WO2011153832A1 - 一种交换路由探寻方法、系统及设备 - Google Patents
一种交换路由探寻方法、系统及设备 Download PDFInfo
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- WO2011153832A1 WO2011153832A1 PCT/CN2011/070246 CN2011070246W WO2011153832A1 WO 2011153832 A1 WO2011153832 A1 WO 2011153832A1 CN 2011070246 W CN2011070246 W CN 2011070246W WO 2011153832 A1 WO2011153832 A1 WO 2011153832A1
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- WIPO (PCT)
- Prior art keywords
- route discovery
- switching device
- source node
- node
- packet
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 26
- 239000000523 sample Substances 0.000 claims description 14
- 239000000284 extract Substances 0.000 claims description 5
- 101100161473 Arabidopsis thaliana ABCB25 gene Proteins 0.000 description 20
- 101100096893 Mus musculus Sult2a1 gene Proteins 0.000 description 20
- 101150081243 STA1 gene Proteins 0.000 description 20
- OVGWMUWIRHGGJP-WVDJAODQSA-N (z)-7-[(1s,3r,4r,5s)-3-[(e,3r)-3-hydroxyoct-1-enyl]-6-thiabicyclo[3.1.1]heptan-4-yl]hept-5-enoic acid Chemical compound OC(=O)CCC\C=C/C[C@@H]1[C@@H](/C=C/[C@H](O)CCCCC)C[C@@H]2S[C@H]1C2 OVGWMUWIRHGGJP-WVDJAODQSA-N 0.000 description 15
- 101000988961 Escherichia coli Heat-stable enterotoxin A2 Proteins 0.000 description 15
- YVWNECBAHBJBSI-HZOWPXDZSA-N (2E,4E)-2,4,6-trimethyldeca-2,4-dienamide Chemical compound CCCCC(C)\C=C(/C)\C=C(/C)C(N)=O YVWNECBAHBJBSI-HZOWPXDZSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
- H04L63/1475—Passive attacks, e.g. eavesdropping or listening without modification of the traffic monitored
-
- 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
- H04L45/26—Route discovery packet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0464—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload using hop-by-hop encryption, i.e. wherein an intermediate entity decrypts the information and re-encrypts it before forwarding it
Definitions
- the present invention relates to the field of network security applications, and in particular, to a method, system and device for exchanging routes.
- Wired LANs are generally broadcast networks. Data sent by one node can be received by other nodes. Each node on the network shares a channel, which brings great security risks to the network. As long as the attacker accesses the network for monitoring, it can capture all the packets on the network and steal critical information.
- the local area network LAN defined by the national standard GB/T 15629.3 (corresponding to IEEE 802.3 or ISO/IEC 8802-3) does not provide a data security method; the IEEE 802.1AE standard provides a data encryption protocol for protecting Ethernet, providing a A hop-by-hop encryption security measure to achieve secure communication of data between network nodes.
- the hop-by-hop encryption security measure imposes a huge computational burden on the switching devices in the LAN, which is likely to cause an attacker to attack the switching device; and the delay of the data packet from the transmitting node to the destination node is also increased. Reduce network transmission efficiency.
- the topology of wired LAN is more complicated, and the number of nodes involved is also relatively large, so the data communication in the network is more complicated. If it is necessary to flexibly select a secure communication mechanism based on the network topology between the data communication parties on the LAN, a mechanism is needed to obtain the network topology between the two parties.
- An object of the embodiments of the present invention is to provide a method, system, and device for exchanging routes, which implements information about a first switching device and a last switching device that a node obtains from a source node to a destination node.
- An exchange route discovery method comprising:
- the urce construct exchange route discovery request packet is sent to the destination node N Destmatl . n ; the exchange route discovery request packet includes a transmission source node N s .
- Urce is known from the source node N s . Urci ⁇ J Destination node N Destmatl .
- Urce configured to construct and send a switched route discovery request packet to the destination node N Destmatl . n, receives from the destination switching node N Destination routing of probe response packet; said first switch device SW-first and the last switch device SW-last, for the transmission source node N s. urce to the destination node N Destmatl.
- the exchange route discovery request packet is modified and then forwarded, and the destination node N Destmatl . n to the source node N s .
- the urce exchange route discovery response packet extracts and saves the identification quad information and then forwards it;
- the destination node N Destmatl . n used to receive N s from the source node.
- the exchange route discovery request packet of the urce after extracting the save identity quad structure information, sends the exchange route discovery response packet to the transmission source node N s .
- Urce .
- a terminal device where the terminal device includes:
- a switching route discovery requesting unit configured to: when the terminal device is a sending source node, send a switching route discovery request packet to the destination node, where the switched route discovery request packet includes the identifier quad-group information known by the terminal device;
- the identification quad is comprised of ID s . Urce , ID sw . first , ID sw last ,
- ID Source represents the identity of the sending source node
- ID sw _ flKt represents the identity of the first switching device through which the packet from the sending source node to the destination node passes
- ID sw4ast represents the data from the sending source node to the destination node The identity of the last switching device through which the packet passed
- ID Destmatl . n represents the identity of the destination node
- a switching route discovery receiving unit configured to: when the terminal device is a source node, send the exchange route discovery request packet to the destination node after receiving the exchange route discovery request unit, and receive the exchange route search response packet sent by the destination node, And extracting the identification quad information in the packet as the exchange routing information between the terminal device and the destination node.
- a switching device includes:
- a first switching routing update unit configured to: when the switching device is the first switching device that passes the data packet from the sending source node to the destination node, receive the switched route discovery request packet sent by the sending source node to the destination node Updating the exchange route discovery request packet with the identity of the switching device Forwarding the exchange route discovery request packet, wherein the exchange route discovery request packet includes identification quadruplet information known by the switching device, wherein the identification quad group includes
- ID source ID S W-first, ID S W-last, ID D estination; where ID Source indicates the identity of the sending source node;
- ID Destmatl . n represents an identifier of the destination node;
- ID sw _ & st field indicates identify the first switching device data transmitted from the source node to the destination node through which the packet;
- ID sw _ last field indicates data transmitted from the source node to the destination node of the packet through The identity of the last switching device;
- a second switching route updating unit configured to: when the switching device is the last switching device that passes the data packet from the sending source node to the destination node, when receiving the switched route discovery request packet sent by the sending source node to the destination node , by identifying the updating of the switching device switching the probe request packet route identifies four-tuple ID sw _ last field in the probe request packet forwarding exchange routing.
- the method, system and device for exchanging routes are provided by the embodiment of the present invention, and the source node N s can be implemented.
- urce and destination nodes N Destmatl. n get the information of the first switching device and the last switching device that the communication packets pass between them, and also send the source node N s .
- urce and destination nodes N Destmatl. A special location on the link between n . In this way, on the subsequent secure communication, the obtained exchange routing information can be utilized to flexibly select the applicable secure communication mechanism.
- FIG. 1 is a schematic diagram of a grouping of exchange route discovery protocols according to an embodiment of the present invention
- FIG. 2 is a flowchart of a switched route discovery protocol according to an embodiment of the present invention.
- FIG. 3 is a flowchart of exchanging route discovery messages from a user terminal to a user terminal according to an embodiment of the present invention
- FIG. 4 is a flowchart of exchanging route discovery messages from a switching device to a user terminal according to Embodiment 2 of the present invention
- FIG. 5 is a flowchart of exchanging route discovery messages by a user terminal to a switching device according to Embodiment 3 of the embodiment of the present invention.
- An exchange route discovery method provided by an embodiment of the present invention can implement a message that a node obtains a first switching device and a last switching device that a data packet from a source node to a destination node passes through.
- an exchange route discovery method provided by an embodiment of the present invention mainly includes the following two steps:
- the embodiment of the present invention will transmit from the source node N s . urce to the destination node N Destmatl.
- the exchange routing information between nodes of n is defined as an identification quad:
- IDsource indicates the source node.
- IDsW-first! represents the slave source node N S . urce to the destination node N Destlnatl.
- ID sw _ last indicates the slave source node N s . urce to the destination node N Destmatl.
- IDoestination Indicates the identity of the destination node Noestinaticm. Send the source node N S .
- the urce and destination node N Destination may be user terminals or switching devices. If the source node N s is sent. Urce is the switching device, then ID sw _ &st is ID s . urce; if the destination node N Destmatl. n is a switching device, namely the ID sw _ last ID Destination. In some cases, from the source node N s . Urci ⁇ j destination node N Destmatl .
- the first switching device SW-first and the last switching device SW-last that the route passes through may be the same switching device, that is, in some cases, the ID sw _ flKt and the ID sw _ last in the identification quad are the same. .
- the embodiment of the present invention further defines that the sending source node N s can be received.
- Urci ⁇ j destination node N Destmatl From the source node N s .
- Urci ⁇ j destination node N Destmatl The data of n may not pass through the intermediate switching device during transmission, or may pass through multiple intermediate switching devices.
- the exchange route discovery process is specifically described in FIG. 2, and the transmission source node N s described in the above step 1).
- the urce construct exchange route discovery request packet is sent to the destination node N Destmatl . n , the specific process is as follows:
- the urce construct exchange route discovery request packet is sent to the destination node N Destmatl . n ;
- the group mainly contains the identification quad [ID Source? IDsw-first, IDsw-last, IDoestination]; where:
- ID Source The value is the source node N s . Urce logo;
- IDsw-first If the source node N s is sent. If urce is a switching device, the value of ID sw _ flKt is ID s . Urce ; if the source node N s is sent. Urce is the user terminal, then the ID sw _ flK i is unknown;
- IDsw iast If the destination node N Destmatl . n is a switching device, the ID SW _ last value ID Destination, if the destination node N Destmatl. n is the user terminal, then the ID sw _ las i is unknown;
- IDoestmation Its value is the destination node N Destlnatl .
- the switching device SW-first After receiving the exchange route discovery request packet, the switching device SW-first finds that the value of the ID sw _ &st field in the identification quad is unknown, and sends the source node N s . urce their own neighbors, then fill in their identification information to identify the ID sw quad _ first in the field, and then forwarded;
- the intermediate switching device SW-M directly forwards the switched route discovery request packet
- any one of the switching devices after receiving the exchange route discovery request packet, any one of the switching devices first confirms whether it is the SW-first identity: if the ID sw _ flKt field value is unknown, and the source node is sent N s . urce own neighbor nodes, then fill in the own identification information ID sw _ first field identifies the four-tuple; then verify that they are SW-last status: If the ID sw _ last field value is unknown, and the destination node N Destmatl . n is their neighbor nodes, then fill in the own identification information ID sw _ last four-tuple identifier field; if neither is the intermediate switching equipment. In some cases SW-first and SW-last can be the same switching device.
- the switching device SW-last after receiving the exchange route discovery response packet, finds that it is in the identification quaternary, records the information of the identification quaternary group, and then forwards the information;
- the intermediate switching device SW-M directly forwards the switched route discovery response packet
- the switching device SW-first After the switching device SW-first receives the exchange route discovery response packet and finds itself in the identification quad, it records the information of the identity quad and then forwards it;
- any one of the switching devices after receiving the exchange route discovery response packet, first confirms whether it is in the identification quad. If yes, records the identification quad information; otherwise, , direct forwarding.
- Urce Only the source node N s is sent throughout the network. Urce , the first switching device SW-first, the last switching device SW-last, and the destination node N Destmatl . n needs to be recorded from the sending source node. Go to the destination node N Destmatl . Exchange routing information of n . If the source node N s is sent. Urce is the switching device, then the source node N s is sent. Urce to the destination node N Destinatl . The first switching device SW-first through which the n packet passes is itself, ie SW-first is N s . urce; if the destination node N Destmatl. n is the switching device, then the source node N s is sent. N Destination urce to the destination node through the last data packet switching device SW-last is N Destination, i.e. SW-last is N Destination.
- the source node N s is sent.
- the urce may carry an identifier information in the packet, and the identifier information may be a clock, a sequence number, or a random number, etc., for identifying the freshness of the exchange route search; correspondingly, the destination node N Destmatl .
- the urce Upon receiving the probe response packet switching routing, packet identification information to be checked before the transmission and exchange of routing information packets to identify whether the probe request is consistent.
- the exchange routing information between n may also perform ciphertext transmission in a hop-by-hop encryption manner.
- FIG. 3 shows the switching route of the user terminal STA1 to STA2 in Embodiment 1 of the present invention.
- the message flow diagram is explored, wherein the switching device SW-A is a neighbor node of STA1, the switching device SW-B is a neighbor node of STA2, and the first node that passes the data packet from STA1 to STA2 is STA1, and the last node is STA2.
- SW-M is an intermediate switching device.
- the entire process of switching route discovery includes two packets, a switched route discovery request packet and an exchange route discovery response packet.
- the process of transmitting the route discovery request packet from STA1 to STA2 is as follows:
- STA1 constructs a switched route discovery request packet, identifying the quad as [ID STA1 ,? ,? , ID STA2 ];
- SW-A modifies the exchange route discovery request packet, identifying the quad as [ID STA1 , ID SW A ,? , ID STA2 ] , and then forwarded;
- SW-B modifies the exchange route discovery request packet, and identifies the quad group as [ID STA1 , IDSW-A, IDsw-B,
- the STA2 receives the exchange route discovery request packet, saves the identifier quad information, and constructs the exchange route search response packet;
- the process of exchanging route discovery response packets from STA2 to STA1 is as follows:
- the STA2 receives the exchange route discovery request packet, saves the identifier quaternary information, and encapsulates the obtained identification quaternion information in the exchange route discovery response packet, and sends it to the STA1;
- the SW-B records the marked quad link information in the route discovery response packet, and then forwards the information;
- the SW-M directly forwards the exchange route discovery response packet
- the SW-A record exchanges the identification quad-group information in the route search response packet, and then forwards the information;
- the STA1 receives the exchange route discovery response packet, and records the identification quad information in the exchange route discovery response packet.
- FIG. 4 is a flow chart of the exchange route discovery message of the switching device SW-A to the user terminal STA2 in Embodiment 2 of the present invention, and the entire process includes two packets, namely, a switched route discovery request packet and an exchange route search response packet. .
- the process of transmitting the route discovery request packet from the SW-A to the STA2 is as follows:
- the SW-A constructs a switch route discovery request packet, identifying the quad as [ID SW _ A , IDSW-A,? ,
- the SW-M directly forwards the exchange route discovery request packet
- SW-B modifies the exchange route discovery request packet, identifying the quad as [ID SW _ A , ID SW A , IDSW B, IDsTA2], then forwarded;
- the STA2 receives the exchange route discovery request packet, saves the identifier quad information, and constructs the exchange route search response packet;
- the STA2 receives the exchange route discovery request packet, saves the identifier quaternion information, and encapsulates the obtained identification quaternion information in the exchange route discovery response packet, and sends it to the SW-A;
- the SW-B records the marked quad link information in the route discovery response packet, and then forwards the information;
- the SW-M directly forwards the exchange route discovery response packet
- Figure 5 is a flow chart showing the exchange route discovery message of the user terminal STA1 to the switching device SW-B in Embodiment 3 of the present invention.
- the whole process includes two packets, namely, the exchange route discovery request packet and the exchange route discovery response packet. .
- the process of exchanging route discovery request packets from STA1 to SW-B is as follows:
- STA1 constructs a switched route discovery request packet, identifying the quad as [ID STA1 ,? , IDSW-B, ID sw-B];
- the SW-A modifies the exchange route discovery request packet, and identifies the quad group as [ID STA1 , IDSW-A, IDSW-B, ID SW . B ], and then forwards;
- the SW-M directly forwards the exchange route discovery request packet
- the SW-B saves the identification quad information, and constructs a switched route discovery response packet
- the SW-B encapsulates the obtained identification quad information in the exchange route discovery response packet, and sends it to the STA1;
- the SW-M directly forwards the exchange route discovery response packet
- the SW-A record exchanges the identification quad-group information in the route search response packet, and then forwards the information;
- the STA1 receives the exchange route discovery response packet, and records the identification quad information in the exchange route discovery response packet.
- the embodiment of the invention further provides a switched route searching system, where the switched route searching system comprises: a sending source node N s . Urce , the first switching device SW-first, the last switching device SW-last and the destination node N Destmatl . n .
- the source node N s . Urce used to construct and send exchange routes
- the destination node N Destmatl is grouped by the discovery request. n, receives from the destination switching node ⁇ ⁇ route probe response packet; said first switch device SW-first and the last switch device SW-last transmission to the source node N s.
- Urc ⁇ j stated the destination node N Destmatl .
- the exchange route discovery request packet of n is modified and then forwarded, and the destination node N Destmatl . n to the source node N s .
- the urce exchange route discovery response packet extracts and saves the identification quaternion information and then forwards it; the destination node N Destmatl . n receives from the source node N s .
- the urce exchange route discovery request packet after extracting the save identity quaternion information, sends the exchange route discovery response packet to the transmission source node N s . Urce .
- the switched route discovery system may further include: an intermediate switching device SW-M; the intermediate switching device SW-M is capable of receiving the transmission source node N s . urce and destination nodes N Destmatl.
- the communication packet between n does not appear in the switching device in the identification quad; the intermediate switching device SW-M pairs the transmission source node N s . urce and destination nodes N Destmatl.
- the exchange route discovery request packet and the exchange route discovery response packet between n are directly forwarded.
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Priority Applications (2)
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KR1020127034457A KR101423751B1 (ko) | 2010-06-07 | 2011-01-14 | 스위칭 경로 탐색 방법, 시스템 및 장치 |
US13/702,785 US9137259B2 (en) | 2010-06-07 | 2011-01-14 | Switch route exploring method, system and device |
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CN2010101957252A CN101854306B (zh) | 2010-06-07 | 2010-06-07 | 一种交换路由探寻方法及系统 |
CN201010195725.2 | 2010-06-07 |
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US (1) | US9137259B2 (zh) |
KR (1) | KR101423751B1 (zh) |
CN (1) | CN101854306B (zh) |
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CN101854306B (zh) | 2010-06-07 | 2011-12-28 | 西安西电捷通无线网络通信股份有限公司 | 一种交换路由探寻方法及系统 |
US10433272B2 (en) | 2016-05-17 | 2019-10-01 | Googel LLC | Distributed coordination of mesh network configuration updates |
CN109861925B (zh) * | 2017-11-30 | 2021-12-21 | 华为技术有限公司 | 数据传输方法、相关装置及网络 |
CN113542197A (zh) * | 2020-04-17 | 2021-10-22 | 西安西电捷通无线网络通信股份有限公司 | 一种节点间保密通信方法及网络节点 |
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WO2005015856A1 (ja) * | 2003-08-08 | 2005-02-17 | Sony Corporation | 通信システム、通信方法、通信端末装置及びその制御方法並びにプログラム |
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KR100612447B1 (ko) * | 2004-02-16 | 2006-08-16 | 삼성전자주식회사 | 액세스 라우터의 망정보 관리 방법 및 그 액세스 라우터 |
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- 2011-01-14 US US13/702,785 patent/US9137259B2/en active Active
- 2011-01-14 KR KR1020127034457A patent/KR101423751B1/ko active IP Right Grant
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Patent Citations (4)
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US20040081175A1 (en) * | 2002-07-10 | 2004-04-29 | Wall Richard W. | Network protocol for efficient distributed control |
CN1833414A (zh) * | 2003-08-08 | 2006-09-13 | 索尼株式会社 | 通信系统、通信方法、通信终端装置、其控制方法以及程序 |
CN101375171A (zh) * | 2006-01-17 | 2009-02-25 | 摩托罗拉公司 | 用于多跳分组转发的系统和方法 |
CN101854306A (zh) * | 2010-06-07 | 2010-10-06 | 西安西电捷通无线网络通信股份有限公司 | 一种交换路由探寻方法及系统 |
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US20140007231A1 (en) | 2014-01-02 |
CN101854306B (zh) | 2011-12-28 |
US9137259B2 (en) | 2015-09-15 |
KR101423751B1 (ko) | 2014-08-06 |
CN101854306A (zh) | 2010-10-06 |
KR20130032879A (ko) | 2013-04-02 |
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