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1. (WO2020001389) COMMUNICATION METHOD, DEVICE AND SYSTEM FOR AVOIDING LOOP
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2020/001389 International Application No.: PCT/CN2019/092444
Publication Date: 02.01.2020 International Filing Date: 23.06.2019
IPC:
H04L 12/705 (2013.01) ,H04L 12/703 (2013.01) ,H04L 12/741 (2013.01) ,H04L 12/749 (2013.01) ,H04L 12/46 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
70
Packet switching systems
701
Routing or path finding
703
Route fault prevention or recovery, e.g. rerouting, route redundancy, virtual router redundancy protocol [VRRP] or hot standby router protocol [HSRP]
705
Loop or livelock prevention, e.g. time to live [TTL] or spanning tree
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
70
Packet switching systems
701
Routing or path finding
703
Route fault prevention or recovery, e.g. rerouting, route redundancy, virtual router redundancy protocol [VRRP] or hot standby router protocol [HSRP]
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
70
Packet switching systems
701
Routing or path finding
741
Header address processing for routing, e.g. table lookup
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
70
Packet switching systems
701
Routing or path finding
741
Header address processing for routing, e.g. table lookup
749
Address processing over inter-domain or inter-network, e.g. mapping different addresses between IPv6 and IPv4 networks for routing
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12
Data switching networks
28
characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
46
Interconnection of networks
Applicants:
华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN/CN]; 中国广东省深圳市 龙岗区坂田华为总部办公楼 Huawei Administration Building, Bantian, Longgang District Shenzhen, Guangdong 518129, CN
Inventors:
胡重阳 HU, Chongyang; CN
王海波 WANG, Haibo; CN
Priority Data:
201810703111.730.06.2018CN
Title (EN) COMMUNICATION METHOD, DEVICE AND SYSTEM FOR AVOIDING LOOP
(FR) PROCÉDÉ DE COMMUNICATION, DISPOSITIF ET SYSTÈME POUR ÉVITER UNE BOUCLE
(ZH) 一种避免环路的通信方法、设备和系统
Abstract:
(EN) The present application provides a communication method, device and system for avoiding a loop. In the communication method, a first PE device sends a first identifier to a second PE device via a first interface; then, the first PE device receives, via the first interface, a data packet comprising the first identifier sent by the second PE device; next, the first PE device determines that a second interface associated with the first identifier is in a fault state; in response to determining that the second interface is in a fault state, the first PE device avoids sending the data packet to the second PE device via the first interface, wherein the second interface is an interface of the first PE device for connecting to a CE device. The solution provided in the present application can avoid causing a loop.
(FR) La présente invention concerne un procédé de communication, un dispositif et un système pour éviter une boucle. Dans le procédé de communication, un premier dispositif PE envoie un premier identifiant à un second dispositif PE par l'intermédiaire d'une première interface ; ensuite, le premier dispositif PE reçoit, par l'intermédiaire de la première interface, un paquet de données comprenant le premier identifiant envoyé par le second dispositif PE ; ensuite, le premier dispositif PE détermine qu'une seconde interface associée au premier identifiant est dans un état de défaut ; en réponse à la détermination que la seconde interface est dans un état de défaut, le premier dispositif PE évite d'envoyer le paquet de données au second dispositif PE par l'intermédiaire de la première interface, la seconde interface étant une interface du premier dispositif PE pour une connexion à un dispositif CE. La solution fournie dans la présente invention peut éviter de créer une boucle.
(ZH) 本申请提供了一种避免环路的通信方法、设备和系统。在一种通信方法中,第一PE设备经由第一接口向第二PE设备发送第一标识,随后第一PE设备经由第一接口接收第二PE设备发送的包括第一标识的数据包,接着第一PE设备确定与第一标识关联的第二接口处于故障状态,响应于确定第二接口处于故障状态,第一PE设备避免经由第一接口向第二PE设备发送数据包,其中第二接口是第一PE设备用于连接CE设备的接口。通过本申请提供的方案,可以避免引发环路。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)