CN101729411A - Data transmission method and system based on PWE3 service - Google Patents
Data transmission method and system based on PWE3 service Download PDFInfo
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Abstract
The invention discloses data transmission method and system based on the PWE3 service. In the method, a first emulation service processing module encapsulates received raw data packets to obtain label data packets and transmits the label data packets to a first data processing and forwarding module; the first data processing and forwarding module reencapsulates the label data packets and transmits the encapsulated label data packets to a second data processing and forwarding module; the second data processing and forwarding module reencapsulates the label data packets and transmits the encapsulated label data packets to a second emulation service processing module; and the emulation service processing module restores the label data packets to raw data packets and transmits the raw data packets out. By the invention, the transmission of the non-Ethernet data stream based on the Pseudo Wire Emulation Edge-to-Edge (PWE3) service can be realized in a label forwarding mode.
Description
Technical field
The present invention relates to data communication field, be meant a kind of especially based on Pseudo Wire Emulation Edge-to-Edge (PWE3) professional data transmission method and system.
Background technology
Under telecommunication service IPization trend promotes, transmits net loaded business from being main to being to lead to change with IP with time division multiplexing (TDM, Time Division Multiplexing) and asynchronous transfer mode (ATM, Asynchronous TransferMode).TDM and ATM service needed are linked into Ethernet and transmit on Ethernet.
Based on Pseudo Wire Emulation Edge-to-Edge (PWE3, Pseudo Wire Emulation Edge to Edge) Ye Wu data transfer model as shown in Figure 1, data flow is from customer edge (CE, Customer Edge) 1 by access link (AC, Attachment Circuit) is linked into provider edge equipment (PE, ProviderEdge) 1; PE1 encapsulates data stream, adds pseudo-line (PW, Pseudo Wire) label and tunnel (Tunnel) label, and (PSN, Packet Switch Network) transmits by the packet exchange net; After data flow arrived PE2, PE2 flow to rower to data and signs strip operation, reverts to initial data, again initial data is sent to CE2 by AC, has so just finished the transfer of data based on the PWE3 business from CE1 to CE2.
For non-Ethernet data flow such as TDM that mails to CE2 from CE1 and ATM, PE1 at first needs will convert the packet of ethernet format from the non-Ethernet data flow that CE1 receives to by special artificial service processing module, and then gives the data processing forwarding module with packet and determine how to transmit.When PE2 issued CE2, the packet that the data processing forwarding module is handled in PE2 was given the artificial service processing module, by the artificial service processing module data packet recovery was become the non-Ethernet data flow again, afterwards data flow was forwarded.
In the practical application, have a kind of label forwarding mode that adopts to realize transmission demand based on the non-Ethernet data flow of PWE3 business, still, prior art also can't provide a kind of solution that satisfies this demand.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of data transmission method and system based on the PWE3 business, can realize carrying out transmission based on the non-Ethernet data flow of PWE3 business in the label forwarding mode.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of data transmission method based on the PWE3 business, this method comprises:
The first artificial service processing module encapsulates the raw data packets that receives, and obtains the label data bag, and sends to the first data processing forwarding module; The described first data processing forwarding module sends to the second data processing forwarding module after described label data bag is encapsulated again;
The described second data processing forwarding module sends to the second artificial service processing module after described label data bag is encapsulated again; The described second artificial service processing module sends after described label data bag is reverted to raw data packets.
Wherein, described first artificial service processing module and the described first data processing forwarding module are arranged in the first provider edge equipment PE;
Described second artificial service processing module and the described second data processing forwarding module are arranged in the 2nd PE.
Link to each other by inline mouthful between described first artificial service processing module and the described first data processing forwarding module and between described second artificial service processing module and the described second data processing forwarding module; Dispose a L 3 virtual local area network (LAN) VLAN interface on described inline mouthful.
The described first artificial service processing module encapsulates the raw data packets that receives, and obtains the label data bag, is specially:
The described first artificial service processing module obtains described outlet packaging information according to the mapping table of the AC information and the outlet packaging information of the access link AC information inquiry self of described raw data packets;
The described first artificial service processing module is encapsulated as the label data bag according to described outlet packaging information with described raw data packets, and sends to the described first data processing forwarding module by described three layers of VLAN interface.
Described AC information comprises port numbers and channel number;
Described outlet packaging information comprises: first service label, the inner three layers of VLAN interface of current PE, source artificial service processing module medium access control MAC Address, three layers of VLAN interface MAC Address of destination data processing forward module.
The described first data processing forwarding module encapsulates again to described label data bag, is specially:
The described first data processing forwarding module obtains exporting packaging information according to first label list of the inquiry of first service label in the described label data bag self;
The outlet packaging information that obtains according to inquiry first label list encapsulates again to described label data bag.
The outlet packaging information that described inquiry first label list obtains comprises: pseudo-line PW label, tunnel label, next jumps out a mouthful VLAN, source data processing forward module MAC Address and next jumps out a mouthful target MAC (Media Access Control) address.
The described second data processing forwarding module encapsulates again to described label data bag, is specially:
The described second data processing forwarding module is inquired about second label list of self according to the PW label of described label data bag, obtains exporting packaging information;
The outlet packaging information that obtains according to inquiry second label list encapsulates again to described label data bag, and sends to the described second artificial service processing module by described three layers of VLAN interface.
The outlet packaging information that described inquiry second label list obtains comprises: second service label, current PE inner three layers of VLAN interface, source data processing forward module MAC Address and purpose artificial service processing module MAC Address.
The described second artificial service processing module reverts to raw data packets with described label data bag and sends, and is specially:
The described second artificial service processing module is inquired about the service label of self and the mapping table of AC information according to second service label of described label data bag, obtains AC information;
Second service label, current PE inner three layers of VLAN interface, source data processing forward module MAC Address and purpose artificial service processing module MAC Address of described label data bag are peeled off, obtained raw data packets;
The AC information that obtains according to the mapping table of inquiry business label and AC information sends described raw data packets.
The present invention also provides a kind of data transmission system based on the PWE3 business, and this system comprises: the first artificial service processing module, the first data processing forwarding module, the second data processing forwarding module and the second artificial service processing module, wherein:
The described first artificial service processing module is used for the raw data packets that receives is encapsulated, and obtains the label data bag, and sends to the described first data processing forwarding module;
The described first data processing forwarding module after being used for described label data bag encapsulated again, sends to the described second data processing forwarding module;
The described second data processing forwarding module after being used for described label data bag encapsulated again, sends to the described second artificial service processing module;
The described second artificial service processing module sends after being used for described label data bag reverted to raw data packets.
Described first artificial service processing module and the described first data processing forwarding module are arranged in a PE;
Described second artificial service processing module and the described second data processing forwarding module are arranged in the 2nd PE.The present invention is based on the data transmission scheme of PWE3 business, an artificial service processing module and a data processing forward module are set in two provider edge equipment PE, and in artificial service processing module and data processing forwarding module, be provided with respectively transmit, as AC transmit, Label Forwarding Information Base; After artificial service processing module or data processing forwarding module receive packet, the corresponding key assignments inquiry of foundation is transmitted and is obtained the outlet packaging information, packet is transmitted with the form of label data bag, at last, by the artificial service processing module packaging information of packet is peeled off, revert to raw data packets, be sent to customer edge devices, so realized carrying out transmission based on the non-Ethernet data flow of PWE3 business in the label forwarding mode.
Description of drawings
Fig. 1 is the data transfer model based on the PWE3 business;
Fig. 2 is the internal structure schematic diagram of PE equipment of the present invention;
Fig. 3 is the schematic flow sheet that the present invention is based on the data transmission method of PWE3 business;
Fig. 4 is the flow chart that the present invention is based on the transfer of data embodiment one of PWE3 business;
Fig. 5 among the embodiment one among the present invention from the encapsulation figure of packet CE1 → PE1;
Fig. 6 is the flow chart that the present invention is based on the transfer of data embodiment two of PWE3 business;
Fig. 7 among the embodiment two among the present invention from the encapsulation figure of packet PE2 → CE2;
Fig. 8 is the structural representation that the present invention is based on the data transmission system of PWE3 business.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
The present invention is based on the data transmission scheme of PWE3 business, the mode of employing label forwarding realizes the transmission based on the non-Ethernet data flow of PWE3 business.
Data transfer model based on PWE3 business shown in Figure 1, the transmission course of non-Ethernet data flow (abbreviation data flow) is as can be seen: CE1 → AC side → PE1 → PW side → PE2 → AC side → CE2, among the present invention, the transmission course of CE1 → AC side → PE1 is called transmission course from CE1 → PE1; The transmission course of PW side → PE2 → AC side → CE2 is called transmission course from PE2 → CE2.
In above-mentioned transmission course, key is the processing of PE equipment to data flow.Be illustrated in figure 2 as the internal structure schematic diagram of PE equipment, comprise an artificial service processing module 201, can realize and a data processing forward module 202 by an emulation chip in the practical application, can realize in the practical application that both actings in conjunction realize the processing to data flow by a network processing unit.Wherein, artificial service processing module 201 links to each other by inline mouthful with data processing forwarding module 202, in order to realize forwarding based on the data flow of the mode of label forwarding, L 3 virtual local area network (LAN) (VLAN of configuration on above-mentioned inline mouthful, Virtual Local Area Network) interface, these three layers of VLAN interfaces are corresponding same VLAN value and different medium access control (MAC, Media Access Control) addresses on artificial service processing module 201 and data processing forwarding module 202; Also need on artificial service processing module 201 and data processing forwarding module 202, dispose respectively and transmit,, will in the embodiment of back, describe herein in order to obtain packaging information to packet.
It is to be noted, the setting of three layers of VLAN interface between artificial service processing module and the data processing forwarding module, its main purposes are that designation data processing forward module or artificial service processing module adopt the mode of label forwarding of the present invention to handle this packet.
Based on the data transfer model of above-mentioned PWE3 business and the structure of PE equipment, the transfer of data flow process that the present invention is based on the PWE3 business comprises as shown in Figure 3:
Step 301, the first artificial service processing module encapsulates the raw data packets that receives, and obtains the label data bag, and sends to the first data processing forwarding module.
Step 302, the first data processing forwarding module send to the second data processing forwarding module after the label data bag is encapsulated again.
Step 303, the second data processing forwarding module send to the second artificial service processing module after the label data bag is encapsulated again.
Step 304, the second artificial service processing module send after the label data bag is reverted to raw data packets.
Follow-up description for convenience is called PE1 the one PE here, and PE2 is become the 2nd PE; Then above-mentioned first artificial service processing module and the described first data processing forwarding module are arranged in a PE, the second artificial service processing module and the second data processing forwarding module and are arranged in the 2nd PE.
Below by specific embodiment above-mentioned transfer process is described.Figure 4 shows that the flow chart of the transfer of data embodiment one that the present invention is based on the PWE3 business, this flow process has specifically described the transmission course of data flow from CE1 → PE1, and corresponding step 301 and step 302 comprise:
Model based on Fig. 1, CE1 sends to PE1, i.e. a PE with the non-Ethernet data flow by AC, the first artificial service processing module of the one PE receives the non-Ethernet data flow with the form of packet, and this packet is a raw data packets, and structure is shown in Fig. 5 (a).Follow-up process object all is based on packet.
AC between CE1 and the PE1 has many, article one, a passage when AC inserts PE1 under the corresponding port, AC information generally comprises the port numbers and the channel number of above-mentioned port, has shown that this raw data packets enters a PE from the AC of CE1 by this passage correspondence under this port.
Having comprised an AC in the first artificial service processing module transmits: the mapping table of AC information and outlet packaging information, and being provided with of this table is as follows:
Key assignments: AC information;
The result: the outlet packaging information comprises:
First service label is represented the type of service of this packet, corresponding current PE equipment (PE), as Label1; Some specific data stream in different PE equipment the corresponding service label may be different, as corresponding Label1 in a PE, corresponding Label2 in the 2nd PE, concrete is provided with according to self-demand by the user;
The inner three layers of VLAN interface of current PE refer to three layers of VLAN interface between the first artificial service processing module and the first data processing forwarding module on current PE (i.e. a PE) equipment, with the VLAN value, represent as VLAN1;
Source artificial service processing module MAC Address refers to the MAC Address of current artificial service processing module (the first artificial service processing module) self, as SMAC1, also can be referred to as source emulation chip MAC Address;
Three layers of VLAN interface MAC Address of destination data processing forward module, three layers of VLAN interface that refer to current PE equipment (i.e. a PE) on the first data processing forwarding module corresponding MAC Address, as DMAC1, also can be referred to as purpose network processing unit inside VLAN interface MAC Address.
Whether step 403～404 find occurrence, and if not, the first artificial service processing module abandons the raw data packets that receives; If, execution in step 405.
Described occurrence refers to that promptly the AC information with packet is the pairing result of key assignments, promptly exports packaging information.
Step 405 is encapsulated as the label data bag according to the outlet packaging information that obtains with raw data packets, and sends to the first data processing forwarding module.
The first artificial service processing module, encapsulates this raw data packets after corresponding outlet packaging information according to the AC information searching of raw data packets, obtains the label data bag, and its data structure is shown in Fig. 5 (b).
Send to the first data processing forwarding module after the encapsulation, concrete, the first artificial service processing module sends to the first data processing forwarding module by three layers of VLAN interface with the label data bag.
The first data processing forwarding module comprises a Label Forwarding Information Base: first label list, storage be from first service label (as Label1) of the label data bag of the first artificial service processing module and the corresponding relation of outlet packaging information.Being provided with of this table is as follows:
Key assignments: first service label (as Label1);
The result: the outlet packaging information comprises:
The PW label, refer to that this label data bag is gone out from current data processing forward module (the first data processing forwarding module) after, in PSN when transmission employed PW label, as PW Label1;
Tunnel label, refer to that this label data bag is gone out from current data processing forward module (the first data processing forwarding module) after, the label of the PSN tunnel that transmission the time is flowed through in PSN, as Tunnel Label1;
Next jumps out a mouthful VLAN, refer to this label data bag from current data processing forward module (the first data processing forwarding module) when going out the VLAN interface on the first data processing forwarding module of process, with the VLAN value, represent as VLAN2; It is pointed out that three layers of VLAN interface of process when the label data bag enters the first data processing forwarding module, the VLAN interface of process is different when going out the first data processing forwarding module;
Source data processing forward module MAC Address refers to the MAC Address of current data processing forward module (the first data processing forwarding module), as SMAC2, also can be referred to as source network processor MAC Address;
Next jumps out a mouthful target MAC (Media Access Control) address, refers to the MAC Address of the data processing forwarding module place intermediate equipment that this label data bag will enter, as DMAC2.
Whether step 407 finds occurrence, and if not, execution in step 404 is with data packet discarding; If, execution in step 408.
Step 408 encapsulates again the label data bag according to the outlet packaging information that obtains, and sends to the PW side.
The first data processing forwarding module encapsulates the label data bag again according to the outlet packaging information with first service label (as Label1) coupling, and the label data bag after the encapsulation and sends to the 2nd PE by PW shown in Fig. 5 (c) again.Then a PE finishes the handling process of packet.
It is pointed out that from the transmission course of a PE to the two PE data flow also will be through the forwarding of a plurality of intermediate equipments.At data flow transmission method of the present invention, in intermediate equipment, mainly data stream is handled by the data processing forwarding module.The data processing forwarding module of intermediate equipment is searched the Label Forwarding Information Base of self according to the tunnel label of label data bag, obtains exporting packaging information; And according to this outlet packaging information to the label data bag carry out tunnel label, next jumps out a mouthful VLAN, source network processor MAC Address and next jumps out the replacement operation of mouthful target MAC (Media Access Control) address, then the label data bag is transmitted to next and jumps intermediate equipment, up to PE2.
Figure 6 shows that the flow chart of the transfer of data embodiment two that the present invention is based on the PWE3 business, this flow process has specifically described the transmission course of data flow from PE2 → CE2, and corresponding step 303 and step 304 comprise:
Label data wraps in the forwarding of PW side through intermediate equipment, arrives the 2nd PE at last.It is to be noted, if time short of the tunnel label support in the label data bag goes out, then final jump intermediate equipment, i.e. last jumping intermediate equipment the tunnel label of label data bag peeled off of the 2nd PE, then the label data bag that receives of the 2nd PE does not comprise tunnel label shown in Fig. 7 (a); If the tunnel label in the label data bag does not support time short to go out, then do not carry out peeling off of tunnel label, comprise tunnel label in the label data bag that the 2nd PE receives.
In the 2nd PE, receive from the next label data bag of PW side (promptly transmitting) through intermediate equipment by the second data processing forwarding module.
The second data processing forwarding module comprises a Label Forwarding Information Base: second label list, wherein storage is from the PW label of the label data bag of PW side and the corresponding relation of outlet packaging information.Being provided with of being somebody's turn to do is as follows:
Key assignments: PW label;
The result: the outlet packaging information comprises:
Second service label is used to represent the type of service of this packet, corresponding current PE equipment (the 2nd PE), as Label2;
The inner three layers of VLAN interface of current PE, three layers of VLAN interface between the expression last second artificial service processing module of current PE equipment (the 2nd PE) and the second data processing forwarding module are with the VLAN value representation, as VLAN3;
Source data processing forward module MAC Address refers to the MAC Address of current data processing forward module (the second data processing forwarding module), as SMAC3, also can be referred to as source network processor MAC Address;
Purpose artificial service processing module MAC Address refers to the MAC Address of the artificial service processing module (the second artificial service processing module) that this label data bag will enter, as DMAC3, also can be referred to as purpose emulation chip MAC Address.
Whether step 603～604 find occurrence, and if not, the second data processing forwarding module abandons current label data bag; If, execution in step 605.
Step 605 encapsulates again the label data bag according to the outlet packaging information that obtains, and sends to the second artificial service processing module.
Based on the outlet packaging information described in the step 602, the label data bag after the encapsulation is shown in Fig. 7 (b) again.The second data processing forwarding module sends to the second artificial service processing module on the 2nd PE by three layers of VLAN interface with the label data bag.
Preserved a Label Forwarding Information Base in the second artificial service processing module: the mapping table of service label and AC information, specifically being provided with of this table is as follows:
Key assignments: second service label;
The result: AC information, this AC information comprise a port numbers and a channel number, have shown that packet enters CE2 from the AC of the 2nd PE by this passage correspondence under this port.
Whether step 607 finds occurrence, and if not, execution in step 604, the second artificial service processing modules abandon the label data bag; If, execution in step 608.
After the second artificial service processing module finds the AC information of coupling according to second service label of label data bag, second service label, current PE inner three layers of VLAN interface, source data processing forward module MAC Address and purpose artificial service processing module MAC Address of this label data bag are peeled off, the label data bag is reverted to raw data packets, shown in Fig. 7 (c), then according to AC information, raw data packets is sent to CE2 by AC, and this flow process finishes.
In order to realize above-mentioned data transmission method, the invention provides a kind of data transmission system of the PWE3 of the present invention is based on business, as shown in Figure 8, comprise a PE 10 and the 2nd PE 20, wherein;
The one PE 10 comprises:
The first artificial service processing module 11 is used for the raw data packets that receives is encapsulated, and obtains the label data bag, and sends to the first data processing forwarding module 12;
The first data processing forwarding module 12 after being used for described label data bag encapsulated again, sends to the second data processing forwarding module 21;
The 2nd PE 20 comprises:
The second data processing forwarding module 21 after being used for described label data bag encapsulated again, sends to the second artificial service processing module 22;
The second artificial service processing module 22 sends after being used for described label data bag reverted to raw data packets.
Based on the data transfer model based on the PWE3 business shown in Figure 1, when packet when CE1 transfers to CE2, an above-mentioned PE 10 is applied to PE1, the 2nd PE 20 is applied to PE2; In addition, the first artificial service processing module 11, the second artificial service processing module 22 can realize by an emulation chip; The first data processing forwarding module 12, the second data processing forwarding module 21 can be realized by a network processing unit.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. the data transmission method based on the PWE3 business is characterized in that, this method comprises:
The first artificial service processing module encapsulates the raw data packets that receives, and obtains the label data bag, and sends to the first data processing forwarding module; The described first data processing forwarding module sends to the second data processing forwarding module after described label data bag is encapsulated again;
The described second data processing forwarding module sends to the second artificial service processing module after described label data bag is encapsulated again; The described second artificial service processing module sends after described label data bag is reverted to raw data packets.
2. according to the described data transmission method of claim 1, it is characterized in that described first artificial service processing module and the described first data processing forwarding module are arranged in the first provider edge equipment PE based on the PWE3 business;
Described second artificial service processing module and the described second data processing forwarding module are arranged in the 2nd PE.
3. according to the described data transmission method of claim 2, it is characterized in that based on the PWE3 business,
Link to each other by inline mouthful between described first artificial service processing module and the described first data processing forwarding module and between described second artificial service processing module and the described second data processing forwarding module; Dispose a L 3 virtual local area network (LAN) VLAN interface on described inline mouthful.
4. according to the described data transmission method of claim 3, it is characterized in that the described first artificial service processing module encapsulates the raw data packets that receives, and obtains the label data bag, is specially based on the PWE3 business:
The described first artificial service processing module obtains described outlet packaging information according to the mapping table of the AC information and the outlet packaging information of the access link AC information inquiry self of described raw data packets;
The described first artificial service processing module is encapsulated as the label data bag according to described outlet packaging information with described raw data packets, and sends to the described first data processing forwarding module by described three layers of VLAN interface.
5. according to the described data transmission method of claim 4, it is characterized in that described AC information comprises port numbers and channel number based on the PWE3 business;
Described outlet packaging information comprises: first service label, the inner three layers of VLAN interface of current PE, source artificial service processing module medium access control MAC Address, three layers of VLAN interface MAC Address of destination data processing forward module.
6. according to the described data transmission method of claim 5, it is characterized in that the described first data processing forwarding module encapsulates again to described label data bag, is specially based on the PWE3 business:
The described first data processing forwarding module obtains exporting packaging information according to first label list of the inquiry of first service label in the described label data bag self;
The outlet packaging information that obtains according to inquiry first label list encapsulates again to described label data bag.
7. according to the described data transmission method of claim 6 based on the PWE3 business, it is characterized in that, the outlet packaging information that described inquiry first label list obtains comprises: pseudo-line PW label, tunnel label, next jumps out a mouthful VLAN, source data processing forward module MAC Address and next jumps out a mouthful target MAC (Media Access Control) address.
8. according to the described data transmission method of claim 7, it is characterized in that the described second data processing forwarding module encapsulates again to described label data bag, is specially based on the PWE3 business:
The described second data processing forwarding module is inquired about second label list of self according to the PW label of described label data bag, obtains exporting packaging information;
The outlet packaging information that obtains according to inquiry second label list encapsulates again to described label data bag, and sends to the described second artificial service processing module by described three layers of VLAN interface.
9. the described according to Claim 8 data transmission method based on the PWE3 business is characterized in that,
The outlet packaging information that described inquiry second label list obtains comprises: second service label, current PE inner three layers of VLAN interface, source data processing forward module MAC Address and purpose artificial service processing module MAC Address.
10. according to the described data transmission method of claim 9, it is characterized in that the described second artificial service processing module reverts to raw data packets with described label data bag and sends, and is specially based on the PWE3 business:
The described second artificial service processing module is inquired about the service label of self and the mapping table of AC information according to second service label of described label data bag, obtains AC information;
Second service label, current PE inner three layers of VLAN interface, source data processing forward module MAC Address and purpose artificial service processing module MAC Address of described label data bag are peeled off, obtained raw data packets;
The AC information that obtains according to the mapping table of inquiry business label and AC information sends described raw data packets.
11. the data transmission system based on the PWE3 business is characterized in that, this system comprises: the first artificial service processing module, the first data processing forwarding module, the second data processing forwarding module and the second artificial service processing module, wherein:
The described first artificial service processing module is used for the raw data packets that receives is encapsulated, and obtains the label data bag, and sends to the described first data processing forwarding module;
The described first data processing forwarding module after being used for described label data bag encapsulated again, sends to the described second data processing forwarding module;
The described second data processing forwarding module after being used for described label data bag encapsulated again, sends to the described second artificial service processing module;
The described second artificial service processing module sends after being used for described label data bag reverted to raw data packets.
12. according to the described data transmission system of claim 11, it is characterized in that based on the PWE3 business,
Described first artificial service processing module and the described first data processing forwarding module are arranged in a PE;
Described second artificial service processing module and the described second data processing forwarding module are arranged in the 2nd PE.
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| CN105591800A (en) * | 2015-07-29 | 2016-05-18 | 杭州华三通信技术有限公司 | Traffic protection method and device |
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| CN101001196A (en) * | 2007-01-25 | 2007-07-18 | 华为技术有限公司 | Method and device for setting pseudo-line tunnel and transmitting message using it |
| CN100558072C (en) * | 2007-07-20 | 2009-11-04 | 华为技术有限公司 | The method of converting message in three-layer virtual special network, system and equipment |
| CN101132365B (en) * | 2007-08-31 | 2010-09-15 | 华为技术有限公司 | Message bypassed transmission method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105591800A (en) * | 2015-07-29 | 2016-05-18 | 杭州华三通信技术有限公司 | Traffic protection method and device |
| CN105591800B (en) * | 2015-07-29 | 2019-05-24 | 新华三技术有限公司 | Flow rate protecting method and device |
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