CN102970172B - A kind of method that communication link switches, equipment and communication system - Google Patents
A kind of method that communication link switches, equipment and communication system Download PDFInfo
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- CN102970172B CN102970172B CN201210518041.0A CN201210518041A CN102970172B CN 102970172 B CN102970172 B CN 102970172B CN 201210518041 A CN201210518041 A CN 201210518041A CN 102970172 B CN102970172 B CN 102970172B
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Abstract
The invention provides method, equipment and communication system that a kind of communication link switches, relate to the communications field, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.The method comprises: the first network element device sends the first message to the second network element device by the transmission link of the first link, and described first message is used for notifying that described second network element device carries out link switching; Described first network element device sends the second message to described second network element device by the transmission link of the second link, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.Embodiments of the invention are applied to network message transmission.
Description
Technical field
The present invention relates to the communications field, particularly relate to method, equipment and communication system that a kind of communication link switches.
Background technology
In communication network, network element device carries out the transmission of message by the communication link be arranged between network element device, at support LACP (LinkAggregationControlProtocol, link aggregate control protocol) agreement network element device networking scene in, when there is single-ended interruption in the receiver of a network element device, due to the link aggregation group (LinkAggregationGroup of this network element device, be called for short LAG) port stop send message to another network element device, and another network element device cannot know whether this receiver breaks down, so this another network element device can continue to send message by this faulty link, in the conventional method because this network element device can stop when finding out receiver fault sending message to another network element device, therefore this another network element device find out receive message time-out after can initiatively by current failure link switching to the link of proper communication, therefore find out link occurs fault from this network element device and have one period of stand-by period to another network element device switch communication links, if wherein waiting time is set to long period, then according to IEEE (InstituteofElectricalandElectronicsEngineers, IEEE-USA) 802.3 standards suggestion regulation waiting times duration be 90 seconds, or be set to the short period, then advise that the duration of regulation waiting time is 3 seconds according to IEEE802.3 standard, in the process of this link switching, inventor finds, the problem of length time of delay is there is in prior art in link switching, this will cause the net element communication professional chief time to be interrupted.
Summary of the invention
Method, equipment and communication system that embodiments of the invention provide a kind of communication link to switch, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, a kind of method providing communication link to switch, comprising:
First network element device sends the first message to the second network element device by the transmission link of the first link, and described first message is used for notifying that described second network element device carries out link switching;
Described first network element device sends the second message to described second network element device by the transmission link of the second link, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
In the implementation that the first is possible, in conjunction with first aspect, before described first network element device sends the first message to the second network element device by the transmission link of the first link, described method also comprises:
Described first network element device detects that the receiver of the first link between described first network element device and described second network element device breaks down.
In the implementation that the second is possible, in conjunction with first aspect or the first possible implementation, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
In the third mode in the cards, in conjunction with first aspect or the first possible implementation, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
Second aspect, a kind of method providing communication link to switch, comprising:
Second network element device receives the first message by the transmission link of the first link, and described first message is used for notifying that described second network element device carries out link switching;
Described second network element device receives the second message by the transmission link of the second link, and described second message is the proper communication message between described first network element device and described second network element device;
Described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
In the implementation that the first is possible, in conjunction with second aspect, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
In the implementation that the second is possible, in conjunction with second aspect, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
The third aspect, provides a kind of first network element device, comprising:
First transmitting element, for sending the first message to the second network element device by the transmission link of the first link, described first message is used for notifying that described second network element device carries out link switching;
Second transmitting element, also for being sent the second message by the transmission link of the second link to described second network element device, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
In the implementation that the first is possible, in conjunction with the third aspect, before described first network element device sends the first message to the second network element device by the transmission link of the first link, described equipment also comprises:
Detecting unit, for detecting that the receiver of the first link between described first network element device and described second network element device breaks down.
In the implementation that the second is possible, in conjunction with the third aspect or the first possible implementation, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
In the third mode in the cards, in conjunction with the third aspect or the first possible implementation, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
Fourth aspect, provides a kind of second network element device, comprising:
First receiving element, receives the first message for the transmission link by the first link, and described first message is used for notifying that described second network element device carries out link switching;
Second receiving element, also receives the second message for the transmission link by the second link, and described second message is the proper communication message between described first network element device and described second network element device;
Link switching unit, for being undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
In the implementation that the first is possible, in conjunction with fourth aspect, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
In the implementation that the second is possible, in conjunction with fourth aspect, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
5th aspect, provides a kind of communication system, comprising: at least two network element devices, is linked together between described network element device by least two links, wherein, in two network element devices connected:
First network element device, for sending the first message to the second network element device by the transmission link of the first link, described first message is used for notifying that described second network element device carries out link switching; Also for being sent the second message by the transmission link of the second link to described second network element device, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message;
Second network element device, receives the first message for the transmission link by the first link, and described first message is used for notifying that described second network element device carries out link switching; Receive the second message for the transmission link by the second link, described second message is the proper communication message between described first network element device and described second network element device; Also for being undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
In the implementation that the first is possible, in conjunction with the third aspect, the receiver of described first network element device also for detecting the first link between described first network element device and described second network element device breaks down.
In the implementation that the second is possible, in conjunction with the third aspect or the first possible implementation, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
In the implementation that the third is possible, in conjunction with the third aspect or the first possible implementation, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
The method that communication link provided by the invention switches, equipment and communication system, when the first network element device detects and between the second network element device, the receiver of the first link breaks down, first network element device sends the first message being used for link switching by the first chain road direction second network element device, the second message being used for proper communication is sent by the second chain road direction second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device, shorten or eliminate the time that between network element device, communication link switches, thus reduce the probability of the service disconnection between network element device in communication link handoff procedure.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic flow sheet of a kind of communication link changing method that Fig. 1 provides for embodiments of the invention;
The flow chart schematic diagram of the another kind of communication link changing method that Fig. 2 provides for embodiments of the invention;
The flow chart schematic diagram of a kind of communication link changing method that Fig. 3 provides for another embodiment of the present invention;
The structural representation of a kind of first network element device that Fig. 4 provides for embodiments of the invention;
The structural representation of a kind of second network element device that Fig. 5 provides for embodiments of the invention;
The structural representation of a kind of first network element device that Fig. 6 provides for another embodiment of the present invention;
The structural representation of a kind of second network element device that Fig. 7 provides for another embodiment of the present invention;
Fig. 8 provides a kind of structural representation of communication system for embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments of the invention are used for based on LACP (LinkAggregationControlProtocol, link aggregate control protocol) communication system of agreement under unsupported apportionment mode between network element device link occur single-ended disconnected fine time link switching, be specially when only having a Member Link to have flow to exist when between the aggregation group network element device of this communication system, other link is then in Status of Backups, and when active link fails in aggregation group (single-ended disconnected fine situation occurs), one is selected as active link using being in the link of Status of Backups between aggregation group network element device, to shield the inefficacy of current ink, wherein communication system here can be Long Term Evolution (LongTermEvolution, be called for short LTE), third generation partner program (The3rdGenerationPartnershipProject, be called for short 3GPP) and evolution version under communication system, the method of a kind of communication link switching is the invention provides based on above communication system, with reference to shown in Fig. 1, in the first network element device side as message source, comprise following flow process:
101, the first network element device sends the first message to the second network element device by the transmission link of the first link, and this first message is used for notifying that the second network element device carries out link switching.
Concrete, the first link comprises transmission link and receiver; Here the first network element device is sent by the transmission link of the first link in the process of the first message to the second network element device, first network element device can be the first message sending identical content to the second network element device continuously, so that the second network element device switches to the second link after confirmation receives the first message receive message.
Further, first message be the first link receiver and send the non-polymeric and nonsynchronous message of link, here due to the first message be the first link receiver and to send link be non-polymeric and asynchronous, therefore the second network element device can not select the receiver of the first link to send message to the first network element device after the transmission link of the first link receives the first message, but select other link to carry out and message transmissions between the first network element device, thus achieve the function of being carried out link switching by the first message notifying second network element device.
Here the first message provided by the invention is with link aggregate control protocol data cell (LinkAggregationControlProtocolDataUnit, being called for short LACPDU) message is example, namely at link aggregate control protocol (LinkAggregationControlProtocol, be called for short LACP) under the first message be sent to the second network element device by the first network element device by the transmission link of the first link, wherein the first message can not to be polymerized and asynchronous with the message of the port accepts of receiver at the port of the receiver of current first link, exemplary, the content of this first message can be the first network element device port status variable, wherein this first network element device port status variable specifically comprises: polymerization position is 0, synchronous mark position is 0, time-out position be 1 and default identification position be 1, here being polymerized position is that the port of the receive chain terminal of current first link of 0 expression can not be polymerized, synchronous mark position is that the receiver of the first link between 0 expression this first network element device and second network element device is not in aggregation group, time-out position be 1 and default identification position be 1, wherein overtime position be the receiver of 1 expression first link port accepts message time-out, default identification position is used to indicate current first network element device and receives by the receiver of the first link the state that the second network element device sends message, when the first link wherein between two network elements is normal, default identification position be 0 be used to indicate the first link normal time the first network element device receive the second network element device by the receiver of the first link and send the state of message, when being therefore set to 1 when the default identification position in the first message changes by default identification position, second network element can obtain the first network element device according to this default logo position and receive the change receiver of i.e. the first link of the state of message and break down, therefore the receiving terminal of current first link normally cannot receive the message that the second network element device sends, need the second network element device by current first link switching to the second link.
102, the first network element device sends the second message to the second network element device by the transmission link of the second link, this second message is the proper communication message between the first network element device and the second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
Wherein the second link comprises transmission link and receiver; Further, second message be the second link receiver and send link aggregation and synchronous message, here due to the second message be the second link receiver and to send link synchronous for polymerization, therefore the second network element selects the second link to carry out and message transmissions between the first network element device after the first link occurs fault, thus achieves the function of the second network element device by the first link switching to the second link and the first network element device proper communication.
The second message that the first same network element device sends also is link aggregate control protocol data unit message (LinkAggregationControlProtocolDataUnit, be called for short LACPDU), exemplary, first network element device can be the first network element device port status variable by the second message content that the transmission link of the second link sends, and wherein this first network element device port status variable specifically comprises: polymerization position is 1, synchronous mark position is 1, here the port polymerizable that position is the receiver of current second link of 1 expression is polymerized, synchronous mark position is the receiver of the second link between 1 expression this first network element device and second network element device and sends link in aggregation group, wherein, because the transmission link of the second link and receiver are normal communication state, then do not relate to default identification position and overtime position state variable parameter or overtime position is set to 0 and default identification position be set to 0, time-out position is that the port accepts message of the receiver of 0 expression second link is normal, the reiving/transmitting state default value of the first network element device is that 0 expression is used to indicate that to receive the state of message by current receiver normal.
First message provided by the invention and the second message belong to link aggregate control protocol data cell (LinkAggregationControlProtocolDataUnit, be called for short LACPDU) message, but the first message provided by the invention and the second message are not limited only to such message.
The invention provides the method that another kind of communication link switches, with reference to shown in Fig. 2, comprise following flow process in the second network element device side as link switching:
201, the second network element device receives the first message by the transmission link of the first link, and this first message is used for notifying that the second network element device carries out link switching.
Concrete, the first link comprises transmission link and receiver; Here the second network element device receives in the process of the first message by the transmission link of the first link, first network element device can be the first message sending identical content to the second network element device continuously, so that the second network element device confirms that receiving the first message switches to the second link reception message.
202, the second network element device receives the second message by the transmission link of the second link.
The second concrete message is the proper communication message between the first network element device and the second network element device, and wherein the second link comprises transmission link and receiver.
203, the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
First message provided by the invention and the second message belong to link aggregate control protocol data unit message (LinkAggregationControlProtocolDataUnit, be called for short LACPDU), but the first message provided by the invention and the second message are not limited only to such message.
The method that the communication link that the embodiment of the present invention provides switches, first network element device sends the first message being used for link switching by the first chain road direction second network element device, the second message being used for proper communication is sent by the second chain road direction second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides the method that another communication link switches, with reference to shown in Fig. 3, comprise following flow process:
301, the first network element device detects that the receiver of the first link between the first network element device and the second network element device breaks down.
Here the receiver of the first link breaks down as cannot normally receive from the second network element device the communication message that the second network element device sent by the receiver of the first link.
302, the first network element device sends the first message to the second network element device by the transmission link of the first link, and this first message is used for notifying that the second network element device carries out link switching.
Concrete, the first link comprises transmission link and receiver; Here the first network element device is sent by the transmission link of the first link in the process of the first message to the second network element device, first network element device can be the first message sending identical content to the second network element device continuously, so that the second network element device confirms that receiving the first message switches to the second link reception message.
Further, first message be the first link receiver and send the non-polymeric and nonsynchronous message of link, here due to the first message be the first link receiver and to send link be non-polymeric and asynchronous, therefore the second network element device can not select the receiver of the first link to send message to the first network element device after the transmission link of the first link receives the first message, but select other link to carry out and message transmissions between the first network element device, thus achieve the function that the first message notifying second network element device carries out link switching.
303, the second network element device receives the first message by the transmission link of the first link, and this first message is used for notifying that the second network element device carries out link switching.
Concrete, the first link comprises transmission link and receiver; Here the second network element device receives in the process of the first message by the transmission link of the first link, first network element device can be the first message sending identical content to the second network element device continuously, so that the second network element device confirms that receiving the first message switches to the second link reception message.
304, the first network element device sends the second message to the second network element device by the transmission link of the second link, this second message is the proper communication message between the first network element device and the second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
Wherein, the second link comprises and sends link and receiver, further, the second message be the second link receiver and send link aggregation and synchronous message.Here due to the second message be the second link receiver and to send link synchronous for polymerization, therefore the second network element selects the second link to carry out and message transmissions between the first network element device after the first link occurs fault, thus achieves the function of the second network element device by the first link switching to the second link and the first network element device proper communication.
Here the second message that the first network element device sends is link aggregate control protocol data unit message (LinkAggregationControlProtocolDataUnit is called for short LACPDU).
305, the second network element device receives the second message by the transmission link of the second link.
Concrete, the second message is the proper communication message between the first network element device and the second network element device, and wherein the second link comprises transmission link and receiver.
306, the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
First message provided by the invention and the second message belong to link aggregate control protocol data unit message (LinkAggregationControlProtocolDataUnit is called for short LACPDU) but are not limited only to such message.
The method that the communication link that the embodiment of the present invention provides switches, when the first network element device detects and between the second network element device, the receiver of the first link breaks down, first network element device sends the first message being used for link switching by the first chain road direction second network element device, the second message being used for proper communication is sent by the second chain road direction second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device, shorten or eliminate the time that between network element device, communication link switches, thus reduce the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides a kind of first network element device 4, with reference to shown in Fig. 4, comprising: the first transmitting element 41 and the second transmitting element 42, wherein,
First transmitting element 41, for sending the first message to the second network element device by the transmission link of the first link, this first message is used for notifying that the second network element device carries out link switching.
Wherein, the first link comprises and sends link and receiver, the first message be the first link receiver and send the non-polymeric and nonsynchronous message of link.
Second transmitting element 42, for sending the second message to the second network element device by the transmission link of the second link, this second message is the proper communication message between the first network element device and the second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
Wherein, the second link comprises and sends link and receiver, the second message be the second link receiver and send link aggregation and synchronous message.
Optionally, the first network element device 4, also comprises: detecting unit 43, wherein,
Detecting unit 43, breaks down for the receiver detecting the first link between the first network element device and the second network element device.
The first network element device that the embodiment of the present invention provides, by the first network element device when the receiver fault of the first link occurs, the first message and the second message is sent by the first link and the second chain road direction second network element device, making the second network element device receive the first link occurs fault in time needs by the information of the first link switching to the second link, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides a kind of second network element device 5, with reference to shown in Fig. 5, comprising: the first receiving element 51, second receiving element 52 and link switching unit 53, wherein,
First receiving element 51, receives the first message for the transmission link by the first link, and this first message is used for notifying that described second network element device carries out link switching.
Wherein, the first link comprises and sends link and receiver, the first message be the first link receiver and send the non-polymeric and nonsynchronous message of link.
Second receiving element 52, receives the second message for the transmission link by the second link, and this second message is the proper communication message between the first network element device and the second network element device.
Wherein, the second link comprises and sends link and receiver, the second message be the second link receiver and send link aggregation and synchronous message.
Link switching unit 53, for the packet sending and receiving undertaken by the first link switching to the second link according to the first message and between the first network element device.
The second network element device that the embodiment of the present invention provides, by the second network element device when the receiver fault of the first link occurs, the first message and the second message is received by the first link and the second link, making the second network element device receive the first link occurs fault in time needs by the information of the first link switching to the second link, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides a kind of first network element device 6, with reference to shown in Fig. 6, this equipment can embed or inherently micro-process computer, such as: the portable equipments such as all-purpose computer, customization machine, mobile phone terminal or purl machine, comprise: at least one processor 61, memory 62, communication port 63 and bus 64, this at least one processor 61, memory 62 and communication interface 63 are connected by bus 64 and complete mutual communication.
This bus 64 can be industry standard architecture (IndustryStandardArchitecture, referred to as ISA) bus, peripheral component interconnect (PeripheralComponent, referred to as PCI) bus or extended industry-standard architecture (ExtendedIndustryStandardArchitecture, referred to as EISA) bus etc.This bus 64 can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Fig. 6, but not representing the bus only having a bus or a type.Wherein:
Memory 62 is for stores executable programs code, and this program code comprises computer-managed instruction.Memory 62 may comprise high-speed RAM memory, still may comprise nonvolatile memory (non-volatilememory), such as at least one magnetic disc store.Store in described memory device: operating system, application program, for realizing the program code of the embodiment of the present invention.The processing capacity that described operating system performs for controlling and realize described processing unit.Described application program comprises program code, as Word, email software.
Processor 61 may be a central processing unit (CentralProcessingUnit, referred to as CPU), or specific integrated circuit (ApplicationSpecificIntegratedCircuit, referred to as ASIC), or be configured to the one or more integrated circuits implementing the embodiment of the present invention.
Communication interface 63, is mainly used in realizing the communication between the device in the present embodiment.
Wherein, processor 61, for sending the first message to the second network element device by communication interface 63 through the transmission link of the first link, this first message is used for notifying that the second network element device carries out link switching.
Wherein, the first link comprises and sends link and receiver, the first message be the first link receiver and send the non-polymeric and nonsynchronous message of link.
Processor 61, also for sending the second message to the second network element device by communication interface 63 through the transmission link of the second link, this second message is the proper communication message between the first network element device and the second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device.
Wherein, the second link comprises and sends link and receiver, the second message be the second link receiver and send link aggregation and synchronous message.
Optionally, processor 61, the receiver also for detecting the first link between the first network element device and the second network element device breaks down.
The first network element device that the embodiment of the present invention provides, by the first network element device when the receiver fault of the first link occurs, the first message and the second message is sent by the first link and the second chain road direction second network element device, making the second network element device receive the first link occurs fault in time needs by the information of the first link switching to the second link, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides a kind of second network element device 7, with reference to shown in Fig. 7, this equipment can embed or inherently micro-process computer, such as: the portable equipments such as all-purpose computer, customization machine, mobile phone terminal or purl machine, comprise: at least one processor 71, memory 72, communication port 73 and bus 74, this at least one processor 71, memory 72 and communication interface 73 are connected by bus 74 and complete mutual communication.
This bus 74 can be industry standard architecture (IndustryStandardArchitecture, referred to as ISA) bus, peripheral component interconnect (PeripheralComponent, referred to as PCI) bus or extended industry-standard architecture (ExtendedIndustryStandardArchitecture, referred to as EISA) bus etc.This bus 74 can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Fig. 7, but not representing the bus only having a bus or a type.Wherein:
Memory 72 is for stores executable programs code, and this program code comprises computer-managed instruction.Memory 72 may comprise high-speed RAM memory, still may comprise nonvolatile memory (non-volatilememory), such as at least one magnetic disc store.
Processor 71 may be a central processing unit (CentralProcessingUnit, referred to as CPU), or specific integrated circuit (ApplicationSpecificIntegratedCircuit, referred to as ASIC), or be configured to the one or more integrated circuits implementing the embodiment of the present invention.
Communication interface 73, is mainly used in realizing the communication between the device in the present embodiment.
Wherein, processor 71, for receiving the first message by communication interface 73 through the transmission link of the first link, this first message is used for notifying that the second network element device carries out link switching.
Wherein, the first link comprises and sends link and receiver, the first message be the first link receiver and send the non-polymeric and nonsynchronous message of link.
Processor 71, also for receiving the second message by communication interface 73 through the transmission link of the second link, this second message is the proper communication message between the first network element device and the second network element device.
Wherein, the second link comprises and sends link and receiver, the second message be the second link receiver and send link aggregation and synchronous message.
Processor 71, the packet sending and receiving also for being undertaken by the first link switching to the second link according to the first message and between the first network element device.
The second network element device that the embodiment of the present invention provides, by the second network element device when the receiver fault of the first link occurs, the first message and the second message is received by the first link and the second link, making the second network element device receive the first link occurs fault in time needs by the information of the first link switching to the second link, shorten or eliminate the time that between network element device, communication link switches, thus reducing the probability of the service disconnection between network element device in communication link handoff procedure.
The invention provides a kind of communication system 8, with reference to shown in Fig. 8, comprising: at least two network element devices, linked together by least two links between network element device, wherein, in two network element devices connected:
First network element device 81 is used for notifying that the second network element device 82 carries out link switching for being sent the first message to the second network element device 82, first message by the transmission link of the first link; Also for sending the second message to the second network element device 82 by the transmission link of the second link, second message is the proper communication message between the first network element device 81 and the second network element device 82, so that the second network element device 82 is undertaken and packet sending and receiving between the first network element device 81 by the first link switching to described second link according to the first message.
Second network element device 82 receives the first message for the transmission link by the first link, and the first message is used for notifying that the second network element device 82 carries out link switching; Receive the second message for the transmission link by the second link, the second message is the proper communication message between the first network element device 81 and the second network element device 82; Packet sending and receiving also for being undertaken by the first link switching to the second link according to the first message and between the first network element device 81.
Optionally, the receiver of the first network element device 81 also for detecting the first link between the first network element device 81 and the second network element device 82 breaks down.
Wherein the first link comprises and sends link and receiver, the first message be the first link receiver and send the non-polymeric and nonsynchronous message of link; Second link comprises and sends link and receiver, the second message be the second link receiver and send link aggregation and synchronous message.
Wherein, the concrete structure of each network element device and workflow describe in detail with reference to above-mentioned Apparatus and method for embodiment, repeat no more herein.
The communication system that the embodiment of the present invention provides, when the first network element device detects and between the second network element device, the receiver of the first link breaks down, first network element device sends the first message being used for link switching by the first chain road direction second network element device, the second message being used for proper communication is sent by the second chain road direction second network element device, so that the second network element device to be undertaken by the first link switching to the second link according to the first message and packet sending and receiving between the first network element device, shorten or eliminate the time that between network element device, communication link switches, thus reduce the probability of the service disconnection between network element device in communication link handoff procedure.
The first network element device that the various embodiments described above provide and the second network element device, may be used for the method that correspondence performs embodiment as depicted in figs. 1 and 2, for Fig. 1 and the details described embodiment illustrated in fig. 2, repeats no more herein.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed coupling each other or direct-coupling or communication connection can be indirect coupling by some interfaces, device or unit or communication connection, also can be electric, machinery or other form connect.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of embodiment of the present invention scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, and also can be that the independent physics of unit exists, also can be that two or more unit are in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is in essence in other words to the part that prior art contributes, or all or part of of this technical scheme can embody with the form of software product, 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 all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (15)
1. a method for communication link switching, is characterized in that, comprising:
When the first network element device cannot normally receive from the second network element device the communication message that described second network element device sent by the receiver of the first link, described first network element device sends the first message to described second network element device by the transmission link of described first link, described first message is used for notifying that described second network element device carries out link switching, and described first network element device and described second network element device are the aggregation group network element device based on LACP link aggregate control protocol communication system;
Described first network element device sends the second message to described second network element device by the transmission link of the second link, described second link is the link being in Status of Backups between described first network element device and described second network element device, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
2. method according to claim 1, is characterized in that, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
3. method according to claim 1, is characterized in that, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
4. a method for communication link switching, is characterized in that, comprising:
Second network element device receives the first message of the first network element device transmission by the transmission link of the first link, described first network element device and described second network element device are the aggregation group network element device based on LACP link aggregate control protocol communication system, second link is the link being in Status of Backups between described first network element device and described second network element device, and described first message is used for notifying that described second network element device carries out link switching;
Described second network element device receives the second message by the transmission link of described second link, and described second message is the proper communication message between described first network element device and described second network element device;
Described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
5. method according to claim 4, is characterized in that, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
6. method according to claim 4, is characterized in that, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
7., based on first network element device of LACP link aggregate control protocol communication system, it is characterized in that, comprising:
First transmitting element, for when described first network element device cannot normally receive from the second network element device the communication message that described second network element device sent by the receiver of the first link, the first message to the second network element device is sent by the transmission link of the first link, described first network element device and described second network element device are the described aggregation group network element device based on LACP link aggregate control protocol communication system, and described first message is used for notifying that described second network element device carries out link switching;
Second transmitting element, also for being sent the second message by the transmission link of the second link to described second network element device, described second link is the link being in Status of Backups between described first network element device and described second network element device, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
8. equipment according to claim 7, is characterized in that, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
9. equipment according to claim 7, is characterized in that, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
10., based on second network element device of LACP link aggregate control protocol communication system, it is characterized in that, comprising:
First receiving element, receives the first message for the transmission link by the first link, and described first message is used for notifying that described second network element device carries out link switching;
Second receiving element, also receive the second message for the transmission link by the second link, described second link is the link being in Status of Backups between the first network element device and described second network element device, described second message is the proper communication message between described first network element device and described second network element device, and described first network element device and described second network element device are the described aggregation group network element device based on LACP link aggregate control protocol communication system;
Link switching unit, for being undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
11. equipment according to claim 10, is characterized in that, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
12. equipment according to claim 10, is characterized in that, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
13. 1 kinds of communication systems based on LACP link aggregate control protocol, it is characterized in that, comprise: based on the aggregation group network element device of LACP link aggregate control protocol communication system described at least two, linked together by least two links between described network element device, wherein, in two network element devices connected:
When first network element device is used for cannot normally receiving from the second network element device the communication message that described second network element device sent by the receiver of the first link, send the first message to described second network element device by the transmission link of the first link, described first message is used for notifying that described second network element device carries out link switching; Also for being sent the second message by the transmission link of the second link to described second network element device, described second link is the link being in Status of Backups between described first network element device and described second network element device, described second message is the proper communication message between described first network element device and described second network element device, so that described second network element device is undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message;
Second network element device is used for receiving the first message by the transmission link of the first link, and described first message is used for notifying that described second network element device carries out link switching; Receive the second message for the transmission link by the second link, described second message is the proper communication message between described first network element device and described second network element device; Also for being undertaken and packet sending and receiving between described first network element device by described first link switching to described second link according to described first message.
14. systems according to claim 13, is characterized in that, described first link comprises and sends link and receiver, described first message be described first link receiver and send the non-polymeric and nonsynchronous message of link.
15. systems according to claim 13, is characterized in that, described second link comprises and sends link and receiver, described second message be described second link receiver and send link aggregation and synchronous message.
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| CN103840972B (en) * | 2014-02-20 | 2018-03-20 | 烽火通信科技股份有限公司 | The system and method backed up between packet network link aggregation group |
| CN103905338B (en) * | 2014-04-01 | 2017-03-08 | 中国联合网络通信集团有限公司 | The method and device that a kind of IP backbone merges |
| CN107204888B (en) * | 2016-03-16 | 2020-02-14 | 华为技术有限公司 | Method and device for switching timeout time and communication equipment |
| CN108270589B (en) * | 2016-12-30 | 2021-06-15 | 北京华为数字技术有限公司 | Message processing method and related device |
| CN107749798B (en) * | 2017-09-15 | 2021-04-20 | 通鼎互联信息股份有限公司 | Communication network system, shunt device and method for accessing bidirectional transmission network |
| CN110943998B (en) * | 2019-12-04 | 2022-02-01 | 腾讯科技（深圳）有限公司 | Signal transmission method, device, equipment and medium |
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