CN101645851A - Recombination method for IP fragment messages and device thereof - Google Patents
Recombination method for IP fragment messages and device thereof Download PDFInfo
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- CN101645851A CN101645851A CN200910189954A CN200910189954A CN101645851A CN 101645851 A CN101645851 A CN 101645851A CN 200910189954 A CN200910189954 A CN 200910189954A CN 200910189954 A CN200910189954 A CN 200910189954A CN 101645851 A CN101645851 A CN 101645851A
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- 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]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
Abstract
The invention discloses a method and a system for improving the existing IP recombination process, wherein the IP fragment messages belonging to different VPNs (Virtual Private Networks) are not influenced with each other during recombination by increasing the judgment of the VPNs belonged in the messages for the existing recombination module. The application of the invention can avoid the possibility that IP fragment messages of different VPNs are influenced with each other during recombination, thereby supplementing the description of RFC protocol about IP recombination process, improving the existing IP recombination process, being capable of improving the stability of network device, and improving the transmission quality of IP network. The invention is suitable for IPv4 recombinationand IPv6 recombination, and is independent of the implementation way of VPN.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of recombination method and device of IP fragmentation message.
Background technology
IP is the agreement of core the most in the TCP/IP protocol suite.All TCP, UDP, ICMP and IGMP data are all with IP datagram form transmission, are called the IP message with the data cell of IP protocol encapsulation.The lower-layer protocols of IP agreement is a link layer protocol, for most of link layer protocols, the Frame length that can transmit all has a upper limit, be respectively 1500 and 1492 bytes such as Ethernet and 802.3 pairs of its maximums of length that can transmit, this characteristic of link layer is called MTU, i.e. MTU.
If the IP layer has a data message to need to transmit, and the length of data is also bigger than the MTU of link, the IP layer just need carry out burst to the IP message so, makes the length of each message all be not more than the MTU of link layer, could send message then on link.
At receiving terminal, in order to go back the original message that original sender sends, each IP fragmentation that belongs to same original message that must will receive is recombinated, and reassembles into a complete message and transfers to the upper-layer protocol processing afterwards again.Reorganization is generally finished by destination host, but for general special situation, for example, NAT (network address translation) process need recomputate whole message verification and, intermediate nodes such as router also need fragment message is recombinated.
RFC791 has described the process of the IP message being carried out burst and reorganization.This agreement points out that the IP_ID in the IP head, source IP address, purpose IP address and four fields of protocol number are used to identify each burst that belongs to same initial IP message.If these fields are identical, think that then they are a plurality of messages that become by same message fragment, need reassemble into it message.
Fig. 1 is the basic block diagram of reorganization table
In system initialisation phase, recombination module at first distributes two internal memories in internal memory, and wherein a slice internal memory is used for the reorganization table, and a slice internal memory is used for the collision table of reorganization table correspondence in addition.The reorganization table is used for being kept at the necessary information of follow-up each fragment message of regrouping process, and the information that needs to preserve comprises IP_ID, protocol number, source IP address, purpose IP address.Such data structure is called the reorganization table, and except can preserving above information, the list item of each reorganization table also needs to preserve two pointers, points to the conflict list item of reorganization table respectively, and a data structure that is called " fragment message chained list ".When recombination module is sought the reorganization list item of each fragment message correspondence, IP_ID, protocol number, source IP address, these four values of purpose IP address are carried out Hash, when the Hash result of different messages is identical, just need to use conflict list item (the reorganization list item of conflict).The conflict list item is the same with reorganization table list item, all is kept in the internal memory, and its structure is identical with reorganization table list item structure, in some system realizes, do not distinguish reorganization table list item and conflict list item, therefore in the description of back, the conflict list item directly may be described as reorganization table list item.So-called " fragment message chained list " is meant that the IP fragmentation message of a string same characteristic features that the network equipment is received, so-called same characteristic features are meant that IP_ID, protocol number, source IP address, these four fields of purpose IP address are identical.In fact, in the time of among the IP fragmentation message is received the network equipment, it has been kept in the internal memory of the network equipment, and a plurality of fragment messages that recombination module only is to use " fragment message chained list " will belong to same initial IP message link, to finish the reorganization to message.Reorganization list item noted earlier, conflict list item, fragment message chained list have drawn respectively among the figure.In this reorganization table, reorganization list item 2 and list item n are used, and each list item back also chain be connected to the collision table item, each list item also has a pointed fragment message chained list.
After IP network had been moved for many years, VPN had occurred, and the appearance of VPN has changed a fact, and the Internet has become stereochemical structure by original planar structure, because isolated mutually between the VPN, the main frame in the different VPN can have identical IP address.
Owing to do not carry VPN information in the IP head of IPv4 message, and the appearance of IPv4 is far away early than VPN, so the reorganization flow process of IPv4 message do not consider the VPN factor, and so, the regrouping process of IPv4 message just no longer has completeness.If the host A 1 that belongs to VPN1 and VPN2 respectively is identical with source IP address, purpose IP address, IP_ID, the protocol number of the IP fragmentation message that host A 2 sends out, message arrives after the router R, because the recombination module of router R is not distinguished VPN information, therefore when recombinating, it will think that the fragment message from host A 1 and host A 2 belongs to same initial IP message, just may will recombinate together from the fragment message of main frame A1 and host A 2, what obviously restructure like this is the message of a mistake.Though IPv6 agreement time of occurrence will be later than the IPv4 agreement, the reorganization flow process of IPv6 message still is a content of only having considered IP head itself, does not consider VPN, so the reorganization flow process of IPv6 message also has and the identical problem of IPv4 reorganization flow process.
Summary of the invention
The objective of the invention is, at the present situation of above-mentioned IP recombination method, improve IP reorganization flow process, making needs the IP message of recombinating unaffected each other in the different VPN.
For solving the problems of the technologies described above, the present invention proposes a kind of recombination method of IP fragmentation message, specifically comprise:
Recombination module obtains the VPN sign of fragment message, and in conjunction with the IP header that from fragment message, obtains, calculate a hash index to determine the pairing reorganization list item of this burst message, recombination module is finished comparison, the reorganization of fragment message according to reorganization list item, VPN sign and IP header.
Further, when the pairing reorganization list item of definite this burst message is not used, then VPN sign and IP header are saved in the reorganization table list item, and this burst message is suspended on " the fragment message chained list " of current reorganization list item, wherein, " fragment message chained list " is used for preserving the burst of same original message.
Further, when the pairing reorganization list item of definite this burst message had been used, described relatively was that VPN sign and the IP header that will receive compares with using VPN sign and the IP header preserved in the reorganization list item.
Further, if comparative result is all to mate, this burst message is suspended on " the fragment message chained list " of corresponding reorganization list item.
Further, described reorganization specifically comprises: when " the fragment message chained list " that all is suspended to corresponding reorganization list item when all bursts of original message gone up, with all fragment messages on " the fragment message chained list " of current reorganization list item in order assembly unit finish the reorganization of original message to together.
Further, if comparative result does not match, router judges whether current reorganization list item has the conflict list item.
Further, if also do not conflict list item, illustrate that then current message is first burst that arrives recombination module in the same original message, a conflict of the new distribution of recombination module list item, this collision table item is linked to the current back of looking into the reorganization list item, and the VPN sign and the IP header of current fragment message is saved in this conflict list item.
Further, if the conflict list item has been arranged, then again the VPN that preserves in the VPN of message sign and IP header and the list item that conflicts is identified and the IP header compares,, just current fragment message is kept in " the fragment message chained list " of the conflict list item that matches if can mate; Otherwise just list item of a conflict of distribution newly, and preservation VPN sign and IP header are in newly assigned conflict list item.
Further, described VPN is designated VPN_ID, and described IP header is IP_ID, source IP address, purpose IP address and protocol number.
The present invention also proposes a kind of reconstruction unit of IP fragmentation message, comprising: acquiring unit is used to obtain the VPN sign and the IP header of fragment message; Calculate determining unit, the VPN sign and the IP header that are used for obtaining according to acquiring unit calculate hash index to determine the pairing reorganization list item of fragment message; Relatively recomposition unit is used for carrying out comparison, the assembly unit of fragment message according to calculating determining unit definite reorganization list item and VPN sign, IP header, finishes the reorganization of original message.
The present invention has following beneficial effect: avoided IP fragmentation message mistake and interactional possibility when reorganization in the different VPN, replenished of the description of RFC agreement about IP fragmentation message regrouping process, perfect existing IP reorganization flow process, can improve the stability of the network equipment, improve the transmission quality of IP network.
Description of drawings
Fig. 1 is the basic block diagram of reorganization table.
Fig. 2 is for after using the present invention's improvement, and schematic diagram is handled in the forwarding of fragment message on router in the different VPN.
Fig. 3 is used to realize algorithm flow chart of the present invention among the embodiment.
Fig. 4 is for implementing the recombination module structure chart of this method.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 2 shows and uses after the IP reorganization flow process of the present invention the situation of router device fragment message in handling different VPN.From schematic diagram as can be seen, recombination module is also the same with VRF, logically there is one in each VPN, and in fact recombination module has only one in whole router device, just original recombination module has been carried out change a little, when judging whether fragment message belongs to same original message, 4 fields in comparing IP_ID, source IP address, purpose IP address and protocol number IP head, the VPN_ID that also compares message, has only the message under the same VPN, just might derive from same original message, can recombinate together.
For each fragment message, before being sent to the recombination module processing, router must obtain its affiliated VPN, obtains after the VPN_ID of message, brings recombination module with VPN_ID and uses.Recombination module is when recombinating to message, at first use the VPN_ID pass to recombination module and the IP_ID in the message IP head, source IP address, purpose IP address, protocol number field to calculate the index of message in the reorganization table, navigate to corresponding reorganization list item according to index again.Then, VPN_ID, IP_ID, source IP address, purpose IP address and the protocol number of use message and corresponding 5 values that are buffered in the reorganization list item compare, and when having only all 5 values all identical, just think and have found own affiliated reorganization list item.Find after the reorganization list item under own, to actual message content reorganization operations such as fragment message sort, duplicates, identical with before this regrouping process.VPN_ID is a key of the present invention, and the regrouping process before comparing has increased the comparison of VPN_ID newly among the present invention, guaranteed that the fragment message under the different VPN is independent of each other mutually.
To the specific embodiment of the present invention be described with an embodiment below.
Fig. 3 is the algorithm flow chart of present embodiment, will each step in the algorithm be elaborated below.
In step 410, recombination module is received an IP fragmentation message.
In step 411, router is by the descriptor of current fragment message, obtains the VPN under the message, i.e. the VPN_ID of message, and from the IP head of current fragment message, obtain IP_ID, source IP address, purpose IP address and the protocol number of message.And use these 5 values to calculate a hash index, to determine the pairing reorganization table of this burst message list item.
In step 412, by the hash index that step 411 calculates, navigate to the corresponding list item of reorganization table, judge whether this list item also is in the state that is not used.If this reorganization list item also is not used, illustrate that then current message is the burst of first arrival in the same original message, changes step 420 over to; Otherwise, illustrate that the burst that same original message is arranged arrives, and changes step 430 over to.
In step 420, these 5 values of VPN_ID, IP_ID, source IP address, purpose IP address and protocol number of current message are saved in the reorganization list item, and current message is suspended on " the fragment message chained list " of current reorganization list item, recombination module finishes the handling process of current fragment message.Wherein, " the fragment message chained list " of reorganization list item is used for preserving the burst that same original message has been received.
In step 430, with VPN_ID, IP_ID, source IP address, purpose IP address and the protocol number of message respectively with the reorganization list item in this 5 values of preserving compare, enter step 431 then.
In step 431, the comparative result of determining step 430, if comparative result is all to mate, then the affiliated reorganization list item of current message has been found in explanation, changes step 440 over to; Otherwise, illustrating that the hash index of message is identical with the hash index of current message, the reorganization list item conflicts mutually, changes step 460 over to and searches the conflict list item.
In step 440, current message is suspended on " the fragment message chained list " of current reorganization list item, enter step 441 then.
In step 441, judge whether all bursts of same original message are all here, if all not here, then recombination module finishes the handling process of current message; Otherwise, change step 450 over to.
In step 450, with all fragment messages on " the fragment message chained list " of current reorganization list item in order assembly unit finish regrouping process to together to original message under the current message, recombination module finishes the handling process of current message.
In step 460, judge whether the conflict list item pointer of current reorganization list item is empty.If this pointer is empty, illustrate that then current message is first burst that arrives recombination module in the same original message, changes step 470 over to; Otherwise, illustrate that the burst that same original message is arranged arrives, and changes step 480 over to.
In step 470, newly distribute a conflict list item, and the list item that will conflict receives the back that step 460 is looked into the list item of recombinating, enter step 471.
In step 471, these 5 values of VPN_ID, IP_ID, source IP address, purpose IP address and protocol number of current message are saved in the conflict list item that step 470 distributes, recombination module finishes the handling process of current message.
In step 480, according to the conflict list item pointer of the reorganization list item of being looked in the step 460, navigate to Next conflict list item, enter step 430 then, begin of the new round compare operation of current message with the contents in table that conflicts.
The implementation algorithm that more than is present embodiment is described, and this algorithm all is suitable for IPv4 message and IPv6 message.
Fig. 4 is for implementing the reconstruction unit structure chart of this method
Acquiring unit is used to obtain the VPN sign and the IP header of fragment message;
Calculate determining unit, the VPN sign and the IP header that are used for obtaining according to acquiring unit calculate hash index to determine the pairing reorganization list item of fragment message;
Relatively recomposition unit is used for carrying out comparison, the assembly unit of fragment message according to calculating determining unit definite reorganization list item and VPN sign, IP header, finishes the reorganization of original message.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of recombination method of IP fragmentation message, it is characterized in that: recombination module obtains the VPN sign of fragment message, and in conjunction with the IP header that from fragment message, obtains, calculate a hash index to determine the pairing reorganization list item of this burst message, recombination module is finished comparison, the reorganization of fragment message according to reorganization list item, VPN sign and IP header.
2, the method for claim 1, it is characterized in that: when the pairing reorganization list item of definite this burst message is not used, then VPN sign and IP header are saved in the reorganization table list item, and this burst message is suspended on " the fragment message chained list " of current reorganization list item, wherein, " fragment message chained list " is used for preserving the burst of same original message.
3, the method for claim 1, it is characterized in that: when the pairing reorganization list item of definite this burst message had been used, described relatively was that VPN sign and the IP header that will receive compares with using VPN sign and the IP header preserved in the reorganization list item.
4, method as claimed in claim 3 is characterized in that: if comparative result is suspended to this burst message on " the fragment message chained list " of corresponding reorganization list item for all mating.
5, method as claimed in claim 4, it is characterized in that, described reorganization specifically comprises: when " the fragment message chained list " that all is suspended to corresponding reorganization list item when all bursts of original message gone up, with all fragment messages on " the fragment message chained list " of current reorganization list item in order assembly unit finish the reorganization of original message to together.
6, method as claimed in claim 3 is characterized in that: if comparative result does not match, router judges whether current reorganization list item has the conflict list item.
7, method as claimed in claim 6, it is characterized in that: if also do not conflict list item, illustrate that then current message is first burst that arrives recombination module in the same original message, a conflict of the new distribution of recombination module list item, this collision table item is linked to the current back of looking into the reorganization list item, and the VPN sign and the IP header of current fragment message is saved in this conflict list item.
8, method as claimed in claim 6, it is characterized in that: if the conflict list item has been arranged, then again the VPN that preserves in the VPN of message sign and IP header and the list item that conflicts is identified and the IP header compares, if can mate, just current fragment message is kept in " the fragment message chained list " of the conflict list item that matches; Otherwise just list item of a conflict of distribution newly, and preservation VPN sign and IP header are in newly assigned conflict list item.
9, as each method in the claim 1 to 8, it is characterized in that: described VPN is designated VPN ID, and described IP header is IP ID, source IP address, purpose IP address and protocol number.
10, a kind of reconstruction unit of IP fragmentation message is characterized in that, comprising: acquiring unit is used to obtain the VPN sign and the IP header of fragment message; Calculate determining unit, the VPN sign and the IP header that are used for obtaining according to acquiring unit calculate hash index to determine the pairing reorganization list item of fragment message; Relatively recomposition unit is used for carrying out comparison, the assembly unit of fragment message according to calculating determining unit definite reorganization list item and VPN sign, IP header, finishes the reorganization of original message.
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| CN2009101899540A CN101645851B (en) | 2009-09-03 | 2009-09-03 | Recombination method for IP fragment messages and device thereof |
| PCT/CN2010/072814 WO2011026344A1 (en) | 2009-09-03 | 2010-05-14 | Method and device for reassembling ip fragment datagrams |
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| CN2009101899540A CN101645851B (en) | 2009-09-03 | 2009-09-03 | Recombination method for IP fragment messages and device thereof |
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| WO2011026344A1 (en) * | 2009-09-03 | 2011-03-10 | 中兴通讯股份有限公司 | Method and device for reassembling ip fragment datagrams |
| CN102256182A (en) * | 2011-07-26 | 2011-11-23 | 重庆大唐科技股份有限公司 | RTP (Real-time Transport Protocol)-based video stream fragment framing method |
| CN102811158A (en) * | 2011-06-02 | 2012-12-05 | 中兴通讯股份有限公司 | Data positioning and recombining method and corresponding device |
| CN103023808A (en) * | 2012-12-28 | 2013-04-03 | 南京邮电大学 | Block link list structure based 6lowpan data packet repackaging buffering method |
| CN104348760A (en) * | 2014-10-11 | 2015-02-11 | 北京中创腾锐技术有限公司 | Method for sending IP (Internet Protocol) slices one by one in sequence |
| CN106411791A (en) * | 2016-09-05 | 2017-02-15 | 上海斐讯数据通信技术有限公司 | ICMP fragmented packet reassembly method and forwarding method, controller, and switch |
| CN106941457A (en) * | 2016-01-04 | 2017-07-11 | 普天信息技术有限公司 | The method and device of IP message fragments restructuring based on polycaryon processor |
| CN113098780A (en) * | 2021-02-22 | 2021-07-09 | 网宿科技股份有限公司 | Message processing method of virtual network, electronic device and storage medium |
| CN114448976A (en) * | 2022-03-11 | 2022-05-06 | 中国工商银行股份有限公司 | Network message assembling method, device, equipment, medium and program product |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6714985B1 (en) * | 2000-04-28 | 2004-03-30 | Cisco Technology, Inc. | Method and apparatus for efficiently reassembling fragments received at an intermediate station in a computer network |
| CN100338923C (en) * | 2002-10-31 | 2007-09-19 | 中兴通讯股份有限公司 | Method of realizing IP message partition and recombination based on network processor |
| CN100423512C (en) * | 2005-06-17 | 2008-10-01 | 杭州华三通信技术有限公司 | Control method for using resource of network address transition equipment of virtual proviate network method for controlling usage of NAT equipment resources of VPN |
| CN100571197C (en) * | 2005-11-03 | 2009-12-16 | 中兴通讯股份有限公司 | A kind of provider's edge device and using method thereof of combining network address conversion |
| CN100505673C (en) * | 2006-09-15 | 2009-06-24 | 华为数字技术有限公司 | Method and system for detecting path maximal transmission unit |
| CN101645851B (en) * | 2009-09-03 | 2012-07-18 | 中兴通讯股份有限公司 | Recombination method for IP fragment messages and device thereof |
-
2009
- 2009-09-03 CN CN2009101899540A patent/CN101645851B/en active Active
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2010
- 2010-05-14 WO PCT/CN2010/072814 patent/WO2011026344A1/en active Application Filing
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| WO2011026344A1 (en) * | 2009-09-03 | 2011-03-10 | 中兴通讯股份有限公司 | Method and device for reassembling ip fragment datagrams |
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| CN102256182A (en) * | 2011-07-26 | 2011-11-23 | 重庆大唐科技股份有限公司 | RTP (Real-time Transport Protocol)-based video stream fragment framing method |
| CN103023808A (en) * | 2012-12-28 | 2013-04-03 | 南京邮电大学 | Block link list structure based 6lowpan data packet repackaging buffering method |
| CN103023808B (en) * | 2012-12-28 | 2015-06-03 | 南京邮电大学 | Block link list structure based 6lowpan data packet repackaging buffering method |
| CN104348760A (en) * | 2014-10-11 | 2015-02-11 | 北京中创腾锐技术有限公司 | Method for sending IP (Internet Protocol) slices one by one in sequence |
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| WO2011026344A1 (en) | 2011-03-10 |
| CN101645851B (en) | 2012-07-18 |
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