CN101242335A - Multi-link load share processing device and method and MPLS VPN network device - Google Patents
Multi-link load share processing device and method and MPLS VPN network device Download PDFInfo
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- CN101242335A CN101242335A CNA200810006340XA CN200810006340A CN101242335A CN 101242335 A CN101242335 A CN 101242335A CN A200810006340X A CNA200810006340X A CN A200810006340XA CN 200810006340 A CN200810006340 A CN 200810006340A CN 101242335 A CN101242335 A CN 101242335A
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Abstract
The invention discloses a multilink load sharing processing unit used in MPLS VPN network equipment comprising a back board and a plurality of operation single boards connected with the back board, wherein the processing unit comprises: a data communication interface for receiving message form the back board; a data judging module for judging the type of data message based on a header of the data message; an MPLS processing module for performing a MPLS label process for the data message when the data message type is MPLS; a load sharing module for computing the MPLS label obtained form the MPLS label process based on the data message to determine a single board number and a terminal number for transmitting the data message. The technical proposal of the invention solves the problem that ASIC chip can not perform a link load sharing to ensure a good compatibility with the present switchgear, and reduces the difficulty and cost for re-developing a new product.
Description
Technical field
The present invention relates to the multilink transmission technology, relate in particular to processing unit, processing method and the MPLS VPN network equipment of the multi-link load share of a kind of MPLS of being used for (Multiple Protocol Label Switch multiprotocol label switching) VPN (Virtual Private Network) network equipment.
Background technology
In present Operation Network, the IP technology is used widely in operator and user because of its technical characterstic.In theory, the IP technology can be used any physical media, but its medium that uses at most is Ethernet now.Along with the extensive utilization of Ethernet, the user is more and more higher to the requirement of bandwidth and service quality, variously provides the standby redundancy technology between multi-link load share and the multilink to arise at the historic moment.Present layer 3 ethernet switch is with application-specific integrated circuit (ASIC) (Application Specific Integrated Circuit, being called for short ASIC) chip makees hardware and carries out surface speed forwarding, and the standby redundancy technology between multi-link load share and the multilink also all is integrated on the asic chip and realizes.
VPN sets up interim, a safe connection by a common network (normally the Internet), is tunnel safety, stable that passes chaotic common network.Usually, VPN is the expansion to intranet, helps long-distance user, corporate branch office, business parnter and supplier to connect with setting up believable safety between the intranet by it, and guarantees the safe transmission of data.
The Global Internet that VPN can be used for ever-increasing mobile subscriber inserts, to realize safe connection; VPN also is used to realize the virtual private circuit of secure communication between the enterprise web site, is connected to business parnter and user's safe extranet Virtual Private Network cost-effectively.
MPLS VPN is the novel vpn service that each big telecom operators of the nearest world fall over each other to develop, the exchange of MPLS VPN network using label: the corresponding customer traffic of label.In the forwarding of VPN grouping, use the two-stage label stack, use outer layer label to realize the VPN labeled packet, use the forwarding of the different VPN of vpn label identification in the MPLS network internal.
The implementation feature of MPLS VPN has determined the difference of MPLS VPN data traffic.The data message of MPLS VPN has added two-layer MPLS label between the IP of data message head and Ethernet frame head.This has caused asic chip that the limitation of load sharing technology when handling MPLS VPN data message of multilink transmission is provided.Because asic chip can be according to source MAC (the Medium Access Control of IP datagram literary composition, media interviews control) address, target MAC (Media Access Control) address, source IP address, information such as purpose IP address carry out based on IP traffic the load sharing of flow, but its source MAC of the data traffic of MPLS VPN, target MAC (Media Access Control) address all is device mac address usually, promptly fix, and the offset of two-layer MPLS label has also been added because of its data message in its IP address, cause when handling the address of MPLS message, need to handle the MPLS label.And the asic chip of prior art lacks special MPLS tag processes ability, so carry out the load sharing cost height of link, realizes complicated.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of processing unit, processing method and MPLS VPN network equipment of multi-link load share, to solve the high problem of link load sharing cost.
In an embodiment of the present invention, a kind of processing unit of multi-link load share is provided, be used for the MPLS VPN network equipment, this network equipment comprises backboard and a plurality of service boards that are connected by backboard, wherein, this processing unit comprises: data communication interface is used for from the backboard receiving data packets; The data judge module is used for the type according to the header judgment data message of data message; The MPLS processing module, being used for the judgment data type of message is that the data message of MPLS carries out the MPLS tag processes; And the load sharing module, be used for carrying out the resulting MPLS label of MPLS tag processes and calculate, with veneer that determine to transmit data message number and port numbers according to data message.
Preferably, the MPLS processing module comprise following one of at least: adding device is used for the MPLS message is added label; Revise the unit, be used for the MPLS message is revised label; Delete cells is used for MPLS message deletion label.
Preferably, processing unit further comprises: the Link State detection module, be used to detect the port status of MPLS message outbound port, and the load sharing module redefines veneer that data message transmits number and port numbers when port status is fault.
Preferably, processing unit also comprises: IP transmits processing module, being used for the judgment data type of message is the IP message of IP, the IP message is transmitted or is determined veneer that the IP message transmitted number and port numbers according to the purpose IP address of IP message according to the route forwarding table that obtains from backboard.
In an embodiment of the present invention, provide a kind of MPLS VPN network equipment again, comprised backboard and a plurality of service boards that are connected by backboard, wherein, the network equipment also comprises above-described processing unit.
In an embodiment of the present invention, a kind of processing method of multi-link load share also is provided, be used for the MPLS VPN network equipment, this method may further comprise the steps: step 1, and the processing unit that is set in the described MPLS VPN network equipment passes through the backboard receiving data packets of the data communication interface of the described MPLSVPN network equipment from the described MPLS VPN network equipment; Step 2, and according to the type of the header judgment data message of data message; Step 3 is that the data message of MPLS carries out the MPLS tag processes to the judgment data type of message; And step 4, carry out the resulting MPLS label of MPLS tag processes according to data message and calculate, with veneer that determine to transmit data message number and port numbers.
Preferably, in step 3, be that the data message of MPLS carries out following MPLS tag processes one of at least: add label, revise label and deletion label to the judgment data type of message.
Preferably, processing method also comprises: detect the port status of MPLS message outbound port, the load sharing module redefines veneer that data message transmits number and port numbers when port status is fault.
Preferably, processing method also comprises: to the judgment data type of message is the IP message of IP, the IP message is transmitted or is determined veneer that the IP message transmitted number and port numbers according to the purpose IP address of IP message according to the route forwarding table that obtains from backboard.
The processing unit of the multi-link load share of the above embodiment of the present invention, processing method and the MPLS VPN network equipment, by network processing unit being joined in the architecture of current switching equipment, special MPLS disposal ability is set in this processing unit, solved the problem that asic chip can't carry out link load sharing, thereby guaranteed and the favorable compatibility of existing switching equipment, reduced difficulty and the cost of researching and developing new product again.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the processing unit block diagram according to the multi-link load share of the embodiment of the invention;
Fig. 2 shows the processing unit block diagram of multi-link load share according to an embodiment of the invention;
Fig. 3 shows the MPLS VPN network equipment structure chart according to the embodiment of the invention;
Fig. 4 shows the process flow figure according to embodiment of the invention multi-link load share; And
Fig. 5 shows the process flow figure of multi-link load share according to a preferred embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, a kind of processing unit of multi-link load share has been proposed according to embodiments of the invention, be used for the MPLS VPN network equipment, this network equipment comprises backboard and a plurality of service boards that are connected by backboard, this processing unit comprises: data communication interface 102 is used for from the backboard receiving data packets; Data judge module 104 is used for the type according to the header judgment data message of data message; MPLS processing module 106, being used for the judgment data type of message is that the data message of MPLS carries out the MPLS tag processes; Load sharing module 108 is used for carrying out the resulting MPLS label of MPLS tag processes according to data message and calculates, veneer of being transmitted with the specified data message number and port numbers.
Obviously, this processing unit can be realized with network processing unit.By processing unit being joined in the architecture of current switching equipment, special MPLS disposal ability is set in this processing unit, solved the problem that asic chip can't carry out link load sharing, thereby guaranteed and the favorable compatibility of existing switching equipment, reduced difficulty and the cost of researching and developing new product again.
Wherein, MPLS processing module 106 can comprise: adding device is used for the MPLS message is added label; Revise the unit, be used for the MPLS message is revised label; Delete cells is used for MPLS message deletion label.The preferred embodiment has provided a kind of preferred structure of MPLS processing module 106.By this structure, MPLS processing module 106 can be carried out various special MPLS and be handled.
As shown in Figure 2, processing unit has according to a preferred embodiment of the invention increased Link State detection module 210, be used to detect the port status of MPLS message outbound port, notice load sharing module redefines veneer that data message transmits number and port numbers when port status is fault (Down), when port status is not then handled during for normal (Up).After adding the Link State detection module, this network processing device can also be handled various faults.
The preferred embodiment of Fig. 2 has also increased IP and has transmitted processing module 212, being used for the judgment data type of message is the IP message of IP, the IP message is transmitted or is determined veneer that the IP message transmitted number and port numbers according to the purpose IP address of IP message according to the route forwarding table that obtains from backboard.After adding IP forwarding processing module, this network processing device can also the process IP message.
As shown in Figure 3, proposed a kind of MPLS VPN network equipment again, comprised backboard 302 and a plurality of service boards 304 that are connected by backboard, also comprised the processing unit 306 of above-described multi-link load share according to embodiments of the invention.This embodiment is by joining network processing unit in the architecture of current switching equipment, special MPLS disposal ability is set in this processing unit, solved the problem that asic chip can't carry out link load sharing, thereby guaranteed and the favorable compatibility of existing switching equipment, reduced difficulty and the cost of researching and developing new product again.
Each service board is connected with backboard by its inner higig mouth, and processing unit (that is network processing unit) is connected with backboard.The asic chip of all service boards all connects with processing unit like this, and the realization of functions such as the load sharing of the whole network equipment only needs a network processing unit.
After data message enters backboard, data message is redirected to processing unit, processing unit adds the higig header at the data message head after transmitting the outbound port that calculates data message according to route forwarding table or MPLS, the module No. that comprises the outbound port place in the header, i.e. service board number and port numbers.Relevant service board delivered to data message again by processing unit, and data message forwarding is gone out.
As shown in Figure 4, also proposed a kind of processing method of multi-link load share, be used for the MPLS VPN network equipment, may further comprise the steps according to embodiments of the invention:
Step S402, the processing unit that is set in the MPLS VPN network equipment passes through the backboard receiving data packets of the data communication interface of the MPLS VPN network equipment from the MPLS VPN network equipment;
Step S404 is according to the type of the header judgment data message of data message;
Step S406 is that the data message of MPLS carries out the MPLS tag processes to the judgment data type of message;
Step S408 carries out the resulting MPLS label of MPLS tag processes according to data message and calculates, to determine veneer that message transmitted number and port numbers.
The processing method of this embodiment is by joining processing unit in the architecture of current switching equipment, special MPLS disposal ability is set in this processing unit, solved the problem that asic chip can't carry out link load sharing, thereby guaranteed and the favorable compatibility of existing switching equipment, reduced difficulty and the cost of researching and developing new product again.
Preferably, in step 3, be that the data message of MPLS carries out following MPLS tag processes one of at least: add label, revise label and deletion label to the judgment data type of message.
Preferably, processing method also comprises: detect the port status of MPLS message outbound port, the load sharing module redefines veneer that data message transmits number and port numbers when port status is fault.
Preferably, processing method also comprises: to the judgment data type of message is the IP message of IP, the IP message is transmitted or is determined veneer that the IP message transmitted number and port numbers according to the purpose IP address of IP message according to the route forwarding table that obtains from backboard.
As shown in Figure 5, the processing method of multi-link load share according to a preferred embodiment of the invention may further comprise the steps:
Step S502, data message is sent to processing unit by data communication interface;
Step S504 to S506, the type of the header judgment data message of inspection data message is if common IP message then carries out step S508, if the MPLS message then carries out step S510;
Step S508 searches route forwarding table, determines the outbound port of IP message, and adds one deck higig header outside data message, in order to determine the module No. and the port numbers of message outbound port, directly forwards step S514 to;
Step S510 searches the MPLS Label Forwarding Information Base, and the data message is carried out the interpolation of label, the operation of revising and deleting;
Step S512, the share strategy pre-configured according to the user carries out computing, calculates the outbound port of MPLS message, adds the higig header, determine the module No. and the port numbers of message outbound port, be forwarded to outbound port according to the information of higig head via data communication interface;
Step S514 to relevant service board, goes out data message forwarding with data message forwarding.
The preferred embodiment has provided the preferred flow of processing forward.
In a word, the processing unit of the multi-link load share of the above embodiment of the present invention, processing method and the MPLS VPN network equipment, by network processing unit being joined in the architecture of current switching equipment, special MPLS disposal ability is set in this processing unit, solved the problem that asic chip can't carry out link load sharing, thereby guaranteed and the favorable compatibility of existing switching equipment, reduced difficulty and the cost of researching and developing new product again.
Obviously, those skilled in the art should be understood that, above-mentioned each modular unit of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the processing unit of a multi-link load share is used for the MPLS VPN network equipment, and this network equipment comprises backboard and a plurality of service boards that are connected by described backboard, it is characterized in that described processing unit comprises:
Data communication interface is used for from described backboard receiving data packets;
The data judge module is used for judging according to the header of described data message the type of described data message;
The MPLS processing module is used for judging that the data message that described data message type is MPLS carries out the MPLS tag processes; And
The load sharing module is used for carrying out the resulting MPLS label of MPLS tag processes according to described data message and calculates, with veneer that determine to transmit described data message number and port numbers.
2. processing unit according to claim 1 is characterized in that, described MPLS processing module comprise following one of at least:
Adding device is used for described MPLS message is added label;
Revise the unit, be used for described MPLS message is revised label;
Delete cells is used for described MPLS message deletion label.
3. processing unit according to claim 2 is characterized in that, described processing unit further comprises:
The Link State detection module is used to detect the port status of described MPLS message outbound port, and described load sharing module redefines veneer that described data message transmits number and port numbers when described port status is fault.
4. processing unit according to claim 1 is characterized in that, described processing unit also comprises:
IP transmits processing module, be used for IP message, described IP message is transmitted or determined veneer that described IP message transmitted number and port numbers according to the purpose IP address of described IP message according to the route forwarding table that obtains from described backboard to judging that described data message type is IP.
5. a MPLS VPN network equipment comprises backboard and a plurality of service boards that are connected by described backboard, it is characterized in that, the described network equipment also comprises according to each described processing unit in the claim 1 to 4.
6. the processing method of a multi-link load share is used for the MPLS VPN network equipment, it is characterized in that, may further comprise the steps:
Step 1, the processing unit that is set in the described MPLS VPN network equipment passes through the backboard receiving data packets of the data communication interface of the described MPLS VPN network equipment from the described MPLS VPN network equipment;
Step 2 is judged the type of described data message according to the header of described data message;
Step 3 is carried out the MPLS tag processes to judging the data message that described data message type is MPLS; And
Step 4 is carried out the resulting MPLS label of MPLS tag processes according to described data message and is calculated, with veneer that determine to transmit described data message number and port numbers.
7. processing method according to claim 6 is characterized in that, in described step 3 to judging that data message that described data message type is MPLS carries out following MPLS tag processes one of at least: add label, revise label and deletion label.
8. processing method according to claim 7 is characterized in that, described processing method also comprises:
Detect the port status of described MPLS message outbound port, described load sharing module redefines veneer that described data message transmits number and port numbers when described port status is fault.
9. processing method according to claim 6 is characterized in that, described processing method also comprises:
To the IP message of judging that described data message type is IP, described IP message is transmitted or determined veneer that described IP message transmitted number and port numbers according to the purpose IP address of described IP message according to the route forwarding table that obtains from described backboard.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200810006340XA CN101242335A (en) | 2008-02-26 | 2008-02-26 | Multi-link load share processing device and method and MPLS VPN network device |
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| CNA200810006340XA CN101242335A (en) | 2008-02-26 | 2008-02-26 | Multi-link load share processing device and method and MPLS VPN network device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024837A (en) * | 2014-04-16 | 2015-11-04 | 中兴通讯股份有限公司 | Method of realizing bridge plate channel protection and apparatus thereof |
| CN105187320A (en) * | 2014-06-19 | 2015-12-23 | 中兴通讯股份有限公司 | MPLS load sharing processing method and device |
| CN109218200A (en) * | 2018-11-26 | 2019-01-15 | 新华三技术有限公司 | A kind of message processing method and device |
| CN111491334A (en) * | 2019-01-29 | 2020-08-04 | 中兴通讯股份有限公司 | Load sharing method, device, system, single board and storage medium |
-
2008
- 2008-02-26 CN CNA200810006340XA patent/CN101242335A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024837A (en) * | 2014-04-16 | 2015-11-04 | 中兴通讯股份有限公司 | Method of realizing bridge plate channel protection and apparatus thereof |
| CN105187320A (en) * | 2014-06-19 | 2015-12-23 | 中兴通讯股份有限公司 | MPLS load sharing processing method and device |
| CN109218200A (en) * | 2018-11-26 | 2019-01-15 | 新华三技术有限公司 | A kind of message processing method and device |
| CN109218200B (en) * | 2018-11-26 | 2021-05-28 | 新华三技术有限公司 | Message processing method and device |
| CN111491334A (en) * | 2019-01-29 | 2020-08-04 | 中兴通讯股份有限公司 | Load sharing method, device, system, single board and storage medium |
| WO2020156355A1 (en) * | 2019-01-29 | 2020-08-06 | 中兴通讯股份有限公司 | Load sharing method, device, system, single board and storage medium |
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Open date: 20080813 |