CN104753754A - Method and apparatus for transmitting messages - Google Patents
Method and apparatus for transmitting messages Download PDFInfo
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- CN104753754A CN104753754A CN201510108540.6A CN201510108540A CN104753754A CN 104753754 A CN104753754 A CN 104753754A CN 201510108540 A CN201510108540 A CN 201510108540A CN 104753754 A CN104753754 A CN 104753754A
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Abstract
The invention discloses a method and an apparatus for transmitting messages. The method comprises the following steps: a first PE device allocates a bypass PW for an AC corresponding to each CE device; the first PE device receives a first message to be transmitted to a target CE device; if the AC corresponding to the target CE device is out of order, the first PE device determines the bypass PW corresponding to the AC corresponding to the target CE device and sends the first message to a second PE device via the bypass PW, and the second PE device sends the first message to the target CE device. According to the method, the bypass PW is introduced to protect the AC so that the traffic of the CE device out of order in link can be forwarded normally.
Description
Technical field
The present invention relates to communication technical field, especially relate to a kind of transmission method and equipment of message.
Background technology
In MPLS (Multiprotocol Label Switching, multiprotocol label switching) network, can E-Packet based on label, for message transmits the mode providing high-speed and high-efficiency in backbone network.VPLS (Virtual Private LAN Service, Virtual Private LAN Service) be the typical apply of MPLS, can be connected by the backbone network of service provider and belong to same VPN (Virtual Private Network, VPN (virtual private network)), be positioned at the user site of diverse geographic location, be therefore widely applied.
As shown in Figure 1, for the networking schematic diagram of VPLS network, at PE1 (Provider Edge, service provider network edge), PE2 and PE3 is configured with VPLS business, the active and standby PW of configuration (Pseudowire, pseudo-line) in VSI (Virtual SwitchInstance, virtual switch instance) on PE1, the opposite end of main PW is PE2, and the opposite end of standby PW is PE3.CE1 (Customer Edge, customer network edge) by AC (Attachment Circuit, place in circuit, namely the physical circuit of CE with PE or virtual circuit is connected) mode is connected with PE1, CE2 is connected with PE2 with PE3 respectively by AC mode, to form the dual-homed of CE2, CE3 is connected with PE2 with PE3 respectively by AC mode, to form the dual-homed of CE3.
Under normal circumstances, CE1 sends to the forward-path of the message of CE3 to be: CE1-PE1-PE2-CE3, CE1 send to the forward-path of the message of CE2 to be: CE1-PE1-PE2-CE2.During link occurs fault between PE1 and PE2, can carry out active and standby PW switching, CE1 sends to the forward-path of the message of CE3 to be: CE1-PE1-PE3-CE3, CE1 send to the forward-path of the message of CE2 to be: CE1-PE1-PE3-CE2.
But if the link occurs fault between PE2 and CE3, then PE1 can not link occurs fault between perception PE2 and CE3, and therefore, PE1 can not carry out active and standby PW switching, and namely CE1 still sends to the message of CE3 to send to PE2 by PE1.Due to the link occurs fault between PE2 and CE3, therefore, message cannot be sent to CE3 by PE2, thus causes the flow between CE1 and CE3 to interrupt.
Summary of the invention
The embodiment of the present invention provides a kind of transmission method of message, be applied in Virtual Private LAN Service VPLS network, link between first service provider network edge PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and the 3rd PE equipment are respectively main pseudo-line PW and standby PW, the equal dual homed of multiple customer network edge CE equipment belongs to a PE equipment and the 2nd PE equipment, and described method comprises:
A described PE equipment is that the place in circuit AC that each CE equipment in described multiple CE equipment is corresponding configures bypass PW, and described bypass PW is the PW between a PE equipment and the 2nd PE equipment; A described PE equipment reception is from first message giving object CE equipment to be sent of the 3rd PE equipment;
If the AC that described object CE equipment is corresponding breaks down, then a described PE equipment determines the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the bypass PW determined, described first message is sent to described 2nd PE equipment, by described 2nd PE equipment, described first message is sent to described object CE equipment.
Described method comprises further:
When the AC that described object CE equipment is corresponding breaks down, bypass PW corresponding for described AC is set to normal up state by a described PE equipment; When bypass PW is up state, a described PE equipment allows, by described bypass PW, described first message is sent to described 2nd PE equipment; When the AC that described object CE equipment is corresponding does not break down, bypass PW corresponding for described AC is set to block block state by a described PE equipment; When bypass PW is block state, a described PE equipment does not allow, by described bypass PW, described first message is sent to described 2nd PE equipment.
After bypass PW corresponding for described AC is set to normal up state by a described PE equipment, described method comprises further:
A described PE equipment is when knowing AC fault recovery corresponding to described object CE equipment, and bypass PW corresponding for described AC is adjusted to block state by up state by a described PE equipment.
Described method comprises further:
When described object CE equipment sends the second message to the source CE equipment of described 3rd PE equipment connection, a described PE equipment receives described second message from described 2nd PE equipment by the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the main PW between a described PE equipment and described 3rd PE equipment or standby PW, described second message is sent to described 3rd PE equipment.
The PE device address, opposite end of the bypass PW of a described PE Equipments Setting is the loopback port address of described 2nd PE equipment.
The embodiment of the present invention provides a kind of service provider network edge PE equipment, is applied in Virtual Private LAN Service VPLS network as a PE equipment; Wherein, link between a described PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and described 3rd PE equipment are respectively main pseudo-line PW and standby PW, and the equal dual homed of multiple customer network edge CE equipment belongs to a described PE equipment and described 2nd PE equipment, a described PE equipment specifically comprises:
Configuration module, configure bypass PW for the place in circuit AC corresponding for each CE equipment in described multiple CE equipment, described bypass PW is the PW between a PE equipment and the 2nd PE equipment; Receiver module, to be sent to the first message of object CE equipment for what receive from the 3rd PE equipment;
Sending module, when breaking down for the AC corresponding when described object CE equipment, then determine the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the bypass PW determined, described first message is sent to described 2nd PE equipment, by described 2nd PE equipment, described first message is sent to described object CE equipment.
Described configuration module, when also breaking down for the AC corresponding at described object CE equipment, is set to normal up state by bypass PW corresponding for described AC; When described bypass PW is up state, then allow, by described bypass PW, described first message is sent to described 2nd PE equipment;
When the AC that described object CE equipment is corresponding does not break down, bypass PW corresponding for described AC is set to block block state; When described bypass PW is block state, then do not allow, by described bypass PW, described first message is sent to described 2nd PE equipment.
Described configuration module, also for after bypass PW corresponding for described AC is set to normal up state, when knowing AC fault recovery corresponding to described object CE equipment, is then adjusted to block state by bypass PW corresponding for described AC by up state.
Described receiver module, also for when described object CE equipment sends the second message to the source CE equipment of described 3rd PE equipment connection, receives described second message from described 2nd PE equipment by the bypass PW that AC that described object CE equipment is corresponding is corresponding;
Described sending module, also for described second message being sent to described 3rd PE equipment by the main PW between a described PE equipment and described 3rd PE equipment or standby PW.
The PE device address, opposite end of described bypass PW is the loopback port address of described 2nd PE equipment.
Based on technique scheme; in the embodiment of the present invention; belong in the active and standby PW networking of identical PE equipment at multiple CE equipment dual homed; by introducing bypass PW, AC is protected; thus the problem that after solution link occurs fault, flow is obstructed, the flow of the CE equipment of link occurs fault can normally be forwarded.
Accompanying drawing explanation
Fig. 1 is the networking schematic diagram of the VPLS network proposed in prior art;
Fig. 2 is the transmission method schematic flow sheet of a kind of message that the embodiment of the present invention provides;
Fig. 3 is the structural representation of a kind of PE equipment that the embodiment of the present invention provides.
Embodiment
For problems of the prior art, the embodiment of the present invention provides a kind of transmission method of message, the method is applied in VPLS network, in the networking of the dual-homed active and standby PW of the many CE equipment as VPLS, and dual homed belongs to two identical PE equipment while of multiple CE equipment (two or more CE equipment), these two PE equipment are respectively a PE equipment and the 2nd PE equipment, and based on this, the equal dual homed of multiple CE equipment belongs to a PE equipment and the 2nd PE equipment.Wherein, link between one PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and the 3rd PE equipment are respectively main PW and standby PW, such as, the link between a PE equipment and the 3rd PE equipment is main PW, and the link between the 2nd PE equipment and the 3rd PE equipment is standby PW; Or the link between a PE equipment and the 3rd PE equipment is standby PW, and the link between the 2nd PE equipment and the 3rd PE equipment is main PW.
Take Fig. 1 as the application scenarios schematic diagram of the embodiment of the present invention, a PE equipment is PE2, and the 2nd PE equipment is PE3, and the 3rd PE equipment is PE1.PE1, PE2 and PE3 are configured with VPLS business.PW between PE2 and PE1 is main PW between PW, PE3 and PE1 is standby PW.CE1 is connected with PE1 by AC mode, and CE2 is connected with PE2 and PE3 respectively by AC mode, and to form the dual-homed of CE2, CE3 is connected with PE2 and PE3 by AC mode, respectively to form the dual-homed of CE3.
Under above-mentioned application scenarios, as shown in Figure 2, the transmission method of this message can comprise the following steps:
Step 201, a PE equipment is that the AC that each CE equipment in multiple CE equipment (namely dual homed belongs to multiple CE equipment of a PE equipment and the 2nd PE equipment) is corresponding configures bypass PW (i.e. standbyPW).Wherein, this bypass PW is the PW between a PE equipment and the 2nd PE equipment.
In like manner, the 2nd PE equipment is that the AC that each CE equipment in multiple CE equipment (namely dual homed belongs to multiple CE equipment of a PE equipment and the 2nd PE equipment) is corresponding configures bypass PW.The process of the 2nd PE equipment is identical with the process of a PE equipment, for a PE equipment in the embodiment of the present invention.
In the embodiment of the present invention, the PE device address, opposite end of the bypass PW of a PE Equipments Setting is the loopback port address (i.e. loopback interface IP address) of the 2nd PE equipment.Further, the PE device address, opposite end of the bypass PW of the 2nd PE Equipments Setting is the loopback port address of a PE equipment.
Under the application scenarios shown in Fig. 1, PE2 is that dual homed belongs to AC1 corresponding to the CE2 of PE2 and PE3 and configures bypass PW1, and this bypass PW1 is the PW between PE2 and PE3, and this bypass PW1 is for the protection of the AC1 of PE2 to CE2.PE2 is that dual homed belongs to AC2 corresponding to the CE3 of PE2 and PE3 and configures bypass PW2, and this bypass PW2 is the PW between PE2 and PE3, and this bypass PW2 is for the protection of the AC2 of PE2 to CE3.In like manner, PE3 is that dual homed belongs to AC3 corresponding to the CE2 of PE2 and PE3 and configures bypass PW1, and this bypass PW1 is the PW between PE2 and PE3, and this bypass PW1 is for the protection of the AC3 of PE3 to CE2.PE3 is that dual homed belongs to AC4 corresponding to the CE3 of PE2 and PE3 and configures bypass PW2, and this bypass PW2 is the PW between PE2 and PE3, and this bypass PW2 is for the protection of the AC4 of PE3 to CE3.Wherein, PW is two-way, and the opposite end of the bypass PW1/PW2 of PE2 configuration is the loopback port address of PE3, and the opposite end of the bypass PW1/PW2 of PE3 configuration is the loopback port address of PE2.
In the embodiment of the present invention; introduce bypass PW; bypass PW has with properties: (1) inherits the attribute of common standby PW (as MAC Address (Media Access Control; media interviews control) study, label (label) distribute, institute's protocols having payment and forwarding etc.); difference is that common standby PW protects main PW, and bypass PW protects AC.(2) bypass PW has three kinds of state: down (fault) states, represents that bypass PW is not successfully established; Block (obstruction) state, represents that bypass PW is successfully established, but can not transmit message, be in stand-by state; Up (normally) state, represents that bypass PW is successfully established, and can transmit message, be in using state.(3) be normal condition at protected AC, and when bypass PW is successfully established, the state of bypass PW is block state, does not carry out message repeating; If when protected AC breaks down, the state of bypass PW becomes up state, serves as role's (not belonging to network side) of AC, allows to carry out message repeating.(4) be normal condition at protected AC; if the state of bypass PW is block state; and the state of bypass PW is when being block state by up recovering state; if protected AC is in normal condition always; then by Interface status down/up corresponding for AC once, to notify the MAC Address that CE unit deletion is corresponding with the interface that the AC of PE equipment connects.(5) for the message received from bypass PW, if protected AC is normal condition, this message can be forwarded to protected AC, can not be sent to other AC and other PW; If when protected AC breaks down, forward if the non-learning MAC address of bypass PW carries out broadcast, then this message can be forwarded to other AC and other PW; If bypass PW have learned MAC Address carry out unicast forwarding, then this message can not be sent to other AC and other PW.(6) protection of bypass PW to AC is one to one, and namely a bypass PW can only protect an AC.
Step 202, a PE equipment reception, from first message giving object CE equipment to be sent of the 3rd PE equipment, judges whether the AC that this object CE equipment is corresponding breaks down.If the AC that this object CE equipment is corresponding breaks down, then perform step 203; If the AC that this object CE equipment is corresponding does not break down, then perform step 204.
As shown in Figure 1, when CE1 (i.e. source CE equipment) sends the first message to CE3 (i.e. object CE equipment), PE1 receives the first message from CE1, and by main PW, the first message is sent to PE2, PE2 reception, from first message giving CE3 to be sent of PE1, judges whether the AC that CE3 is corresponding breaks down.If the AC that CE3 is corresponding breaks down, perform step 203; If the AC that CE3 is corresponding does not break down, perform step 204.
Step 203, the bypass PW that the AC that a PE equipment determination object CE equipment is corresponding is corresponding, and by this bypass PW determined, the first message is sent to the 2nd PE equipment, by the 2nd PE equipment, the first message is sent to object CE equipment.Such as, PE2 determines the bypass PW that AC that CE3 is corresponding is corresponding, and by the bypass PW that this is determined, the first message is sent to PE3, and the first message, after receiving the first message, is sent to CE3 by PE3.
Step 204, the first message is sent to object CE equipment by the AC that object CE equipment is corresponding by a PE equipment.Such as, the first message is directly sent to CE3 by the AC that CE3 is corresponding by PE2.
In the embodiment of the present invention, when the AC that object CE equipment is corresponding breaks down, then bypass PW corresponding for this AC is set to up state by a PE equipment; Further, when bypass PW is up state, then a PE equipment allows, by this bypass PW, the first message is sent to the 2nd PE equipment.
In the embodiment of the present invention, when the AC that object CE equipment is corresponding does not break down, then bypass PW corresponding for this AC is set to block state by a PE equipment; Further, when bypass PW is block state, then a PE equipment does not allow, by bypass PW, the first message is sent to the 2nd PE equipment.
Based on this, during link failure between PE2 and CE3, the AC between PE2 and CE3 breaks down (i.e. AC state down), and the MAC address entries that now AC is corresponding can be deleted.Bypass PW corresponding for this AC is set to up state (namely from block status modifier be up state) by PE2.PE2 is when receiving CE1 and sending to the message of CE3, because the bypass PW that the AC that CE3 is corresponding is corresponding is up state, therefore PE2 allows, by this bypass PW, message is sent to PE3, and namely PE2 adds label corresponding to this bypass PW in message, and by this bypass PW, message is sent to PE3.PE3, after receiving message, resolves label, and this message of perception is the message received from bypass PW, and after peeling label off to message, this message is sent to CE3 from the AC that this bypass PW is corresponding by PE3.
In the embodiment of the present invention, one PE equipment is after the bypass PW that AC is corresponding is set to normal up state, if a PE equipment is when knowing AC fault recovery corresponding to object CE equipment, then bypass PW corresponding for this AC is adjusted to block state by up state by a PE equipment.
Based on this, after the link failure recovery between PE2 and CE3, the AC fault recovery between PE2 and CE3, therefore, bypass PW corresponding for this AC is set to block state (namely from up status modifier be block state) by PE2.AC state due to PE3 and CE3 is normal condition always, under therefore PE3 binding the Interface status down/up of VPLS, to notify the MAC Address that CE3 delete interface is corresponding.Further, PE2 is when receiving CE1 and sending to the message of CE3, because the bypass PW that the AC that CE3 is corresponding is corresponding is block state, therefore PE2 does not allow, by this bypass PW, message is sent to PE3, and this message directly can be sent to CE3 by the AC that CE3 is corresponding by PE2.
In the embodiment of the present invention, when the link occurs fault of object CE equipment and a PE equipment, when object CE equipment (with the object CE equipment of the link failure of a PE equipment) sends the second message to the source CE equipment of the 3rd PE equipment connection, one PE equipment passes through second message of bypass PW reception corresponding to AC corresponding to this object CE equipment from the 2nd PE equipment, and by the main PW between a PE equipment and the 3rd PE equipment or standby PW, the second message is sent to the 3rd PE equipment, by the 3rd PE equipment, the second message is sent to source CE equipment.When the link of object CE equipment and a PE equipment does not break down, when object CE equipment sends the second message to the source CE equipment of the 3rd PE equipment connection, one PE equipment directly receives the second message from object CE equipment by the AC that object CE equipment is corresponding, and by the main PW between a PE equipment and the 3rd PE equipment or standby PW, the second message is sent to the 3rd PE equipment, by the 3rd PE equipment, the second message is sent to source CE equipment.
When CE3 (i.e. object CE equipment) sends the second message to CE1 (i.e. source CE equipment), due to the link failure between PE2 and CE3, namely the AC between PE2 and CE3 breaks down, therefore, second message is sent to PE3 by CE3, and PE3 meeting this second message of broadcast transmission or clean culture send this second message.Further, PE3 is when needing to send this second message by the bypass PW that AC that CE3 is corresponding is corresponding, and PE3 adds label corresponding to this bypass PW in message, and by this bypass PW, message is sent to PE2.PE2 passes through second message of bypass PW reception corresponding to AC corresponding to CE3 from PE3, label is resolved, this second message of perception is the message received from bypass PW, after label is peeled off to message, by the main PW between PE2 and PE1, the second message is sent to PE1, by PE1, the second message is sent to CE1.
Based on technique scheme; in the embodiment of the present invention; belong in the active and standby PW networking of identical PE equipment at multiple CE equipment dual homed; by introducing bypass PW, AC is protected; thus the problem that after solution link occurs fault, flow is obstructed, the flow of the CE equipment of link occurs fault can normally be forwarded.
Based on the inventive concept same with said method, in the embodiment of the present invention, additionally provide a kind of PE equipment, be applied in VPLS network as a PE equipment; Wherein, link between a described PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and described 3rd PE equipment are respectively main pseudo-line PW and standby PW, and the equal dual homed of multiple customer network edge CE equipment belongs to a described PE equipment and described 2nd PE equipment, as shown in Figure 3, a described PE equipment specifically comprises:
Configuration module 11, configure bypass PW for the place in circuit AC corresponding for each CE equipment in described multiple CE equipment, described bypass PW is the PW between a PE equipment and the 2nd PE equipment;
Receiver module 12, to be sent to the first message of object CE equipment for what receive from the 3rd PE equipment;
Sending module 13, when breaking down for the AC corresponding when described object CE equipment, then determine the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the bypass PW determined, described first message is sent to described 2nd PE equipment, by described 2nd PE equipment, described first message is sent to described object CE equipment.
Described configuration module 11, when also breaking down for the AC corresponding at described object CE equipment, is set to normal up state by bypass PW corresponding for described AC; When described bypass PW is up state, then allow, by described bypass PW, described first message is sent to described 2nd PE equipment;
When the AC that described object CE equipment is corresponding does not break down, bypass PW corresponding for described AC is set to block block state; When described bypass PW is block state, then do not allow, by described bypass PW, described first message is sent to described 2nd PE equipment.
Described configuration module 11, also for after bypass PW corresponding for described AC is set to normal up state, when knowing AC fault recovery corresponding to described object CE equipment, is then adjusted to block state by bypass PW corresponding for described AC by up state.
Described receiver module 12, also for when described object CE equipment sends the second message to the source CE equipment of described 3rd PE equipment connection, receives described second message from described 2nd PE equipment by the bypass PW that AC that described object CE equipment is corresponding is corresponding;
Described sending module 13, also for described second message being sent to described 3rd PE equipment by the main PW between a described PE equipment and described 3rd PE equipment or standby PW.
The PE device address, opposite end of described bypass PW is the loopback port address of described 2nd PE equipment.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can be separated deployment.Above-mentioned module can merge into a module, also can split into multiple submodule further.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. the transmission method of a message, be applied to Virtual Private LAN Service VPLS network, link between first service provider network edge PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and the 3rd PE equipment are respectively main pseudo-line PW and standby PW, the equal dual homed of multiple customer network edge CE equipment belongs to a described PE equipment and the 2nd PE equipment, it is characterized in that, described method comprises:
A described PE equipment is that the place in circuit AC that each CE equipment in described multiple CE equipment is corresponding configures bypass PW, and described bypass PW is the PW between a PE equipment and the 2nd PE equipment;
A described PE equipment reception is from first message giving object CE equipment to be sent of the 3rd PE equipment;
If the AC that described object CE equipment is corresponding breaks down, then a described PE equipment determines the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the bypass PW determined, described first message is sent to described 2nd PE equipment, by described 2nd PE equipment, described first message is sent to described object CE equipment.
2. the method for claim 1, is characterized in that, described method comprises further:
When the AC that described object CE equipment is corresponding breaks down, bypass PW corresponding for described AC is set to normal up state by a described PE equipment; When bypass PW is up state, a described PE equipment allows, by described bypass PW, described first message is sent to described 2nd PE equipment;
When the AC that described object CE equipment is corresponding does not break down, bypass PW corresponding for described AC is set to block block state by a described PE equipment; When bypass PW is block state, a described PE equipment does not allow, by described bypass PW, described first message is sent to described 2nd PE equipment.
3. method as claimed in claim 2, it is characterized in that, after bypass PW corresponding for described AC is set to normal up state by a described PE equipment, described method comprises further:
A described PE equipment is when knowing AC fault recovery corresponding to described object CE equipment, and bypass PW corresponding for described AC is adjusted to block state by up state by a described PE equipment.
4. the method for claim 1, is characterized in that, described method comprises further:
When described object CE equipment sends the second message to the source CE equipment of described 3rd PE equipment connection, a described PE equipment receives described second message from described 2nd PE equipment by the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the main PW between a described PE equipment and described 3rd PE equipment or standby PW, described second message is sent to described 3rd PE equipment.
5. the method as described in any one of claim 1-4, is characterized in that, the PE device address, opposite end of the bypass PW of a described PE Equipments Setting is the loopback port address of described 2nd PE equipment.
6. a service provider network edge PE equipment, is applied in Virtual Private LAN Service VPLS network as a PE equipment; Wherein, link between a described PE equipment and the 3rd PE equipment, link between the 2nd PE equipment and described 3rd PE equipment are respectively main pseudo-line PW and standby PW, and the equal dual homed of multiple customer network edge CE equipment belongs to a described PE equipment and described 2nd PE equipment, it is characterized in that, a described PE equipment specifically comprises:
Configuration module, configure bypass PW for the place in circuit AC corresponding for each CE equipment in described multiple CE equipment, described bypass PW is the PW between a PE equipment and the 2nd PE equipment;
Receiver module, to be sent to the first message of object CE equipment for what receive from the 3rd PE equipment;
Sending module, when breaking down for the AC corresponding when described object CE equipment, then determine the bypass PW that AC that described object CE equipment is corresponding is corresponding, and by the bypass PW determined, described first message is sent to described 2nd PE equipment, by described 2nd PE equipment, described first message is sent to described object CE equipment.
7. PE equipment as claimed in claim 6, is characterized in that,
Described configuration module, when also breaking down for the AC corresponding at described object CE equipment, is set to normal up state by bypass PW corresponding for described AC; When described bypass PW is up state, then allow, by described bypass PW, described first message is sent to described 2nd PE equipment;
When the AC that described object CE equipment is corresponding does not break down, bypass PW corresponding for described AC is set to block block state; When described bypass PW is block state, then do not allow, by described bypass PW, described first message is sent to described 2nd PE equipment.
8. PE equipment as claimed in claim 7, is characterized in that,
Described configuration module, also for after bypass PW corresponding for described AC is set to normal up state, when knowing AC fault recovery corresponding to described object CE equipment, is then adjusted to block state by bypass PW corresponding for described AC by up state.
9. PE equipment as claimed in claim 6, is characterized in that,
Described receiver module, also for when described object CE equipment sends the second message to the source CE equipment of described 3rd PE equipment connection, receives described second message from described 2nd PE equipment by the bypass PW that AC that described object CE equipment is corresponding is corresponding;
Described sending module, also for described second message being sent to described 3rd PE equipment by the main PW between a described PE equipment and described 3rd PE equipment or standby PW.
10. the PE equipment as described in any one of claim 6-9, is characterized in that, the PE device address, opposite end of described bypass PW is the loopback port address of described 2nd PE equipment.
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| CN201510108540.6A CN104753754A (en) | 2015-03-12 | 2015-03-12 | Method and apparatus for transmitting messages |
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| WO2018113294A1 (en) * | 2016-12-20 | 2018-06-28 | 华为技术有限公司 | Method, device and system for forwarding packet |
| CN109672619A (en) * | 2017-10-17 | 2019-04-23 | 华为技术有限公司 | A kind of method, equipment and system handling message |
| WO2020001389A1 (en) * | 2018-06-30 | 2020-01-02 | 华为技术有限公司 | Communication method, device and system for avoiding loop |
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