CN101120546B - Method and nodes for handling broadcast messages over an access domain - Google Patents
Method and nodes for handling broadcast messages over an access domain Download PDFInfo
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Abstract
The present invention relates to a method and nodes for performing bridging of data traffic over an access domain. For doing so, for data traffic received at an access node from a first user domain and destined to a second user domain, the access node identifies a service binding corresponding to the received data. Then, the access node tunnels the data traffic in a Unicast message addressed to an access edge node in accordance with the identified service binding. The tunnelled data traffic is then forwarded to the access edge node. The access edge node receives the tunnelled data traffic, and identifies the service binding corresponding to the received tunnelled data traffic. The access edge node then proceeds with redirecting the tunnelled data traffic to a second access node in accordance with the identified service binding therein. The redirected tunnelled data traffic is received at a second access node, where it is detunnelled and forwarded to the second user domain. The method also provides an access node and an access edge node for performing the invention.
Description
At 35U.S.C.S.119 (e) ﹠amp; 37C.F.R.S.1.78 under prioity claim
This non-temporary patent application requires the priority of the U.S. Provisional Patent Application of previous " multinomial order (Poly project) " and " access node-fringe node multiple agreement (AEP) (Acess node-edge nodecomplex protocol) " by name, these two temporary patent applications are respectively with Sylvain Monette, Mathieu Giguere, the name of Martin Julien and Benoit Tremblay was submitted on February 14th, 2005, has application number 60/651,971, with with Sylvain Monette, Mathieu Giguere, the name of MartinJulien and Beneit Tremblay was submitted on April 25th, 2005, has application number 60/674,307.
Technical field
The present invention relates to use service binding to handle the method and the node of the broadcast on the input field.
Background technology
Seen the flourish of Internet protocol (IP) network in recent years.Its initial exploitation is used for allowing the teachers and students of university to communicate by letter in research project with the researcher and cooperates, and it has grown into the network with mass market.Nowadays, having for family and being connected of IP network, so that surfing on the World Wide Web (WWW), play interactive game, transmit IP phone, file in download and software, carry out e-commerce transaction etc., is very usual.
With reference now to Fig. 1,, the example of the current techniques of its expression IP network 100.Usually, IP network comprises input field 115, network service provider domains 140 and application service provider domains 150.Input field 115 comprises access node (AN) 120 and access network 130, such as IP network.AN120 is Network Provider, and it is provided to the access of IP network 130 can for user domain 110.User domain 110 comprises, for example subscriber equipment (UD) (such as computer, mobile phone, personal digital assistant etc.), Local Area Network and WLAN (wireless local area network) (W-LAN).User domain may technology be communicated by letter with AN by multiple.Can find that in these technology dial-up connection is connected with asymmetric distribution subscribe lines on the telephone wire, the cable modem on the camera cable network connects or radio communication.Access network 130 comprises one group of stand alone exchange and/or router, and its task is that the data communication that will enter is carried out route based on the destination-address that wherein embeds.As for network service provider domains 140, they can for example IP phone service of correspondence, and application service provider domains 150 can corresponding e-bank and e-commerce transaction.
Although Fig. 1 shows three user domain, two access nodes, two service provider domain and two application service territories, IP network 100 generally includes thousands of user domain, dozens of access node, hundreds of service provider domain and application service provider domains.About access network 130, run into the network that comprises hundreds of routers usually.Thereby, being interpreted as purpose clearly, Fig. 1 shows the IP network of highly simplifying 100.
Initial principle on the IP network basis is to depend on switch and router, and it carried out the least possible and little operation before the data communication that will enter is routed to their final purpose ground.For this reason, different types of message is available: unicast messages, multicast message and broadcast.For these three kinds of message each, be every type of distribution of messages address realm.Unicast messages is used for exchanging messages between a sender and a recipient.Multicast message allows a sender to arrive a plurality of recipients.For broadcast, they are used to arrive all switch segments of the same section of IP network.
More specifically, produce broadcast, and their special feature is the following fact,, this broadcast resend all switches known to this recipient's switch in case receive broadcast at one of switch of network by user domain.Therefore, in the huge like this IP network that is thousands of user domain services, broadcast may become important trouble, has a strong impact on the performance of IP network.
At present for IP network on subscriber equipment quantity and provide the relevant problem of service supplier's the growth of quantity of service also not have known solution.In addition, also do not identify long-term solution to provide practical solution to the potential trouble that causes for the broadcast on the large-scale IP network of thousands of user domain services.
Therefore, should readily recognize that to be used for handling broadcast and can making the method for network over loading and node necessarily effectively be favourable in order to overcome the defective and the weakness of existing solution, to have.The invention provides such method and node.
Summary of the invention
The present invention by in unicast messages with the broadcast tunnel to reduce the traffic that produces by broadcast mechanism and broadcast, effectively allow thousands of user domain and access node to handle broadcast on the input field.
For this reason, method of the present invention is handled broadcast on the input field by receiving from the broadcast of user domain from user domain at access node.Then, this method continues to intercept the broadcast that receives at access node, and with unicast messages the broadcast that receives is forwarded to the edge node for access of this input field, thereby intercepts this broadcast mechanism.
Another aspect of the present invention relates to the edge node for access of the broadcast that is used to handle the tunnel of transmitting on input field.Edge node for access comprises input unit, control unit and broadcasting processor.Input unit receives message.Control unit is discerned the broadcast which message is tunnel according to the message that receives on input unit.Broadcasting processor goes the broadcast of the tunnel that tunnel (detunnel) discerned and the broadcast that tunnel is gone in processing.
On the other hand, the invention still further relates to the access node that is used to handle from the broadcast of user domain reception.Access node comprises input unit, control unit, broadcasting processor and output unit.Input unit receives the message from user domain.Which message control unit discerns according to the message that receives is broadcast.Broadcasting processor is each broadcast of being discerned of tunnel in unicast messages, and the destination of this unicast messages is an edge node for access, and output unit sends this unicast messages.
Description of drawings
In order to understand the present invention in more detail, and other purpose of the present invention and advantage, can be with reference to description, wherein below in conjunction with accompanying drawing
Fig. 1 is the example of the current techniques of IP network.
Fig. 2 shows wherein the schematic diagram in conjunction with network of the present invention.
Fig. 3 is the simplified flow chart that is used to handle the method for broadcast according to the present invention.
Fig. 4 is schematically showing according to the edge node for access of the present invention's instruction.
Fig. 5 a represents according to the example table of the content of service broker's of the present invention management and control unit.
Fig. 5 b represents according to the example table of the content of the service binding host unit of the present invention's instruction.
Fig. 6 is schematically showing according to the access node of the present invention's instruction.
Fig. 7 is the diagram of the modification carried out on the broadcast of upper reaches according to the present invention.
Embodiment
Below with reference to different example embodiment novel teachings of the present invention is described.However, it should be understood that this class embodiment only provides the example of some favourable purposes of novel teachings of the present invention.In general, the statement in specification of the present invention do not limit of the present invention any claimed aspect.And some statements may be applicable to some inventive features, and are not suitable for further feature.In the accompanying drawings, similar or components identical all is appointed as identical reference marker in the accompanying drawings.
The invention provides method and the node of handling the broadcast in the input field.For this reason, according to instruction of the present invention, access node and edge node for access are applicable to and allow effectively transmission broadcast.More particularly, in the present invention, the broadcast that sends from user domain is received and intercepting at access node.Access node is the tunnel broadcast in unicast messages, and this unicast messages is sent to edge node for access.Thereby broadcast is not to be broadcasted by whole input field, but from this input field their entrance, promptly access node is intercepted and is directly sent to edge node for access, thereby reduces the traffic that broadcast produces on input field.The present invention also provides in the broadcast of edge node for access identification tunnel and has gone their ability of tunnel, thereby allows edge node for access correctly to handle them.
According to another possibility embodiment of the present invention, access node and edge node for access can also management service be bound so that arrange the data communication on input field between them.More particularly, for this reason, the edge access node comprises service agent unit, service agent unit management and control service broker.Each service broker is corresponding to a service provider domain, and thereby management and control input field on Virtual Local Area Network.Therefore, no matter when user domain is wished and service supplier's field communication selecting, and service request related message is sent to this edge node for access.Service request related message comprises the information of one of identification service provider domain and one of user domain.Whether edge node for access determines one of service broker corresponding to the service provider domain that is identified in the service request related message, and if like this, then creates service binding for this service request related message that receives.One of this service binding identification service agency, user domain information and input field transmission primitive.Then, notify the establishment of this service binding to the access node of serving this request user domain, and carry out enforcement at this access node and edge node for access, so that according to the data communication of the service binding polymerization of being created (aggregation) between them to service binding.Therefore, according to this other embodiment, when receive at access node from the broadcast of one of user domain during corresponding to service binding having set up, the broadcast of tunnel comprises the identifier corresponding to the service broker, thereby allows edge node for access to handle the broadcast of this tunnel quickly.In addition, this embodiment also allows user network is isolated from each other, to guarantee privacy.
Following paragraph will provide the more detailed explanation to method of the present invention, edge node for access and access node, and how they handle broadcast so that alleviate the overload of input field in environment of the present invention.
In order to understand the mechanism of the present invention and its innovation, with reference now to Fig. 2, Fig. 2 shows the schematic diagram that has wherein combined network 200 of the present invention.For clarity, schematically showing of network 200 simplified, and each element of drawing is according to the similar functions grouping, rather than the network entity on the expression geographic significance.But function usually can be corresponding to carrying out these specific functions like every category, but a plurality of physical network entity of in network 200, disperseing geographically.Schematically showing of network 200 comprises user domain 110, input field 115 (comprising access node 120, access network 130, edge node for access 160 and regional network 135), Internet service provider 140 and application server 150.In the paragraph below, will continue, provide detailed description and example in these elements each with reference to figure 2.
The 2nd layer: Ethernet, asynchronous transfer mode;
The 3rd layer: Internet protocol (IP) edition 4 and 6;
The 4th layer and the 5th layer: transmission control protocol (TCP) and User Datagram Protoco (UDP) (UDP);
The 6th layer and the 7th layer: various expressions and application protocol existing and that occur in the future.
The purpose that the protocol list that it should be understood that provides top is just demonstrated is in any case neither limit the agreement that the present invention supports.
With reference now to input field 115,, can be to be provided at end between user domain 110 and Internet service provider 140 and the ASP 150-with its functional overview to-device that termination is gone into.Input field comprises access node 120, access network 130, regional network 135 and edge node for access 160.Thereby input field 115 itself is not an entity; It but the set of parts, direct or indirect when these parts, physically wireless or electrical interconnection is together the time, and it serves as the territory that access is provided, thereby its name is " input field ".Thereby should be clear, the current expression of input field 115 includes only an access node 120, access network 130, an edge node for access 160 and a regional network 135 and does not mean that these entities have only one in input field, but only shows such entity for purpose clearly.Following paragraph will be explained the different parts of input field more in detail.
Input field also comprises access network 130 and regional network 135, will discuss together it.The major function of access network 130 and regional network 135 provide end between access node 120 and Internet service provider 140 and ASP 150-to-end and independently transmission.Access network 130 and regional network 135 are to carry out the network of following task, such as: the data communication of polymerization, exchange and route downstream and upstream.Access network 130 preferably can use Ethernet, or corresponding to other similar agreement of the 2nd layer of osi model, but be not limited thereto.Advantageously, also can support layer-3 protocol, for example IPv4 and/or IPv6.Regional network 135 is preferred supports Ethernets and/or IP and MPLS and may other layer-3 protocol.In addition, should be realized that access network 130 and regional network 135 can be by operators or by operation of many different operators and/or management.
The responsibility of edge node for access 160 is as the central type entrance that is used for a plurality of Internet service providers 140 and ASP 150 on the input field 115.According to an alternative embodiment of the invention, edge node for access also is responsible for establishment, management and host (host) service broker 170 and service binding (not shown among Fig. 2, as still to figure 4 illustrates).Each of service broker 170 is corresponding to one of service provider domain (140 or 150), and the therefore VLAN on management and the control access network 130.Statement " service binding " refers to the binding between one of one of user domain 110 and network service provider domains 140 or application service provider domains 150.The notion of edge node for access and service broker and service binding will be described in more detail with reference to figure 4,5a and 5b in specification.
ASP 150 uses input field 115 supplies and delivery applications to give the terminal use of user domain 110.Examples of applications comprises recreation, video on demand, video conference and many other may use like this.But on behalf of ASP's distributing IP address, input field 115 give user domain 110.If necessary, ASP 150 also can carry out the checking of user class, and necessary words are carried out mandate.Should be realized that, in the explanation in front, statement " service supplier " and " service provider domain " will be used alternatingly represents Internet service provider 140 and ASP 150 simultaneously, and statement " service supplier " will be represented one of Internet service provider 140 or ASP 150.
With reference now to Fig. 3,, the figure shows the simplified flow chart that is used to handle broadcast according to the present invention.Method of the present invention is handled the broadcast on the input field 115 that sends from user domain 110.Below to the explanation of this method at be a broadcast, but in environment of the present invention, can handle the some broadcasts that receive from one or more user domain 110 simultaneously, and this method while or the non-performed step of each broadcast of handling are simultaneously represented in the processing of single broadcast message or rather.This method receives broadcast from step 300 at access node 120.In step 310, this method continues the intercepting broadcast.Broadcast is intercepted by access node 110, thereby so that avoids broadcast further to broadcast the switch of increase input field 115 and/or the load of router on input field 115.Subsequently, in step 320, access node 120 is revised this broadcast.More specifically, access node 120 is revised the destination-address of this broadcast.Known as current techniques, in IP network, use the address to represent that desampler/router is a broadcast.Under the situation of IP, represent that this message is that the destination-address of broadcast is address (255.255.255.255).Thereby when receiving node received the message with L3 destination-address (255.255.255.255), it knew that automatically the message that receives is broadcast.But, in step 320 of the present invention, revise destination-address, so that three low order bytes of this address are corresponding to access node identifier (16 bit) with receive the user port number (8 bit) of this broadcast thereon.
This method continues step 330 alternatively.Step 330 is carried out in the network corresponding to second embodiment of the invention, that is, and and when edge node for access and access node can the service implementation bindings.Network 200 can not handle with service implementation binding in, do not carry out the step 330 of this method.Thereby, under network 200 situations, discern corresponding service broker according to the second embodiment of the present invention.Can discern corresponding service broker based on the service binding information of wherein storage at access node 110, and use user port information to determine for whether having service binding from the user port that wherein receives this broadcast.
Then, this method continues step 340, wherein with the broadcast tunnel of revising.For this reason, in unicast messages with service broker's tunnel of revising.Given this unicast messages is corresponding to the destination-address of the address of edge node for access 160, and corresponding to the source address of access node, and the service broker's that will discern corresponding to step 330 value gives the VLAN tag of this unicast messages.If do not identify the service broker, then access node and edge node for access are not supported this service binding, but Use Defaults.Then, in step 350, the broadcast with the modification of tunnel on access network 130 sends to edge node for access 160.In step 360, receive the broadcast of the modification of this tunnel at edge node for access 160.Afterwards, edge node for access 160 is determined the broadcast that this message that receives is the modification of tunnel, and goes tunnel partly and handle this message in step 370.
With reference now to Fig. 7,, the figure shows the modification of on broadcast 700, carrying out according to the present invention.As known in the art, broadcast is a upstream traffic.Upstream traffic refers to the communication through input field 115 of sending from user domain 110.Fig. 7 shows the Ethernet broadcast as an example, such as described in international Institute of Electrical and Electric Engineers (IEEE) 802.3ac.Broadcast generally includes following field: destination-address (DA) 710, source address (sa) 720, type 730, VLAN mark 740 and user data 750.Destination-address 710 refers to dedicated ethernet MAC Address (255.255.255.255), and it is broadcast that this message is indicated in this address, and comprises 6 bytes.Source address 720 these broadcasts of indication from which ethernet mac address are sent, and comprise 6 bytes.Type field 730 is 2 byte longs.VLAN mark 740 is 4 byte longs, and only refers to destination-address and the known and significant vlan identifier of source address usually.At last, user data 750 changes between 46-1500 byte, and comprises the data that send to destination-address 710 from source address 720.Under the particular case of broadcast, user data 750 expressions are by the data of network 200 broadcasting.
As previously mentioned, broadcast 700 is from subscriber equipment 110, and makes amendment via network in environment of the present invention.Subscriber equipment 110 produces broadcast 700a, wherein: destination-address 710 is corresponding to the broadcasting MAC Address, source address 720 is subscriber equipment MAC Address, and VLAN mark 740 is corresponding to the local service identifier of subscriber equipment, and user data 750 is corresponding to the data that will pass through input field 115 broadcasting.The broadcast 700a that is produced by subscriber equipment 110 is sent out, and is received by access node 120, because of its destination-address it is identified as broadcast at this, and to its intercepting.Access node carried out some modifications before transmitting this broadcast by access network 130.More specifically, revise destination-address 710 to replace three lower-order bytes, make it corresponding to the access node identifier of 16 bits with receive the user port number with 8 bits of this broadcast thereon, 700b is represented as broadcast.Then, tunnel or encapsulate the broadcast of this modification in unicast messages.This unicast messages has corresponding to the destination-address of the MAC Address of edge node for access with corresponding to the source address of access node MAC Address.Unicast messages 700c also comprises type, and type is represented Ethertype identifier (it is a retention), indicates this unicast messages to comprise broadcast.At last, under the situation of the second embodiment of the present invention, the VLAN tag field of unicast messages 700c comprises service agent identifier, perhaps comprises a default value under the not existing service binding situation corresponding with current user port number.Subsequently, send unicast messages 700c by access network 130.
With reference now to Fig. 6,, this figure is schematically showing according to an access node of the present invention's instruction.Because the position of access node is in input field 115, access node 120 comprises and is used for the input field I/O unit 610 of communicating by letter with edge node for access 160 with the access network 130 of input field 115.Access node 120 also comprises and is used for the user domain I/O unit 620 of communicating by letter with user domain 110.Access node 120 also comprises control unit 630 and broadcasting processor 690.If necessary, access node 120 can also comprise the parts such as bridge-jointing unit 640, conversion table 650, retransmission unit 660, regulon 670 and polymerized unit 680, so that can carry out the operation of being carried out by access node usually.The various parts of access node can comprise specialized hardware, combination hardware or software,, their interconnection are so that allow access node correctly to work.
User domain I/O unit 620 receives many dissimilar message, such as the broadcast of 420 expressions.Broadcast enters user domain I/O unit 620 at one of user port of user domain I/O unit 620.User domain I/O unit 620 arrives control unit 630 with the forwards that receives, control unit 630 determines that this message that receives 420 is broadcasts, and this message that receives is forwarded to broadcasting processor 690 together with the information which user port about user domain I/O unit 620 receives this message 420.With reference to as described in Fig. 7, broadcasting processor 690 continues to revise these broadcasts, and transmits this message via input field I/O unit 610 with unicast messages as preceding.
As previously mentioned, the second embodiment of the present invention depends on the notion of service binding, and service binding is used to arrange the data communication on the input field 115.Second embodiment for a better understanding of the present invention provides the concise and to the point description to concept of service bindings now.Service binding is created at edge node for access 160, in order to manage transmission relation and to communicate by letter.Each service binding is set up between one of one of user domain and service supplier, and directly influences one of service broker 170 of this serving access node 120 and edge node for access 160.In concept, create service binding and add VLAN corresponding to the service provider domain on the input field to corresponding to the user domain that will be discerned, this VLAN is managed by described edge node for access.For each VLAN, create a service broker at this edge node for access by the edge node for access management.Thereby each service binding can be represented tradable business entity, the transmission of respective service between specific user's port that this Business Entity guarantees at user domain with correct integrality and QoS and service supplier's the specific provider ports.Service binding establishment in edge node for access, management and host, and federated service agency 170 exists.
Thereby, according to the second embodiment of the present invention, polymerized unit 680 hosted service of access node 120 binding relevant information.Related information for service bindings comprises special services binding information (with the form of service broker's identity and COS), the sign of the access node port of reception service request related message and the LAN environment of user domain.Based on this information, polymerized unit 680 might provide the service broker's identity corresponding to the user port identity that receives this broadcast thereon.Thereby broadcasting processor 690 also directly or via control unit 630 is communicated by letter with polymerized unit 680, with acquisition service broker identity, thereby as previously mentioned this service broker's identity is combined in the described unicast messages.
With reference now to Fig. 4,, the figure shows schematically showing according to the edge node for access of the present invention instruction.Edge node for access 160 comprises input field I/O unit 410, control unit 450 and broadcasting processor 495.Input field I/O unit 410 receives the broadcast 700c that has revised of tunnel.The message 700c that receives is forwarded to control unit 450.In case control unit 450 correctly goes the message 700c that receives to tunnel, transfers it to broadcasting processor 495 and suitably handles.Control unit 450 also involves (implicate) broadcasting processor 495.Input field I/O unit 410, control unit 450 and broadcasting processor 495 can be the hardware or the software of independently hardware, combination, and directly or indirectly communication each other.
Under the situation of the second embodiment of the present invention, edge node for access also comprises network/application service provider territory I/O unit 430, and this unit is used for communicating by letter with ASP 150 with Internet service provider 140 by regional network 135.In addition, edge node for access 160 comprises service agent unit 440, control unit 450, and can comprise conversion table 460, retransmission unit 470 and regulon 480.
Service agent unit 440 comprises service broker's management and control unit 442 and service binding host unit 444.Service agent unit 440 keeps existing service broker's 170 information in service broker's management and control unit 442.Next service broker's management and control unit 442 are responsible for the establishment and the management of service binding 446.For this reason, service broker's management and control unit 442 determine when and need new service binding 446 or when existing service binding can be removed, and carry out the establishment/removal to service binding 446.Service broker's management and control unit 442 also are responsible for to existing service binding interpolation/removal subscriber equipment.In addition, service broker's management and control unit 442 also be responsible for to guarantee the synchronism of service binding 446 relevant informations and the access node mutual with it.
With reference to figure 4, simultaneously with reference to figure 5a, Fig. 5 a represents that the example table of the content of service broker's management and control unit 442 represents.Fig. 5 a is except first row each row (header line), and expression is by some service brokers' 170 of service broker's management and control unit 442 management and control exemplary content.Each row of Fig. 5 a are the customizing messages that each service broker 170 safeguards corresponding to management and the control unit 442 by the service broker.Service broker 170 sign is shown in first tabulation.This sign is normally corresponding to service broker's number or service agent identifier.According to the preferred embodiments of the present invention, each service broker in edge node for access has the unique service agent identifier, and corresponding to a specific service provider domain 140 or 150.Secondary series refers to the sign of corresponding service broker's particular type of service.For example, provide under the situation of a plurality of services in a service provider domain 140 or 150, each service that is provided is relevant with different COS, so that distinguish between the various services of service provider domain.The 3rd row are designated this service provider domain and carry out the required preferred or necessary service quality (QoS) of correct data communication with relevant COS.The exemplary criteria of QoS comprises delay, the error rate, bandwidth and preferred protocol.The 4th row indication in regional network with the corresponding service provider domain employed port of communicating by letter.Except these contents, service broker's management and control unit 442 comprise that enough logic softwares and hardware creates additional service broker and remove unnecessary service broker.Should be realized that although express service broker's the management and the content of control unit with the form of form in Fig. 5 a, such content is not limited thereto.Service broker's management and control unit can comprise relational database, hard coded components, microprocessor and programming library etc.
With reference now to Fig. 5 b and Fig. 4,, Fig. 5 b represents that the example table of the content of service binding host unit 444 represents.The exemplary content of some service bindings 446 of each line display service binding host unit 444 hosts of Fig. 5 b except header line.Each row among Fig. 5 b are corresponding to the customizing messages that is used for each service binding 446 of the host of institute in the service binding host unit 444.First tabulation is shown by using for example respective service agency's of service broker's service agent identifier sign.Secondary series identification service type is as described about Fig. 5 a.The transmission primitive (primitive) of the data communication relevant with service binding is shown in other tabulation.More specifically, the 4th row identifying user territory medium access control (MAC) address.The 4th row are included in the sign of the port that user domain uses on the serving access node.Any identifier of local area network (LAN) that the 5th row use corresponding to user domain, and can comprise for example implicit expression or explicit vlan information.The 6th row refer to the virtual mac address of the access node of serving this user domain.Thereby each service binding 446 binds together one of one of one of service broker, user domain and access node and is used for providing data communication between a user domain and service provider domain 140 or 150.Should be noted that although show the content of service binding host unit 444 with the form of form in Fig. 5 b, such content is not limited thereto.The service binding host unit can comprise relational database, hard coded components, microprocessor and programming library etc.
In addition, the service binding host unit may further include the 7th row, and these row comprise unique identification user domain or its user device IP address.This unique ip address can use the broadcast mechanism that for example can carry out by edge node for access by the agreement such as dynamic host's configuration protocol (DHCP) before service request information, offer user domain or subscriber equipment.Thereby it is a kind of with the message and the quick related better way mode of correct service binding that arrive that the combination of service agent identifier and user domain or subscriber equipment unique ip address provides.Usually, in case created service binding, and with this notice access node, and data communication on input field according to this service binding polymerization, before then the information that provides in using the service binding host unit is forwarded to corresponding service provider domain with data communication, the data communication decomposition (disaggregate) of the polymerization that will receive at edge node for access.More particularly, at input field is under the situation of Ethernet, for example, provide service agent identifier, simultaneously in the embedded IP message of Ethernet message, provide user domain or user equipment (UE) IP address in being called in the VLAN tag field of clean culture, multicast and broadcast.Based on the service agent identifier that in the VLAN of Ethernet message tag field, provides, with the IP address that in the IP message that embeds, provides, service agent unit 440 can be decomposed described data communication, and guarantee it is forwarded to corresponding service provider domain, and comprise necessary information, such as user MAC information and its LAN environment about the user domain that sends.
Then, by the service bindings related message 490 that is sent by input field I/O unit 410, control unit 450 is notified to access node with the establishment of service binding 446, and this access node is to serve for the user domain that identifies in the service request related message.Control unit 450 is also mutual with conversion table 460.Because each service broker 170 of service broker's management and control unit is by the service agent identifier unique identification, so must remain in conversion table corresponding to service broker 170 service agent identifier and the mapping between the corresponding service provider domain (140 or 150).Thereby in case receive data communication at input field I/O unit 410, it has destination-address corresponding with the virtual mac address of edge node for access 160 and the VLAN mark corresponding with one of service agent identifier, control unit 450 consulting conversion tables 460 obtain from the edge node for access virtual mac address to the VLAN mark the quick conversion of the corresponding destination of service agent identifier service provider domain (the 140 or 150) address that provides.
At last, control unit 450 can be also mutual with regulon 480, carry out downstream/upstream traffic control (policing), the comment that makes marks, communicates by letter in the data communication that regulon can be received on input field I/O unit 410 and network/application service provider territory I/O unit 430, indicated or demand as the service broker 170 of correspondence.
Be appreciated that modification that broadcast is carried out only to access node 120 and edge node for access 160 as seen.Modification to broadcast is transparent for subscriber equipment 110 and access network 130.This modification is feasible, because carry out self adaptation at access node 120 and edge node for access 160.The result of this modification can reduce owing to enter input field from broadcast and begin to they interceptings with in order to handle at edge node for access and to carry out the data traffic that system forwards causes with unicast messages.
Although for example understand the several preferred embodiments of method of the present invention and node in the detailed description of accompanying drawing and front, but should be appreciated that to the invention is not restricted to disclosed embodiment, but under the situation that does not depart from the spirit of the present invention of describing and limiting by claims, can carry out multiplely rearranging, revising and replace.
Claims (13)
1. method that is used to handle the broadcast on the input field, this method may further comprise the steps:
-in the broadcast of access node reception from user domain, this broadcast comprises that the MAC Address of user domain is as source address; And
-the broadcast that receives of intercepting on access node; And
-broadcast that receives is forwarded to the edge node for access of this input field with unicast messages;
-wherein this forwarding step is included in the broadcast of this intercepting of tunnel in the unicast messages; With
-wherein this unicast messages has the source address corresponding to the MAC Address of this access node; And
-wherein the broadcast of tunnel has destination-address in unicast messages, and this destination-address is the broadcasting MAC Address that is modified to the user port number that comprises access node identifier and access node.
2. according to the described method of claim 1, wherein said unicast messages has the destination-address corresponding to the address of described edge node for access.
3. according to the described method of claim 1, wherein said unicast messages has the VLAN tag field of the default value of discerning corresponding to edge node for access.
4. according to the described method of claim 1, further comprising the steps of:
-create service binding at edge node for access, by entrusting in the mode of the data communication on input field between managing user domain and the edge node for access is the access node and the edge node for access of user domain service, and service binding props up the data communication that fits between user domain and the edge node for access;
-service binding of being created is notified to access node into the service of described user domain; And
-implement the service binding created at this access node and edge node for access by following measure:
-with unicast messages the broadcast that is received is forwarded to this edge node for access, wherein
The destination-address of-this unicast messages is the edge node for access MAC Address; And
The VLAN tag field of-this unicast messages is the service agent identifier corresponding to the service binding of being created.
5. edge node for access that is used to handle the broadcast of the tunnel of on input field, transmitting, this edge node for access comprises:
-be used to receive the input unit of message;
-control unit is used for being identified in the broadcast of unicast messages tunnel and going the broadcast of the tunnel that tunnel discerns according to the message that receives, and described broadcast has the source address corresponding to the subscriber equipment MAC Address;
-be used to handle the broadcasting processor of the broadcast of tunnel;
-wherein each of the broadcast of tunnel has destination-address in unicast messages, and this destination-address is the broadcasting MAC Address that is modified to the user port number that comprises access node identifier and access node.
6. the described edge node for access of claim 5, wherein said unicast messages has the destination-address corresponding to the address of edge node for access.
7. the described edge node for access of claim 5 also comprises:
-be used to create the service agent unit of service binding, this service binding props up and fits over the data communication on the input field between user domain and the edge node for access, and this service binding is entrusted to the access node of described user domain service and described edge node for access and handled the communication on input field between them;
Wherein control unit also is notified to access node into described user domain service by output unit with the establishment of this service binding;
The broadcast of the tunnel of being discerned comprises service agent identifier;
Described broadcasting processor is handled the broadcast of going tunnel based on the described service agent identifier that comprises.
8. the described edge node for access of claim 7, wherein unicast messages has the destination-address corresponding to the address of described edge node for access.
9. the described edge node for access of claim 7 wherein comprises service agent identifier in the VLAN tag field of described unicast messages.
10. access node that is used to handle the broadcast that receives from user domain, this access node comprises:
-be used for from the input unit of user domain reception message;
-be used for control unit according to the message that received identification broadcast;
-broadcasting processor is used for the broadcast in each identification of unicast messages tunnel, and the destination of this unicast messages is an edge node for access, and this unicast messages comprises the source address corresponding to the MAC Address of access node; With
-be used to send the output unit of the broadcast of tunnel;
-wherein each of the broadcast of tunnel has destination-address in unicast messages, and this destination-address is the broadcasting MAC Address that is modified to the user port number that comprises access node identifier and access node.
11. the described access node of claim 10, wherein said unicast messages comprises the destination-address corresponding to edge node for access.
12. the described access node of claim 10, wherein:
-input unit further receives related information for service bindings;
-access node also comprises:
-being used for the polymerized unit of stores service binding relevant information, related information for service bindings comprises service agent identifier.
13. the described access node of claim 12, wherein broadcasting processor further is included in one of service agent identifier in the VLAN tag field of unicast messages in the broadcast of tunnel.
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| US60/674,307 | 2005-04-25 | ||
| US11/349,997 US20060184694A1 (en) | 2005-02-14 | 2006-02-09 | Method and nodes for handling broadcast messages over an access domain |
| US11/349,997 | 2006-02-09 | ||
| PCT/IB2006/050451 WO2006085286A1 (en) | 2005-02-14 | 2006-02-10 | Method and nodes for handling broadcast messages over an access domain |
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| CN2006800048432A Expired - Fee Related CN101120554B (en) | 2005-02-14 | 2006-01-27 | Method and nodes for aggregating data traffic through unicast messages over an access domain using service bindings |
| CN2006800048428A Expired - Fee Related CN101120546B (en) | 2005-02-14 | 2006-02-10 | Method and nodes for handling broadcast messages over an access domain |
| CN2006800048131A Expired - Fee Related CN101120544B (en) | 2005-02-14 | 2006-02-14 | Method for executing data communication bridging over an access domain and nodes therefor |
| CNA2006800048199A Pending CN101120545A (en) | 2005-02-14 | 2006-02-14 | Method and nodes for handling multicast messages |
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| CN2006800048432A Expired - Fee Related CN101120554B (en) | 2005-02-14 | 2006-01-27 | Method and nodes for aggregating data traffic through unicast messages over an access domain using service bindings |
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| CNA2006800048199A Pending CN101120545A (en) | 2005-02-14 | 2006-02-14 | Method and nodes for handling multicast messages |
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| CN102265566B (en) * | 2008-10-23 | 2014-10-15 | 法国电信公司 | Method for configuring parameters for managing data packets pertaining to data flow |
| CN103179044B (en) * | 2011-12-23 | 2016-08-17 | 北京网康科技有限公司 | The implementation method of traffic management, equipment and system |
| US20140207928A1 (en) * | 2011-12-29 | 2014-07-24 | Intel Corporation | Providing Different Levels of Service Over a Storage Transport |
| US10503654B2 (en) | 2016-09-01 | 2019-12-10 | Intel Corporation | Selective caching of erasure coded fragments in a distributed storage system |
| CN112019604B (en) * | 2020-08-13 | 2023-09-01 | 上海哔哩哔哩科技有限公司 | Edge data transmission method and system |
| CN114004174B (en) * | 2021-10-29 | 2023-08-25 | 中船奥蓝托无锡软件技术有限公司 | Efficient host unit searching method suitable for multiple sets of complex grid coupling CFD (computational fluid dynamics) calculation |
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| JP3478218B2 (en) * | 1999-12-27 | 2003-12-15 | 日本電気株式会社 | Edge node exchanges and exchanges |
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- 2006-01-27 CN CN2006800048432A patent/CN101120554B/en not_active Expired - Fee Related
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| US6269404B1 (en) * | 1995-07-14 | 2001-07-31 | 3Com Corporation | Virtual network architecture for connectionless LAN backbone |
| CN1500355A (en) * | 2001-01-30 | 2004-05-26 | 马科尼英国知识产权有限公司 | Partially interconnected networks |
| WO2003067821A1 (en) * | 2002-02-08 | 2003-08-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system relating service providers to clients, in an access network, using dynamically allocated mac addresses |
Also Published As
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| CN101120554B (en) | 2010-09-29 |
| CN101120553A (en) | 2008-02-06 |
| CN101120545A (en) | 2008-02-06 |
| CN101120546A (en) | 2008-02-06 |
| CN101120544B (en) | 2010-05-26 |
| CN101120553B (en) | 2010-10-13 |
| CN101120554A (en) | 2008-02-06 |
| CN101120544A (en) | 2008-02-06 |
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