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1. WO2011115209 - COMMUNICATION SYSTEM, SWITCHING HUB, AND ROUTER

Publication Number WO/2011/115209
Publication Date 22.09.2011
International Application No. PCT/JP2011/056391
International Filing Date 17.03.2011
IPC
H04L 12/44 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
44Star or tree networks
H04L 12/46 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. LAN or WAN
46Interconnection of networks
CPC
H04L 12/462
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
46Interconnection of networks
4604LAN interconnection over a backbone network, e.g. Internet, Frame Relay
462LAN interconnection over a bridge based backbone
H04L 12/4645
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
28characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
46Interconnection of networks
4641Virtual LANs, VLANs, e.g. virtual private networks [VPN]
4645Details on frame tagging
H04L 61/103
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
61Network arrangements or network protocols for addressing or naming
10Mapping of addresses of different types; Address resolution
103across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
Applicants
  • ヤマハ株式会社 YAMAHA CORPORATION [JP]/[JP] (AllExceptUS)
  • 瀬尾 達也 SEO Tatsuya (UsOnly)
Inventors
  • 瀬尾 達也 SEO Tatsuya
Agents
  • 古館 久丹子 FURUDATE Kuniko
Priority Data
2010-06444819.03.2010JP
2010-22212030.09.2010JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) COMMUNICATION SYSTEM, SWITCHING HUB, AND ROUTER
(FR) SYSTÈME DE COMMUNICATION, CONCENTRATEUR DE COMMUTATION ET ROUTEUR
(JA) 通信システム、スイッチングハブ、およびルータ
Abstract
(EN) Provided is a communication system wherein the relations of connections between the communication devices included in a communication network such as a LAN (Local Area Network) controlled by a router can be determined at low cost and without imposing excessive load on these communication devices. When a switching hub has received from a downstream port an ARP (Address Resolution Protocol) packet addressed to a router and requesting that the LAN be connected to an IP network, the switching hub adds tag information indicating the port to the ARP packet and forwards the packet. Further, when the router has received an ARP packet addressed to a device managed by the router, the router generates, from the tag information attached to the ARP packet, information indicating the relations of connections between the communication terminal which has transmitted the ARP packet and switching hubs which have forwarded the packet, and stores the generated information.
(FR) Un système de communication est fourni dans lequel les relations des connexions entre les dispositifs de communication inclus dans un réseau de communication tel qu'un réseau local (LAN) commandés par un routeur peuvent être déterminées à moindre coût et sans imposer une charge excessive sur ces dispositifs de communication. Lorsqu'un concentrateur de commutation a reçu depuis un port de sens descendant un paquet ARP (protocole de résolution d'adresse) adressé à un routeur et demandant que le LAN soit connecté à un réseau IP, le concentrateur de commutation ajoute des informations d'étiquette indiquant le port au paquet ARP et achemine le paquet. En outre, lorsque le routeur a reçu un paquet ARP adressé à un dispositif géré par le routeur, il génère, à partir des informations d'étiquette annexées au paquet ARP, des informations indiquant les relations des connexions entre le terminal de communication qui a transmis le paquet ARP et les concentrateurs de commutation qui ont acheminé le paquet, et stocke les informations générées.
(JA)  本発明の目的は、LAN(Local Area Network)などルータ配下の通信ネットワークに含まれている各通信装置の接続関係を、それら通信装置に過大な負荷をかけることなく、かつ低コストで把握することができるようにすることである。LANをIP網へ接続するルータ宛てのARP(Address Resolution Protocol)パケットを下流側から受信したスイッチングハブに、そのARPパケットを受信したポートを示すタグ情報を付与して転送する処理を実行させる。一方、ルータには、自装置宛のARPパケットを受信した場合に、そのARPパケットに付与されているタグ情報からそのARPパケットの送信元の通信端末とそのARPパケットの転送経路上のスイッチングハブとの接続関係を示す情報を生成して記憶する処理を実行させる。
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