CN101252492B - Method and apparatus for accessing multi-protocol label switch virtual special-purpose network - Google Patents
Method and apparatus for accessing multi-protocol label switch virtual special-purpose network Download PDFInfo
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Abstract
The invention discloses a method for accessing multi-protocol label switching virtual private network, which comprises the following procedures: the data stream of the virtual leased line is received and forwarded through a virtual Ethernet interface on the loopback board, each virtual leased line is provided with at least two different virtual Ethernet interfaces, and the different virtual Ethernet interfaces is respectively arranged on the different loopback board; when certain loopback board is detected that the malfunction is generated, and the data stream bore by the failed loopback board is switched to another loopback board. Accordingly, the invention also discloses a service provider edge equipment, at least two different virtual Ethernet interfaces are arranged for each virtual leased line through carrying out the embodiment of the invention, the different virtual Ethernet interfaces is respectively arranged on the different loopback board, and after certain loopback board fails, the purpose that the service can be quickly switched to another loopback board can be realized, to avoid the service interruption of the virtual leased line user for a long time, enhance the reliability of the network and improve the satisfaction of the user.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and a kind of Provider Edge equipment of accessing multi-protocol label switch virtual special-purpose network.
Background technology
Along with Internet Protocol (Internet Protocol, IP) metropolitan area network progressively develops into the main flow scheme that metropolitan area network is built, has MPLS VPN (the Multi-Protocol Label Switching Virtual Private Network that solves enterprise's interconnection capability and the abundant business ability is provided, MPLS VPN) technology is becoming the important means that IP network is runed value-added service.
The MPLS VPN technologies can be decomposed into IP network in logic the network of isolating, and the application of the network of this logic isolation can be ever-changing: enterprise interconnects separately, working department of government interconnects, provides new business separately (as opening up VPN for IP telephone service, solve the IP network address deficiency, guaranteeing service quality etc.) etc.From network layer, MPLS VPN is divided into two layers of MPLS, and (Layer 2, and L2) three layers (Layer 3, and L3) VPN is two kinds for VPN and MPLS.
The network configuration of MPLS L3VPN, mainly by Provider Edge equipment (Provider Edge Device, PE), service provider equipment (Provide Device, P) and customer edge (Customer Edge Device, CE) 3 kinds of equipment are formed.Wherein, CE provides services on the Internet for the user by the data link that is connected to PE, and CE and PE set up syntople, gives PE with the VPN routing broadcast of this locality, and from PE study far-end VPN route; PE safeguards the VPN route that is attached thereto user site (Site), for each VPN sets up a virtual routing forwarding (Virtual Route Forwarding Table, VRF), after learning local routing iinformation there from CE, PE uses Internal BGP (Internal Border Gateway Protocol, IBGP) with other pe router switched vpc N routing iinformation, when vpn service passes through backbone network, inlet/outlet PE is equivalent to inlet/outlet LSR (Label Switching Router respectively, LSR), need carry out encapsulation/decapsulation for the IP bag; P does not directly connect the router of CE, only is responsible for the exchange of MPLS label, does not need to safeguard the VPN routing iinformation.In MPLS L2VPN, the Internet Service Provider is responsible for providing to the user two layers connectedness, and the route that need not participate in VPN user is calculated.
A lot of individual line subscribers all are to be linked into MPLS L2VPN network earlier in metropolitan area network at present, and then insert MPLS L3VPN network.See also Fig. 1, Fig. 1 shows first structural representation of existing accessing multi-protocol label switch virtual special-purpose network, CE1 user and CE2 user are linked into MPLS L2VPN network earlier, by network-side service provider edge device (Network-end Provider Edge, NPE) and the sub-interface between the PE insert MPLS L3VPN network, need three PE equipment like this, user side Provider Edge equipment (User-end Provider Edge, UPE) be used to insert the user, NPE is used to connect MPLS L2VPN and MPLS L3VPN network, and another PE is used to insert MPLS L3VPN network.In order to reduce equipment cost, normally adopt loopback plate (carrying out MPLS L2VPN and MPLS L3VPN interconnection in inside) that NPE and PE equipment are combined into an equipment, see also Fig. 2, Fig. 2 shows second structural representation of existing accessing multi-protocol label switch virtual special-purpose network, on the loopback plate, pass through to create two virtual ethernet (Virtual Ethernet, VE) interface inserts MPLS L2VPN and MPLS L3VPN respectively, can insert several thousand individual line subscribers on every block of loopback plate.
The user who is respectively different at MPLS L2VPN network on PE creates ve interface, corresponding virtual leased line (the Virtual Leased Line of each ve interface, VLL) user's data stream enters MPLS L3VPN network after arriving PE by VLL, return flow arrives user's CE by VLL, because a large amount of individual line subscribers insert MPLS L3VPN network by the loopback plate after converging to a PE by different UPE, therefore the loopback plate seems extremely important, VLL is a kind of technology of point-to-point, on PE, can only there be a ve interface to insert at every VLL, after breaking down, the loopback plate at ve interface place needs the manual loopback plate of changing like this, to cause hundreds and thousands of service for leased-line customers that insert by this piece loopback plate long-time the interruption to occur like this, poor reliability causes serious loss to the user.
Summary of the invention
The embodiment of the invention is to provide a kind of method and a kind of Provider Edge equipment of accessing multi-protocol label switch virtual special-purpose network, realized after certain piece loopback plate breaks down business being switched to another piece loopback plate fast, avoided the Virtual Leased Lines customer service to interrupt for a long time, improve the reliability of network, improve user satisfaction.
In order to reach above-mentioned technique effect, the method for a kind of accessing multi-protocol label switch virtual special-purpose network that the embodiment of the invention proposes may further comprise the steps:
Receive and transmit the data flow of Virtual Leased Lines by the Virtual Ethernet on the loopback plate of Provider Edge equipment, described loopback plate is used to connect multiprotocol label switching double-layer virtual private network and multi-protocol label switching three-layer Virtual Private Network, described every Virtual Leased Lines have at least two different Virtual Ethernets, and described different Virtual Ethernet is respectively on different loopback plates;
When detecting certain piece loopback plate and break down, the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate, be linked into the multi-protocol label switching three-layer Virtual Private Network from multiprotocol label switching double-layer virtual private network to finish the user.
Correspondingly, the embodiment of the invention also discloses a kind of Provider Edge equipment, comprise the loopback plate, also comprise:
Module is set, is used at least two different Virtual Ethernets of every Virtual Leased Lines setting, described different Virtual Ethernet is respectively on different loopback plates;
Receiver module is used for the data flow by the reception of the Virtual Ethernet on loopback plate Virtual Leased Lines;
Detection module, whether the loopback plate that is used to detect the data flow of each bar Virtual Leased Lines of current carrying breaks down;
The testing result processing module, be used for when described detection module testing result when being, the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate;
Forwarding module is used to transmit the data flow that described receiver module receives.
Implement the embodiment of the invention, by being at least two different Virtual Ethernets of every Virtual Leased Lines setting, and this different Virtual Ethernet is respectively on different loopback plates, when certain piece loopback plate breaks down, flow just switches on the other loopback plate, make user's business long-time interruption can not occur, solved and after certain piece loopback plate breaks down, needed the manual loopback plate of changing in the prior art, thereby cause hundreds and thousands of service for leased-line customers that insert by this piece loopback plate long-time problem of interrupting to occur, improve the reliability of network, improve user satisfaction.
Description of drawings
Fig. 1 is first structural representation of existing accessing multi-protocol label switch virtual special-purpose network;
Fig. 2 is second structural representation of existing accessing multi-protocol label switch virtual special-purpose network;
Fig. 3 is the structural representation of the Provider Edge equipment of the embodiment of the invention;
Fig. 4 is the structural representation of first embodiment that module is set in the Provider Edge equipment of the present invention;
Fig. 5 is the structural representation of second embodiment that module is set in the Provider Edge equipment of the present invention;
Fig. 6 is the first specific embodiment method flow diagram of accessing multi-protocol label switch virtual special-purpose network of the present invention;
Fig. 7 is the second specific embodiment method flow diagram of accessing multi-protocol label switch virtual special-purpose network of the present invention.
Embodiment
The embodiment of the invention provides a kind of method and a kind of Provider Edge equipment of accessing multi-protocol label switch virtual special-purpose network, describes the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
See also Fig. 3, Fig. 3 shows the structural representation of the Provider Edge equipment of the embodiment of the invention, comprise: module 31 is set, be used at least two different Virtual Ethernets of every Virtual Leased Lines setting, described different Virtual Ethernet is respectively on different loopback plates; Receiver module 32 is used for the data flow by every Virtual Leased Lines of the reception of the Virtual Ethernet on the loopback plate; Detection module 33, whether the loopback plate that is used to detect the data flow of each bar Virtual Leased Lines of current carrying breaks down; Testing result processing module 34, be used for when detection module 33 testing results when being, the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate; Forwarding module 35 is used to transmit the data flow that receiver module 32 receives.
See also Fig. 4, Fig. 4 shows the structural representation of first embodiment that module is set in the Provider Edge equipment of the present invention, comprising: subelement 311 is set, is used at least two different Virtual Ethernets are arranged to the trunking interface; First dispensing unit 312 is used to described trunking interface of every Virtual Leased Lines configuration.
See also Fig. 5, Fig. 5 shows the structural representation of second embodiment that module is set in the Provider Edge equipment of the present invention, comprise: second dispensing unit 313, main with Virtual Ethernet and at least one standby Virtual Ethernet for one of every Virtual Leased Lines configuration, described master is different Virtual Ethernets with Virtual Ethernet with described standby Virtual Ethernet.
Below in conjunction with Fig. 6, further specify the method for the accessing multi-protocol label switch virtual special-purpose network in the embodiment of the invention, Fig. 6 shows the method flow diagram of first specific embodiment of accessing multi-protocol label switch virtual special-purpose network of the present invention, comprises the steps:
Step S601: the data flow that receives every Virtual Leased Lines by the Virtual Ethernet that disposes the trunking interface on the loopback plate;
Particularly, need be trunking interface of every Virtual Leased Lines configuration, described trunking interface comprises at least two different Virtual Ethernets.Trunking interface (Trunk) is an important channel of bandwidth expansion and link backup, can bundle a plurality of physical ports and be used as a logic port use, can get up to use the wide-band stack of many groups port, that is: Trunk can realize the mutually redundant function of the inner multilink of Trunk, when a link occurs fault, do not influence the work of other links, can also realize flow equalization between the multilink simultaneously.For example, on two blocks of loopback plates, creating ve interface respectively on the PE, suppose loopback plate 1 establishment VE1 and VE2, loopback plate 2 is created VE3 and VE4, wherein VE1 and VE3 carry user's 1 (VLL1) data flow, and VE2 and VE4 carrying user's 2 (VLL2) data flow is so just formed Trunk1 to VE1, VE3, VE2, VE4 form Trunk2, insert VLL1 and VLL2 respectively.
Step S602: detect the loopback plate and whether break down;
Particularly, when detecting certain piece loopback plate and break down, execution in step S603, when detecting when not having the loopback plate to break down, execution in step S604 then;
Step S603: the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate;
Particularly, when detecting certain piece loopback plate and break down, the Virtual Ethernet data carried by data stream on the loopback plate that breaks down is directly switch to the other Virtual Ethernet of the trunking interface under the described Virtual Ethernet.In step S601, Trunk1 and Trunk2 for VLL1 and VLL2 setting, Trunk1 comprises the VE1 of loopback plate 1 and the VE3 of loopback plate 2, Trunk2 comprises the VE2 of loopback plate 1 and the VE4 of loopback plate 2, when loopback plate 1 breaks down, and loopback plate 2 is also during operate as normal, and the flow of VLL1 and VLL2 just carries by the VE3 and the VE4 of loopback plate 2 respectively.
Step S604: by the loopback plate data flow is forwarded to P among the MPLS L3VPN, finishes the user and be linked into MPLS L3VPN from MPLS L2VPN.
Below in conjunction with Fig. 7, further specify the method for the accessing multi-protocol label switch virtual special-purpose network in the embodiment of the invention, Fig. 7 shows the method flow diagram of second specific embodiment of accessing multi-protocol label switch virtual special-purpose network of the present invention, comprises the steps:
Step S701: by disposing the data flow that standby Virtual Ethernet receives every Virtual Leased Lines on the loopback plate;
Particularly, need be main with Virtual Ethernet and at least one standby Virtual Ethernet for one of every Virtual Leased Lines configuration.Described master is different Virtual Ethernets with Virtual Ethernet with described standby Virtual Ethernet, described master is provided with identical MPLS L2VPN label with Virtual Ethernet and described standby Virtual Ethernet, carries data flow by main with Virtual Ethernet.For example, on two blocks of loopback plates, creating ve interface respectively on the PE, suppose loopback plate 1 establishment VE1 and VE2, loopback plate 2 is created VE3 and VE4, wherein VE1 and VE3 carry the data flow of VLL1, the data flow of VE2 and VE4 carrying VLL2, so VE1 and VE3 are inserted VLL1, it is the main interface of using that VE1 is set, VE3 is a spare interface, and VE2 and VE4 are linked into VLL2, and it is the main interface of using that VE2 is set, VE4 is a spare interface, key-course is that VLL1 and VLL2 distribute MPLS L2VPN label, and VE master is assigned to identical MPLS L2VPN label with interface with corresponding spare interface, and is issued to forwarding layer, data flow is only transmitted with interface from VE master, and standby ve interface is in stand-by state.
Step S702: detect the loopback plate and whether break down;
Particularly, when detecting certain piece loopback plate and break down, execution in step S703, when detecting when not having the loopback plate to break down, execution in step S704 then;
Step S703: the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate;
Particularly, so when detecting certain piece loopback plate and break down, main on the described loopback plate that breaks down switched on the standby Virtual Ethernet that has identical MPLS L2VPN label on the other loopback plate with Virtual Ethernet data carried by data stream.In step S701, the master who is provided with for VLL1 uses virtual interface VE1 (on loopback plate 1) and standby virtual interface VE3 (on loopback plate 2), the master who is provided with for VLL2 uses virtual interface VE2 (on loopback plate 1) and standby virtual interface VE4 (on loopback plate 2), when loopback plate 1 breaks down, the PE key-course is provided with VE3, VE4 and leads with interface and be issued to transmit layer, transmit the data flow that layer adopts VE3, VE4 interface to carry VLL1 and VLL2, promptly user's flow carries by the VE3 and the VE4 of loopback plate 2.Need to prove that after 1 fault recovery of loopback plate, VE1 and VE2 continue to insert among VLL1 and the VLL2, but are in the spare interface state.
Step S704: by the loopback plate data flow is forwarded to P among the MPLS L3VPN, finishes the user and be linked into MPLS L3VPN from MPLS L2VPN.
Need to prove, in the handoff procedure of primary, spare loopback plate, as two or more standby loopback plates, when two or more standby Virtual Ethernet is promptly arranged, system will switch on the standby Virtual Ethernet with identical MPLS L2VPN label at random.
Need to prove, will be understood by those skilled in the art that, the method of a kind of accessing multi-protocol label switch virtual special-purpose network that the embodiment of the invention proposes can be passed through computer program, instruction or programmable logic device programming and realize, and described program can be saved on the storage medium, as: CD, disk etc.
In sum, implement the embodiment of the invention, by being at least two different Virtual Ethernets of every Virtual Leased Lines setting, and this different Virtual Ethernet is respectively on different loopback plates, when certain piece loopback plate breaks down, flow just switches on the other loopback plate, make user's business long-time interruption can not occur, solved and after certain piece loopback plate breaks down, needed the manual loopback plate of changing in the prior art, thereby cause hundreds and thousands of service for leased-line customers that insert by this piece loopback plate long-time problem of interrupting to occur, improve the reliability of network, improve user satisfaction.
Above disclosed only is a kind of preferred embodiment in the embodiment of the invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (9)
1. the method for an accessing multi-protocol label switch virtual special-purpose network is characterized in that, comprises the steps:
Receive and transmit the data flow of Virtual Leased Lines by the Virtual Ethernet on the loopback plate of Provider Edge equipment, described loopback plate is used to connect multiprotocol label switching double-layer virtual private network and multi-protocol label switching three-layer Virtual Private Network, described every Virtual Leased Lines have at least two different Virtual Ethernets, and described different Virtual Ethernet is respectively on different loopback plates;
When detecting certain piece loopback plate and break down, the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate, be linked into the multi-protocol label switching three-layer Virtual Private Network from multiprotocol label switching double-layer virtual private network to finish the user.
2. the method for accessing multi-protocol label switch virtual special-purpose network as claimed in claim 1, it is characterized in that, described every Virtual Leased Lines have at least two different Virtual Ethernets and are specially: every Virtual Leased Lines dispose a trunking interface, and described trunking interface comprises at least two different Virtual Ethernets.
3. the method for accessing multi-protocol label switch virtual special-purpose network as claimed in claim 1, it is characterized in that described every Virtual Leased Lines have at least two different Virtual Ethernets and are specially: every Virtual Leased Lines dispose main Virtual Ethernet and at least one a standby Virtual Ethernet used.
4. the method for accessing multi-protocol label switch virtual special-purpose network as claimed in claim 2, it is characterized in that, when detecting certain piece loopback plate and break down, the described loopback plate data carried by data stream that breaks down switched on another piece loopback plate be specially: the other Virtual Ethernet that the Virtual Ethernet data carried by data stream on the loopback plate that breaks down is directly switch to the trunking interface under the described Virtual Ethernet.
5. the method for accessing multi-protocol label switch virtual special-purpose network as claimed in claim 3, it is characterized in that, the described label that is provided with identical multiprotocol label switching double-layer virtual private network MPLS L2VPN with Virtual Ethernet and described standby Virtual Ethernet of leading, described master is carried data flow with Virtual Ethernet.
6. the method for accessing multi-protocol label switch virtual special-purpose network as claimed in claim 5, it is characterized in that, when detecting certain piece loopback plate and break down, the described loopback plate data carried by data stream that breaks down switched on another piece loopback plate be specially: main on the described loopback plate that breaks down switched on the standby Virtual Ethernet that has identical MPLS L2VPN label on the other loopback plate with Virtual Ethernet data carried by data stream.
7. a Provider Edge equipment comprises the loopback plate, it is characterized in that, comprising:
Module is set, is used at least two different Virtual Ethernets of every Virtual Leased Lines setting, described different Virtual Ethernet is respectively on different loopback plates;
Receiver module is used for the data flow by the reception of the Virtual Ethernet on loopback plate Virtual Leased Lines;
Detection module, whether the loopback plate that is used to detect the data flow of each bar Virtual Leased Lines of current carrying breaks down;
The testing result processing module, be used for when described detection module testing result when being, the described loopback plate data carried by data stream that breaks down is switched on another piece loopback plate;
Forwarding module is used to transmit the data flow that described receiver module receives.
8. Provider Edge equipment as claimed in claim 7 is characterized in that, the described module that is provided with comprises:
Subelement is set, is used at least two different Virtual Ethernets are arranged to the trunking interface;
First dispensing unit is used to described trunking interface of every Virtual Leased Lines configuration.
9. Provider Edge equipment as claimed in claim 7 is characterized in that, the described module that is provided with comprises:
Second dispensing unit is main Virtual Ethernet and at least one standby Virtual Ethernet used of every Virtual Leased Lines configuration.
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| CN2008100269027A CN101252492B (en) | 2008-03-20 | 2008-03-20 | Method and apparatus for accessing multi-protocol label switch virtual special-purpose network |
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| CN2008100269027A CN101252492B (en) | 2008-03-20 | 2008-03-20 | Method and apparatus for accessing multi-protocol label switch virtual special-purpose network |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101902397B (en) * | 2010-06-23 | 2015-06-10 | 中兴通讯股份有限公司 | Message forwarding method and switching chip |
| CN102045263A (en) * | 2011-01-25 | 2011-05-04 | 神州数码网络(北京)有限公司 | Automatic gapless smooth switching method of backup link of multi protocol label switching virtual private network (MPLS VPN) tunnel |
| CN102209035B (en) * | 2011-05-25 | 2014-10-15 | 杭州华三通信技术有限公司 | Traffic forwarding method and devices |
| CN102291317B (en) * | 2011-09-15 | 2018-03-02 | 中兴通讯股份有限公司 | A kind of retransmission method and device of virtual private network packet |
| CN102594616B (en) * | 2011-11-23 | 2014-12-24 | 国家计算机网络与信息安全管理中心 | Network security detection method and device |
| CN103259678B (en) * | 2013-04-28 | 2016-06-08 | 华为技术有限公司 | Main/standby switching method, device, equipment and system |
| CN104283755B (en) * | 2013-07-01 | 2018-10-30 | 阿里巴巴集团控股有限公司 | A kind of virtual private cloud access method and system |
| CN105530661B (en) * | 2014-09-30 | 2018-09-21 | 中国电信股份有限公司 | Measure method, router and the system of L2+L3 VPN network performances |
| CN105049316B (en) * | 2015-08-26 | 2018-08-14 | 华为技术有限公司 | Communication means and communication equipment |
| CN106533769B (en) * | 2016-11-24 | 2019-12-13 | 华为技术有限公司 | fault recovery method and device |
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