CN101437013A - L2C (layer 2 control) proxy method, apparatus and system - Google Patents

L2C (layer 2 control) proxy method, apparatus and system Download PDF

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Publication number
CN101437013A
CN101437013A CN200710124638.6A CN200710124638A CN101437013A CN 101437013 A CN101437013 A CN 101437013A CN 200710124638 A CN200710124638 A CN 200710124638A CN 101437013 A CN101437013 A CN 101437013A
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Prior art keywords
line
message
port
port information
equipment
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CN200710124638.6A
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Inventor
郑若滨
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200710124638.6A priority Critical patent/CN101437013A/en
Priority to PCT/CN2008/073068 priority patent/WO2009065349A1/en
Publication of CN101437013A publication Critical patent/CN101437013A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/562—Brokering proxy services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08—Protocols for interworking; Protocol conversion
    • H04L69/085—Protocols for interworking; Protocol conversion specially adapted for interworking of IP-based networks with other networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention discloses an L2C proxy method for supporting line binding. Layer 2 controls an L2C proxy to obtain physical port information or line binding port information in a received message; and the L2C proxy performs the mutual conversion between the physical port information and the line binding port information according to the line binding mapping relation. The invention also discloses an L2C proxy device and a communication system for supporting the line binding. Equipment of an operator can only need to operate a line binding port, which can ensure that the change of a physical port (or a logic port) or the line binding relation has no influence on the business development process of the equipment of the operator, and that the change of the line binding relation has no influence on access equipment.

Description

A kind of L 2 C (layer 2 control) proxy method, device and system
Technical field
The present invention relates to the communication technology, specifically, relate to a kind of line bundle port mapping agency's methods, devices and systems.
Background technology
Layer two control protocol (Layer 2 Control Protocol are to call " L2CP " in the following text) are mainly used in Topology Discovery, line configuring, line test and multicast control.When Access Network is controlled for supporting new business to increase on its equipment, adopt L2CP by BAS Broadband Access Server (Broadband Remote AccessServe, to call " BRAS " in the following text) a large amount of access node (the Access Node of control, to call " AN " in the following text), can reduce the operation support equipment interconnection and go into the burden that each equipment of network is all controlled.
Line bundle is a kind of common technology, at present, its execution mode mainly contains two kinds: 1〉many line attachments are tied up, more bandwidth, longer distance, higher reliability are provided, typically be exactly Digital Subscriber Line (Digital Subscriber Line, to call " DSL " in the following text) line bonding, as G.SHDSL.Such as, a video stream bandwidth 6M, but xDSL circuit maximum can only provide the 4M bandwidth, by two pairs of DSL line bundles being realized transmission 6M video flowing; 2〉interconnected or uplink converges, and as link aggregation (LinkAggregation) technology, link aggregation is that many physical links are condensed together, and forms a logical links.
In the prior art, Digital Subscriber Line Access Multiplexer (Digital Subscriber Line AccessMultiplexer, to call " DSLAM " in the following text) DSL physical port (or logic port) press SP (ServiceProvier, service provider, Fig. 1 is an example with the ISP of Internet operator) carry out physical port (or logic port) subregion, ISP directly controls DSL physical port (or logic port) after the respective partition by L2CP.In order to reduce layer two control (Layer 2 Control are to call " L2C " in the following text) message traffic, introduce the L2C agency, promptly the IWF among Fig. 1 (Interworking Function, interconnect function) filters L2C message by ISP or AN, detects and converge forwarding.Usually, IWF is arranged in Ethernet switch and BRAS.
The shortcoming of prior art is that L2C is undertaken by physical port the control of DSLAM, do not support to stride AN or stride circuit board and same AN in same circuit board on different physical port implement the mode of line bundle.Especially, when ISP need support to stride AN or stride a plurality of different physical ports (or logic port) line bundle of circuit board, ISP not only needed to know physical port, also needs to know the relation of physical port and line bundle.When DSLAM upgrading or carry out other when safeguarding, all must guarantee that physical port does not change, otherwise, will cause the line bundle relationship change to be configured ISP again, thereby increase the difficulty that DSLAM is expanded; Simultaneously, the impact and the cost of not little operation aspect have been brought between coordination network access carrier and ISP.
Summary of the invention
The present invention is directed to the deficiency of mentioning in the prior art, a kind of L2C Proxy Method, device and system are provided, in the L2C agency, introduce " line bundle mapping ", realize the port isolation between operator's equipment and the access device.
The embodiment of the invention provides a kind of line bundle mapping method, comprising:
The L2C agency obtains line port information or line binding port information in the message that receives;
The L2C agency carries out the mutual conversion of described line port information and line binding port information according to line port information of having stored and the line bundle mapping relations between the line binding port information.
The embodiment of the invention also provides a kind of L2C agent apparatus, comprises message receiving element, mapping relations memory cell, mapping conversion processing unit, packet sending unit, wherein:
The message receiving element receives message;
The mapping relations memory cell, the line bundle mapping relations information between storage line road port and the line bundle port;
The mapping conversion processing unit according to the mapping relations information of preserving in the described mapping relations memory cell, carries out conversion process to the line port information or the line binding port information of the message that receives in the described message receiving element;
Packet sending unit sends the message after the described mapping conversion processing unit conversion process.
The embodiment of the invention also provides a kind of communication system, comprises first equipment, second equipment and layer two control L2C agent apparatus, wherein:
First equipment sends the message that comprises the message of line port information or comprise line bundle port mark information;
The L2C agent apparatus carries out the mutual conversion of described line port information and line binding port information according to the line bundle mapping relations of having stored;
Second equipment receives described message after the conversion of L2C agent apparatus.
Described first equipment comprises access node AN, and described second equipment comprises BAS Broadband Access Server BRAS or wideband network gateway BNG or service provider ISP equipment; Described L2C agent apparatus is provided with separately or is integrated in first equipment or second equipment.
First equipment is far-end AN, and the L2C agent apparatus is integrated in AN inside, and second equipment is BRAS or BNG or ISP equipment.
By technique scheme as can be seen, L2C agency of the present invention can be provided with separately or be integrated in first equipment or second equipment, line bundle provided by the invention can be the line bundle relation of striding AN or striding circuit board, not only can be the line bundle of a plurality of different physical ports (or logic port) on the same circuit board in the same AN, can also be for striding AN or striding a plurality of different physical ports (or logic port) line bundle of circuit board; The variation that both can guarantee physical port (or logic port) or line bundle relation does not exert an influence to operator's equipment process of commencing business, and can guarantee that the variation of line bundle relation does not exert an influence to access device yet.
Description of drawings
Fig. 1 is a prior art L2C agency plant schematic diagram;
Fig. 2 is the communication process schematic diagram of the embodiment of the invention;
Fig. 3 is a communication agent structure drawing of device of the present invention;
Fig. 4 (a), 4 (b) are provided with schematic diagram separately for L2C agency of the present invention
Fig. 5 places the schematic diagram of acting on behalf of of AN inside for line bundle of the present invention unit
Fig. 6 (a), 6 (b) place the schematic diagram of acting on behalf of of BNG/BRAS inside for line bundle of the present invention unit
Fig. 7 (a), 7 (b) act on behalf of schematic diagram for the L2C of AN band distal end AN of the present invention
Embodiment
The invention provides a kind of L2C Proxy Method, device and system that supports line bundle.Below technical scheme of the present invention is described in further detail.
First equipment comprises access device, and as AN, second equipment can be BRAS, wideband network gateway (BroadNetwork Gateway is to call BNG in the following text) or ISP equipment; Perhaps, first equipment comprises BRAS, BNG or ISP equipment, and second equipment is AN.Present embodiment first equipment is example with the access device, and second equipment is example with service provider equipment, and principle was identical when first equipment or second equipment were other equipment.
Operator's equipment and access device are realized the processing procedure of communicate by letter as shown in Figure 2 by the L2C agency, and L2C acts on behalf of and obtains (or logic port) information of physical port in the message that receives or line binding port information; The L2C agency finishes the mutual conversion of physical port (or logic port) information and line binding port information according to the line bundle mapping relations.Specifically can comprise:
(1) up direction
The L2C agency receives the message that access device sends to service provider (being SP, Service Provider) equipment, comprises physical port (or logic port) sign and/or corresponding M AC address in the described message; The L2C agency obtains predetermined physical port of having stored (or logic port) and the mapping relations between the line bundle port, and, be converted to corresponding line bundle port-mark and/or corresponding M AC address according to described mapping relations with the physical port in the described message (or logic port) sign and/or corresponding M AC address; The message that comprises line bundle port-mark and/or corresponding M AC address after the transmission conversion process is to the SP network equipment.
(2) down direction
The L2C agency receives the message that service provider equipment sends to access device, comprises the line bundle port-mark in the described message; The L2C agency obtains the mapping relations between predetermined physical port (or logic port) and the line bundle port, and will be with the message of described line bundle port-mark and/or corresponding M AC address, according to described mapping relations, be converted to the message of one group of band corresponding physical port (or logic port) sign and/or corresponding M AC address; Send and to comprise physical port (or logic port) sign and/or corresponding M AC address message to access device after the conversion process.
Above-described message comprises control message and/or data message, and the control message comprises L2CP message or AAA message, and data message comprises DHCP or PPPoE message.Further, mutual control message between described operator equipment and the access device, perhaps, control message mutual between IP edge device that is connected with described operator equipment and the access device can be the L2C message based on L2CP, L2TP or AAA, described physical port (or logic port) is managed for configuration being used for.
If it is do not preserve map information in advance, then can also be in the L2C agency pre-configured and preserve mapping relations between physical port (or logic port) and the line bundle port.
Corresponding with above-mentioned line bundle method, a kind of L2C agent apparatus, structure chart comprise message receiving element, packet sending unit, line bundle map unit as shown in Figure 3.Wherein:
(1) message receiving element
This unit specifically is used to receive message mutual between operator's equipment and the access device, described message can be the control message, also can be data message, wherein, the control message can be L2C (Layer 2 Control, layer two control) message, as L2CP (Layer 2 Control Protocol, layer 2 control protocol) message, L2TP (Layer 2 Tunneling Protocol Layer 2 Tunneling Protocols) message or AAA (Authentication, Authorization and Accounting, authentication) message.
(2) line bundle map unit
This unit specifically is used to obtain the many-one mapping relations information between predetermined physical port (or logic port) and the line bundle port, and physical port (or logic port) or line binding port information in the message that described message receiving element is received, carry out conversion process between physical port (or logic port) and the line bundle port according to described mapping relations information;
Further, described line bundle map unit specifically can comprise mapping relations memory cell and mapping conversion processing unit, wherein:
The mapping relations memory cell, be used to obtain the mapping relations information of the one-to-many of also storing predetermined line bundle port and physical port (or logic port), perhaps obtain also storing predetermined physical port (or logic port) and the many-one mapping relations information between the line bundle port, as shown in table 1; Place in circuit sign in the table can be the physical port sign, also can be the logic port sign.
The mapping conversion processing unit, be used for the mapping relations information of preserving according to described mapping relations memory cell, physical port in the message of receiving (or logic port) or line binding port information are carried out conversion process between physical port (or logic port) and the line bundle port, be specifically as follows: physical port (or logic port) sign and/or the corresponding M AC address transition that access device are sent in the message of operator's equipment are line bundle port-mark and/or corresponding M AC address, and the message that operator's equipment is sent to the band line bundle port-mark of access device and/or corresponding M AC address is converted to the message of one group of band respective physical port (or logic port) sign and/or corresponding M AC address.
(3) packet sending unit
This unit is corresponding with the message receiving element, be used to send the message after the described line bundle map unit conversion process, comprise the message that comprises line bundle port-mark and/or corresponding M AC address after operator's equipment sends conversion process, the message that comprises physical port (or logic port) sign and/or corresponding M AC address after access device sends conversion process.
Corresponding with above-mentioned line bundle method and communication agent device, a kind of communication system, comprise access device, Network operator equipment and L2C agent apparatus, wherein, access device is used for transmission and comprises physical port (or logic port) sign and/or the message of corresponding M AC address or the message that reception comprises line bundle port-mark and/or corresponding M AC address;
The L2C agent apparatus is the above-described device that comprises message receiving element, mapping relations memory cell, mapping conversion processing unit, packet sending unit.Be used for according to the line bundle mapping relations, finish the mutual conversion of described physical port (or logic port) sign and/or corresponding M AC address and line bundle port-mark and/or corresponding M AC address;
Network operator equipment is used to receive described message or the transmission message that comprises line bundle port-mark and/or corresponding M AC address after the conversion of L2C agent apparatus.
Wherein, the L2C agent apparatus can independently be provided with, shown in Fig. 4 (a), 4 (b).Perhaps, also can be integrated in access device or the IP edge device, perhaps, also can be integrated in the intermediate equipment between access device and the operator's equipment.
Further, described communication system can also comprise the interconnecting function unit that is connected between described device and the operator's equipment, i.e. IWF unit, and it specifically can be used for transmitting information mutual between described device and the operator by layer two control messages.
In addition, L2C agency of the present invention can also be integrated in AN inside, as shown in Figure 5; Also can be integrated in BNG/BRAS inside, shown in Fig. 6 (a), 6 (b).
For the application scenarios of AN band distal end AN, line bundle at be far-end AN physical port (or logic port) binding, the L2C agent apparatus is integrated in AN inside, shown in Fig. 7 (a), 7 (b).
Be example with L2C message, dhcp message, PPPoE (Ethernet bearing point-to-point protocol) message respectively below, specify described mapping translation process.
(1) for L2C message:
Up direction, " line bundle map unit " is to the L2C message from AN, by wherein with physical port (or logic port) sign (for example be " ACI 12 ") inquire about " mapping relations table " (as table 1) in " mapping relations memory cell ", obtain corresponding line bundle port-mark (for example obtaining " A ") and/or corresponding M AC address (for example obtaining " MAC 1 "), the physical port in the L2C message (or logic port) sign " ACI 12 " is converted to corresponding line bundle port-mark " A "; Alternatively, the target MAC (Media Access Control) address of two layers of frame of carrying conversion back L2C message will be transmitted by being set to " MAC 1 " again.
Down direction, " line bundle map unit " is to the L2C message from BRAS/BNG, by wherein with line bundle port-mark (for example being " B ") inquiry " mapping relations memory cell " in " mapping relations table " (as table 1), obtain corresponding one group of physical port (or logic port) sign and (for example obtain " ACI21 ", " ACI 22 ", " ACI 23 ") and/or corresponding M AC address (for example obtain " MAC 21 ", " MAC22 ", " MAC 23 "), then the L2C message conversion with a band line bundle port-mark " B " is that one group (being 3) is with physical port (or logic port) sign " ACI 21 " respectively in this example, " ACI 22 ", the L2C message of " ACI23 "; Alternatively, the target MAC (Media Access Control) address of two layers of frame of carrying conversion back L2C message will be provided with according to " MAC 21 ", " MAC 22 ", " MAC 23 " respectively, transmits again.
Figure A200710124638D00111
Table 1
(2) for dhcp message:
Up direction, " line bundle map unit " is to the dhcp message from AN, by among its Option with physical port (or logic port) sign (be among the Option82 with " Circuit ID circuit number " territory, be " ACI 23 " in this example) inquire about " mapping relations table " (as table 1) in " mapping relations memory cell ", obtain corresponding line bundle port-mark (for example obtaining " B ") and/or corresponding M AC address (for example obtaining " MAC 2 "), the physical port among the dhcp message Option (or logic port) sign " ACI 23 " is converted to corresponding line bundle port-mark " B "; Alternatively, the target MAC (Media Access Control) address of two layers of frame of carrying conversion back L2C message will be transmitted by being set to " MAC 2 " again.
Can also in said process,, promptly L2C agency's IP address can be written in the dhcp message, carry out described forwarding operation afterwards again according to giaddr (the transfer Agent IP address) territory among L2C agency's the IP address setting dhcp message Option.
(3) for PPPoE (Ethernet bearing point-to-point protocol) message:
Up direction, " line bundle map unit " is to the PPPoE message from the tape label (TAG) of AN, by among its TAG with physical port (or logic port) sign (be among the TAG with access ring road sign field of awareness access loop id, be " ACI 11 " in this example) inquire about " mapping relations table " (as table 1) in " mapping relations memory cell ", obtain corresponding line bundle port (for example obtaining " A ") and/or corresponding M AC address (for example obtaining " MAC 1 "), the sign of the physical port (or logic port) among the PPPoE message TAG " ACI 11 " is converted to corresponding line bundle port-mark; Alternatively, the target MAC (Media Access Control) address of two layers of frame of carrying conversion back L2C message will be transmitted by being set to " MAC 1 " again.Alternatively, can also be according to the address option " A " in the address setting message of the entity of carrying out conversion process.
Line bundle provided by the invention can be the line bundle relation of striding AN or striding circuit board, not only can be the line bundle of a plurality of different physical ports (or logic port) on the same circuit board in the same AN, can also be for striding AN or striding a plurality of different physical ports (or logic port) line bundle of circuit board; The variation that both can guarantee physical port (or logic port) or line bundle relation does not exert an influence to operator's equipment process of commencing business, and can guarantee that the variation of line bundle relation does not exert an influence to access device yet.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (14)

1, a kind of layer two control L2C method of supporting line bundle is characterized in that, comprising:
The L2C agency obtains line port information or line binding port information in the message that receives;
The L2C agency carries out the mutual conversion of described line port information and line binding port information according to line port information of having stored and the line bundle mapping relations between the line binding port information.
2, according to the layer two control L2C method of the support line bundle of claim 1, it is characterized in that described line bundle mapping relations are pre-configured in the L2C agency.
3, according to the layer two control L2C method of the support line bundle of claim 1, it is characterized in that, described line bundle mapping relations are the many-to-one mapping relations of line port information to line binding port information, or line binding port information is to the mapping relations of the one-to-many of line port information.
According to the L2C method of the support line bundle of claim 1, it is characterized in that 4, described message comprises control message or data message, described control message comprises L2CP message or AAA message, and described data message comprises DHCP or PPPoE message.
According to the L2C method of the support line bundle of claim 1, it is characterized in that 5, described line port information comprises physical port sign or logic port sign and/or corresponding M AC address; Described line binding port information comprises line bundle port-mark and/or corresponding M AC address.
6, a kind of layer two control L2C agent apparatus is characterized in that, comprise message receiving element, mapping relations memory cell, mapping conversion processing unit, packet sending unit, wherein:
The message receiving element receives message;
The mapping relations memory cell is used for the line bundle mapping relations information between storage line road port and the line bundle port;
The mapping conversion processing unit is used for the mapping relations information of preserving according to described mapping relations memory cell, and the line port information or the line binding port information of the message that receives in the described message receiving element are carried out conversion process;
Packet sending unit sends the message after the described mapping conversion processing unit conversion process.
According to the L2C agent apparatus of claim 6, it is characterized in that 7, described line port information comprises physical port sign or logic port sign and/or corresponding M AC address; Described line binding port information comprises line bundle port-mark and/or corresponding M AC address.
8, according to the L2C agent apparatus of claim 6, it is characterized in that, described line bundle mapping relations are the many-to-one mapping relations of line port information to line binding port information, or line binding port information is to the mapping relations of the one-to-many of line port information.
9, a kind of communication system is characterized in that, comprises first equipment, second equipment and layer two control L2C agent apparatus, wherein:
First equipment sends the message that comprises the message of line port information or comprise line binding port information;
The L2C agent apparatus carries out the mutual conversion of described line port information and line binding port information according to the line bundle mapping relations of having stored;
Second equipment receives described message after the conversion of L2C agent apparatus.
According to the communication system of claim 9, it is characterized in that 10, described line port information comprises physical port sign or logic port sign and/or corresponding M AC address; Described line binding port information comprises line bundle port-mark and/or corresponding M AC address.
According to the communication system of claim 9, it is characterized in that 11, described first equipment comprises access node AN, described second equipment comprises BAS Broadband Access Server BRAS or wideband network gateway BNG or service provider ISP equipment; Or described second equipment comprises AN, and described first equipment comprises BRAS or BNG or ISP equipment.
According to the communication system of claim 9, it is characterized in that 12, described L2C agent apparatus is provided with separately or is integrated in first equipment or second equipment.
According to the communication system of claim 9, it is characterized in that 13, first equipment is far-end AN, the L2C agent apparatus is integrated in AN inside, and second equipment is BRAS or BNG or ISP equipment.
14, according to claim 9,11 or 13 communication system, it is characterized in that, described system further comprises the interconnecting function unit between the described L2C agent apparatus and second equipment, and described interconnecting function unit transmits mutual information between the described L2C agent apparatus and second equipment by layer two control messages.
CN200710124638.6A 2007-11-15 2007-11-15 L2C (layer 2 control) proxy method, apparatus and system Pending CN101437013A (en)

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PCT/CN2008/073068 WO2009065349A1 (en) 2007-11-15 2008-11-14 Layer 2 control proxy method, device and system

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CN101997904A (en) * 2009-08-21 2011-03-30 华为技术有限公司 Session distinguishing method and session distinguishing equipment

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US6115385A (en) * 1998-03-11 2000-09-05 Cisco Technology, Inc. Method and system for subnetting in a switched IP network
CN100417133C (en) * 2005-01-17 2008-09-03 华为技术有限公司 Ethernet link converging method
CN101022394B (en) * 2007-04-06 2010-05-26 杭州华三通信技术有限公司 Method for realizing virtual local network aggregating and converging exchanger

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* Cited by examiner, † Cited by third party
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CN101997904A (en) * 2009-08-21 2011-03-30 华为技术有限公司 Session distinguishing method and session distinguishing equipment
CN101997904B (en) * 2009-08-21 2013-10-09 华为技术有限公司 Session distinguishing method and session distinguishing equipment

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Application publication date: 20090520