a private line circuit is established between the RP router of the AS1 and the RP router of the AS2, and video data between an AS1 domain and an AS2 domain are exchanged.
Preferably, the video server comprises a video server of AS1 and a video server of AS2, the AS2 domain requires n programs of the AS1 domain, and the video server of AS1 sends the n program data to the RP router of AS2 in a unicast mode through the RP router of AS 1; next, the RP router of the AS2 sends the program data to the video server of the AS 2.
Preferably, a multicast tree is included, and if the users in the AS1 domain want to watch these n programs, one multicast tree is also established in the AS1 domain to send the programs to the relevant users.
Preferably, configuration information is required on the RP router of the AS1 and the RP router of the AS2, and a multicast tree must be established through the RP of the AS for viewing video programs of other AS domains, and a terminal of one AS can only access all programs of the authorized other AS.
Preferably, routers in AS1 domain and routers in AS2 domain configure OSPF protocol or ISIS protocol AS IGP protocol for communication, and routers in AS1 domain and routers in AS2 domain configure pim-sm or pim-dm multicast routing protocol.
Preferably, the AS1 access router and the access router in the AS2 domain configure an IGMP routing protocol, the RP router of the AS1 and the RP router of the AS2 configure policy routing, and send program information required by the other party in real time, and the core router of the AS1 and the core router of the AS2 perform mutual access by configuring an EBGP protocol.
Preferably, the AS1 and the AS2 open a DHCP and configuration address pool, allocate IP addresses to the users, and the users access the video server through the B/S mode to view video services.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: the invention efficiently forwards the video programs among a plurality of autonomous domains by establishing a cross-domain video data forwarding method.
Drawings
FIG. 1 is a schematic diagram of cross-domain multicast video data transmission according to the present invention;
fig. 2 is a topology diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, shall fall within the protection scope of the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a cross-domain video data forwarding method,
according to the embodiment, the problem that the number of users in a network is uncertain is solved in time by the IP multicast technology. The multicast information sender (i.e. multicast source) only sends information once, and establishes tree-shaped route for multicast data packet by means of multicast route protocol, and the transmitted information begins to be copied and distributed at the fork road junction as far as possible.
The basic organization unit of multicast is a multicast group, the multicast group has a unique IP multicast identifier, a receiving terminal can join or quit the multicast group, and the terminal which joins the multicast group has the authority to receive the data sent to the multicast group. The increase in the number of users does not significantly increase the load on the network compared to unicast techniques.
For cross-domain video program transmission, an operator needs to uniformly deploy an MSDP protocol on a network device to solve the problem, and after the MSDP protocol is deployed, video data can be transmitted between two ASs through multicast, for example: when three users in AS1 and four users in AS2 watch one video program of AS1 at the same time, the specific transmission is shown in fig. 1:
when the user in the AS1 watches the video program in the AS1, the user watching the video and the related network device join the multicast tree, the video data is sent to the user according to the multicast tree, and the data copy occurs only at the branch node of the multicast tree. When a user in AS2 views a video program in AS1, the video program in AS1 must be forwarded to an RP (rendezvous point) router of AS2, and then an associated multicast tree is established for transmission to the AS
First, a dedicated circuit is established between RP routers of two ASs to exchange video data between two AS domains, for example: the AS2 domain needs n programs of the AS1 domain, and the video server of the AS1 sends the n program data to the RP router of the AS2 in a unicast mode through the RP router of the AS 1; next, the RP router of AS2 sends the program data to the video server of AS 2. Then if the AS2 domain has no users to watch these n programs, these n programs will be saved on the video server of AS2 for the users to watch on demand in the future. If the AS2 domain has users to watch these n programs, the video server of AS2 immediately establishes a multicast tree to forward the data to the users through the RP router of AS 2.
If the user in the AS1 domain wants to watch these n programs, a multicast tree is also established in the AS1 domain to deliver the programs to the relevant users. For example: when three users in AS1 and four users in AS2 watch one video program of AS1 at the same time, 2 multicast trees are established, AS shown in fig. 1:
at the moment, operators only need to configure information on respective RPs, so that the working efficiency is greatly improved; the multicast video data is sent through a special line, so that the safety and the robustness are guaranteed; the multicast tree must be established through the RP of the AS when watching the video programs of other AS domains, and the transmission path is optimal; the terminal of one AS can only access all programs of the other authorized ASs, thereby avoiding business disputes.
The specific implementation topological diagram is shown in fig. 2, the routers in the AS1 and the AS2 are configured with OSPF protocol or ISIS protocol AS IGP protocol for communication; configuring a pim-sm or pim-dm multicast routing protocol by routers in AS1 and AS2 domains; the access routers in AS1 and AS2 domains configure IGMP routing protocols; RP routers of AS1 and AS2 domains configure policy routing and send program information needed by the other party in real time; the core routers of AS1 and AS2 are in mutual access by configuring the EBGP protocol. The AS1 and AS2 open DHCP and configure address pools to assign IP addresses to each user. And the user accesses the video server to watch the video service through the B/S mode.
After the video system is established, the bandwidth utilization rate of the trunk channel and the time delay, jitter and packet loss rate of the user ping video server are all normal (2 hours per selection) within the randomly selected range of 300 sample times, which is specifically shown in table 1:
TABLE 1 test Key indicators
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (7)
1. A cross-domain video data forwarding method is characterized in that: the system comprises an RP router of an AS1 and an RP router of an AS2, wherein a private line circuit is established between the RP router of the AS1 and the RP router of the AS2, and video data between an AS1 domain and an AS2 domain are exchanged.
2. The cross-domain video data forwarding method of claim 1, wherein: the video server comprises a video server of an AS1 and a video server of an AS2, wherein the AS2 domain needs n programs of the AS1 domain, and the video server of the AS1 sends the n program data to an RP router of the AS2 in a unicast mode through an RP router of the AS 1; next, the RP router of the AS2 sends the program data to the video server of the AS 2.
3. The cross-domain video data forwarding method of claim 2, wherein: including a multicast tree, if the users in the AS1 domain want to watch these n programs, the AS1 domain will also establish a multicast tree to deliver the programs to the relevant users.
4. The cross-domain video data forwarding method of claim 3, wherein:
configuration information is needed on the RP router of the AS1 and the RP router of the AS2, a multicast tree must be established through the RP of the AS for watching video programs of other AS domains, and a terminal of one AS can only access all programs of the authorized other AS.
5. The cross-domain video data forwarding method of claim 1, wherein: the routers in the AS1 domain and the routers in the AS2 domain are configured with OSPF protocol or ISIS protocol to act AS IGP protocol for communication, and the routers in the AS1 domain and the routers in the AS2 domain are configured with pim-sm or pim-dm multicast routing protocol.
6. The cross-domain video data forwarding method of claim 1, wherein: an access router of AS1 and an access router in AS2 domain configure IGMP routing protocol, an RP router of AS1 and an RP router of AS2 configure policy routing and send program information required by the opposite party in real time, and a core router of AS1 and a core router of AS2 carry out mutual access by configuring EBGP protocol.
7. The cross-domain video data forwarding method of claim 1, wherein: AS1 and AS2 open DHCP and configure address pools, allocate IP addresses to users, and users access video servers to watch video services through the B/S mode.
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| CN202011376016.4A CN112383475A (en) | 2020-12-01 | 2020-12-01 | Cross-domain video data forwarding method |
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| CN107769995A (en) * | 2017-10-23 | 2018-03-06 | 中国联合网络通信集团有限公司 | A kind of service feature monitoring method, apparatus and system |
| US20200099658A1 (en) * | 2017-05-31 | 2020-03-26 | Crypto4A Technologies Inc. | Integrated multi-level or cross-domain network security management appliance, platform and system, and remote management method and system therefor |
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2020
- 2020-12-01 CN CN202011376016.4A patent/CN112383475A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| JP2008227848A (en) * | 2007-03-12 | 2008-09-25 | Nippon Telegr & Teleph Corp <Ntt> | ROUTING DEVICE, ROUTING INFORMATION EXCHANGE METHOD, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM |
| CN101483638A (en) * | 2008-01-10 | 2009-07-15 | 华为技术有限公司 | Method, system and apparatus for applying label |
| CN104410917A (en) * | 2014-09-16 | 2015-03-11 | 东方有线网络有限公司 | Realization method for cable interactive television cross-domain video service connection system |
| CN105553810A (en) * | 2015-12-14 | 2016-05-04 | 中国联合网络通信集团有限公司 | Method and device for forwarding special line service packet |
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| US20200099658A1 (en) * | 2017-05-31 | 2020-03-26 | Crypto4A Technologies Inc. | Integrated multi-level or cross-domain network security management appliance, platform and system, and remote management method and system therefor |
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Application publication date: 20210219 |