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1. EP1858205 - TUNNELING DEVICE, TUNNEL FRAME SORTING METHOD USED FOR THE DEVICE, AND ITS PROGRAM

Office European Patent Office
Application Number 06715238
Application Date 27.02.2006
Publication Number 1858205
Publication Date 21.11.2007
Publication Kind A4
IPC
H04L 12/46
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
H04L 12/24
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
02Details
24Arrangements for maintenance or administration
H04L 12/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
H04L 12/701
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
701Routing or path finding
H04L 29/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02Communication control; Communication processing
06characterised by a protocol
H04L 29/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02Communication control; Communication processing
06characterised by a protocol
08Transmission control procedure, e.g. data link level control procedure
CPC
H04L 12/4633
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
4633Interconnection of networks using encapsulation techniques, e.g. tunneling
H04L 41/0213
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
41Arrangements for maintenance or administration or management of packet switching networks
02involving integration or standardization
0213using standardized network management protocols, e.g. simple network management protocol [SNMP] or common management interface protocol [CMIP]
H04L 45/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
45Routing or path finding of packets in data switching networks
H04L 69/22
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
69Application independent communication protocol aspects or techniques in packet data networks
22Header parsing or analysis
H04L 69/324
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
69Application independent communication protocol aspects or techniques in packet data networks
30Definitions, standards or architectural aspects of layered protocol stacks
32High level architectural aspects of 7-layer open systems interconnection [OSI] type protocol stacks
322Aspects of intra-layer communication protocols among peer entities or protocol data unit [PDU] definitions
324in the data link layer, i.e. layer two, e.g. HDLC
H04L 2212/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2212Encapsulation of packets
Applicants NEC CORP
Inventors KOIDE TOSHIO
Designated States
Priority Data 2005059830 04.03.2005 JP
2006304179 27.02.2006 JP
Title
(DE) TUNNELUNGSEINRICHTUNG, FÜR DIE EINRICHTUNG VERWENDETES TUNNELRAHMENSORTIERVERFAHREN UND PROGRAMM DAFÜR
(EN) TUNNELING DEVICE, TUNNEL FRAME SORTING METHOD USED FOR THE DEVICE, AND ITS PROGRAM
(FR) DISPOSITIF DE TUNNELLISATION, PROCEDE DE TRI DE TRAME DE TUNNEL UTILISE POUR CE DISPOSITIF ET SON PROGRAMME
Abstract
(EN)
The present invention provides a tunneling apparatus which can perform tunneling without requiring the network to be suspended or requiring the existing configuration of a local network to be modified. The frame sorting part 11 determines whether or not a frame input from a local network through a physical interface is an encapsulated tunnel frame. If such frame is a tunnel frame, the frame sorting part 11 outputs such frame to the decapsulation unit of the tunneling part 13. If such frame is not a tunnel frame, the frame sorting part 11 outputs such frame to at least one of the address resolution unit of the kernel part 12 and the encapsulation unit of the tunneling part, based on the characteristics of such frame.

(FR)
La présente invention décrit un dispositif de tunnellisation permettant une tunnellisation sans arrêt temporaire du réseau et sans altération de la configuration du réseau local. Une section de tri de trame (11) définit si une trame saisie depuis un réseau local par le biais d’une interface physique est ou non encapsulée, émet la trame vers un moyen de décapsulation d’une section de tunnellisation (13) lorsque la trame est une trame de tunnel et émet la trame vers au moins un des moyens de résolution d’adresse d’une section kernel (12) et vers un moyen d’encapsulation de la section de tunnellisation (13), selon la nature de la trame lorsque la trame n’est pas une trame de tunnel.