CN106301840A - The sending method of two-way converting detection BFD message and device - Google Patents
The sending method of two-way converting detection BFD message and device Download PDFInfo
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- CN106301840A CN106301840A CN201510280107.0A CN201510280107A CN106301840A CN 106301840 A CN106301840 A CN 106301840A CN 201510280107 A CN201510280107 A CN 201510280107A CN 106301840 A CN106301840 A CN 106301840A
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- admindown
- intervalometer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
Abstract
The invention provides sending method and the device of a kind of two-way converting detection BFD message, wherein, the method includes: when two-way converting detection BFD session establishment, the line card in distributed system parses the type of the BFD message received；The intervalometer that cable fastener activating is corresponding with type；At timer expiry, the BFD message that line card master control transmission in distributed system is corresponding with intervalometer.By the present invention, solve the process of BFD message in correlation technique and be susceptible to the problem by mistake processed, filled up the blank of correlation technique.
Description
Technical field
The present invention relates to the communications field, in particular to the transmission of a kind of two-way converting detection BFD message
Method and device.
Background technology
Two-way converting detection (Bidirectional Forwarding Detection is referred to as BFD) agreement provides
One the quick fault testing mechanism that general standardized medium is unrelated and agreement is unrelated.
BFD sets up session on two network equipments, is used for detecting the two-way converting path of LA Management Room,
For upper layer application service.BFD itself does not has neighbor discovery mechanisms, but the upper layer application by being serviced is led to
Know that its neighbor information is to set up session.Detection messages can be the most quickly sent after session establishment, if
Do not receive BFD message in the detection time, then it is assumed that this two-way converting path there occurs fault, notify bedding and clothing
The upper layer application of business processes accordingly.
When BFD normally works, the state of session is UP, and expression link is steady statue.BFD session exists
During UP state, detection messages can be sent according to the interval of configuration.Whenever both devices receives BFD detection messages
Time, detection time timer will be reset, keep session UP state.If do not received within the detection time
BFD detection messages, then it is assumed that link may have occurred fault, BFD session can move to DOWN state.
BFD needs to configure on two equipment, it is assumed that it is the most normal that two equipment is respectively A and B, BFD
Keep UP state.When user deletes session operation on B device, following two events can occur simultaneously:
1, B device stops sending detection messages at once；
2, B device is when deleting session, can send a state value to A equipment and be set to
The BFD of ADMINDOWN controls message.This message is protocol massages, it is therefore an objective to notice A equipment is deleted
Session；After A equipment receives this message, can directly BFD session be deleted.
The detection time assuming A and B device BFD is t1, and during owing to deleting, B device stops sending at once
Detection messages, if A equipment does not receives the detection messages that B sends within the t1 time, then the BFD of A equipment is just
Inspection declaration can survey DOWN.Meanwhile, B device sends ADMINDOWN protocol massages and arrives A, A
Equipment receives this message to carry out processing and time of being deleted by this BFD is t2.If t1 > t2,
ADMINDOWN has first processed, then session can normally be deleted, no problem；If t1 < t2, then BFD
Will be considered that it is detection DOWN, it is believed that this link breaks down, when BFD is associated with business, can be fast by flow
Speed is switched to backup link.Therefore, when deleting far-end session, if processed the most rapidly
This message of ADMINDOWN, improves treatment effeciency, in the case of link fault-free, can cause
Main/slave link is cut by mistake.
In distributed structure/architecture, equipment is divided into master control and line card, and Fig. 1 is master control and line card in correlation technique
The schematic diagram of BFD session, as it is shown in figure 1, protocol stack is all built in master control, master control be also responsible for all online
The management of line card；And line card is responsible for receiving and sending message.Line card receives message from port, and resolver resolves
After protocol massages, being required to give master control and process, BFD keep-alive message then gives BFD timer processing.
In the case of network configuration is relatively more, master control is frequently encountered the situation that CPU is busy, is often processing
The higher agreement of other priority, or the management of other line cards, tend not to BFD protocol massages in real time
Process, it is impossible to notice line card deletes BFD session in time.If can not timely respond to BFD's
ADMINDOWN message and delete session, exceed detection week after date can produce BFD inspection declaration survey DOWN,
Then can cause cutting by mistake.This situation often occurs on the exigent network of network reliability, and BFD examines
Survey period assignment the most comparatively short, be then more prone to this situation.
Therefore, in correlation technique on send master control to process this mode when processing BFD message, it is impossible to ensure and
Time correctly process corresponding BFD message, be susceptible to cut by mistake.For the problems referred to above in correlation technique, at present
Effective solution is not yet proposed.
Summary of the invention
Present invention is primarily targeted at sending method and the device that a kind of two-way converting detection BFD message is provided,
The problem being susceptible to by mistake process with the process at least solved in correlation technique for BFD message.
According to an aspect of the invention, it is provided the sending method of a kind of two-way converting detection BFD message,
Including: when two-way converting detection BFD session establishment, line card in distributed system parses and receives
The type of BFD message；The intervalometer that described cable fastener activating is corresponding with described type；Surpass at described intervalometer
Time, the master control in distributed system of the described line card sends the BFD message corresponding with described intervalometer.
Further, described BFD type of message includes: for deleting the ADMINDOWN of BFD session
Message and other messages in addition to ADMINDOWN message.
Further, when described message is described ADMINDOWN message, described cable fastener activating and institute
State and type is specified the intervalometer that message is corresponding include: described cable fastener activating is reported with described ADMINDOWN
The first timer that literary composition is corresponding, wherein, the timing of described first timer is less than and removes
The timing of the second timer that other messages beyond ADMINDOWN message are corresponding.
Further, send corresponding with described intervalometer in the master control in distributed system of the described line card
Before BFD message, described method also includes: shield described second timer.
Further, at described timer expiry, the master control in distributed system of the described line card sends and institute
The BFD message stating intervalometer corresponding includes: in described first timer time-out, described line card is to described distribution
Master control in formula system sends described ADMINDOWN message.
According to another aspect of the present invention, it is provided that the dispensing device of a kind of two-way converting detection BFD message,
The line card being positioned in distributed system is surveyed, including: parsing module, for detecting BFD session at two-way converting
When setting up, parse the type of the BFD message received；Active module, for activating and described type phase
Corresponding intervalometer；Sending module, at described timer expiry, the master control in distributed system is sent out
Send the BFD message corresponding with described intervalometer.
Further, described BFD type of message includes: for deleting the ADMINDOWN of BFD session
Message and other messages in addition to ADMINDOWN message.
Further, when described message is described ADMINDOWN message；Described active module, also
For activating the first timer corresponding with described ADMINDOWN message, wherein, described first timing
The timing of device is less than the second timer corresponding with other messages in addition to ADMINDOWN message
Timing.
Further, send corresponding with described intervalometer in the master control in distributed system of the described line card
Before BFD message, described device also includes: shroud module, is used for shielding described second timer.
Further, described sending module, it is additionally operable in described first timer time-out, described line card is to institute
State the master control in distributed system and send described ADMINDOWN message.
In the present invention, use when two-way converting detection BFD session establishment, according in distributed system
Line card parses the type of the BFD message received, and activates the intervalometer corresponding with type of message, in phase
During the timer expiry answered, the BFD message that line card master control transmission in distributed system is corresponding with intervalometer
Mode, solve the process of BFD message in correlation technique and be susceptible to the problem by mistake processed, filled up phase
The blank of pass technology.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application,
The schematic description and description of the present invention is used for explaining the present invention, is not intended that the improper limit to the present invention
Fixed.In the accompanying drawings:
Fig. 1 is master control and the schematic diagram of line card BFD session in correlation technique；
Fig. 2 is the flow chart of the sending method of two-way converting detection BFD message according to embodiments of the present invention；
Fig. 3 is the structured flowchart of the dispensing device of two-way converting detection BFD message according to embodiments of the present invention；
Fig. 4 is the optional structure of the dispensing device of two-way converting detection BFD message according to embodiments of the present invention
Block diagram one；
Fig. 5 is to report DOWN by mistake and cause cutting by mistake during the improvement BFD deletion according to alternative embodiment of the present invention
System framework figure；
Fig. 6 is to report DOWN by mistake and cause blanking method by mistake during improvement BFD deletion according to embodiments of the present invention
Flow chart.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment
Can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Present embodiments providing the sending method of a kind of two-way converting detection BFD message, Fig. 2 is according to this
The flow chart of the sending method of the two-way converting detection BFD message of bright embodiment, as in figure 2 it is shown, the method
Step include:
Step S202: when two-way converting detection BFD session establishment, the line card in distributed system parses
The type of the BFD message received；
Step S204: the intervalometer that cable fastener activating is corresponding with type；
Step S206: at timer expiry, line card master control transmission in distributed system is corresponding with intervalometer
BFD message.
By step S202 in the present embodiment to step S206, use and detect BFD session at two-way converting
When setting up, parse the type of the BFD message received according to the line card in distributed system, activate and report
The intervalometer that literary composition type is corresponding, when corresponding timer expiry, line card master control in distributed system is sent out
Send the mode of the BFD message corresponding with intervalometer, solve the process of BFD message in correlation technique and easily send out
The raw problem by mistake processed, has filled up the blank of correlation technique.
For the present embodiment relates to BFD type of message may include that for deleting BFD session
ADMINDOWN message and other messages in addition to ADMINDOWN message.
And when message is ADMINDOWN message, the cable fastener activating in the present embodiment step S204 and class
Type is specified the mode of the intervalometer that message is corresponding, can pass through in an optional embodiment of the present embodiment
Following manner realizes: the first timer that cable fastener activating is corresponding with ADMINDOWN message, wherein, the
The timing of one intervalometer is less than corresponding with other messages in addition to ADMINDOWN message second
The timing of intervalometer.
During it is to say, have ADMINDOWN message in BFD message, activate and this ADMINDOWN
The first timer that message is corresponding, owing to the timing of this first timer is reported less than except ADMINDOWN
The timing of the second timer that other messages beyond literary composition are corresponding so that can process in time
ADMINDOWN message, and notify that this BFD session is deleted in master control.
In order to process ADMINDOWN message the most in time, another optional embodiment party of the present embodiment
In formula, before the BFD message that line card master control transmission in distributed system is corresponding with intervalometer, this reality
The method executing example can also include: shielding second timer.In this way it is prevented that second timer time-out,
More ensure that and can process ADMINDOWN message in time.
Alternatively, in middle step S206 of the present embodiment, at timer expiry, line card is to distributed
The mode of the BFD message that master control transmission in system is corresponding with intervalometer, can realize in the following way
Including: in first timer time-out, line card master control in distributed system sends ADMINDOWN message.
Additionally providing the dispensing device of a kind of two-way converting detection BFD message in the present embodiment, this device is used
In realizing above-described embodiment and optional embodiment, carried out repeating no more of explanation.Use as following
, term " module " can realize the software of predetermined function and/or the combination of hardware.Although following example
Described device preferably realizes with software, but hardware, or the realization of the combination of software and hardware is also
May and be contemplated.
Fig. 3 is the structured flowchart of the dispensing device of two-way converting detection BFD message according to embodiments of the present invention,
As it is shown on figure 3, the line card that this device is positioned in distributed system is surveyed, this device includes: parsing module 32,
For parsing the type of the two-way converting detection BFD message received；Active module 34, with parsing module
32 are of coupled connections, for activating the intervalometer corresponding with type；Sending module 36, with active module 34
It is of coupled connections, at timer expiry, the BFD that master control transmission in distributed system is corresponding with intervalometer
Message.
Alternatively, BFD message includes: for deleting the ADMINDOWN message of BFD session and removing
Other messages beyond ADMINDOWN message.
Alternatively, when message is ADMINDOWN message, this active module 34, be additionally operable to activate with
The first timer that ADMINDOWN message is corresponding, wherein, the timing of first timer is less than and removes
The timing of the second timer that other messages beyond ADMINDOWN message are corresponding.
Alternatively, this sending module 36, it is additionally operable in first timer time-out, line card is in distributed system
Master control send ADMINDOWN message.
Fig. 4 is the optional structure of the dispensing device of two-way converting detection BFD message according to embodiments of the present invention
Block diagram one, as shown in Figure 4, at the BFD that line card master control transmission in distributed system is corresponding with intervalometer
Before message, this device also includes: shroud module 42, is of coupled connections with sending module 36, for shielding
Two intervalometers.
The present invention is illustrated by the alternative embodiment below in conjunction with the embodiment of the present invention；
This alternative embodiment provide a kind of method that when BFD of improvement deletes, wrong report DOWN and causing cuts by mistake and
Corresponding system, Fig. 5 is to report DOWN by mistake and cause during the improvement BFD deletion according to alternative embodiment of the present invention
The system framework figure by mistake cut, as it is shown in figure 5, this system includes:
Resolver 501, after message arrives line card interface, enters analytic message in resolver, and parses
The type of message, carries out different process to message.This resolver 501 can parse common BFD detection
Message and BFD ADMINDOWN message.
BFD intervalometer 502, for creating when BFD session establishment, parses through resolver 501
Each common detection messages, all can deliver to BFD intervalometer 502, carries out the operations such as reset.
Ultrashort intervalometer 503, for swashing when resolved device 501 parses the message into ADMINDOWN
It serves somebody right ultrashort intervalometer 503, the most ultrashort intervalometer will get started timing, wherein, ultrashort intervalometer
Time is well below the time of BFD intervalometer.Owing to the time is significantly shorter than BFD intervalometer, therefore can stand
I.e. time-out.BFD intervalometer 502 can be shielded while activating this ultrashort intervalometer 503.
Master control protocol stack 504, for after ultrashort intervalometer 503 time-out, is notified that master control protocol stack, master control
Protocol stack can issue the deletion action of line card.
Fig. 6 is to report DOWN by mistake and cause blanking method by mistake during improvement BFD deletion according to embodiments of the present invention
Flow chart, as shown in Figure 6, the step of the method includes:
Step S602: packet parsing；When parsing as ADMINDOWN message, perform step S604,
When parsing as other common messages, perform step S612；
Wherein, after message arrives line card interface, parse the type of message, message is carried out different process.
This module is required to parse common BFD detection messages and BFD ADMINDOWN message；
Step S604: parse and activate ultrashort intervalometer into BFD ADMINDOWN message；
Step S606: shielding BFD intervalometer, to prevent BFD timer expiry；
Step S608: after the ultrashort timer expiry being activated, notice master control protocol stack deletes session；
Step S610: ultrashort task of timer completes；
The normal detection messages of step S612:BFD；
Step S614:BFD intervalometer is shielded, and does not do any operation after time-out；
Step S616: common procedure completes.
Correlation technique is will send master control on protocol massages, the BFD protocol stack of master control issues deletion.Originally may be used
Select embodiment to need not message up sending master control protocol stack to process, but directly process is this special on line card
Protocol massages.Need not set up protocol stack on line card, but when conversation establishing, except should create
Outside BFD Session Timer (corresponding to second timer), then create another more short-period intervalometer
(corresponding to first timer), the set of time of this intervalometer is well below the detection cycle of session itself.When
After line card receives BFD message, after resolver parses ADMINDOWN message, activate this timing
Device, and shield the intervalometer of original session, so original session would not report DOWN by mistake, ultrashort at this
During the time out event of intervalometer, notification protocol aspect deletes session.
In another embodiment, additionally providing a kind of software, this software is used for performing above-described embodiment and excellent
Select the technical scheme described in embodiment.
In another embodiment, additionally providing a kind of storage medium, in this storage medium, storage has above-mentioned soft
Part, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc..
Obviously, those skilled in the art should be understood that each module of the invention described above or each step can be with logical
Calculating device realize, they can concentrate on single calculating device, or is distributed in multiple calculating
On the network that device is formed, alternatively, they can realize with calculating the executable program code of device,
Perform it is thus possible to be stored in storing in device by calculating device, and in some cases, can
With be different from order herein perform shown or described by step, or they are fabricated to respectively each collection
Become circuit module, or the multiple modules in them or step are fabricated to single integrated circuit module realize.
So, the present invention is not restricted to the combination of any specific hardware and software.
Above are only the alternative embodiment of the present invention, be not limited to the present invention, for this area
For technical staff, the present invention can have various modifications and variations.All within the spirit and principles in the present invention,
Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. the sending method of a two-way converting detection BFD message, it is characterised in that including:
When two-way converting detection BFD session establishment, line card in distributed system parses and receives
The type of BFD message；
The intervalometer that described cable fastener activating is corresponding with described type；
At described timer expiry, the master control in distributed system of the described line card sends and described intervalometer
Corresponding BFD message.
Method the most according to claim 1, it is characterised in that described BFD type of message includes: be used for
Delete the ADMINDOWN message of BFD session and other messages in addition to ADMINDOWN message.
Method the most according to claim 2, it is characterised in that be described ADMINDOWN at described message
During message, described cable fastener activating includes with specifying the intervalometer that message is corresponding in described type:
The first timer that described cable fastener activating is corresponding with described ADMINDOWN message, wherein, institute
State the timing of first timer less than corresponding with other messages in addition to ADMINDOWN message
The timing of second timer.
Method the most according to claim 3, it is characterised in that described line card master in distributed system
Before control sends the BFD message corresponding with described intervalometer, described method also includes:
Shield described second timer.
Method the most according to claim 4, it is characterised in that at described timer expiry, described line card to
Master control in distributed system sends the BFD message corresponding with described intervalometer and includes:
In described first timer time-out, the master control in described distributed system of the described line card sends described
ADMINDOWN message.
6. the dispensing device of a two-way converting detection BFD message, it is characterised in that be positioned in distributed system
Line card is surveyed, including:
Parsing module, for when two-way converting detection BFD session establishment, parsing the BFD received
The type of message；
Active module, for activating the intervalometer corresponding with described type；
Sending module, at described timer expiry, the master control in distributed system sends with described
The BFD message that intervalometer is corresponding.
Device the most according to claim 6, it is characterised in that described BFD type of message includes: be used for
Delete the ADMINDOWN message of BFD session and other messages in addition to ADMINDOWN message.
Device the most according to claim 7, it is characterised in that be described ADMINDOWN at described message
During message；
Described active module, is additionally operable to activate first timing corresponding with described ADMINDOWN message
Device, wherein, the timing of described first timer less than with in addition to ADMINDOWN message
The timing of the second timer that other messages are corresponding.
Device the most according to claim 8, it is characterised in that described line card master in distributed system
Before control sends the BFD message corresponding with described intervalometer, described device also includes:
Shroud module, is used for shielding described second timer.
Device the most according to claim 9, it is characterised in that
Described sending module, is additionally operable in described first timer time-out, and described line card is to described distributed
Master control in system sends described ADMINDOWN message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510280107.0A CN106301840B (en) | 2015-05-27 | 2015-05-27 | Method and device for sending Bidirectional Forwarding Detection (BFD) message |
| PCT/CN2015/088058 WO2016187979A1 (en) | 2015-05-27 | 2015-08-25 | Transmitting method and apparatus for bidirectional forwarding detection (bfd) message |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510280107.0A CN106301840B (en) | 2015-05-27 | 2015-05-27 | Method and device for sending Bidirectional Forwarding Detection (BFD) message |
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| CN106301840B CN106301840B (en) | 2020-09-15 |
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| WO (1) | WO2016187979A1 (en) |
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| CN109787860A (en) * | 2019-01-15 | 2019-05-21 | 新华三技术有限公司 | Two-way conversion link detection method and device |
| CN109787860B (en) * | 2019-01-15 | 2021-05-07 | 新华三技术有限公司 | Bidirectional forwarding link detection method and device |
| CN111565132B (en) * | 2020-04-24 | 2021-11-30 | 烽火通信科技股份有限公司 | Overtime detection method and system for bidirectional forwarding detection message |
| CN117278345A (en) * | 2023-11-20 | 2023-12-22 | 新华三技术有限公司 | Energy saving method and device applied to network equipment |
| CN117278345B (en) * | 2023-11-20 | 2024-02-13 | 新华三技术有限公司 | Energy saving method and device applied to network equipment |
Also Published As
| Publication number | Publication date |
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| CN106301840B (en) | 2020-09-15 |
| WO2016187979A1 (en) | 2016-12-01 |
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