CN110099001A - The machinery of consultation of two-way converting parameters of detection time, device and electronic equipment - Google Patents
The machinery of consultation of two-way converting parameters of detection time, device and electronic equipment Download PDFInfo
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- CN110099001A CN110099001A CN201910365813.3A CN201910365813A CN110099001A CN 110099001 A CN110099001 A CN 110099001A CN 201910365813 A CN201910365813 A CN 201910365813A CN 110099001 A CN110099001 A CN 110099001A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/24—Multipath
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
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Abstract
The invention discloses a kind of two-way converting parameters of detection time machinery of consultation, device and electronic equipments, wherein, method includes: when time parameter changes, the first parameter negotiation message is sent, newest local terminal time parameter and corresponding newest time parameter sequence number are carried in the first parameter negotiation message；The first parameter negotiation confirmation message is received, the first parameter negotiation confirmation message carries the local terminal time parameter sequence number of opposite equip. storage；Whether more newest local terminal time parameter sequence number and the local terminal time parameter sequence number received are consistent；Newest local terminal time parameter when consistent, after the variation that comes into force.Since a time parameter time parameter sequence number of every variation does primary record, can accurately judge whether BFD message is expired according to the variation of time parameter sequence number, to guarantee the accuracy that time parameter is negotiated, improve the stability of BFD, save networking cost.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of two-way converting parameters of detection time machinery of consultation, device
And electronic equipment.
Background technique
BFD (Bidirectional Forwarding Detection, two-way converting detection) is a general, standard
Change, the unrelated quick fault testing mechanism unrelated with agreement of medium, for the two-way converting path between detection device.BFD exists
Session is established in two equipment, two equipment can periodically send BFD control message after session establishment, if when detecting
The BFD control message that interior one end does not receive opposite end then thinks that failure has occurred in the two-way converting path.
After BFD session establishment, when two equipment can negotiate to determine the transmission of BFD control message by message interaction
Between be spaced and detection time.Minimum BFD is controlled into packet sending intervals below, minimum BFD controls message receiving time
Interval and detection number are referred to as time parameter, or are properly termed as timer parameter, specifically can be by sending P (Poll, parameter
Negotiate) message is timed device parameter negotiation, terminates to negotiate process after receiving F (Final, parameter negotiation confirmation) message.When
Between often will appear both ends during parameter negotiation and negotiate inconsistent situation.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of two-way converting parameters of detection time machinery of consultation, device and electricity
Sub- equipment, to solve often to will appear both ends during time parameter is negotiated in the prior art and negotiate inconsistent technology to ask
Topic.
According in a first aspect, the embodiment of the invention provides a kind of two-way converting parameters of detection time machinery of consultation,
When time parameter changes, the first parameter negotiation message is sent, is carried most in the first parameter negotiation message
New local terminal time parameter and the corresponding newest time parameter sequence number of newest local terminal time parameter；It is true to receive the first parameter negotiation
Recognize message, the first parameter negotiation confirmation message carries the local terminal time parameter sequence number of opposite equip. storage；More newest local terminal
Whether time parameter sequence number and the local terminal time parameter sequence number received are consistent；When newest time parameter sequence number with receive
Local terminal time parameter sequence number is consistent, the newest local terminal time parameter after the variation that comes into force.
Optionally, inconsistent with the local terminal time parameter sequence number that receives when newest local terminal time parameter sequence number and receive
Local terminal time parameter sequence number it is first, determine that the local terminal time parameter sequence number that receives is corresponding and have expired local terminal time ginseng
Number, abandons the first parameter negotiation confirmation message received.
Optionally, the sequence number that time parameter Serial No. cycle accumulor counts, time parameter sequence number accumulated counts are extremely
When dominant bit, time parameter sequence number adds up then to jump again and become zero；When newest local terminal time parameter sequence number and the sheet received
When end time parameter sequence number is inconsistent and the local terminal time parameter sequence number that receives is first, further includes: judge local terminal time ginseng
Whether number sequence row number is zero and whether newest local terminal time parameter sequence number is dominant bit；Local terminal time parameter Serial No. zero and
Newest local terminal time parameter when newest local terminal time parameter Serial No. dominant bit, after the variation that comes into force.
Optionally, two-way converting parameters of detection time machinery of consultation further include: receive the second parameter negotiation message；Judge
The opposite end time parameter sequence number and locally stored opposite end time parameter sequence number that two parameter negotiation messages carry whether one
It causes；When the opposite end that the opposite end time parameter sequence number received is inconsistent with locally stored opposite end time series number and receives
Between argument sequence number rear, opposite end time parameter and opposite end time parameter sequence that the second parameter negotiation message of storage carries
Number；Send the second parameter negotiation confirmation message, wherein the second parameter negotiation confirmation message carries the opposite end time parameter of storage
Sequence number.
Optionally, when the opposite end time parameter sequence number that receives and locally stored opposite end time series number it is inconsistent and
The opposite end time parameter sequence number received is first, abandons the second parameter negotiation message received.
Optionally, when two-way converting inspection session fails, respectively by local terminal time parameter sequence number and the opposite end received
Time parameter sequence number zero.
According to second aspect, the embodiment of the invention provides a kind of two-way converting parameters of detection time consulting devices, comprising:
Transmission unit carries in the first parameter negotiation message for when time parameter changes, sending the first parameter negotiation message
There are newest local terminal time parameter and the corresponding newest time parameter sequence number of newest local terminal time parameter；Receiving unit is used for
The first parameter negotiation confirmation message is received, the first parameter negotiation confirmation message carries the local terminal time parameter sequence of opposite equip. storage
Row number；Comparing unit, for more newest local terminal time parameter sequence number and the local terminal time parameter sequence number that receives whether one
It causes；Validation unit, it is consistent with the local terminal time parameter sequence number received for working as newest time parameter sequence number, after the variation that comes into force
Newest local terminal time parameter.
According to second aspect, the embodiment of the invention provides a kind of electronic equipment, comprising: memory and processor, storage
Connection is communicated with each other between device and processor, and computer instruction is stored in memory, processor passes through computer instructions,
Thereby executing the two-way detection forwarding detection Timing Negotiation method of above-mentioned first aspect any one.
According to second aspect, the embodiment of the invention provides a kind of computer readable storage mediums, which is characterized in that calculates
Machine readable storage medium storing program for executing is stored with computer instruction, and computer instruction is for keeping computer any thereby executing above-mentioned first aspect
One two-way detection forwarding detection Timing Negotiation method.
The application has the following beneficial effects:
1. the application passes through the corresponding newest time parameter sequence number of newest local terminal time parameter in parameter negotiation message
With the local terminal time parameter sequence number of the opposite equip. storage carried in parameter negotiation confirmation message, parameter negotiation report can be specified
The sequence and corresponding relationship of the transmission of text and parameter negotiation confirmation message avoid parameter negotiation message and parameter negotiation from confirming report
Literary matching error.The case where changing repeatedly for some time parameter, local device can be for the time ginsengs repeatedly changed
Number constructs and sends respectively many kinds of parameters negotiation packet, the every variation equal stored count one of time parameter sequence number of time parameter
Secondary, every kind of parameter negotiation packet carries corresponding time parameter message respectively, and local device can be negotiated based on the parameters received
The local terminal time parameter sequence number for the opposite equip. storage that confirmation message carries, determines that the parameter negotiation confirmation message is replied suitable
Sequence, and the newest parameter negotiation message of local device transmission whether is corresponded to, it also can accurately identify the sheet received
End time parameter sequence number correspondence has expired local terminal time parameter, to guarantee the accuracy that time parameter is negotiated, improves BFD
Stability, save networking cost.
2. when receiving the parameter negotiation message of opposite equip. transmission, by comparing the parameter negotiation of opposite equip. transmission
The order of the opposite end time parameter sequence number of message band and locally stored opposite end time parameter sequence number, if pair received
Hold the opposite end time parameter sequence number that time parameter sequence number is inconsistent with locally stored opposite end time series number and receives
In rear, that is, the no random ordering of the parameter negotiation message received, received sequence is correctly pair that storage parameter negotiation message carries
Hold time parameter and opposite end time parameter sequence number, the parameter negotiation message acknowledged receipt of effective.When by the opposite end that receives
Between argument sequence number can accurately be acknowledged receipt of compared with locally stored opposite end time series number parameter association
Business's text, to guarantee the accuracy that time parameter is negotiated, improves the stability of BFD, saving group with the presence or absence of out-of-order situation
Net cost.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 a shows P Message processing random ordering situation schematic diagram in the prior art；
Fig. 1 b shows P Message processing situation schematic diagram not in time in the prior art；
Fig. 2 shows the flow charts of the two-way converting parameters of detection time machinery of consultation of the embodiment of the present invention；
The BFD control message that Fig. 3 a shows the embodiment of the present invention forces part field format schematic diagram；
Fig. 3 b shows the BFD control message authentication part field format schematic diagram of the embodiment of the present invention
Fig. 4 shows equipment room BFD session diagram of the embodiment of the present invention；
Fig. 5 shows the flow chart of another two-way converting parameters of detection time machinery of consultation of the embodiment of the present invention；
Fig. 6 shows another equipment room BFD session diagram of the embodiment of the present invention；
Fig. 7 shows the schematic diagram of the two-way converting parameters of detection time consulting device of the embodiment of the present invention；
The two-way converting parameters of detection time that Fig. 8 shows the embodiment of the present invention negotiates interaction flow schematic diagram；
Fig. 9 shows the hardware structural diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Hereinafter, simply being introduced BFD agreement first.
BFD establishes session using the mechanism of three-way handshaking, and sender can be in message when sending BFD control message
Local current session status, Sta field and local of the recipient according to the BFD control message received are inserted in Sta field
Current sessions state carries out the migration of state machine, establishes session.P message and the second device replied F message are sent with the first equipment
For, BFD session establishment process is as follows:
1) after the BFD of the first equipment and the second equipment receives the notice of upper layer application, sending state to opposite end respectively is
The BFD of Down controls message.
2) after the BFD that the second equipment receives that opposite end state is Down controls message, local session state is moved to by Down
Init then sends the BFD that state is Init and controls message.The BFD state change of first equipment is the same as the second equipment.
3) after the BFD that the first equipment receives that opposite end state is Init controls message, local session state is moved to by Init
Up then sends the BFD that state is Up and controls message.The BFD state change of second equipment is the same as the first equipment.
4) BFD both sides' state is all Up, and session is successfully established and starts to detect link state.
In the BFD session valid period, timer parameter can negotiate modification without influencing session status at any time.BFD session
The timer negotiation of two-end device independently carry out, timer time can be different.
It is that the minimum BFD that the first equipment is supported controls packet sending intervals (that BFD, which controls packet sending intervals,
One equipment Desired Min TX Interval) the minimum BFD control message receiving time interval (the supported with the second equipment
Two equipment Required Min RX Interval) among maximum value, that is to say, that the equipment of slow one end determines
Send frequency.
However, negotiate process in, the corresponding relationship of P message and F message be it is fuzzy, such as the second equipment receive P report
Text sends F message according to the principle for receiving message one message of reply.Before the first equipment receives F message, meeting one
Straight row sends P message, until receiving the F message of the second device replied.Its frequency of giving out a contract for a project is the frequency of giving out a contract for a project currently to come into force
Rate.In practical applications there may be P Message processing is out-of-order or P Message processing not in time the case where, cause P message source to have
The F message that may be received not is to cause to negotiate wrong to the response of current newest P message.
For example, the situation of P Message processing random ordering as shown in Figure 1a, it is assumed that the first equipment will reduce the transmission of local terminal
Time interval has sent the first P message P1 to the second equipment.First equipment increases the transmission time interval of local terminal again, in
It is to have sent second of P message P2 to the second equipment again.Second of P message P2 is reached prior to the first P message P1, and second sets
After receiving second of P message P2, the packet receiving time come into force is increased, then the first P message P1 is received again, will test therewith
Time reduces, and after the first equipment side receives the F message of the second equipment transmission, the first equipment thinks that the second equipment has known this
The case where end transmission time interval becomes larger, then tunes up transmission time interval, and in fact, the second equipment still uses at this time
Lesser detection time.In this way it is possible to which the second equipment is caused to lead to time parameter negotiation error since detection time is too small
Time-out.
In addition, a kind of may cause the case where negotiating wrong situation P Message processing as shown in Figure 1 b not in time, it is assumed that the
One equipment will reduce the transmission time interval of local terminal, have sent the first P message P1 to the second equipment.Second equipment receives first
The first F message F1 can be sent after kind P message P1, if the first equipment handles the first F message F1, first is set
It is standby to increase the transmission time interval of local terminal again, then second of P message P2 is had sent to the second equipment again.First equipment
Time parameter (detection time) directly increases, if the second equipment has delay, or processing to second of P message P2 Message processing
Overlong time, the time of consumption are more than the transmission time interval of the first equipment after increasing, and may cause the first equipment time-out.Invention
The reason of people's discovery, time parameter negotiation error is that expired message can not be identified in message transmission process, leads to time parameter
There is mistake in negotiation.For the correctness for guaranteeing the negotiation of BFD time parameter, needs to guarantee that P Message processing cannot be out-of-order, need simultaneously
Guarantee that P message needs to be completed by quickly processing timely in real time, however, the configuration of BFD send and receive packets time parameter is smaller, for example is made into
3ms or 1ms, above-mentioned two o'clock more cannot be guaranteed.BFD agreement is in a network mainly for detection of failure, after reporting fault, if
It reports by mistake, large-scale service switching can be triggered, it is huge to systematic influence.
Therefore, the invention proposes a kind of two-way converting parameters of detection time machineries of consultation, in embodiment, machinery of consultation
It is carried out between two equipment of BFD session, the executable this method of any equipment in the present embodiment can be with two
It is illustrated for platform equipment, specifically, the machinery of consultation can be used for the enabled device of two-way converting detection, i.e. time parameter
Actively changed equipment specifically may refer to two-way converting parameters of detection time machinery of consultation shown in Fig. 2, this method
May include:
S11. when time parameter changes, the first parameter negotiation message is sent, is carried in the first parameter negotiation message
There are newest local terminal time parameter and the corresponding newest time parameter sequence number of newest local terminal time parameter.In the present embodiment,
BFD control message format may refer to shown in Fig. 3 a and Fig. 3 b, wherein Fig. 3 a shows the pressure partial words of BFD control message
Section, Fig. 3 b show the optional authentication part field of BFD control message, only introduce part related with the application field here
Meaning:
Diag: the reason of diagnosing code, showing sender the last time session Down.
Sta (State): sender's BFD session current state, value are as follows: 0 represents AdminDown, and 1 represents Down, 2 generations
Table I nit, 3 represent Up.
P (Poll): being set as 1, indicates that sender's request is attached confirmation, or send required parameter and change really
Recognize；It is set as 0, indicates sender's not request confirmation.
F (Final): being set as 1, indicates that sender responds one and receives the BFD control message that P bit is 1；It is set as
0, indicate that sender is not responding to one and receives the BFD control message that P bit is 1.
My Discriminator: the unique non-zero value that sender generates, for identifying different BFD sessions.
Your Discriminator: the value is to receive if the BFD control message for having received session neighbours transmission
Otherwise My Discriminator in message is 0.
The field meanings of the authentication section shown in Fig. 3 b:
Auth Type: auth type.
Auth Len: optional authentication partial-length, including Auth Type and Auth Len field.
In the present embodiment, time parameter sequence number can be addition in parameter negotiation message, i.e., enabled device is being sent out
The P message sent when raw time parameter variation, in the present embodiment, time parameter sequence number can be the field of 16 bytes
Sequence, for example, the local terminal time parameter sequence number carried in parameter negotiation message in the present embodiment can be My
Sequence.The number of My Sequence record local terminal active transformation period parameter.Specifically, if forcing part field
Sequence is added, may cause the BFD message for being unable to compatibility standard.Therefore, in the present embodiment, using sequence as recognizing
Message is demonstrate,proved, increases Auth Type type, storage time argument sequence sequence newly.Primary parameter occurs in enabled device to become
After change, the time parameter sequence number My Sequence of local terminal is increased 1.It is when P message is sent, newest local terminal time parameter is corresponding
Newest time parameter sequence number My SequenceA fill out in P message, send together.In the present embodiment, when equipment room
After BFD session is deleted or session status becomes DOWN, the time parameter sequence number of local terminal and the time for the opposite end searched out are deleted
Argument sequence number guarantees the correctness of sequence number after next session establishment.
S12. the first parameter negotiation confirmation message is received, when the first parameter negotiation message carries the local terminal of opposite equip. storage
Between argument sequence number.In the present embodiment, the first parameter negotiation confirmation message is the ginseng that opposite equip. is directed to that local device is sent
The negotiation confirmation that number negotiation packet, that is, P message is replied as a result, be properly termed as F message, in opposite equip. reply in the present embodiment
F message in, carry local terminal time parameter sequence number Your Sequence specifically, after opposite equip. receives P message,
If P message is not expired message, just the My Sequence in P message is updated into opposite equip., opposite equip. passes through
Your Sequence records local terminal time parameter sequence number, when going back F message, when carrying newest local terminal in opposite equip.
Between argument sequence Your Sequence B.
S13. whether more newest local terminal time parameter sequence number and the local terminal time parameter sequence number received are consistent, BFD
Session would generally be held consultation parameter by sending P message, terminate to negotiate process after receiving F message.But negotiating process at present
In, the corresponding relationship of P message and F message is fuzzy, it is possible to which the F message received is not to current newest P message
Response causes to negotiate wrong.Therefore, in order to ensure the first parameter negotiation confirmation message received be send carry newest
Hold the first parameter negotiation of time parameter message response, need more newest local terminal time parameter sequence number with receive local terminal when
Between argument sequence number it is whether consistent.When newest time parameter sequence number is consistent with the local terminal time parameter sequence number received, enter
Step S14, when the local terminal that newest local terminal time parameter sequence number is inconsistent with the local terminal time parameter sequence number that receives and receives
Time parameter sequence number is first, then it represents that the first parameter negotiation confirmation message received is hair when former time parameter changes
The response of the parameter negotiation message sent, enters step S15.
S14. the newest local terminal time parameter to come into force after changing.
S15. it determines that the local terminal time parameter sequence number received correspondence has expired local terminal time parameter, abandons the received
One parameter negotiation confirmation message.
The application can specify the hair of P message and F message by carrying time parameter sequence number in P message and F message
The sequence and corresponding relationship sent avoid P message and F message matching mistake.For example, changing repeatedly for some time parameter
The case where, local device can construct and send respectively a variety of P messages, the every change of time parameter for the time parameter repeatedly changed
Change that an equal stored count of time parameter sequence number is primary, and every kind of P message carries corresponding time parameter message respectively, first sets
It is standby to determine what the F message was replied according to the local terminal time parameter sequence number for the opposite equip. storage that the F message received carries
Sequentially and which kind of corresponding P message, expired message also can be accurately identified, to guarantee what time parameter was negotiated
Accuracy improves the stability of BFD, saves networking cost.
Specifically, the BFD session that can be established with the first equipment shown in Fig. 4 and the second equipment, pair present embodiment ensure that
The accuracy that time parameter is negotiated is illustrated, and is opened as shown in figure 4, can establish BFD session with the first equipment and the second equipment
It is illustrated for beginning, after the variation of the first equipment first time time parameter, the newest time parameter sequence number My of the first equipment
Sequence A becomes 1.The information carried in the first P message P1 message are as follows: My Sequence A=1；First equipment second
After secondary time parameter variation, the newest time parameter sequence number My Sequence A of the first equipment becomes 2.Second of P message P2
The information carried in message are as follows: My Sequence A=2；After second equipment receives the first P message P1 message, first is replied
F message F1 is planted, the information carried in message: the first equipment time parameter sequence number Your of the second equipment storage
Sequence B=1；After second equipment receives second of P message P2 message, second of F message F2 message is replied, message is taken
The information of band: the first equipment time parameter sequence number Sequence B=2 of the second equipment of Your storage；First equipment receives
A kind of F message F1, discovery Your Sequence B are less than My Sequence A.Message will be ignored, not triggered time parameter
Variation.After the first equipment receives second of F message F2, it is found that its Your Sequence B is equal to My Sequence B.
Come into force variation after second variation after time parameter.It can be to avoid so P Message processing leads to timeout issue not in time
It will be avoided by.
As optional embodiment, since the field of time parameter sequence number preset length is counted, using circulation
When the mode of accumulated counts, i.e. time argument sequence accumulated counts to dominant bit, when time parameter sequence number adds up again then
Jump is initial value, for example, time parameter sequence number is the field of 16 byte lengths, after counting reaches 2 16 powers, is jumped
Become initial value 0, for example, when newest local terminal time parameter sequence number and the inconsistent local terminal time parameter sequence number received,
Newest local terminal time parameter is 0 and the local terminal time parameter sequence number maximum sequence number that receives, then it is assumed that the local terminal time received
Argument sequence number is first；When receiving opposite end time parameter Serial No. zero, the opposite end time parameter Serial No. being locally stored is most
Big value, then it is assumed that the opposite end time series number being locally stored is first.
In the present embodiment, the machinery of consultation of two-way converting parameters of detection time can also receive parameter negotiation message, due to
Opposite equip. occur multiple time parameter variation when, multiple parameters negotiation packet can be sent, when after transmission time parameter
Negotiation packet first reaches local device with the parameter negotiation message sent online, and local device receives posterior parameter negotiation report
Wen Hou is confirmed, time parameter is changed, and rear have received again formerly sends parameter negotiation message, be further continued for being confirmed, change
The time parameter that opposite equip. is formerly sent, then the time parameter that will lead to local device is not newest time parameter, is caused
Time parameter negotiation error.For this purpose, when receiving parameter negotiation message, as shown in figure 5, two-way converting parameters of detection time is negotiated
Method can also include the following steps:
S21. the second parameter negotiation message is received.Second parameter negotiation message carries opposite end time parameter sequence number.
When S22. judging the opposite end time parameter sequence number of the second parameter negotiation message carrying with locally stored opposite end
Between argument sequence number it is whether consistent.In the present embodiment, opposite equip. occur multiple time parameter variation when, it is every occur one time when
Between Parameters variation, primary parameter negotiation packet can be sent, if opposite equip. send parameter negotiation message formerly send it is slow
In rear transmission parameter negotiation message reach local device, the parameter negotiation message formerly sent when reaching local device,
The parameter negotiation message in rear transmission that the opposite end time parameter sequence number and local terminal one that parameter negotiation message carries store carries
Opposite end time parameter sequence number it is inconsistent, therefore, when receiving the second parameter negotiation message, need to compare receive parameter association
The opposite end time parameter sequence that the opposite end time parameter sequence number that Business's text carries is carried with the parameter negotiation message received before
It is number whether consistent, when the opposite end time parameter sequence number received is inconsistent with locally stored opposite end time series number and receives
Opposite end time parameter sequence number rear, then may indicate that the sequence of the second parameter negotiation message received is sent with opposite end
The sequence of two parameter negotiation messages is identical, and there is no out-of-order situations, enters step S23.When the opposite end time parameter sequence received
Row number is inconsistent with locally stored opposite end time series number and the opposite end time parameter sequence number that receives is first, then it is assumed that receives
The opposite end time parameter sequence number arrived is out of date, then enters step S24.
S23. the opposite end time parameter and opposite end time parameter sequence number of the carrying of the second parameter negotiation message are stored.
S24. the second parameter negotiation message received is abandoned
S25. the second parameter negotiation confirmation message is sent.In the opposite end time parameter for storing the carrying of the second parameter negotiation message
And after the time parameter sequence number of opposite end, it will confirm that the confirmation result of renewal time parameter with the second parameter negotiation confirmation message
It is sent to opposite equip..Wherein, the second parameter negotiation confirmation message carries the opposite end time parameter sequence number of storage.
Specifically, can be by taking the BFD session that the first equipment shown in fig. 6 and the second equipment are established as an example, to the present embodiment
The accuracy for guaranteeing that time parameter is negotiated is illustrated, as shown in fig. 6, in the present embodiment, the second equipment executes step S21-
S25.After the variation of first equipment first time time parameter, the My Sequence A of the first equipment becomes 1.The first P message P1 report
The information carried in text are as follows: My Sequence A=1；After the variation of first second of equipment time parameter, the My of the first equipment
Sequence A becomes 2.The information carried in second of P message P2 message are as follows: My Sequence A=2；Second equipment because
Second of P message P2 message is first received, the Your Sequence B of the second equipment becomes 2, while renewal time parameter.Below
When receiving the first P message P1 message, because its My Sequence A of the first equipment of discovery is less than the second equipment local Your
Sequence B.This message will be ignored.So P packet out-ordering will not go wrong.
The embodiment of the invention also provides a kind of two-way converting parameters of detection time consulting devices, as shown in fig. 7, negotiating dress
Setting includes: transmission unit 10, for sending the first parameter negotiation message, the first parameter negotiation when time parameter changes
Newest local terminal time parameter and the corresponding newest time parameter sequence number of newest local terminal time parameter are carried in message；It receives
Unit 20, for receiving the first parameter negotiation confirmation message, the first parameter negotiation confirmation message carries the sheet of opposite equip. storage
Hold time parameter sequence number；Comparing unit 30 is joined for more newest local terminal time parameter sequence number with the local terminal time received
Whether number sequence row number is consistent；Validation unit 40, for when newest time parameter sequence number and the local terminal time parameter sequence received
Number consistent, the newest local terminal time parameter after the variation that comes into force.
In order to more preferably illustrate that above-mentioned two-way detection forwarding detection Timing Negotiation method in the present embodiment can be with two
The interactive system of equipment composition is specifically described, and in the present embodiment, interactive system may include establish BFD session the
One equipment and the second equipment, specifically, the first equipment can for two-way converting detection enabled device, the first equipment can when
Between parameter when changing, send P message, the second equipment can be the equipment that is enabled of two-way converting detection, receive P message
When to the first device replied F message.Specific interaction flow may refer to system interaction figure shown in Fig. 8.
The embodiment of the invention provides a kind of electronic equipment, which can be located at the first equipment and/or second
Equipment specifically may refer to Fig. 9, which may include processor 11 and memory 12, wherein processor 11 and deposit
Reservoir 12 can be connected by bus or other modes, in Fig. 9 for being connected by bus.
Processor 11 can be central processing unit (Central Processing Unit, CPU).Processor 11 can be with
For other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.
Memory 12 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, such as management, use or the construction method of the container mirror image in the embodiment of the present invention
Corresponding program instruction/module.Processor 11 by operation storage non-transient software program in memory 12, instruction with
And module, it is thereby executing the various function application and data processing of processor, i.e., two-way in realization above method embodiment
Detection forwarding detection Timing Negotiation method.
Memory 12 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；It storage data area can the data etc. that are created of storage processor 11.In addition, storage
Device 12 may include high-speed random access memory, can also include non-transient memory, for example, at least a magnetic disk storage
Part, flush memory device or other non-transient solid-state memories.In some embodiments, it includes relative to place that memory 12 is optional
The remotely located memory of device 11 is managed, these remote memories can pass through network connection to processor 11.The reality of above-mentioned network
Example includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
One or more module stores in memory 12, when being executed by processor 11, executes the above method and implements
Two-way detection forwarding detection Timing Negotiation method in example.
It is that can lead to it will be understood by those skilled in the art that realizing all or part of the process in above-described embodiment method
Computer program is crossed to instruct relevant hardware and complete, program can be stored in a computer-readable storage medium, the journey
Sequence is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, storage medium can be read-only memory
(Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), flash memory
(Flash Memory), hard disk (Hard Disk Drive, abbreviation: HDD) or solid state hard disk (Solid-State Drive,
SSD) etc..
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (9)
1. a kind of two-way converting parameters of detection time machinery of consultation characterized by comprising
When time parameter changes, the first parameter negotiation message is sent, is carried most in the first parameter negotiation message
New local terminal time parameter and the corresponding newest time parameter sequence number of the newest local terminal time parameter；
The first parameter negotiation confirmation message is received, when the first parameter negotiation confirmation message carries the local terminal of opposite equip. storage
Between argument sequence number；
Whether compare the newest local terminal time parameter sequence number consistent with the local terminal time parameter sequence number that receives；
When the newest time parameter sequence number is consistent with the local terminal time parameter sequence number received, newest after the variation that comes into force
Hold time parameter.
2. two-way converting parameters of detection time machinery of consultation as described in claim 1, which is characterized in that when the newest local terminal
Time parameter sequence number is inconsistent with the local terminal time parameter sequence number received and the local terminal time parameter sequence number that receives is first,
It determines that the local terminal time parameter sequence number received correspondence has expired local terminal time parameter, abandons first parameter association received
Quotient's confirmation message.
3. two-way hair parameters of detection time machinery of consultation as claimed in claim 2, which is characterized in that the time parameter sequence
Number sequence number counted for cycle accumulor, when the time parameter sequence number accumulated counts to dominant bit, the time parameter sequence
Row number adds up then to jump again and become zero；
When the local terminal that the newest local terminal time parameter sequence number is inconsistent with the local terminal time parameter sequence number that receives and receives
When time parameter sequence number is first, further includes:
Judge whether the local terminal time parameter sequence number is zero and whether newest local terminal time parameter sequence number is dominant bit；
When the local terminal time parameter Serial No. zero and newest local terminal time parameter Serial No. dominant bit, after the variation that comes into force
Newest local terminal time parameter.
4. two-way converting parameters of detection time machinery of consultation as described in claim 1, which is characterized in that the method also includes
Receive the second parameter negotiation message；
Judge the opposite end time parameter sequence number and locally stored opposite end time ginseng that the second parameter negotiation message carries
Whether number sequence row number is consistent；
When the opposite end that the opposite end time parameter sequence number received is inconsistent with locally stored opposite end time series number and receives
Time parameter sequence number is in opposite end time parameter and opposite end time parameter rear, that storage the second parameter negotiation message carries
Sequence number；
Send the second parameter negotiation confirmation message, wherein the second parameter negotiation confirmation message carries the described right of storage
Hold time parameter sequence number.
5. two-way converting parameters of detection time machinery of consultation as claimed in claim 4, which is characterized in that
When the opposite end that the opposite end time parameter sequence number received is inconsistent with locally stored opposite end time series number and receives
Time parameter sequence number is first, abandons the second parameter negotiation message received.
6. two-way converting parameters of detection time machinery of consultation as described in claim 1, which is characterized in that
When two-way converting inspection session failure, respectively by local terminal time parameter sequence number and the opposite end time parameter sequence received
Number zero.
7. a kind of two-way converting parameters of detection time consulting device characterized by comprising
Transmission unit, for sending the first parameter negotiation message, the first parameter negotiation report when time parameter changes
Newest local terminal time parameter and the corresponding newest time parameter sequence number of the newest local terminal time parameter are carried in text；
Receiving unit, for receiving the first parameter negotiation confirmation message, the first parameter negotiation confirmation message carries opposite end and sets
The local terminal time parameter sequence number of standby storage；
Comparing unit, for the newest local terminal time parameter sequence number and the local terminal time parameter sequence number that receives whether
Unanimously；
Validation unit, it is consistent with the local terminal time parameter sequence number received for working as the newest time parameter sequence number, it comes into force
Newest local terminal time parameter after variation.
8. a kind of electronic equipment characterized by comprising memory and processor, between the memory and the processor
Connection is communicated with each other, computer instruction is stored in the memory, the processor, which passes through, executes the computer instruction, from
And perform claim requires two-way detection forwarding detection Timing Negotiation method described in 1-6 any one.
9. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, the computer instruction is for turning the computer thereby executing two-way detection as claimed in any one of claims 1 to 6
Hair detection Timing Negotiation method.
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