CN109495345A - A kind of BFD processing method and the network equipment - Google Patents
A kind of BFD processing method and the network equipment Download PDFInfo
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- CN109495345A CN109495345A CN201811399946.4A CN201811399946A CN109495345A CN 109495345 A CN109495345 A CN 109495345A CN 201811399946 A CN201811399946 A CN 201811399946A CN 109495345 A CN109495345 A CN 109495345A
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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
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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
- H04L43/02—Capturing of monitoring data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- Environmental & Geological Engineering (AREA)
- Computer And Data Communications (AREA)
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Abstract
The embodiment of the present application provides a kind of BFD processing method and the network equipment, and the network equipment establishes BFD session with the negotiation of first network equipment, which includes master control borad and multiple interface boards；Master control borad, for determining the session information of BFD session, which includes that message sends interval and message reception interval, and determines the corresponding outgoing interface of destination address of session information record；Master control borad is also used to, if outgoing interface is global mouth, it is determined that the target interface plate where each port that global mouth includes, and by session synchronizing information to each target interface plate；Target interface plate for receiving the synchronous session information of master control borad, and sends interval and message reception interval according to the message in session information and carries out BFD processing.By the technical solution of the application, a large amount of communication between plates resource can be saved, the waste of communication between plates resource is avoided.
Description
Technical field
This application involves fields of communication technology, more particularly, to a kind of BFD processing method and the network equipment.
Background technique
Two-way converting detection (Bidirectional Forwarding Detection, BFD) is general, standardization
, the unrelated quick fault testing mechanism unrelated with agreement of medium, for detect the link in IP network connection situation, guarantee net
It can be quickly detected communication failure between network equipment, so as to timely take measures, guarantee the continuous service of business.
BFD can quickly detect the two-way converting path between two network equipments for various upper-layer protocols (such as Routing Protocol)
Failure, and the detection of Millisecond can be provided.
After local terminal network equipment and peer network device establish BFD session, local terminal network equipment periodically sends BFD report
Text, and receive the BFD message of peer network device periodicity sending.If local terminal network equipment when detecting in do not receive pair
The BFD message for holding the network equipment to send then illustrates the two-way converting path hair between local terminal network equipment and peer network device
Raw failure, and the fault condition is notified to upper-layer protocol.
If local terminal network equipment is made of master control borad and multiple interface boards, master control borad periodically sends BFD message
To interface board, BFD message is sent to peer network device by interface board.Interface board can receive peer network device periodicity
The BFD message of transmission, and BFD message is sent to master control borad.
Obviously, in the above method, need to transmit a large amount of BFD messages between master control borad and interface board, need to occupy a large amount of
Communication between plates resource, cause the waste of communication between plates resource, influence equipment process performance.
Summary of the invention
In view of this, the application provides a kind of BFD processing method and the network equipment, a large amount of communication between plates money can be saved
Source avoids the waste of communication between plates resource, and the process performance of the network equipment can be improved.
In a first aspect, the application provides a kind of network equipment, the network equipment is negotiated to establish with first network equipment
Two-way converting detects BFD session, and the network equipment includes master control borad and multiple interface boards；
The master control borad, for determining that the session information of the BFD session, the session information include that message sends interval
It receives and is spaced with message, and determine the corresponding outgoing interface of destination address of the session information record；
The master control borad is also used to, if the outgoing interface is global mouth, it is determined that each physics that the overall situation mouth includes
Target interface plate where mouthful, and the session information is synchronized to each target interface plate；
The target interface plate is believed for receiving the synchronous session information of the master control borad, and according to the session
The message in breath sends interval and the message receives interval and carries out BFD processing.
With reference to first aspect, in the first possible implementation, the target interface plate is according to the session information
In the message send interval and the message receive interval carry out BFD processing, be specifically used for:
It is sent and is spaced according to the message, determine the message sending instant of the target interface plate, and according to the message
Sending instant, Xiang Suoshu first network equipment send BFD message；And/or
According to the message receive be spaced, determine the BFD session in the local session state of the target interface plate, and
The local session state is sent to the master control borad, so that the master control borad is according to local session state determination
The global session state of BFD session.
With reference to first aspect and the first possible implementation, in the second possible implementation, the target
Interface board sends according to the message and is spaced, and determines the message sending instant of the target interface plate, is specifically used for: passing through formula
One, determine the message sending instant of the target interface plate:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Alternatively, determining the message sending instant of the target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Alternatively, determining the message sending instant of the target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
Wherein, T1 is the message sending instant that target interface plate sends BFD message for the first time, and T2 is that target interface plate is non-for the first time
Send the message sending instant of BFD message；
M is the serial number of target interface plate, and m is 0 to the integer value between (n-1), and the m of different target interface board is different, n
For the total quantity of target interface plate, t is that the message sends interval；
R is the message sending instant that a period sends BFD message on target interface plate；
W is the numerical value between 0 and 1, and s1 is the jitter value of current period, and s2 was the jitter value in a upper period, s1 and
S2 is the numerical value between 0 and (1-w).
With reference to first aspect and the first possible implementation, in the third possible implementation, the target
Interface board according to the message receive be spaced, determine the BFD session in the local session state of the target interface plate, specifically
For: starting detection timer in interval is received according to the message；
If receiving the BFD message that the first network equipment is sent, it is determined that institute before the detection timer expiry
Stating local session state is UP state, and restarts the detection timer；
If not receiving the BFD message that the first network equipment is sent in the detection timer expiry, it is determined that
The local session state is DOWN state, and deletes the detection timer；
When the local session state is DOWN state, if receiving the BFD message that the first network equipment is sent,
It then determines that the local session state is UP state, and restarts detection timer.
With reference to first aspect and the first possible implementation, in the fourth possible implementation, the master control
Plate determines the global session state of the BFD session according to the local session state, is specifically used for:
If the local session state of all target interface plates is DOWN state, it is determined that the global session of the BFD session
State is DOWN state；
If the local session state of either objective interface board is UP state, it is determined that the global session shape of the BFD session
State is UP state.
With reference to first aspect and the 4th kind of possible implementation, in a fifth possible implementation, the master control
After plate determines that the global session state of the BFD session is DOWN state,
The master control borad is also used to, and each target interface plate is notified to delete the session information of the BFD session.
Second aspect, the application provide a kind of two-way converting detection BFD processing method, and the target applied to the network equipment connects
Oralia, the network equipment further include master control borad, and the network equipment establishes BFD session, institute with the negotiation of first network equipment
The method of stating includes:
The synchronous session information of the master control borad is received, the session information includes that message is sent between interval and message reception
Every；Wherein, the master control borad determines the corresponding outgoing interface of destination address of the session information record of the BFD session, if described
Outgoing interface is global mouth, it is determined that the target interface plate where each port that the overall situation mouth includes, and by the session
Synchronizing information is to each target interface plate；
Interval is sent according to the message and the message receives interval and carries out BFD processing.
It is in the first possible implementation, described according to message transmission interval and described in conjunction with second aspect
Message receives interval and carries out BFD processing, comprising:
It is sent and is spaced according to the message, determine the message sending instant of the target interface plate, and according to the message
Sending instant, Xiang Suoshu first network equipment send BFD message；And/or
According to the message receive be spaced, determine the BFD session in the local session state of the target interface plate, and
The local session state is sent to the master control borad, so that the master control borad is according to local session state determination
The global session state of BFD session.
In conjunction with second aspect and the first possible implementation, in the second possible implementation, the basis
The message sends interval, determines the message sending instant of the target interface plate, comprising:
By formula one, the message sending instant of the target interface plate is determined:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Alternatively, determining the message sending instant of the target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Alternatively, determining the message sending instant of the target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
Wherein, T1 is the message sending instant that target interface plate sends BFD message for the first time, and T2 is that target interface plate is non-for the first time
Send the message sending instant of BFD message；
M is the serial number of target interface plate, and m is 0 to the integer value between (n-1), and the m of different target interface board is different, n
For the total quantity of target interface plate, t is that the message sends interval；
R is the message sending instant that a period sends BFD message on target interface plate；
W is the numerical value between 0 and 1, and s1 is the jitter value of current period, and s2 was the jitter value in a upper period, s1 and
S2 is the numerical value between 0 and (1-w).
In conjunction with second aspect and the first possible implementation, in the third possible implementation, the basis
The message receives interval, determines the BFD session in the local session state of the target interface plate, comprising: according to described
Message receives interval starting detection timer；
If receiving the BFD message that the first network equipment is sent, it is determined that institute before the detection timer expiry
Stating local session state is UP state, and restarts the detection timer；
If not receiving the BFD message that the first network equipment is sent in the detection timer expiry, it is determined that
The local session state is DOWN state, and deletes the detection timer；
When the local session state is DOWN state, if receiving the BFD message that the first network equipment is sent,
It then determines that the local session state is UP state, and restarts detection timer.
Based on the above-mentioned technical proposal, after BFD session is established in the network equipment and the negotiation of first network equipment, the network equipment includes
Master control borad the session information of BFD session is synchronized to the interface board that the network equipment includes, interface board according to the session information into
Row BFD processing no longer carries out BFD processing according to the session information by master control borad.
In this way, do not need to transmit a large amount of BFD messages between master control borad and interface board, avoid BFD message master control borad with connect
Multiple interaction forwarding between oralia, saves a large amount of communication between plates resource, improves equipment process performance.Further, when meeting
When the corresponding outgoing interface of destination address for talking about information record is global mouth, if global mouth includes multiple ports, by BFD session
Session information be synchronized to the target interface plate where multiple ports, thus multiple target interface plates realize BFD processing, can
To improve the accuracy of BFD detection.
Detailed description of the invention
It, below will be to the application in order to clearly illustrate the embodiment of the present application 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 only some embodiments as described in this application, for those of ordinary skill in the art, can also be according to this Shen
Please these attached drawings of embodiment obtain other attached drawings.
Fig. 1 is the hardware structure diagram of the network equipment in a kind of embodiment of the application；
Fig. 2 is the flow chart of the BFD processing method in a kind of embodiment of the application.
Specific embodiment
In the term that the embodiment of the present application uses merely for the sake of for the purpose of describing particular embodiments, rather than limit this Shen
Please.The "an" of singular used in the application and claims, " described " and "the" are also intended to including most shapes
Formula, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to comprising one
A or multiple associated any or all of project listed may combine.
It will be appreciated that though various letters may be described using term first, second, third, etc. in the embodiment of the present application
Breath, but these information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example,
In the case where not departing from the application range, the first information can also be referred to as the second information, and similarly, the second information can also be with
The referred to as first information.Depending on context, in addition, used word " if " can be construed to " ... when " or
" when ... " or " in response to determination ".
The embodiment of the present application proposes a kind of network equipment (referred to as present networks equipment), can be applied to include present networks equipment
With the system of first network equipment, present networks equipment and first network equipment may each be the network equipment for supporting BFD agreement, such as
Router, interchanger etc..Wherein, present networks equipment can be distributed apparatus, i.e., present networks equipment may include master control borad and
Multiple interface boards (interface board is referred to as business board), first network equipment can be distributed apparatus, may not be point
Cloth equipment, it is without limitation.
It is shown in Figure 1, it is the application scenarios schematic diagram of the embodiment of the present application, is present networks equipment with the network equipment 11,
The network equipment 12 is illustrated for first network equipment.The network equipment 11 may include master control borad 111, interface board 112, connect
Oralia 113 and interface board 114, interface board 112 include the port A connecting with the network equipment 12, and interface board 113 includes and network
The port B that equipment 12 connects.
Wherein it is possible to configure global mouth R in the network equipment 11, global mouth R is logic interfacing, as aggregation interface or equivalence connect
Mouthful etc., with no restrictions to the type of this global mouth R.Global mouth R includes port A and port B, that is to say, that port A and
Port B is the member interface of global mouth R.
Under above-mentioned application scenarios, after the network equipment 11 establishes BFD session with the network equipment 12, the master control of the network equipment 11
BFD message is periodically sent to interface board 112 by plate 111, and BFD message is sent to the network equipment 12 by interface board 112.Network
Equipment 12 periodically sends BFD message, and the interface board 112 of the network equipment 11 can receive 12 periodicity sending of the network equipment
BFD message, and BFD message is sent to master control borad 111.Obviously, in the above method, between master control borad 111 and interface board 112
It needs to transmit a large amount of BFD messages, needs to occupy a large amount of communication between plates resource, cause the waste of communication between plates resource.
For above-mentioned discovery, in one example, the session information of BFD session can be synchronized to interface by master control borad 111
Plate 112 carries out BFD processing according to the session information by interface board 112.Specifically, interface board 112 can be periodically by BFD
Message is sent to the network equipment 12, which is that interface board 112 itself generates, rather than master control borad 111 is sent to interface
Plate 112.Interface board 112 can receive the BFD message of 12 periodicity sending of the network equipment, and BFD message is no longer sent to master
Control plate 111.Obviously, it in aforesaid way, does not need to transmit a large amount of BFD messages between master control borad 111 and interface board 112.
But, it is assumed that the link failure between interface board 112 and the network equipment 12, then interface board 112 can not be by BFD message
It is sent to the network equipment 12, after BFD message is sent to interface board 113 by the network equipment 12, interface board 113 can not also be reported BFD
Text is handled, abnormal so as to cause BFD session, that is, although still having normal, chain between interface board 113 and the network equipment 12
Road, but BFD session is abnormal.
For above-mentioned discovery, in the embodiment of the present application, BFD session is established in present networks equipment and the negotiation of first network equipment
Afterwards, master control borad, for determining the session information of BFD session, which includes that message sends interval and message reception interval,
Determine the corresponding outgoing interface of destination address of session information record.Master control borad is also used to, if the outgoing interface is global mouth, is determined
Target interface plate where each port that the overall situation mouth includes, and by session synchronizing information to each target interface plate.Mesh
Tag splice oralia for receiving the synchronous session information of master control borad, and sends interval and message according to the message in session information and connects
It receives interval and carries out BFD processing.
In one example, since present networks equipment and first network equipment are to support the network equipment of BFD agreement, because
This, can establish BFD session between present networks equipment and first network equipment.It, can be by present networks when establishing BFD session
BFD session is established in master control borad and first network the equipment negotiation of equipment.
After establishing BFD session, master control borad is assured that the session information of the BFD session, which can wrap
Include but be not limited to: message sends interval, message receives interval, local identifier (Local discriminator, LD) information,
Distal marker is with according with (remote discriminator, RD) information, source IP address (IP address of present networks equipment), destination IP
Location (IP address of first network equipment), detection multiple.Certainly, above-mentioned only example can also include other contents, not to this
It is limited.
Wherein, message transmission interval may is that the minimum of present networks equipment is given out a contract for a project and be spaced A1 and first network equipment most
The larger value of small packet receiving interval B1.For example, if minimum gives out a contract for a project and is spaced A1 and is greater than minimum packet receiving interval B1, in above-mentioned session information
Message send interval, can be minimum and give out a contract for a project and be spaced A1.
Wherein, message, which receives, is spaced the minimum packet receiving interval A2 that may is that present networks equipment and first network equipment most
Small give out a contract for a project is spaced the larger value of B2.For example, if minimum packet receiving interval A2 gives out a contract for a project greater than minimum is spaced B2, in above-mentioned session information
Message receive interval, can be minimum packet receiving interval A2.
In one example, master control borad can determine destination address (the i.e. IP of first network equipment of session information record
Address) corresponding outgoing interface, if the outgoing interface is global mouth, where can determining each port that the overall situation mouth includes
Target interface plate, and the session information is synchronized to each target interface plate.
For example, with reference to shown in Fig. 1, since the session information of BFD session includes purpose IP address, i.e. the IP of the network equipment 12
Address, therefore, the master control borad 111 of the network equipment 11 can be obtained and are somebody's turn to do by the IP address table of query and routing of the network equipment 12
The corresponding outgoing interface of IP address.If the outgoing interface is not global mouth, i.e. outgoing interface is port, then can be using at traditional approach
Reason, repeats no more this treatment process.
If the outgoing interface is global mouth, such as global mouth R, then master control borad 111 can determine global mouth R include port A and
Port B.Then, the interface board 112 where port A can be determined as target interface plate by master control borad 111, and by port
Interface board 113 where B is determined as target interface plate.
Further, after the state of BFD session is switched to UP state, then master control borad 111 can be by the meeting of the BFD session
Synchronizing information is talked about to target interface plate, as to interface board 112 and interface board 113.
In one example, target interface plate, can be according to the message in the session information after receiving session information
It sends interval and message receives interval and carries out BFD processing.For example, target interface plate can send interval to first according to the message
The network equipment send BFD message so that first network equipment according to BFD packet check path whether failure.And/or purpose connects
Oralia can receive the BFD message of first network equipment transmission, and receive interval and the BFD packet check path according to the message
Whether failure.Below in conjunction with specific embodiment, BFD message is sent to target interface plate, target interface plate receives the mistake of BFD message
Journey is illustrated.
Embodiment 1: target interface plate sends BFD message to first network equipment.Specifically, target interface plate is according to the report
Text sends interval, the message sending instant of this target interface plate is determined, and according to the message sending instant, to first network equipment
BFD message is sent, i.e., sends BFD message in the message sending instant.
In one example, target interface plate sends according to the message and is spaced, and determines that the message of this target interface plate is sent
Moment can include but is not limited to: target interface plate can according to the message send interval, this target interface plate serial number and
The total quantity of target interface plate determines the message sending instant of this target interface plate；Alternatively, target interface plate can be according to the report
Text sends interval, the serial number of this target interface plate, the total quantity of target interface plate and jitter value, determines this target interface plate
Message sending instant.
Below in conjunction with application scenarios shown in FIG. 1, above-described embodiment 1 is described in detail.
Master control borad 111 determine target interface plate total quantity n and each target interface plate serial number m, m be located at 0 to
Integer value between n-1, and the serial number m of different target interface board is different.For example, the total quantity n of target interface plate is 2, interface
The serial number m of plate 112 is 0, and the serial number m of interface board 113 is 1.
Then, the serial number m of the total quantity n of target interface plate and target interface plate can be sent to target by master control borad 111
Interface board.For example, total quantity 2 and the serial number of interface board 112 0 can be sent to interface board 112 by master control borad 111, and will be total
Amount 2 and the serial number 1 of interface board 113 are sent to interface board 113.
In addition, master control borad 111 can also be by session synchronizing information to interface board 112 and interface board 113, this session information
Message can be carried and send interval t, such as it is 100 milliseconds that message, which sends interval t,.
Wherein, total quantity n, serial number m and session information can be synchronized to target interface plate by master control borad 111 together, in this way,
Target interface plate also can receive total quantity n and serial number m when receiving session information, and report is obtained from session information
Text sends interval t.Then, target interface plate can send interval t using total quantity n, serial number m and message and determine that message is sent
Moment is below illustrated method of determination.
Mode one, target interface plate determine the message sending instant of this target interface plate by formula one:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Wherein, T1 is the message sending instant that this target interface plate sends BFD message for the first time, and T2 is the non-head of target interface plate
The secondary message sending instant for sending BFD message；R is the message sending instant that a period sends BFD message on target interface plate.
For interface board 112, serial number m is 0, and it is 100 milliseconds that message, which sends interval t, and total quantity n is 2.It reports for the first time
Literary sending instant is 0 millisecond, in the 0th millisecond of transmission BFD message；Second of message sending instant is 0+2*100, i.e., 200 milliseconds,
In the 200th millisecond of transmission BFD message；Third time message sending instant is 200+2*100, i.e., 400 milliseconds, sends out at the 400th millisecond
BFD message is sent, and so on.
Wherein, interface board 112 realizes above-mentioned transmission process by timer.For example, when sending BFD message for the first time, no
It needs to start timer, directly transmits BFD message.After sending BFD message, start timer, the time-out time of timer is
200 milliseconds；After timer expiry, BFD message is sent.After sending BFD message, timer is restarted, timer surpasses
When the time be 200 milliseconds, and so on.
For interface board 113, serial number m is 1, and it is 100 milliseconds that message, which sends interval t, and total quantity n is 2.First time message hair
Sending is 1*100 constantly, i.e., 100 milliseconds, can be in the 100th millisecond of transmission BFD message；Second of message sending instant is 100+2*
100, i.e., 300 milliseconds, can be in the 300th millisecond of transmission BFD message；Third time message sending instant is 300+2*100, i.e., 500
Millisecond, and so on.
Wherein, interface board 113 can realize above-mentioned transmission process by timer.For example, sending BFD message for the first time
When, then it can star timer, the time-out time of timer is 100 milliseconds；After timer expiry, BFD message is sent.It is sending out
After sending BFD message, timer can be restarted, the time-out time of timer is 200 milliseconds；After timer expiry, send
BFD message, and so on.
In conclusion being reported for for the network equipment 11 in the 0th millisecond of transmission BFD message, in the 100th millisecond of transmission BFD
Text, in the 200th millisecond of transmission BFD message, and so on, that is to say, that the network equipment 11 is when sending BFD message, BFD message
Message send between be divided into 100 milliseconds.
Mode two, target interface plate determine the message sending instant of this target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Wherein, w is the numerical value between 0 and 1, can rule of thumb be configured, for example, w, which can be, is located at (0.75-1)
Between numerical value.
For interface board 112, serial number m is 0, and it is 100 milliseconds that message, which sends interval t, and total quantity n is 2, w 0.9.First
Secondary message sending instant is 0 millisecond；Second of message sending instant is 0+2*100*0.9, i.e., 180 milliseconds；Third time message hair
Sending is 180+2*100*0.9 constantly, i.e., 360 milliseconds, and so on.
In addition, serial number m is 1 for interface board 113, it is 100 milliseconds that message, which sends interval t, and total quantity n is that 2, w is
0.9.Based on this, first time message sending instant is 1*100*0.9, i.e., 90 milliseconds；Second of message sending instant is 90+2*
100*0.9, i.e., 270 milliseconds, and so on.
In conclusion being reported for for the network equipment 11 in the 0th millisecond of transmission BFD message, in the 90th millisecond of transmission BFD
Text, in the 180th millisecond of transmission BFD message, and so on.
Mode three, target interface plate determine the message sending instant of this target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
Wherein, s1 is the jitter value of current period, and s2 was the jitter value in a upper period, and s1 and s2 are between 0 and (1-w)
Numerical value.
For interface board 112, serial number m is 0, and it is 100 milliseconds that message, which sends interval t, and total quantity n is 2, w 0.9, shake
Value is between 0-0.1.First time message sending instant is 0 millisecond；When sending BFD message second, current period is trembled
Dynamic value is 0.08 generated at random, and the jitter value in a upper period is 0, and second of message sending instant is 0+2*100*0.9+
0.08*100, i.e., 188 milliseconds；When third time sends BFD message, the jitter value of current period is generate at random 0.06, on
The jitter value in one period is 0.08, and third time message sending instant is 188+2*100*0.9+0.06*100-0.08*100, i.e.,
366 milliseconds.
For interface board 113, serial number m is 1, and it is 100 milliseconds that message, which sends interval t, and total quantity n is 2, w 0.9, shake
Between 0-0.1, the message sending instant of interface board 113 repeats no more value.
Embodiment 2: target interface plate receives the BFD message that first network equipment is sent.Specifically, target interface plate according to
Message receives interval, determines BFD session in the local session state of this target interface plate, for example, can be according to whether receiving
The BFD message that first network equipment is sent, determines BFD session in the local session state of this target interface plate.Then, target connects
Oralia can send the local session state to master control borad, so that master control borad determines the BFD session according to the local session state
Global session state.
In one example, target interface plate is received according to message and is spaced, and determines BFD session in the office of this target interface plate
Portion's session status, can include but is not limited to: receive interval starting detection timer according to the message；If super in detection timer
Shi Qian receives the BFD message of first network equipment transmission, it is determined that local session state is UP state, and restarts inspection
Survey timer；If not receiving the BFD message of first network equipment transmission when detecting timer expiry, it is determined that part meeting
Speech phase is DOWN state, and deletes detection timer.When local session state is DOWN state, if receiving first network
The BFD message that equipment is sent, it is determined that local session state is UP state, and restarts detection timer.
It should be noted that target interface plate does not delete the meeting of BFD session when local session state is DOWN state
Information is talked about, i.e. BFD session still has in this target interface plate.Based on this, if target interface plate receives first network and sets again
The BFD message that preparation is sent, it is determined that local session state is UP state, and restarts detection timer, that is to say, that BFD
Session restores in this target interface plate.
In one example, master control borad determines the global session state of BFD session according to local session state, may include
But it is not limited to: if the local session state of all target interface plates is DOWN state, can determines the global session of BFD session
State is DOWN state；If the local session state of either objective interface board is UP state, the overall situation of BFD session can be determined
Session status is UP state.
After master control borad determines that the global session state of BFD session is DOWN state, master control borad can also notify each mesh
Tag splice oralia deletes the session information of BFD session, and so far, BFD session is deleted.
In addition, being even if there is the local session state of target interface plate if the global session state of BFD session is UP state
DOWN state, the target interface plate will not delete the session information of the BFD session, that is to say, that BFD session is deleted not yet
It removes, target interface plate still can handle BFD message.
Below in conjunction with application scenarios shown in FIG. 1, above-described embodiment 2 is described in detail.
Master control borad 111 can safeguard status values, and the digit of status values is identical as the quantity of target interface plate, alternatively,
The digit of status values is greater than the quantity of target interface plate.For example, when there are 2 target interface plates, the digit of status values
It can be 2, therefore, the value of status values can be 00,01,10,11.0 expression local session state is DOWN state, 1
Indicate that local session state is UP state, the local session state of first expression interface board 112, second expression interface board
113 local session state.
When master control borad 111 is by session synchronizing information to interface board 112 and interface board 113, master control borad 111 can be by status number
Value is set as 00, and starts timer t1, and the time-out time of timer t1 is long, when can such as be greater than the detection of BFD message
Between.If status values remain as 00 when timer t1 time-out, it is determined that the global session state of BFD session is DOWN state, i.e.,
BFD session DOWN, can delete the session information of the BFD session.If status values are modified to before timer t1 time-out
01,10 or 11, it is determined that the global session state of BFD session is UP state, deletes timer t1.
Interface board 112 sets the local session state of BFD session to after the session information for receiving BFD session
DOWN state.If not receiving the BFD message of the transmission of the network equipment 12, DOWN state is kept.If interface board 112 receives net
The BFD message that network equipment 12 is sent, then set UP state for the local session state of BFD session, and start timer t2, fixed
When device t2 time-out time can be BFD message detection time, which can receive for the message in session information
It is spaced * and detects multiple.It is such as UP state from DOWN status modifier since the local session state of BFD session changes, because
This, interface board 112 can also notify the local session state (i.e. UP state) after variation to master control borad 111.
Master control borad 111, can be by corresponding bit (the i.e. state of interface board 112 after receiving the local session state
First of numerical value) it is revised as 1, indicate that the local session state of interface board 112 is UP state, i.e. the first of status values is
1.If timer t1 exists, master control borad 111 can delete timer t1.
After starting timer t2, before timer t2 time-out, if interface board 112 receives the transmission of the network equipment 12
BFD message, then the local session state of BFD session remains as UP state, and restarts timer t2, and so on.Due to
The local session state of BFD session does not change, i.e., local session state is still UP state, and interface board 112 is not needed office
Portion's session status is notified to master control borad 111.
After starting timer t2, before timer t2 time-out, if interface board 112 does not receive the transmission of the network equipment 12
BFD message, then the local session state of BFD session is DOWN state.It changes in the local session state of BFD session
When, it is such as DOWN state from UP status modifier, then interface board 112 can also be by local session state (the i.e. DOWN shape after variation
State) it notifies to master control borad 111.Master control borad 111, can be by the corresponding ratio of interface board 112 after receiving the local session state
Special position (i.e. first of status values) is revised as 0, indicates that the local session state of interface board 112 is DOWN state.
It should be noted that interface board 112 can also be deleted when the local session state of BFD session is DOWN state
Timer t2, still, interface board 112 do not delete the session information of BFD session, and the deletion for only receiving master control borad 111 is logical
When knowing, the session information of BFD session just will be deleted.That is, BFD session still has in interface board 112, if interface board
112 receive the BFD message of the transmission of the network equipment 12 again, it is determined that the local session state of BFD session is UP state, Ke Yichong
New starting timer t2.Due to BFD session local session state from DOWN status modifier be UP state, interface board 112
Local session state (i.e. UP state) after variation can be notified to master control borad 111.
The process flow of interface board 113 is similar with the process flow of interface board 112, and it is no longer repeated herein.
In one example, if the local session state of interface board 112 is DOWN state, and the local meeting of interface board 113
Speech phase is DOWN state, and if status values are 00, then master control borad 111 determines that the global session state of BFD session is DOWN shape
State.Based on this, master control borad 111 can delete the session information of the BFD session with notification interface plate 112 and interface board 113.Further
, interface board 112 can then delete the session information of the BFD session, interface board 113 is connecing after receiving deletion notice
After receiving deletion notice, then the session information of the BFD session can be deleted, so far, BFD session is successfully deleted.
If the local session state of interface board 112 is UP state, and/or, the local session state of interface board 113 is UP shape
State, if status values are 01,10 or 11, then master control borad 111 determines that the global session state of BFD session is UP state.Based on this,
Even if the local session state of interface board is DOWN state, which will not delete the session information of the BFD session, i.e.,
BFD session is deleted not yet.
In conclusion only just will be deleted BFD when the local session state of all target interface plates is DOWN state
The session information of session not will be deleted the session of BFD session if the local session state of either objective interface board is UP state
Information.For example, if the network equipment 12 sends BFD message to interface board 112, without sending BFD message to interface board 113, although
The local session state of interface board 113 is DOWN state, still, since the local session state of interface board 112 is UP state, because
This, not will be deleted the session information of BFD session, that is to say, that the network equipment 11 still can carry out BFD processing.
Based on the above-mentioned technical proposal, it does not need to transmit a large amount of BFD reports in the embodiment of the present application, between master control borad and interface board
Text avoids BFD message from repeatedly interacting forwarding between master control borad and interface board, saves a large amount of communication between plates resource, improves
Equipment process performance.When the corresponding outgoing interface of destination address of session information record is global mouth, if global mouth includes multiple
Port, then the target interface plate being synchronized to the session information of BFD session where multiple ports, in multiple target interface plates
It realizes BFD processing, the accuracy of BFD detection can be improved.It (such as interface board failure or is connect if there is an interface board is not in place
Oralia is pulled out), then other interface boards can also continue to work, keep the continuity of BFD detection and the stabilization of BFD session
Property.
A kind of BFD processing method is also proposed in the embodiment of the present application, applied to the target interface plate of the network equipment, the net
Network equipment further includes master control borad, and the network equipment establishes BFD session with the negotiation of first network equipment, shown in Figure 2, is
The flow diagram of the BFD processing method, this method may include:
Step 201, the synchronous session information of master control borad is received, which includes that message transmission interval and message receive
Interval.Wherein, master control borad can determine the corresponding outgoing interface of destination address of the session information record of the BFD session, if should go out
Interface is global mouth, then can determine the target interface plate where each port that the overall situation mouth includes, and the session is believed
Breath is synchronized to each target interface plate；
Step 202, interval is sent according to the message and the message receives interval and carries out BFD processing.
It is spaced specifically, can be sent according to the message, determines the message sending instant of target interface plate, and according to the report
Literary sending instant sends BFD message to first network equipment；And/or received and be spaced according to the message, determine BFD session in mesh
The local session state of tag splice oralia, and the local session state is sent to master control borad, so that master control borad is according to the part session
State determines the global session state of BFD session.
Wherein, it is sent and is spaced according to the message, determined the message sending instant of target interface plate, may include:
By formula one, the message sending instant of the target interface plate is determined:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Alternatively, determining the message sending instant of the target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Alternatively, determining the message sending instant of the target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
In above-mentioned formula one, formula two and formula three, T1 is the message transmission that target interface plate sends BFD message for the first time
Moment, T2 are the non-message sending instant for sending BFD message for the first time of target interface plate；M be target interface plate serial number, m be 0 to
(n-1) integer value between, and the m of different target interface board is different, n is the total quantity of target interface plate, and t is message hair
Send interval；R is the message sending instant that a period sends BFD message on target interface plate；W is the numerical value between 0 and 1,
S1 is the jitter value of current period, and s2 was the jitter value in a upper period, and s1 and s2 are the numerical value between 0 and (1-w).
Wherein, it is received and is spaced according to the message, determine that BFD session in the local session state of target interface plate, can wrap
It includes: starting detection timer in interval is received according to the message；If receiving first network equipment hair before detecting timer expiry
The BFD message sent, it is determined that the local session state is UP state, and restarts detection timer；If in detection timer
When overtime, the BFD message of first network equipment transmission is not received, it is determined that the local session state is DOWN state, and is deleted
Except detection timer.Further, when the local session state is DOWN state, if receiving the transmission of first network equipment
BFD message, it is determined that the local session state is UP state, and can restart detection timer.
Based on the above-mentioned technical proposal, it does not need to transmit a large amount of BFD reports in the embodiment of the present application, between master control borad and interface board
Text avoids BFD message from repeatedly interacting forwarding between master control borad and interface board, saves a large amount of communication between plates resource, improves
Equipment process performance.When the corresponding outgoing interface of destination address of session information record is global mouth, if global mouth includes multiple
Port, then the target interface plate being synchronized to the session information of BFD session where multiple ports, in multiple target interface plates
It realizes BFD processing, the accuracy of BFD detection can be improved.It (such as interface board failure or is connect if there is an interface board is not in place
Oralia is pulled out), then other interface boards can also continue to work, keep the continuity of BFD detection and the stabilization of BFD session
Property.
Based on similarly applying conceiving with the above method, the embodiment of the present application also provides a kind of network equipment, comprising: processing
Device and machine readable storage medium；Wherein, several computer instructions, the processing are stored on the machine readable storage medium
When device executes the computer instruction, above-mentioned BFD processing method is realized.
The embodiment of the present application also provides a kind of machine readable storage medium, if being stored on the machine readable storage medium
Dry computer instruction, the computer instruction are performed, and realize above-mentioned BFD processing method.
Here, machine readable storage medium can be any electronics, magnetism, optics or other physical storage devices, can be with
Include or store information, such as executable instruction, data, etc..For example, machine readable storage medium may is that RAM (Radom
Access Memory, random access memory), volatile memory, nonvolatile memory, flash memory, memory driver is (as hard
Disk drive), solid state hard disk, any kind of storage dish (such as CD, dvd) perhaps similar storage medium or they
Combination.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes computer usable program code that the embodiment of the present application, which can be used in one or more,
The computer implemented in computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of program product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It is generally understood that being realized by computer program instructions each in flowchart and/or the block diagram
The combination of process and/or box in process and/or box and flowchart and/or the block diagram.It can provide these computer journeys
Sequence instruct to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor with
A machine is generated, so that the instruction generation executed by computer or the processor of other programmable data processing devices is used for
Realize the dress for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram
It sets.
Moreover, these computer program instructions also can store be able to guide computer or other programmable datas processing set
In standby computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates
Manufacture including command device, the command device are realized in one process of flow chart or multiple processes and/or block diagram one
The function of being specified in a box or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing devices, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer
Or the instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram
The step of function of being specified in one box or multiple boxes.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of network equipment, which is characterized in that the network equipment establishes two-way converting inspection with the negotiation of first network equipment
BFD session is surveyed, the network equipment includes master control borad and multiple interface boards；
The master control borad, for determining that the session information of the BFD session, the session information include that message sends interval and report
Text receives interval, and determines the corresponding outgoing interface of destination address of the session information record；
The master control borad is also used to, if the outgoing interface is global mouth, it is determined that each port institute that the overall situation mouth includes
Target interface plate, and the session information is synchronized to each target interface plate；
The target interface plate, for receiving the synchronous session information of the master control borad, and according in the session information
The message send interval and the message receive interval carry out BFD processing.
2. equipment according to claim 1, which is characterized in that the target interface plate is according to the institute in the session information
It states message transmission interval and the message receives interval progress BFD processing, be specifically used for:
It is sent and is spaced according to the message, determine the message sending instant of the target interface plate, and send according to the message
Moment, Xiang Suoshu first network equipment send BFD message；And/or
It is received and is spaced according to the message, determine the BFD session in the local session state of the target interface plate, and to institute
It states master control borad and sends the local session state, so that the master control borad determines the BFD meeting according to the local session state
The global session state of words.
3. equipment according to claim 2, which is characterized in that the target interface plate sends according to the message and is spaced,
The message sending instant for determining the target interface plate, is specifically used for:
By formula one, the message sending instant of the target interface plate is determined:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Alternatively, determining the message sending instant of the target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Alternatively, determining the message sending instant of the target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
Wherein, T1 is the message sending instant that target interface plate sends BFD message for the first time, and T2 is that target interface plate is non-to be sent for the first time
The message sending instant of BFD message；
M is the serial number of target interface plate, and m is 0 to the integer value between (n-1), and the m of different target interface board is different, and n is mesh
The total quantity of tag splice oralia, t are that the message sends interval；
R is the message sending instant that a period sends BFD message on target interface plate；
W is the numerical value between 0 and 1, and s1 is the jitter value of current period, and s2 was the jitter value in a upper period, and s1 and s2 are equal
It is the numerical value between 0 and (1-w).
4. equipment according to claim 2, which is characterized in that the target interface plate is received according to the message and is spaced,
Determine that the BFD session in the local session state of the target interface plate, is specifically used for:
Interval starting detection timer is received according to the message；
If receiving the BFD message that the first network equipment is sent, it is determined that the office before the detection timer expiry
Portion's session status is UP state, and restarts the detection timer；
If not receiving the BFD message that the first network equipment is sent, it is determined that described in the detection timer expiry
Local session state is DOWN state, and deletes the detection timer；
When the local session state is DOWN state, if receiving the BFD message that the first network equipment is sent, really
The fixed local session state is UP state, and restarts detection timer.
5. equipment according to claim 2, which is characterized in that the master control borad determines institute according to the local session state
The global session state for stating BFD session, is specifically used for:
If the local session state of all target interface plates is DOWN state, it is determined that the global session state of the BFD session
It is DOWN state；
If the local session state of either objective interface board is UP state, it is determined that the global session state of the BFD session is
UP state.
6. equipment according to claim 5, which is characterized in that the master control borad determines the global session of the BFD session
After state is DOWN state,
The master control borad is also used to, and each target interface plate is notified to delete the session information of the BFD session.
7. a kind of two-way converting detects BFD processing method, which is characterized in that described applied to the target interface plate of the network equipment
The network equipment further includes master control borad, and the network equipment establishes BFD session, the method packet with the negotiation of first network equipment
It includes:
The synchronous session information of the master control borad is received, the session information includes that message sends interval and message reception interval；
Wherein, the master control borad determines the corresponding outgoing interface of destination address of the session information record of the BFD session, if described go out to connect
Mouthful for global mouth, it is determined that the target interface plate where each port that the overall situation mouth includes, and by the session information
It is synchronized to each target interface plate；
Interval is sent according to the message and the message receives interval and carries out BFD processing.
8. the method according to the description of claim 7 is characterized in that described connect according to message transmission interval and the message
It receives interval and carries out BFD processing, comprising:
It is sent and is spaced according to the message, determine the message sending instant of the target interface plate, and send according to the message
Moment, Xiang Suoshu first network equipment send BFD message；And/or
It is received and is spaced according to the message, determine the BFD session in the local session state of the target interface plate, and to institute
It states master control borad and sends the local session state, so that the master control borad determines the BFD meeting according to the local session state
The global session state of words.
9. according to the method described in claim 8, it is characterized in that, it is described according to the message send be spaced, determine the mesh
The message sending instant of tag splice oralia, comprising:
By formula one, the message sending instant of the target interface plate is determined:
T1=m*t；Alternatively, T2=R+n*t；Formula one；
Alternatively, determining the message sending instant of the target interface plate by formula two:
T1=m*t*w；Alternatively, T2=R+n*t*w；Formula two；
Alternatively, determining the message sending instant of the target interface plate by formula three:
T1=m*t*w；Alternatively, T2=R+n*t*w+s1*t-s2*t；Formula three；
Wherein, T1 is the message sending instant that target interface plate sends BFD message for the first time, and T2 is that target interface plate is non-to be sent for the first time
The message sending instant of BFD message；
M is the serial number of target interface plate, and m is 0 to the integer value between (n-1), and the m of different target interface board is different, and n is mesh
The total quantity of tag splice oralia, t are that the message sends interval；
R is the message sending instant that a period sends BFD message on target interface plate；
W is the numerical value between 0 and 1, and s1 is the jitter value of current period, and s2 was the jitter value in a upper period, and s1 and s2 are equal
It is the numerical value between 0 and (1-w).
10. according to the method described in claim 8, it is characterized in that, described received according to the message is spaced, described in determination
Local session state of the BFD session in the target interface plate, comprising:
Interval starting detection timer is received according to the message；
If receiving the BFD message that the first network equipment is sent, it is determined that the office before the detection timer expiry
Portion's session status is UP state, and restarts the detection timer；
If not receiving the BFD message that the first network equipment is sent, it is determined that described in the detection timer expiry
Local session state is DOWN state, and deletes the detection timer；
When the local session state is DOWN state, if receiving the BFD message that the first network equipment is sent, really
The fixed local session state is UP state, and restarts detection timer.
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| CN112887229A (en) * | 2021-01-11 | 2021-06-01 | 杭州迪普科技股份有限公司 | Session information synchronization method and device |
| CN113765797A (en) * | 2021-09-24 | 2021-12-07 | 新华三信息安全技术有限公司 | Message processing method and device |
| CN115766407A (en) * | 2022-09-27 | 2023-03-07 | 新华三技术有限公司 | BFD session maintenance system, method and device |
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