CN102882790A - IPv6 (Internet Protocol version 6) real-time dataflow processing method - Google Patents
IPv6 (Internet Protocol version 6) real-time dataflow processing method Download PDFInfo
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Abstract
The invention relates to an IPv6 (Internet Protocol version 6) real-time dataflow processing method. The method comprises the following steps of: sending a connection request to a server and establishing the transmission of a data packet by a client side, and forwarding dataflow in the data packet by a router; 2) collecting a source IPv6 address, a target IPv6 address and a flow tag of the dataflow by the router and looking up and/or establishing flow nodes in a flow processing table; and 3) analyzing the routing strategy of the data packet in the flow processing table, forwarding the data packet and finishing processing. According to a flow lookup processing table during the forwarding of the router, the flow processing table of a backbone network router is much smaller than a routing table, and the lookup efficiency is high. IPSec (Internet Protocol Security) load of an IPv6 is encapsulated in an end-to-end mode, loaded data is encrypted but an IPv6 packet header is not encrypted. The real-time dataflow processing technology supports IPSec properties.
Description
Technical field
The present invention relates to data communication technology field, particularly Next Generation Internet IPv6(IPv6, Internet Protocol version 6 international agreement versions) processing method of real time data, belong to internet arena.
Background technology
Along with the fast development of the Internet, IPv4(IPv4, Internet Protocol version4 international agreement version) many deficiencies highlight gradually: the problems such as address space is not enough, routing table quantity is huge, fail safe; Since the huge address space of IPv6, the network configuration of stratification, to the support of mobility and End-to-End Security, and newly-increased stream label function, make IPv6 become the certainty of future network development.
The advantage of IPv6 is as follows: 1) the IPv6 address size is 128, and IPv6 has larger address space.Regulation IP address size is 32 among the IPv4, and the maximum address number is 2^32; 2) IP header form flexibly.Use the extended head of a series of set forms to replace the Option Field of variable-length among the IPV4.The appearance mode of option part also changes to some extent among the IPV6, makes router can simply pass by option and be left intact, and has accelerated message processing speed; 3) IPv6 has simplified the header form, and field only has 8, accelerates message repeating, has improved throughput; 4) improve fail safe.Authentication and the right of privacy are the key characteristics of IPV6; 5) support more COS.
An important improvement of in the design of IPv6 packet header former IPv4 packet header being done shifts out IPv6 packet header with all Optional Fields exactly, places extension header.Because except Hop-by-Hop option extension head, other extension header are not checked by the transfer router or process, so just can improve the performance that router is processed the IPv6 grouping that comprises option.A common typical IPv6 bag does not have extension header.Only when needs router or destination node are done some special processing, just add one or more extension header by transmit leg.Different from IPv4, IPv6 extension header length is any, is not subjected to 40 byte limit so that expand newly-increased option in the future, this feature add option processing mode so that the IPv6 option can be real utilization.But in order to improve the performance of Treatment Options head and transport layer protocol, extension header is the integral multiple of 8 byte lengths always.At present, defined following 6 IPv6 extension header among the RFC 2460: Hop-by-Hop(is the section of jumping one by one) option packet header, option packet header, destination, route option head, burst option head, AH(checking) option head and ESP(ESP) the option head.The most remarkable characteristic of IPv6 is newly-increased stream label territory in packet header, for the real time data bag is paid and Qos is specific provides support; The definition of RFC 2460 convection current: stream is the packet sequence that mails to the specific purpose node from particular source node, and source node wishes that intermediate router can carry out special processing to packet sequence.Source node can use in the IPv6 packet header customizing messages of 20 stream label flag data bag, and source node request IPv6 router carries out special processing to these packets.But at present stream label is in the processing that the not every equipment of experimental stage and router are all supported convection tags, has limited the application of stream label.
Summary of the invention
The present invention is directed to the IPv6 real time data and provide a kind of based on the efficient of stream label and support security feature processing method, its step comprises:
1) user end to server sends connection request and sets up data packet transmission, and data flow is transmitted by router in the described packet;
2) described router extracts this datastream source IPv6 address, purpose IPv6 address and stream label and search and/or set up the stream node in the stream processing list;
3) in described stream processing list, parse the routing policy of described packet, packet is transmitted, finish processing.
Set up stream node step in the described stream processing list as follows:
1) when first packet of flow data arrives router, router creates Hash stream node based on IPv6 address, source, purpose IPv6 address, the stream label of these data;
2) go out described packet to next forwarding router or next routing policy of destination node according to scaling option header parsing in IPv6 address, source, purpose IPv6 address, stream label and the IPv6 bag of this described packet;
3) described Hash stream node is added the processing list that becomes a mandarin, set up simultaneously the corresponding relation of this stream node and routing policy.
Described routing policy comprises: next hop address, transfer that interface, Forwarding Delay, Qos are specific, bandwidth reserved and security strategy.
Described packet is divided into flow data and non-flow data, and described flow data forward process is searched the stream processing list, and described non-flow data forward process searches the RIB routing table and/or FIB transmits.
Stream node in the corresponding stream of described each packet processing list, all packets of same data flow have identical routing forwarding strategy.
According to forwarding routing policy corresponding to stream node that finds packet is carried out forward process when searching the stream node in the described stream processing list, do not search RIB routing table and FIB and transmit, also do not resolve this package forward routing policy.
The node that described IPv6 network is all and router device are all supported the processing of convection tags.
Described data flow is by datastream source IPv6 address, purpose IPv6 address and stream label tlv triple sign, and its flow label values of packet that does not belong to any stream is 0.
The scope of described flow label values is between 1-0xFFFFF, and packet has identical flow label values in the data flow link of same client.
Described server is that video server is responsible for the stream label distribution, and described client data stream connection request is distributed stream label.
Beneficial effect of the present invention
1. look into the stream processing list when transmitting according to router, will be far smaller than routing table for backbone network router stream processing list, search efficiency is high; All packets are done identical routing policy forward process in the stream, do not need each to wrap respectively dissection process and obtain routing policy, more can the Effective Raise forward efficiency.
2 support the ipsec security characteristic.Because the IPv6 address, tuple source of mark stream, purpose IPv6 address, stream label are all in IPv6 packet header, end-to-end pattern for the encapsulation of the safe load of IPSec, the load data of IPv6 encrypts but IPv6 packet header is not encrypt, and then the real-time stream treatment technology is to support the ipsec security characteristic among the present invention.
Description of drawings
Fig. 1 is ipv6 header and stream label schematic diagram in the IPv6 real time data method for stream processing of the present invention;
Fig. 2 is IPv6 real time video data flow diagram among IPv6 real time data method for stream processing one embodiment of the present invention;
Fig. 3 is IPv6 stream processing list storage organization schematic diagram in the IPv6 real time data method for stream processing of the present invention;
Fig. 4 is the forward process schematic flow sheet of flow data in the IPv6 real time data method for stream processing of the present invention;
Fig. 5 is video server method for stream processing concrete operations scene schematic diagram among IPv6 real time data method for stream processing one embodiment of the present invention.
Embodiment
The present invention is directed to IPv6 stream label characteristic, real time video data is adopted based on the processing method of the highly effective and safe of IPv6 address, source, purpose IPv6 address, stream label.The basis of the technology of the present invention is: the node that the IPv6 network Development is all and router device are all supported the processing of convection tags.
The stream label characteristic: a stream makes up unique identification by source address and non-zero stream label; Its flow label values of packet that does not belong to any stream is 0; Stream label is distributed by source node, the random value between the scope 1 to 0xFFFFF, the uniqueness of assurance stream label and ageing during source node distribution flow label; All packets of same flow have identical source address, destination address and stream label, and the package forward in the intermediate router convection current has identical routing policy when processing.The packet that does not belong to any stream refers to common IPv6 data, non real-time flow data.
1 stream is processed tuple
Stream based on IPv6 address, source, purpose IPv6 address, stream label is processed tuple, specific data stream of this tlv triple uniquely tagged.
2 stream processing lists
The stream processing list flows processing list and RIB (routing table), FIB (transmitting) peer based on IPv6 address, source, purpose IPv6 address, stream label Hash memory mechanism, and router instructs the forwarding of flow data by searching the stream processing list.
The establishment of stream processing list: when first packet of stream arrives router, router creates Hash stream node based on the IPv6 address, source of these data, purpose IPv6 address, stream label, simultaneously according to source address, destination address, stream label, the IPv6 of this packet wrap each scaling option header parsing go out this packet to the next hop address of next forwarding router or destination node, transfer the routing policies such as interface, Forwarding Delay, Qos are specific, security strategy; The stream node is added the processing list that becomes a mandarin, set up simultaneously the corresponding relation of this stream node and routing policy.
The forwarding lookup stream processing list of 3 flow datas
Stream processing list and RIB(routing table) the together forwarding of guide data bag of FIB (transmitting), the forward process of flow data is searched the stream processing list, non-flow data forward process is searched the RIB(routing table) and FIB (transmitting).
At first check the flow label field of packet during the router forward process, if stream label non-zero then use IPv6 address, source, purpose IPv6 address, stream label to remove to search the stream processing list, do forward process according to the corresponding routing policy of transmitting of the stream node that finds, no longer search the RIB(routing table) and FIB (transmitting), do not need to resolve the forwarding routing policy of this packet yet; First packet for flow data is searched in the stream processing list less than the stream node, then use IPv6 address, source, purpose IPv6 address, stream label to create stream Hash node and add the processing list that becomes a mandarin, resolve simultaneously this packet and obtain the corresponding relation that the routing forwarding strategy is set up this stream node and routing forwarding strategy, a because stream node in the corresponding stream of all packets processing list of stream, the corresponding specific routing forwarding strategy of stream node, all packets of same flow have identical routing forwarding strategy.
The below further specifies the present invention in conjunction with Figure of description by specific embodiment take video data as example.
1) distribution of stream label
The video server end is responsible for the distribution of stream label, for client video connection request distributes stream label.Customer end A is initiated the video connection request to server, connects to be established to connect from video request to terminate as a complete stream; Video server is the identical stream label of all allocation of packets of video flowing for this reason.
Video server IPv6 address 2001:da8:215:4030::120/64
The IPv6 address 2001:da8:250:180::1/64 of customer end A
Stream label: 43283
Ipv6 header and stream label schematic diagram in the IPv6 real time data method for stream processing of the present invention as shown in Figure 1.
2) foundation of stream processing list
The foundation of stream processing list is in router side, and router is responsible for flowing foundation and the maintenance of processing list.
Video server is to the video stream data of customer end A, and the forwarding plane of router is checked IPv6 packet header stream label, and the stream label non-zero is being searched the stream processing list; Stream label is that zero data are being searched RIB (routing table) and FIB (transmitting) guidance forwarding.IPv6 real time video data flow diagram among IPv6 real time data method for stream processing one embodiment of the present invention as shown in Figure 2.The router forwarding plane is at first checked the flow label field of packet, if effectively then use IPv6 address, source, purpose IPv6 address, stream label to remove to search the stream processing list, do forward process according to the stream node that finds corresponding specific routing policy on router R; First packet for flow data is searched in the stream processing list less than the stream node, then create the stream node and add the processing list that becomes a mandarin based on stream label, resolve simultaneously this data acquisition routing forwarding strategy and set up the corresponding relation of this stream node and characteristic routing forwarding strategy, guarantee that all data in the same flow are done identical forward process; Flow data is searched the stream processing list and is replaced searching routing table and transmitting.
Mark stream node tlv triple in the video stream data stream processing list:
IPv6 address, video server IPv6(source): 2001:da8:215:4030::120/64
The IPv6 address of customer end A (purpose IPv6 address): 2001:da8:250:180::1/64
Stream label: 43283
Hash algorithm: XOR purpose IPv6 address, IPv6 address, source XOR stream label
The storage organization of stream processing list is IPv6 stream processing list storage organization schematic diagram in the IPv6 real time data method for stream processing of the present invention as shown in Figure 3.
Video server arrives router R1 to the video stream data of customer end A, router R1 forwarding plane is searched packet IPv6 packet header flow label field, finds that stream label is 43283 and uses IPv6 address, source 2001:da8:215:4030::120/64, purpose IPv6 address 2001:da8:250:180::1/64 and stream label 43283 to search the stream processing list.First packet of video flowing is searched the stream processing list and be can not find out stream node corresponding to this stream, then use IPv6 address, source, purpose IPv6 address, the stream label tlv triple of this video flowing to create stream Hash node, the scaling option head of resolving simultaneously this packet IPv6 packet header obtains the forwarding next-hop IP v6 address of this packet, transfers the routing policies such as interface, Forwarding Delay, Qos characteristic, fail safe, and set up the corresponding relation that this flows Hash node and routing forwarding strategy, add the processing list that becomes a mandarin creating stream Hash node.The packet of video flowing (non-first packet) arrives router, and the router forwarding plane is checked packet IPv6 packet header discovery stream label non-zero, then searches the stream processing list, instructs the forwarding of this packet according to forwarding strategy corresponding to stream node that finds.
Router side data retransmission flow process is IPv6 stream processing list storage organization schematic diagram in the IPv6 real time data method for stream processing of the present invention as shown in Figure 4.Take video stream data as example, at first be responsible for the distribution of stream label by the video server end; The unique and various flows label of primary video stream link distribution for each client between the scope 1-0xFFFFF of stream label, guarantees the ageing of stream label simultaneously, and same client primary video links all packets and has identical stream label.If effectively then use IPv6 address, source, purpose IPv6 address, stream label to remove to search the stream processing list, do forward process according to the specific routing policy that the stream node that finds is corresponding;
First packet for flow data is searched in the stream processing list less than the stream node, then create the stream node and add the processing list that becomes a mandarin based on stream label, resolve simultaneously this data acquisition routing forwarding strategy and set up the corresponding relation of this stream node and characteristic routing forwarding strategy, guarantee that all data in the same flow are done identical forward process; Flow data is searched the stream processing list and is replaced searching routing table and transmitting.
Video server method for stream processing concrete operations scene schematic diagram among IPv6 real time data method for stream processing one embodiment of the present invention as shown in Figure 5.
IPv6 video server: for client provides video flowing, as the source of video flowing; The request of customer in response end is responsible for each video flowing distribution flow label.
Router: the forwarding of video stream data.Create and safeguard the stream processing list.
Client: initiate video request to video server, as the destination of video stream data.
For example: video server IPv6 address: 2001:da8:215:4030::120/64
The IPv6 address of customer end A: 2001:da8:250:180::1/64
The primary video of client and server connects stream, and server connects the IPv6 stream label that stream distributes for this video: 43283
The tlv triple of this time of mark video flowing: IPv6 address, source 2001:da8:215:4030::120/64, purpose IPv6 address 2001:da8:250:180::1/64, stream label 43283.
Claims (10)
1. IPv6 real time data method for stream processing, its step comprises:
1) user end to server sends connection request and sets up data packet transmission, and data flow is transmitted by router in the described packet;
2) described router extracts this datastream source IPv6 address, purpose IPv6 address and stream label and search and/or set up the stream node in the stream processing list;
3) in described stream processing list, parse the routing policy of described packet, packet is transmitted, finish processing.
2. IPv6 real time data method for stream processing as claimed in claim 1 is characterized in that, sets up stream node step in the described stream processing list as follows:
1) when first packet of flow data arrives router, router creates Hash stream node based on IPv6 address, source, purpose IPv6 address, the stream label of these data;
2) go out described packet to next forwarding router or next routing policy of destination node according to scaling option header parsing in IPv6 address, source, purpose IPv6 address, stream label and the IPv6 bag of this described packet;
3) described Hash stream node is added the processing list that becomes a mandarin, set up simultaneously the corresponding relation of this stream node and routing policy.
3. IPv6 real time data method for stream processing as claimed in claim 1 or 2 is characterized in that, described routing policy comprises: next hop address, transfer that interface, Forwarding Delay, Qos are specific, bandwidth reserved and security strategy.
4. IPv6 real time data method for stream processing as claimed in claim 1 or 2, it is characterized in that, described packet is divided into flow data and non-flow data, and described flow data forward process is searched the stream processing list, and described non-flow data forward process searches the RIB routing table and/or FIB transmits.
5. IPv6 real time data method for stream processing as claimed in claim 1 is characterized in that, stream node in the corresponding stream of described each packet processing list, and all packets of same data flow have identical routing forwarding strategy.
6. IPv6 real time data method for stream processing as claimed in claim 1, it is characterized in that, according to forwarding routing policy corresponding to stream node that finds packet is carried out forward process when searching the stream node in the described stream processing list, do not search RIB routing table and FIB and transmit, do not resolve this package forward routing policy yet.
7. IPv6 real time data method for stream processing as claimed in claim 1 is characterized in that, the node that described IPv6 network is all and router device are all supported the processing of convection tags.
8. IPv6 real time data method for stream processing as claimed in claim 1 is characterized in that, described data flow is by datastream source IPv6 address, purpose IPv6 address and stream label tlv triple sign, and its flow label values of packet that does not belong to any stream is 0.
9. such as claim 1 or 8 described IPv6 real time data method for stream processing, it is characterized in that, the scope of described flow label values is between 1-0xFFFFF, and packet has identical flow label values in the data flow link of same client.
10. IPv6 real time data method for stream processing as claimed in claim 1 is characterized in that, described server is that video server is responsible for the stream label distribution, and described client data stream connection request is distributed stream label.
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| CN107623645A (en) * | 2017-09-07 | 2018-01-23 | 国网辽宁省电力有限公司 | A kind of power system Real Data Exchangs system based on forwarding data flow |
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| CN105792289B (en) * | 2014-12-23 | 2019-06-25 | 中国移动通信集团公司 | A kind of data transmission method, interdependent node and system |
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| CN107623645A (en) * | 2017-09-07 | 2018-01-23 | 国网辽宁省电力有限公司 | A kind of power system Real Data Exchangs system based on forwarding data flow |
| CN107623645B (en) * | 2017-09-07 | 2021-04-27 | 国网辽宁省电力有限公司 | Real-time data exchange system of power system based on data stream forwarding |
| CN107948202B (en) * | 2017-12-29 | 2020-10-02 | 中国电力科学研究院有限公司 | Data transmission method and data transmission system based on IPv6 |
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| CN109039919A (en) * | 2018-10-11 | 2018-12-18 | 平安科技（深圳）有限公司 | Forward-path determines method, apparatus, system, computer equipment and storage medium |
| CN109039919B (en) * | 2018-10-11 | 2021-09-21 | 平安科技（深圳）有限公司 | Forwarding path determining method, device, system, computer equipment and storage medium |
| CN112243139A (en) * | 2019-07-17 | 2021-01-19 | 广州朗国电子科技有限公司 | Program distribution synchronization method and system of multimedia terminal |
| CN112243139B (en) * | 2019-07-17 | 2021-08-10 | 广州朗国电子科技有限公司 | Program distribution synchronization method and system of multimedia terminal |
| CN110691074A (en) * | 2019-09-20 | 2020-01-14 | 西安瑞思凯微电子科技有限公司 | IPv6 data encryption method and IPv6 data decryption method |
| CN112036909A (en) * | 2020-08-25 | 2020-12-04 | 重庆邮电大学 | Product information tracing system and method based on IPv6 virtual connection |
| CN114449363A (en) * | 2022-01-28 | 2022-05-06 | 下一代互联网关键技术和评测北京市工程研究中心有限公司 | IPv 6-based encodable and traceable digital object control method |
| CN114449363B (en) * | 2022-01-28 | 2023-08-15 | 下一代互联网关键技术和评测北京市工程研究中心有限公司 | IPv 6-based digital object management and control method capable of coding and tracing |
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Application publication date: 20130116 |