CN104734955A

CN104734955A - Network function virtualization implementation method, wide-band network gateway and control device

Info

Publication number: CN104734955A
Application number: CN201310705655.4A
Authority: CN
Inventors: 张智江; 滕新东
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2015-06-24

Abstract

The invention is suitable for the field of network function virtualization and provides a network function virtualization implementation method, a wide-band network gateway and a control device. The wide-band network gateway BNG receives a message; a service chain is determined to process the message according to the received message, a strategy matched with the determined service chain is looked up from a strategy list, and multi-protocol tag switching MPLS service tags are added to the message; the message added with the MPLS service tags is sent to NFV servers or SPE. Therefore, the tag of each NFV server used for processing the service chain is once and directly added to a message header to enable a front NFV server to forward to a next NFV server after processing the service, continuous processing is achieved, meanwhile, each NFV server does not need to send return to the BNG after processing the service, and furthermore, the occupation of network flow is greatly reduced while the processing efficiency of the service chain is improved.

Description

The virtualized implementation method of network function, wideband network gateway and control device

Technical field

The invention belongs to the virtual field of network function, particularly relate to the virtualized implementation method of network function, wideband network gateway and control device.

Background technology

Produce with the device category of carrier network and rolling up of quantity, be born to need badly and reducingd the construction costs and this technical problem of O&M cost, and then, propose network function virtual (Network Functions Virtualization, NFV) technology for solving this technical problem.Meanwhile, NFV technology can also adapt to the business diversity requirement under cloud computing environment.The general principle of NFV technology is: by Intel Virtualization Technology by the Network function originally needing plurality of devices type (as fire compartment wall, load equalizer etc.), multiple physical equipment Morphogenesis provides, and changes to and uses virtual unit to provide above-mentioned Network function.Like this, the introducing of NFV technology, can realize a physical equipment and support multiple virtual unit; Even, support that a physical equipment fictionalizes the virtual unit of multiple different service types; Thus, can effectively reduce costs, and the object of many tenants demand of support cloud computation data center.

The key point that NFV technology realizes is the process of business chain, and namely how the message carrying business chain received is sent to corresponding NFV server (comprise and run on service processing software on the virtual machine of server and its forwarding plane) according to the order of Business Processing by forwarding unit (such as: wideband network gateway); Demand based on different user/tenant is different, message is sent to corresponding multiple NFV servers (such as: be sent to AAA service server to process this business of user authentication, being sent to firewall services server to process this business of safety filtering) according to the order of business; Until this business chain successively after the NFV server process of correspondence, send to object equipment.

At present for the process of business chain, normal employing mode below: after forwarding unit receives message, identify the business chain that this message is recorded, and then search local forwarding strategy table to inquire the IP address of the NFV server of first service needed access of this business chain of process.By that analogy, after the complete business of each NFV server process, all need the message after by Business Processing to send it back forwarding unit, and then forwarding unit find out the IP address of the NFV server processing next business; And then forwarded the packet to this NFV server by the IP address of the NFV server found successively, complete the process to whole business chain.

Summary of the invention

The object of the present invention is to provide that a kind of network function is virtualized realizes network, with solve prior art use IP address carry out business chain process time, often process a business all to need to find out by forwarding unit the IP address processing next business, cause the problem that the treatment effeciency of business chain is low.

First aspect, the virtualized implementation method of a kind of network function, the virtualized implementation method of described network function comprises:

Wideband network gateway BNG receives message;

Described BNG determines according to the message received the business chain processing described message, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add multiprotocol label switching MPLS service label, wherein, described Policy Table generates and sends to described BNG by control device, described Policy Table is made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business, wherein, label in described MPLS service label comprises: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes,

The message that with the addition of described MPLS service label sends to described NFV server or described SPE by described BNG.

In conjunction with first aspect, in the first possible implementation of first aspect, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second of first aspect is possible, the message that with the addition of described MPLS service label sends to described NFV server or described SPE by described BNG, is specially:

Described BNG sends to the described NFV server or described SPE with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, and described forward-path is: adopt Segment routing technology to set up from described BNG to the described NFV server of outermost tag match described MPLS service label or the path of described SPE.

Second aspect, a kind of wideband network gateway, described wideband network gateway comprises:

Message receiving element, for receiving message;

Message process unit, for determining to process the business chain of described message according to the message received, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add multiprotocol label switching MPLS service label, wherein, described Policy Table generates and sends to wideband network gateway BNG by control device, described Policy Table is made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business, wherein, label in described MPLS service label comprises: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes,

Packet sending unit, for sending the message that with the addition of described MPLS service label to described NFV server or described SPE.

In conjunction with second aspect, in the first possible implementation of second aspect, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second of second aspect is possible, described packet sending unit, specifically for:

Send to the described NFV server or described SPE with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, described forward-path is: adopt Segment routing technology to set up from described BNG to the described NFV server of outermost tag match described MPLS service label or the path of described SPE.

The third aspect, a kind of control device, described control device comprises:

Label distribution unit, for being at least one distributing labels in network function virtual NFV server and the Operator Specific Service edge device SPE that associates with described NFV server;

Policy Table's generation unit, for generating the Policy Table be made up of one or more different strategy, described strategy is: determine to comprise the multiprotocol label switching MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business;

Policy Table's transmitting element, for sending described Policy Table to wideband network gateway BNG.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

Fourth aspect, the virtual NFV server of a kind of network function, described NFV server comprises:

First Service Processing Unit, for receiving the message comprising multiprotocol label switching MPLS service label, then Business Processing is carried out to the message comprising described MPLS service label, remove outermost label in described MPLS service label, the message comprising the described MPLS service label removing outermost layer label is sent to NFV server or Operator Specific Service edge device SPE with new outermost tag match in described MPLS service label, described MPLS service label comprises one or more label, described label is: at least one label in the label of NFV server and the label of Operator Specific Service edge device SPE that associates with NFV server, wherein, the label of described NFV server and the label of described SPE are all that control device distributes, or,

Second Service Processing Unit, for receiving the message comprising MPLS service label that the described SPE that associates with described NFV server forwards, then Business Processing is carried out to the message comprising described MPLS service label, be sent completely the message after Business Processing to described SPE.

In conjunction with fourth aspect, in the first possible implementation of fourth aspect, the label in described MPLS service label also comprises: the label of the wideband network gateway BNG that described control device distributes;

In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the second of fourth aspect is possible, described first Service Processing Unit, specifically for:

Send to the described BNG or described SPE or another NFV server with new outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, described forward-path is: adopt Segment routing technology to set up from described NFV server to the described BNG or described SPE or another NFV server described with new outermost tag match described MPLS service label.

The invention has the beneficial effects as follows: the SPE distributing labels that control device is NFV server in advance or associates with described NFV server.When BNG receives message, the business chain processing described message is determined according to the message received, and then from described Policy Table, find out the strategy corresponding with the described message received, in described message, add MPLS service label, the message added after described MPLS service label is forwarded to NFV server or SPE; Access the NFV server for Business Processing successively according to described MPLS service label, complete the process to business chain.Thus directly the label of each NFV server for the treatment of business chain is added in heading once, forward directly to next NFV server after the complete business of NFV server process above, realize process continuously, simultaneously, need not all need to send BNG after the complete business of each NFV server process, and then, while improve the treatment effeciency of business chain, also greatly reduce taking network traffics.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

To be that network function that the embodiment of the present invention one provides is virtualized realize network of network Organization Chart to Fig. 1;

Fig. 2 is the structure composed figure of the control device that the embodiment of the present invention three provides;

Fig. 3 is the structure composed figure of a kind of wideband network gateway that the embodiment of the present invention five provides;

Fig. 4 is the structure composed figure of the network function virtualized server that the embodiment of the present invention seven provides;

Fig. 5 is the structure composed figure of the another kind of wideband network gateway that the embodiment of the present invention eight provides.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

In embodiments of the present invention, described control device is made up of software defined network SDN control device and NFV control device.Therefore, the network equipment being used for Business Processing, in conjunction with NFV technology and software defined network (SoftwareDefined Networking, SDN) technology, is divided into two parts, comprises: control plane and datum plane by the embodiment of the present invention.Wherein, described datum plane is made up of equipment.

Wherein, the control plane for the processing sequence of service control chain is realized, using this software as control device by software (business software as the server of data center runs); Particularly, what this control device was used for comprising datum plane controls for the switch that forwards and/or router, also for protocal analysis, analyze the control etc. of forwarding process that message needs business chain to be processed (being made up of the business processed successively), the foundation/amendment/deletion of Policy Table, the message of MPLS service label; In addition, docked by standard interface between control plane and datum plane, controlled by the repeating process of control plane to switch or router, to be sent to the NFV server for the treatment of business successively, effectively can to reduce costs and realize business arrangement fast.Because control device realizes at software view, can for the replacing of old service chain, can also inserting for new business chain, upgrade in time Policy Table.

In order to technical solutions according to the invention are described, be described below by specific embodiment.

embodiment one:

A kind of network function that the present embodiment provides is virtualized realizes network, and Fig. 1 shows that this network function is virtualized realizes network of network framework, for convenience of description, illustrate only the part relevant to the embodiment of the present invention.

A kind of network function is virtualized realizes network, and the virtualized network that realizes of described network function comprises:

Control device 31, for being network function virtual NFV server 33 distributing labels, and/or be Operator Specific Service edge device (the Service Provider Switching associated with described NFV server 33, SPE) distributing labels, also for generating the Policy Table that is made up of one or more different strategy and sending described Policy Table to wideband network gateway (Broadband Network Gateway, BNG) 32, described strategy is: determine to comprise multiprotocol label switching (the Multi Protocol Label Switching of one or more label according to the processing sequence of business in the business chain comprising one or more business, MPLS) service label,

Described BNG32, for receiving message, the business chain processing described message is determined according to the message received, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add described MPLS service label, the message that with the addition of described MPLS service label is sent to described NFV server 33 or described SPE;

There is the NFV server 33 of label, if for receiving the message comprising described MPLS service label, then Business Processing is carried out to the message comprising described MPLS service label, remove outermost label in described MPLS service label, to after sending Business Processing with another NFV server 33 of new outermost tag match in described MPLS service label or the SPE with label, the message that comprises the described MPLS service label removing outermost layer label;

There is SPE described in label, if for receiving the message comprising described MPLS service label, then the message repeating comprising described MPLS service label is carried out Business Processing with the NFV server 33 associated with described SPE to the message comprising described MPLS service label to the NFV server 33 associated with described SPE, the NFV server 33 that reception associates with described SPE sends, message after finishing service process, remove outermost label in described MPLS service label, send after Business Processing to NFV server 33 or another SPE with label with new outermost tag match in described MPLS service label, comprise the message of the described MPLS service label removing outermost layer label.

What deserves to be explained is, control device 31 is NFV server 33 distributing labels for the treatment of business in advance, thus, the NFV server 33 needing access can be found according to label, NFV server 33 directly carries out Business Processing to this message, and the message after finishing service process is forwarded to the NFV server of the next business of process (described business chain comprises described next business) by carrier network.In addition, it can also be the SPE distributing labels associated with described NFV server 33, thus can first find this SPE, the NFV server 33 by SPE, the message repeating comprising described MPLS service label received extremely associated again, NFV server 33 carries out Business Processing to this message, and the message after finishing service process is sent to SPE.

Preferably, NFV server 33 comprises NFV server 331 and NFV server 332; SPE comprises SPE341 and SPE342; Control device 31 is the SPE341 distributing labels associated with NFV server 331, and be not NFV server 331 distributing labels, like this, first SPE341 is found by MPLS service label, then SPE341 by comprise MPLS service label message repeating to NFV server 331 with finishing service process, the message after finishing service process is sent to SPE341 by NFV server 331; Or control device 31 is NFV server 332 distributing labels, and is not SPE342 distributing labels, like this, NFV server 332 directly receives the message comprising MPLS service label, and processes the corresponding business that business chain comprises.

Separately what deserves to be explained is, when BNG32 receives message, search in described Policy Table the strategy whether storing and mate with the business chain processed needed for the message that receives, if find the strategy mated with this business chain, then in described message, add MPLS service label; If do not find the strategy mated with this business chain, then this business chain is forwarded to control device 31 by BNG32, control device 31 is generated strategy for this business chain with update strategy table, and the Policy Table after upgrading is sent to BNG32 to upgrade the Policy Table in BNG32.The like, control device 31 can add the MPLS service label of coupling for the message received at every turn, to complete the process to the business chain that this message comprises.

Like this, directly NFV server 33 can be accessed successively with the process of finishing service chain according to MPLS service label (instead of according to IP address), such as: BNG32 access comprises the message of individual business (described individual business is business chain), according to the message comprising described MPLS service label is carried out to the strategy that Business Processing chain mates add MPLS service label in this message, and then, this people's business is processed into: according to MPLS service label according to MPLS service label, first this message is forwarded to authentication and charging (Authentication, Authorization and Accounting, AAA) server is to carry out user authentication, then the message after user authentication is forwarded to network address translation (Network AddressTranslation, NAT) gateway is to carry out public and private net address conversion, the message subsequently forwarded after the conversion of public and private net address detects (deep packet inspection to deep message, DPI) gateway is to carry out application controls, so far this people's business is completed, last according to object IP address search routing table with the message that will complete after individual business through SPE, PE sends (with routing forwarding to object equipment).Again such as: BNG32 access comprises the message of enterprise tenant business (described enterprise tenant business is business chain), according to the message comprising described MPLS service label is carried out to the strategy that business chain process mates add MPLS service label in this message; And then, this enterprise tenant business is processed into: according to MPLS service label according to MPLS service label, first this message is forwarded to fire compartment wall (Firewall, FW) server is to carry out safety inspection, then the message after safety inspection is forwarded to load balancing (Load Balance, LB) server carries out load balance process, so far complete this enterprise tenant business, finally according to object IP address search routing table so that the message after completing enterprise tenant business is sent (with routing forwarding to object equipment) through SPE, PE.

Another more excellent, in the present embodiment, control device 31, for different business chain, all pre-establishes Different Strategies and this Different Strategies is documented in composition Policy Table, this Policy Table is sent to described BNG32.

When BNG32 receives message, for the business chain needed for process message, from described Policy Table, find the strategy of this business chain of process, adopt this strategy generating MPLS service label, and this MPLS service label is added in described message.Thus be NFV server 33 distributing labels, or be the SPE that associates with described NFV server 33 distributing labels when, the MPLS service label in message described in heading can be searched, and then find according to the label that order in described MPLS service label is deposited the equipment (comprising: NFV server 33 or the SPE associated with NFV server 33) needing access successively.

If the equipment found is the described NFV server 33 of distributing labels, then described in, the described NFV server 33 of distributing labels carries out Business Processing to the message comprising described MPLS service label; If the equipment found is the described SPE distributed, then described SPE will comprise the message repeating of described MPLS service label to the described NFV server 33 associated with described SPE, receives the message comprising described MPLS service label sent after the described NFV server 33 associated with described SPE carries out Business Processing to the message comprising described MPLS service label.

After having accessed successively according to described MPLS service label and the NFV server 33 corresponding to Business Processing chain carried out to the message comprising described MPLS service label, namely, after processing all business comprised when time business chain successively, the message completed when after secondary business chain process is sent to object equipment (having object IP address).Like this, described BNG32 only needs search a Policy Table and in message, add MPLS service label, and then accesses NFV server 33 successively according to comprising MPLS service label, can complete the process when time business chain.Preferably, if MPLS service label only comprises the label of NFV server 332 or the label with the SPE341 associated containing NFV server 331, then after each NFV server completes corresponding Business Processing, still directly can forward this message to the NFV server 33 processing next business according to MPLS service label (do not need often process a business all send message return BNG32).

Finally, the message after the SPE associated with the NFV server 33 completing last business forwards the process of finishing service chain is to object equipment (being forwarded to object equipment according to object IP address).As a kind of embodiment, forward the message after finishing service chain to PE by SPE, forward this by PE according to object IP address and complete the message after this business chain to object equipment.

What deserves to be explained is, described MPLS service label is made up of the label of described SPE and/or the label of described NFV server 33.Particularly, after NFV server 33 completes a business, because NFV server 33 has label, then directly can remove the outermost label of described MPLS service label to find new outermost label (this new outermost label is: the label of described SPE or the label of NFV server 33), the message after the device forwards finishing service with new outermost label.In like manner, if NFV server 33 do not have control device 31 distribute label, then the described SPE(associated with this NFV server 33 has label) receive message after, described message repeating is processed business to this NFV server 33; After this NFV server 33 processes business, be sent completely the message after business to the described SPE associated with this NFV server 33; And then, described SPE removes the outermost label of described MPLS service label and finds new outermost label (this new outermost label is: the label of described SPE or the label of NFV server 33), the message after the device forwards finishing service with new outermost label.

Like this, after the process of each NFV server 33 finishing service, all do not need the message after sending Business Processing to BNG32, and can directly according to the NFV server 33 of the next business of MPLS service label access process.By that analogy, after the process of this business chain to be done, the message (not needing the message after being sent completely business chain process to BNG32) after the SPE by associating with the NFV server 33 completing last business has forwarded this business chain process is to object equipment.

As one embodiment of the present invention, the label in described MPLS service label also comprises: the label of the described BNG32 that described control device distributes; And then, if MPLS service label includes the label of BNG32, according to MPLS service label, the message repeating after completing certain Business Processing can be returned BNG32.

Preferably, the label of described BNG32 that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server 33 and interval is alternately arranged and forms.

Particularly, the label that described MPLS service label comprises, can be: the label of NFV server 33, or be: the label (according to NFV server, whether there is tag processes ability, determining as NFV server 33 distributing labels or the SPE distributing labels for associating with NFV server 33) of the SPE associated with NFV server 33; The label that described MPLS service label comprises can also be the label of described BNG32.Like this, if often process a business all to need to send it back described BNG32, other label (comprising the label of SPE and the label of NFV server) then the label of BNG32 and described MPLS service label comprised is spaced, and then after each NFV server 33 executes business, all need the message after sending Business Processing to BNG32.

Wherein, after NFV server 33 completes a business, if NFV server 33 has label, then directly can remove the outermost label of described MPLS service label and find new outermost label (when new outermost label is the label of described BNG32), forwarding the message after finishing service to described BNG32.

Wherein, if NFV server 33 does not have the label that control device 31 distributes, then, after the described SPE associated with this NFV server 33 receives message, described message repeating is processed business to this NFV server 33; After this NFV server 33 processes business, the message after business can be sent completely to the described SPE associated with this NFV server 33; And then described SPE removes the outermost label of described MPLS service label and finds new outermost label (this new outermost label is the label of described BNG32), forward the message after finishing service to described BNG32.

By that analogy, until all business all finishing service process on the NFV server 33 of correspondence that business chain comprises, BNG32 by the message repeating after the process of finishing service chain to object equipment.

As one embodiment of the invention, between SPE and NFV server 33, carried out the sending/receiving of the message comprising described MPLS service label by VLAN (VirtualLocal Area Network, VLAN) technology.And then, when SPE341 or SPE342 in carrier network receives message, connect by this VLAN and forward described message to NFV server 33.

Preferably, when being only SPE341 distributing labels, and when not being NFV server 331 distributing labels, between the described SPE341 and the described NFV server 331 associated with described SPE341 of distributing labels, carried out the sending/receiving of the message comprising described MPLS service label by vlan technology.

Particularly, be not NFV server 331 distributing labels at control device 31, and when being only the SPE341 distributing labels associated with this NFV server 331, when this SPE341 receives message, can connect by this message repeating to this NFV server 331, after this NFV server 331 finishing service by VLAN; Message after finishing service is sent it back this SPE341 by VLAN connection by this NFV server 331.Like this, for the message needing this NFV server 331 finishing service, although be not this NFV server 331 distributing labels, still can by sending the mode of this message to the SPE341 associated with this NFV server 331 in advance to allow this NFV server 331 finishing service.

Preferably, described MPLS service label is the multilayer labels of accessing successively from outside to inside, and every one deck is a label; Simultaneously, when described have the NFV of label or described BNG or described SPE receive described MPLS service label time, remove outermost label in described MPLS service label, after message is processed, to remove after described MPLS service label in outermost tag match equipment (for have label NFV, there is the BNG of label and there is the SPE of label) send the message of the described MPLS service label after comprising described removal.

Particularly, for by looking into the MPLS service label that Policy Table gets, this MPLS service label is encapsulated in the heading of described message; Wherein, the generating mode of described MPLS service label, be specially: the order (this order of accessing equipment is successively determined according to the priority processing sequence of the business in business chain) of accessing equipment as required successively, label that the equipment of accessing successively has is encapsulated to generate the label of multilayer by the mode from skin to nexine, wherein, every one deck is a label.

Like this, when described equipment receives MPLS service label, get rid of outermost label in (such as realizing removing with POP order) MPLS service label, after the complete business of specifying of device processes, check whether the MPLS service label after removing also comprises label, if exist, then by after finishing service, comprise described removal after the message of MPLS service label be sent to the equipment of outermost label in the MPLS service label after distributing described removal; If the MPLS service label after removing does not comprise label, then extract object IP address in heading with by the message repeating after this finishing service chain to object equipment.

Preferably, when being only SPE341 distributing labels, and when not being NFV server 331 distributing labels, if the SPE341 of distributing labels receives message, get rid of outermost label in MPLS service label, the message comprising the MPLS service label after removal is sent to the NFV server 331 associated with the SPE341 of this distributing labels by VLAN; After this NFV server 331 finishing service process, the message after finishing service process is sent it back the SPE341 of distributing labels by VLAN; Whether the MPLS service label after the SPE341 of distributing labels reexamines removal also comprises label, to determine that the message after by finishing service is sent to the next equipment of process or object equipment.

As one embodiment of the invention, the part or all of NFV server 33 in equipment is set up in cloud computation data center.Thus the virtualized network that realizes of the network function that the present embodiment provides comprises: carrier network and system for cloud computing; Wherein, system for cloud computing comprises one or more Internet data center (InternetData Center, IDC) network, whole NFV server 33 can be arranged in different IDC networks, meanwhile, each IDC network is interconnected with the forwarding realizing message (this message comprises the message of described MPLS service label) by carrier network.

As one embodiment of the invention, when forwarding comprises the message of described MPLS service label between the devices, be adopt Segment routing (Segment Routing, SR) technology to realize by carrier network.Wherein, described carrier network comprises following equipment: switch or the routers etc. such as Provider Equipment (Provider, P), BNG32, provider edge equipment (Provider Edge, PE), SPE; The forwarding of the interconnected of described carrier network and message is realized by the said equipment.

In the present embodiment, forward described MPLS service label between devices and realize at carrier network, carrier network is also divided into overall control plane and global data plane by SR technology; Wherein, the equipment that described global data plane comprises comprises the switches such as SPE, P, PE or router.

Described overall control plane be global data plane comprise distribute overall MPLS label for the equipment forwarding the message comprising described MPLS service label; Perhaps the overall MPLS label that the equipment that part has distributed overall MPLS label is assigned to is identical.

And then, the equipment that described overall control plane controls to have distributed overall MPLS label completes the message forwarding in the operator network comprising described MPLS service label, to realize the forwarding of the message comprising described MPLS service label between devices according to the forwarding strategy preset.

Preferably, the forwarding strategy preset is node segmentation (Node Segment, NS) forwarding strategy; (comprising: send the first equipment of the message comprising described MPLS service label and receive the second equipment comprising the message of described MPLS service label at neighbouring device, wherein, the label that described first equipment has and the label that described second equipment has are adjacent in described MPLS service label) between forward when comprising the message of described MPLS service label, it is identical that described overall control plane adopts described NS forwarding strategy to be the overall MPLS label that equipment that between this neighbouring device, described global data plane comprises distributes.For described NS forwarding strategy, the equipment with identical described overall MPLS label, when forwarding comprises the message of described MPLS service label, can adopt the mode of searching routing table to realize.Particularly, adjacent with described first equipment, there is the equipment of identical described overall MPLS label when receiving described MPLS service label, described overall MPLS label can be added at the outermost layer of described MPLS service label, then the other equipment with identical described overall MPLS label only carries out the forwarding to the message added after described overall MPLS label, until be forwarded to adjacent with described second equipment, there is the equipment of identical described overall MPLS label, adjacent with described second equipment, the equipment with identical described overall MPLS label removes outermost overall MPLS label in described MPLS service label, to comprise after removal, the message only comprising described MPLS service label is sent to described second equipment.

Preferably, the forwarding strategy preset is contiguous segment (Adjacency Segment, AS) forwarding strategy; For described AS forwarding strategy, described overall control plane is the overall MPLS label of the equipment distribution that the described global data plane between this neighbouring device comprises is that part is identical.Particularly, when the first equipment sends the message comprising described MPLS service label to when having the equipment of overall MPLS label, according to described AS forwarding strategy, this equipment with overall label can add overall MPLS label (equipment in the operator that accesses successively) at the outermost layer of MPLS service label; Wherein, when forwarding has the message of identical described overall MPLS label, NS forwarding strategy is adopted to realize; When the neighbouring device in operator does not have identical overall MPLS label, remove outermost overall MPLS label, forward this message to the neighbouring device with new outermost overall MPLS label.Finally, the message comprising described MPLS service label can be sent to the second equipment by the equipment with described overall MPLS label adjacent with described second equipment, completes the forwarding of the message comprising described MPLS service label between the first device and the second device.

And then preferably, for described, there are the NFV of label, described BNG or described SPE tri-kinds of equipment, when needs send message, determine that the mode of forward-path is as follows:

Wherein, for described BNG, when needs send message, send to the NFV server or SPE with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, described forward-path is: adopt Segment routing technology to set up from described BNG to the path of the equipment (being: described NFV server or described SPE) with outermost tag match described MPLS service label;

Wherein, for the described NFV server with label, when needs send message, send to the described BNG or described SPE or described NFV server with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, described forward-path is: adopt Segment routing technology to set up from described NFV server to described MPLS service label the path of equipment (being: described BNG, described SPE or described NFV server) of outermost tag match;

Wherein, for the described SPE with label, when needs send message, send to the described BNG or described SPE or described NFV server with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, described forward-path is: adopt Segment routing technology to set up from described SPE server to described MPLS service label the path of equipment (be: described BNG, described SPE and described NFV server one of them) of outermost tag match.

As one embodiment of the invention, control device is the equipment also distributing labels in carrier network, and the equipment in this carrier network comprises: one or more switch, and/or one or more router.

Particularly, the SPE distributing labels that control device 31 is not only NFV server 33 and/or associates with described NFV server, and be BNG32 distributing labels, also for for forward the message that comprises described MPLS service label, equipment (comprising P and PE) distributing labels in carrier network; Thus, distributing labels, also adopt described MPLS service label to control the forwarding of message between equipment in carrier network.Like this, for the treatment of/to forward/equipment of sending/receiving message all has label, thus only need can access one or more NFV servers for the treatment of business chain successively, to realize the process to whole business chain according to MPLS service label.

embodiment two:

It should be noted that, the virtualized implementation method of the network function that the present embodiment provides is applicable to that network function that embodiment one provides is virtualized realizes network.Wherein, the virtualized implementation method of network function that the present embodiment provides describes from the angle of described control device.

The virtualized implementation method of a kind of network function, the virtualized implementation method of described network function comprises:

Described control device is network function virtual NFV server-assignment label, and/or is the Operator Specific Service edge device SPE distributing labels associated with described NFV server;

Described control device generates the Policy Table be made up of one or more different strategy, and described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business;

Described control device sends described Policy Table to described BNG;

Like this, when described BNG receives message, described BNG finds out the strategy corresponding with the described message received to add MPLS service label in described message from described Policy Table, and described BNG forwards adding the message after MPLS service label described in interpolation to described NFV server or described SPE; And then, if the described NFV server of distributing labels receives the message comprising described MPLS service label, then by the described NFV server of described distributing labels, Business Processing is carried out to the message comprising described MPLS service label; If described SPE receives the message comprising described MPLS service label, then by described SPE, the message repeating comprising described MPLS service label is also received the message comprising described MPLS service label sent after the described NFV server associated with described SPE carries out Business Processing to the message comprising described MPLS service label to the described NFV server associated with described SPE.

As one embodiment of the invention, described control device can also be the equipment distributing labels in carrier network, and the equipment in described carrier network comprises: one or more switch, and/or one or more router.

Like this, MPLS service label only can be used to complete whole business chain is processed, comprise: the message repeating between the NFV server for Business Processing.

As one embodiment of the invention, the label in described MPLS service label also comprises: the label of the wideband network gateway BNG that described control device distributes; The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

embodiment three:

It should be noted that, the virtualized implementation method of network function that the control device that the present embodiment provides and embodiment two provide is suitable for mutually.

Fig. 2 shows the composition structure of the control device that the present embodiment provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.

A kind of control device, described control device comprises:

Label distribution unit 311, for being at least one distributing labels in network function virtual NFV server and the Operator Specific Service edge device SPE that associates with described NFV server;

Policy Table's generation unit 312, for generating the Policy Table be made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business;

Policy Table's transmitting element 313, for sending described Policy Table to wideband network gateway BNG.

Particularly, the label distribution unit 311 SPE distributing labels that is NFV server in advance and/or associates with NFV server; Then, show generation unit 312 to generate strategy respectively for different business chain to form the Policy Table comprising multiple strategy; This Policy Table is sent to BNG by Policy Table's transmitting element 313, with BNG according to the strategy that can find out coupling during the message received from Policy Table; If BNG fails to find out in Policy Table the strategy of coupling according to the message received, then by this message repeating to control device; And then control device is made strategy according to the business chain processed needed for the message that receives and adds in Policy Table by the strategy made, and resends to BNG by this Policy Table; And then, by BNG, the MPLS service label with this strategy matching made is added in message with the process of finishing service chain.

Like this, BNG receives message, and needed for the message that process receives, business chain finds out the strategy of coupling from Policy Table, in the message received described in being added to by the MPLS service label of the strategy correspondence found out; And then, by forwarding this message between devices to access the NFV server for Business Processing successively, complete the process to the business chain that this message comprises.And then the message after the process of finishing service chain is sent to object equipment (this object equipment has object IP address) by the NFV server of last business in finishing service chain.

What deserves to be explained is, described MPLS service label is only made up of the label of described SPE and/or the label of described NFV server.

Particularly, for the message that BNG receives, if all do not need to return BNG after the process of each access NFV server finishing service, then the MPLS service label that BNG adds in the message received comprises: the label of the described SPE accessed successively obtained according to the processing sequence of business chain or the label of described NFV server.

As one embodiment of the invention, described control device can also be the equipment distributing labels in carrier network, and the equipment in described carrier network comprises: one or more switch, and/or one or more router.Wherein, the described switch in carrier network and described router, all for forwarding the message comprising described MPLS service label.

Particularly, control device is forward the equipment also distributing labels comprised in the carrier network of the message of described MPLS service label, therefore, when BNG receives message, the MPLS service label added in message according to strategy also comprises the label for the equipment in carrier network distributes; Thus the equipment (comprising the equipment in carrier network) that the message that can control to comprise MPLS service label by MPLS service label is accessed each time, controls the handling process of whole business chain by MPLS service label.

As one embodiment of the invention, when described control device be described BNG be also assigned with label time, if control device is in the Business Processing order of certain business chain, with the addition of access BNG step, then when carrying out business chain process, if outermost layer label is the label of described BNG in MPLS service label, will the message repeating of MPLS service label be comprised to BNG, forwarded the message extremely next NFV server comprising MPLS service label again by BNG, continue process business chain.

Preferably, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes; The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

Particularly, for the message that BNG receives, if all need to return BNG after the process of each access NFV server finishing service, in the MPLS service label then comprised at message, other label (comprising: the label of described SPE and the label of described NFV server) is spaced with the label of described BNG; Wherein, need the label of the label of the described SPE accessed successively or described NFV server, determine according to business chain.

embodiment four:

It should be noted that, the virtualized implementation method of the network function that the present embodiment provides is applicable to that network function that embodiment one provides is virtualized realizes network.Wherein, the virtualized implementation method of network function that the present embodiment provides describes from the angle of described BNG.

Wideband network gateway BNG receives message;

Described BNG determines according to the message received the business chain processing described message, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add multiprotocol label switching MPLS service label, wherein, described Policy Table generates and sends to described BNG by control device, described Policy Table is made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business, wherein, the label that described MPLS service label comprises is: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes,

Particularly, the Policy Table of BNG receiving control device transmission in advance.When receiving the message from individual tenant or enterprise tenant at every turn, from Policy Table, the strategy that comprise with the message received business chain mates is found out according to the message received, in the message received, add the MPLS service label with the strategy matching found out, the message added after described MPLS service label is forwarded to NFV server or SPE.

And then, if the described NFV server of distributing labels receives the message comprising described MPLS service label, then by the described NFV server of described distributing labels, Business Processing is carried out to the message comprising described MPLS service label; If described SPE receives the message comprising described MPLS service label, then by described SPE, the message repeating comprising described MPLS service label is also received the message comprising described MPLS service label sent after the described NFV server associated with described SPE carries out Business Processing to the message comprising described MPLS service label to the described NFV server associated with described SPE.Thus, treat all to access complete with the equipment of the tag match in MPLS service label, that is, after processing the business chain that described message comprises, search object IP address to be sent completely the message after business chain process to object equipment.

Preferably, described MPLS service label is only made up of the label of described SPE or the label of described NFV server.Like this, all do not need to return BNG after asking the process of NFV server finishing service at every turn, comprise the processing time greatly saving business chain.All can send BNG relative to after each Business Processing, save subnetwork flow.

As one embodiment of the invention, control device can also be BNG distributing labels.Thus, when needing the message after by Business Processing to send it back BNG, then in described MPLS service label, add the label of BNG.

Preferably, when all needing to return BNG after the process of each access NFV server finishing service, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes; The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

Particularly, when the message that BNG receives, if all need to return BNG after the process of each access NFV server finishing service, in the MPLS service label then comprised at message, other label (comprising: the label of described SPE and the label of described NFV server) is spaced with the label of described BNG; Wherein, the label of the described SPE accessed successively or the label of described NFV server, determine according to business chain.

As one embodiment of the invention, described BNG sends to described NFV server or described SPE the mode comprising the message of described MPLS service label, is specially:

Particularly, the described BNG that the label comprised when described MPLS service label is corresponding completes when after time process, if MPLS service label also includes label, then need to be sent to when the message after time process and the equipment of outermost tag match in described MPLS service label (being: described NFV server or described SPE).Particularly, described BNG is E-Packeted to described NFV server or described SPE by carrier network, and wherein, message repeating in the operator network adopts Segment routing technology to realize.

As one embodiment of the invention, control device is forward the equipment comprised in the carrier network of the message of described MPLS service label to be also assigned with label; After MPLS service label is added into message by BNG, the label comprised according to MPLS service label sends the message comprising MPLS service label, to be forwarded to the NFV server for next Business Processing to the equipment (comprising equipment in carrier network, that have label) of distributing labels; By that analogy, according to the levels order of label, successively access operation raw in equipment and the equipment such as NFV server, allow the corresponding business of NFV server process, complete the process to business chain.

As one embodiment of the invention, described MPLS service label is the multilayer labels of accessing successively from outside to inside, and every one deck is a label;

Meanwhile, described BNG also for:

When receiving the message comprising described MPLS service label, remove outermost label in described MPLS service label, to remove after described MPLS service label in the equipment of outermost tag match send the message of the described MPLS service label after comprising described removal.

Particularly, when BNG receives the message comprising described MPLS service label, BNG removes outermost label in described MPLS service label, BNG to the message comprising described MPLS service label carry out respective handling (according to process business chain needs and specify), then BNG by complete the message after respective handling to remove after described MPLS service label in outermost tag match equipment (comprising: have the NFV server of label and there is the SPE of label) send.

embodiment five:

It should be noted that, the virtualized implementation method of network function that the wideband network gateway that the present embodiment provides and embodiment four provide is suitable for mutually.

Fig. 3 shows the composition structure of a kind of wideband network gateway that the present embodiment provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.

A kind of wideband network gateway, described wideband network gateway comprises:

Message receiving element 321, for receiving message;

Message process unit 322, for determining to process the business chain of described message according to the message received, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add multiprotocol label switching MPLS service label, wherein, described Policy Table generates and sends to wideband network gateway BNG by control device, described Policy Table is made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business, wherein, label in described MPLS service label comprises: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes.

Packet sending unit 323, for sending the message that with the addition of described MPLS service label to described NFV server or described SPE.

As one embodiment of the invention, described packet sending unit, specifically for:

As one embodiment of the invention, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes; The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

Meanwhile, described wideband network gateway also comprises:

First label removal unit, for when receiving the message comprising described MPLS service label, remove outermost label in described MPLS service label, after process to be done, to remove after described MPLS service label in outermost tag match equipment (comprise there is label NFV server, there is the SPE of label or there is the BNG of label) be sent completely message after process, that comprise the described MPLS service label after described removal.

embodiment six:

It should be noted that, the virtualized implementation method of the network function that the present embodiment provides is applicable to that network function that embodiment one provides is virtualized realizes network.Wherein, the virtualized implementation method of network function that the present embodiment provides describes from the angle of described NFV server.

When wideband network gateway BNG finds out the strategy mated with the business chain processed needed for the message that receives from described Policy Table, multiprotocol label switching MPLS service label is added in described message, to the message after described MPLS service label be added to after NFV server or Operator Specific Service edge device SPE forward

If the described NFV server of distributing labels receives the message comprising MPLS service label, then Business Processing is carried out to the message comprising described MPLS service label, remove outermost label in described MPLS service label, send after Business Processing to NFV server or SPE with new outermost tag match in described MPLS service label, comprise the message of the described MPLS service label removing outermost layer label, described MPLS service label comprises one or more label, the label that described MPLS service label comprises is: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes,

If receive the message comprising described MPLS service label that described SPE forwards, then Business Processing is carried out to the message comprising described MPLS service label, be sent completely the message after Business Processing to described SPE.

In addition, after NFV server is to the message finishing service process comprising described MPLS service label, the NFV with label except outermost label in described MPLS service label, or can remove outermost label in described MPLS service label by the described SPE with label; Then, also include label if complete in the MPLS service label after the removal of outermost layer label, then forwarded when the message after time Business Processing by carrier network.

As one embodiment of the invention, the label in described MPLS service label also comprises: the label of the wideband network gateway BNG that described control device distributes;

As one embodiment of the invention, the NFV server with label sends to the described BNG or described SPE or described NFV server with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, and described forward-path is: adopt Segment routing technology to set up from described NFV server to the described BNG of outermost tag match described MPLS service label or the path of described SPE or described NFV server.

Wherein, when after the process of NFV server finishing service, if this NFV server has the label that control appliance distributes, then directly message after Business Processing is sent to that associate with this NFV server, in carrier network SPE, and then adopts Segment routing technology to be forwarded the message after finishing service process by carrier network to the equipment with outermost tag match in described MPLS service label.

In addition, when after the process of NFV server finishing service, if this NFV server does not have the label that control appliance distributes, then the message after Business Processing is sent to associate with this NFV server, distributing labels, SPE in carrier network, thus adopt Segment routing technology in the operator network by the message repeating after finishing service process to the equipment with outermost tag match in described MPLS service label.

As one embodiment of the invention, described NFV server carries out the sending/receiving of the message comprising described MPLS service label with the SPE associated with described NFV server by virtual local area network technology.

Meanwhile, the described NFV server of described distributing labels, also for:

When receiving the message comprising described MPLS service label, remove outermost label in described MPLS service label, after Business Processing to be done, to remove after described MPLS service label in outermost tag match equipment (comprise there is label NFV server, there is the SPE of label and there is the BNG of label) send and comprise message after Business Processing, that comprise described MPLS service label.

embodiment seven:

It should be noted that, the virtualized implementation method of network function that the network function virtualized server that the present embodiment provides and embodiment four provide is suitable for mutually.

Fig. 4 shows the composition structure of the network function virtualized server that the present embodiment provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.

A kind of network function virtualized server, described network function virtualized server comprises:

First Service Processing Unit 333, if for receiving the message comprising multiprotocol label switching MPLS service label, then Business Processing is carried out to the message comprising described MPLS service label, remove outermost label in described MPLS service label, send after Business Processing to NFV server or Operator Specific Service edge device SPE with new outermost tag match in described MPLS service label, comprise the message of the described MPLS service label removing outermost layer label, described MPLS service label comprises one or more label, the label that described MPLS service label comprises is: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes, or,

Second Service Processing Unit 334, if for receiving the message comprising described MPLS service label that described SPE forwards, then carry out Business Processing to the message comprising described MPLS service label, is sent completely the message after Business Processing to described SPE.

Particularly, in order to use the process of MPLS service label finishing service chain, control appliance is NFV server-assignment label in advance, and/or is the SPE distributing labels associated with described NFV server.

And then, receive message when described BNG comprises, comprise and find out the strategy corresponding with the described message received from described Policy Table, in described message, add the MPLS service label with the strategy matching found.Thus according to described MPLS service label, forward the message that comprises described MPLS service label successively to NFV server or the SPE that associates with described NFV server.Wherein, the forwarding between the neighbouring device (comprising: NFV server and the SPE associated with described NFV server) that the adjacent label in described MPLS service label is corresponding, is realized by carrier network.

And then, when the described NFV server of distributing labels receives the message comprising described MPLS service label, during the described NFV server of distributing labels judges in the message received described MPLS service label, whether outermost label is identical with the label that this described NFV server has, if identical, then Business Processing is carried out to the message comprising described MPLS service label.Message after finishing service process is sent to the SPE associated with the described NFV server of distributing labels in carrier network, to be forwarded to the equipment with outermost tag match in described MPLS service label by this SPE.After Business Processing to be done, the described NFV server with label removes outermost label in described MPLS service label, after sending Business Processing to the NFV server or SPE with new outermost tag match in described MPLS service label, to comprise the described MPLS service label removing outermost layer label message.

Or, when the SPE by distributing labels receives the message comprising described MPLS service label, the SPE of described distributing labels judges that in the described MPLS service label in the message received, whether outermost label is identical with the label that this described SPE has, if identical, then forwarding comprises the message of described MPLS service label to the NFV server associated with the SPE of described distributing labels; This NFV server carries out Business Processing to the message comprising described MPLS service label, is sent completely the SPE of the message comprising described MPLS service label after carrying out Business Processing to the message comprising described MPLS service label to described distributing labels.The described SPE with label removes outermost label in described MPLS service label, after sending Business Processing to the NFV server or SPE with new outermost tag match in described MPLS service label, to comprise the described MPLS service label removing outermost layer label message.

By that analogy, all business that business chain comprises all can be assigned to corresponding NFV server to carry out corresponding Business Processing according to described MPLS service label.

And then, after the process of the business chain that described message to be done comprises, search object IP address, the message after the process of finishing service chain is mail to object equipment (there is object IP address).

Preferably, if described MPLS service label is only made up of the label of described SPE or the label of described NFV server, each NFV server for business chain process does not all need to send described BNG after finishing service process, saves network traffics.

As another embodiment of the present invention, the label in described MPLS service label also comprises: the label of the wideband network gateway BNG that described control device distributes; The label of the described BNG that described MPLS service label is inserted by least one label in the label of described SPE and the label of described NFV server and interval is alternately arranged and forms.

Particularly, if each NFV server for business chain process all needs to send BNG after finishing service process, the MPLS service label that then BNG adds in the message received comprises for: other label (comprising: the label of described SPE or the label of described NFV server) and the label of described BNG are alternately arranged the MPLS service label formed, wherein, the label of the described SPE accessed successively or the label of described NFV server is determined according to the processing sequence of business chain; In addition, the object of adding the label of described BNG be in order to: often execute a Business Processing, all send the message after Business Processing to BNG, know the progress of business chain process to allow BNG or add new label the need of in MPLS service label.

As one embodiment of the invention, described first Service Processing Unit, specifically for:

As one embodiment of the invention, control device is forward the equipment also distributing labels comprised in the carrier network of the message of described MPLS service label.Like this, after NFV server is to the message finishing service process comprising MPLS service label, the message after finishing service process is sent to the SPE(associated with this NFV server and is also by this NFV server: distributing labels, SPE in carrier network); Then, according to MPLS service label, after there is in carrier network the device forwards of label, the message repeating of MPLS service label will be comprised to the SPE associated with next NFV server.

As one embodiment of the invention, state network function virtualized server and also comprise:

3rd message repeating unit, for carrying out the sending/receiving of the message comprising described MPLS service label with the SPE associated with described NFV server by virtual local area network technology.

Particularly, NFV server associates with the SPE in carrier network; No matter control appliance is NFV server or is the SPE distributing labels in the carrier network that associates with NFV server.After the SPE in the carrier network associated with NFV server receives message, the message comprising MPLS service label received is forwarded to NFV server by virtual local area network technology; After the process of NFV server finishing service, the message after Business Processing is sent it back the SPE in the carrier network associated with this NFV server by virtual local area network technology.That is, between NFV server and the SPE associated with NFV server, the mutual of the message comprising MPLS service label is carried out by virtual local area network technology.

Meanwhile, described network function virtualized server also comprises:

Second label removal unit, for when receiving the message comprising described MPLS service label, remove outermost label in described MPLS service label, to remove after described MPLS service label in outermost tag match equipment (comprise there is label NFV, there is the SPE of label and there is the BNG of label) send the message of the described MPLS service label after comprising described removal.

Particularly, when the described NFV server of distributing labels receives the message comprising described MPLS service label, the described NFV server of distributing labels removes outermost label in described MPLS service label, Business Processing is carried out to the message comprising described MPLS service label, then distributing labels described NFV server by the message after finishing service process to remove after described MPLS service label in the equipment of outermost tag match send.

When control device is not NFV server-assignment label, but when being the SPE distributing labels associated with described NFV server, the SPE associated with NFV server receives the message comprising described MPLS service label, remove outermost label in described MPLS service label, the message comprising the described MPLS service label after removal is sent to NFV server and carries out Business Processing with NFV server; The message comprising the described MPLS service label after removal after finishing service process is sent it back the SPE associated with described NFV server by NFV server; Then, the message after finishing service process is forwarded to the equipment of outermost tag match in the described MPLS service label after removal by the SPE associated with described NFV server by carrier network.

embodiment eight:

Fig. 5 shows the composition structure of the another kind of wideband network gateway that the present embodiment provides, and for convenience of description, illustrate only the part relevant to the embodiment of the present invention.

The wideband network gateway that the present embodiment provides, comprising: processor 325, memory 326 and network interface 327.Wherein,

Processor 325, for executive program.

In the present embodiment, program can comprise program code, and described program code comprises computer-managed instruction.

Processor 325 may be central processor CPU, or is configured to the one or more integrated circuits implementing the embodiment of the present invention.

Memory 326, for storage program.

Memory 326 may comprise random access memory, and (English: Random-access memory, abbreviation: RAM), still may comprise nonvolatile memory (English: Non-volatile memory, abbreviation: NVRAM).

Network interface 327, for receiving message, and/or receives the message comprising described MPLS service label, and/or sends the message comprising described MPLS service label.

In the present embodiment, network interface is network interface card.

When controller runs, described processor 325 makes described controller perform following method for the program stored in execute store 326:

Processor 325 receives message, the business chain processing described message is determined according to the message received, the strategy mated with the business chain determined is found out from Policy Table, and in described message, add multiprotocol label switching MPLS service label, wherein, described Policy Table generates and sends to described BNG by control device, described Policy Table is made up of one or more different strategy, described strategy is: determine to comprise the described MPLS service label of one or more label according to the processing sequence of business in the business chain comprising one or more business, wherein, label in described MPLS service label comprises: at least one label in the label of the virtual NFV server of network function and the label of Operator Specific Service edge device SPE, wherein, described NFV server associates with described SPE, the label of described NFV server and the label of described SPE are all that described control device distributes, the message that with the addition of described MPLS service label is sent to described NFV server or described SPE.

After BNG completes respective handling, need the message comprising described MPLS service label to be sent to the equipment with outermost tag match in described MPLS service label; Thus when controller runs, described processor 325 makes described controller can also perform following method for the program stored in execute store 326:

Processor 325 sends to the described NFV server or described SPE with outermost tag match in described MPLS service label the message comprising described MPLS service label according to forward-path, and described forward-path is: adopt Segment routing technology to set up from described BNG to the described NFV server of outermost tag match described MPLS service label or the path of described SPE.

Particularly, described MPLS service label is the multilayer labels of accessing successively from outside to inside, and every one deck is a label; When controller runs, described processor 325 makes described controller can also perform following method for the program stored in execute store 326:

When receiving the message comprising described MPLS service label, outermost label in described MPLS service label removed by processor 325, to remove after described MPLS service label in the equipment of outermost tag match send the message of the described MPLS service label after comprising described removal.

In embodiments of the present invention, the control device SPE distributing labels that is NFV server and/or associates with described NFV server; Thus after BNG receives message, search strategy table also adds MPLS service label according to the strategy of coupling in this message; Thus, access NFV server for the treatment of business successively with the process of finishing service chain by MPLS service label, after all business to be done (representing that business chain is processed complete), search object IP address in message to be finally forwarded to object equipment.

It will be appreciated by those skilled in the art that the unit comprised for above-described embodiment three, five, seven is carry out dividing according to function logic, but be not limited to above-mentioned division, as long as corresponding function can be realized; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.

Those of ordinary skill in the art it is also understood that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.

Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.

Claims

1. the virtualized implementation method of network function, is characterized in that, the virtualized implementation method of described network function comprises:

Wideband network gateway BNG receives message;

2. the virtualized implementation method of network function as claimed in claim 1, it is characterized in that, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

3. the virtualized implementation method of network function as claimed in claim 1 or 2, it is characterized in that, the message that with the addition of described MPLS service label sends to described NFV server or described SPE by described BNG, is specially:

4. a wideband network gateway, is characterized in that, described wideband network gateway comprises:

Message receiving element, for receiving message;

5. wideband network gateway as claimed in claim 4, it is characterized in that, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

6. the wideband network gateway as described in claim 4 or 5, is characterized in that, described packet sending unit, specifically for:

7. a control device, is characterized in that, described control device comprises:

8. control device as claimed in claim 7, it is characterized in that, the label in described MPLS service label also comprises: the label of the described BNG that described control device distributes;

9. the virtual NFV server of network function, is characterized in that, described NFV server comprises:

First Service Processing Unit, if for receiving the message comprising multiprotocol label switching MPLS service label, then Business Processing is carried out to the message comprising described MPLS service label, remove outermost label in described MPLS service label, the message comprising the described MPLS service label removing outermost layer label is sent to NFV server or Operator Specific Service edge device SPE with new outermost tag match in described MPLS service label, described MPLS service label comprises one or more label, described label is: at least one label in the label of NFV server and the label of described SPE that associates with NFV server, wherein, the label of described NFV server and the label of described SPE are all that control device distributes, or,

Second Service Processing Unit, if for receiving the message comprising MPLS service label that the described SPE that associates with described NFV server forwards, then Business Processing is carried out to the message comprising described MPLS service label, be sent completely the message after Business Processing to described SPE.

10. described NFV server as claimed in claim 9, is characterized in that, the label in described MPLS service label also comprises: the label of the wideband network gateway BNG that described control device distributes;

11. network function virtualized servers as claimed in claim 10, is characterized in that, described first Service Processing Unit, specifically for: