CN107547380A - A kind of communication link determines method and device - Google Patents
A kind of communication link determines method and device Download PDFInfo
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- CN107547380A CN107547380A CN201710335370.4A CN201710335370A CN107547380A CN 107547380 A CN107547380 A CN 107547380A CN 201710335370 A CN201710335370 A CN 201710335370A CN 107547380 A CN107547380 A CN 107547380A
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Abstract
The embodiments of the invention provide a kind of communication link to determine method and device, and applied to the network equipment of branch node, method includes：Link-quality of each branch node of loop detection to the link of Centroid；When loop detection number reaches preset times, the average of the link-quality of each link detected is calculated respectively；Calculate the difference of each two average；When the absolute value of each difference, which is respectively less than, is equal to difference threshold, former communication link is defined as current communications link.Using the embodiment of the present invention, efficiently avoid the link-quality of multilink average it is same or like when link concussion, improve the communication quality between branch node and Centroid.
Description
Technical field
The present invention relates to communication technical field, and method and device is determined more particularly to a kind of communication link.
Background technology
Networking as shown in Figure 1, including branch node and Centroid, wherein, branch node includes client (such as client
End 100 and client 101) and the network equipment (such as protection wall equipment 102), Centroid includes client (such as He of client 200
Client 201) and the network equipment (such as protection wall equipment 202).
In branch hub point scene, a SP (Service Provider, service provider) provides a link, point
The Zhi Jiedian network equipment accesses network by multilink, for example accesses network by SP such as UNICOM, movement, telecommunications.When point
When Zhi Jiedian communicates with Centroid, the network equipment of branch node according to default link priority order from high to low,
Detect the link-quality (link-quality can determine according to parameters such as packet loss quantity, delays) of each link, each link
Detect once as a circulation, communication link is redefined after preset times are circulated, it is, each link is directed to,
The link-quality obtained according to the link preset times are detected, the link-quality average of the link is calculated, according to each of the links
Link-quality average, the best link of link-quality is defined as communication link, that is, the best link of link-quality is set
State of activation is set to, other links are defined as non-communicating link, that is, other links are arranged into deactivation status, now,
The best link of link-quality may be used for the communication between branch node and Centroid.
In actual applications, the link-quality average for the multilink that the network equipment of branch node detects may be identical
Or it is close, such as at one's leisure between section detecting link link-quality, in this case, according to above-mentioned communication link determination side
Method, impact or the flow of very little somewhat may all cause to redefine communication link, and this easily causes the concussion of link, shadow
Ring the communication quality between branch node and Centroid.
The content of the invention
The purpose of the embodiment of the present invention is that providing a kind of communication link determines method and device, to avoid multilink
The concussion of link when the average of link-quality is same or like, improve the communication quality between branch node and Centroid.Specifically
Technical scheme is as follows：
On the one hand, the embodiment of the invention discloses a kind of communication link to determine method, and the network applied to branch node is set
Standby, methods described includes：
Link-quality of each branch node of loop detection to the link of Centroid；
When loop detection number reaches preset times, calculate respectively each link detected link-quality it is equal
Value；
Calculate the difference of each two average；
When the absolute value of each difference, which is respectively less than, is equal to difference threshold, former communication link is defined as present communications chain
Road.
Two aspects, the embodiment of the invention discloses a kind of communication link determining device, the network applied to branch node is set
Standby, described device includes：
Probe unit, the link-quality for each branch node of loop detection to the link of Centroid；
First computing unit, for when loop detection number reaches preset times, calculating each detected respectively
The average of the link-quality of link；
Second computing unit, for calculating the difference of each two average；
Determining unit, for when the absolute value of each difference is respectively less than and is equal to difference threshold, former communication link to be determined
For current communications link.
In the embodiment of the present invention, the link-quality of each branch node of loop detection to the link of Centroid；When following
When ring detection times reach preset times, the average of the link-quality of each link detected is calculated respectively；Calculate every two
The difference of individual average；When the absolute value of each difference, which is respectively less than, is equal to difference threshold, illustrate the link-quality of multilink
Average is same or like, then refusal redefines communication link, and former communication link is set into current communications link.So, effectively
Ground avoid the link-quality of multilink average it is same or like when link concussion, improve branch node and centromere
Communication quality between point.Certainly, any product or method for implementing the present invention must be not necessarily required to reach above-described simultaneously
All advantages.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of networking schematic diagram；
Fig. 2 is a kind of schematic flow sheet that a kind of communication link provided in an embodiment of the present invention determines method；
Fig. 3 is another schematic flow sheet that a kind of communication link provided in an embodiment of the present invention determines method；
Fig. 4 is a kind of structural representation of communication link determining device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The concussion of link is avoided when may be same or like for the average of the link-quality of multilink, improves branch's section
Communication quality between point and Centroid, based on Fig. 1, the invention provides one kind letter link to determine method and device.Lead to below
Specific embodiment is crossed, the present invention is entered to describe in detail.
With reference to figure 2, Fig. 2 is a kind of schematic flow sheet that a kind of communication link provided in an embodiment of the present invention determines method,
Applied to the network equipment of branch node, this method includes：
S201：Link-quality of each branch node of loop detection to the link of Centroid；
Here, link-quality determines according to parameters such as packet loss quantity, delays.Based on this, the link quality values detected are got over
It is small, such as packet loss quantity is fewer, illustrates that link-quality is better.
The preferential of each link is pre-set in one embodiment of the present of invention, the network equipment of branch node
Level, the network equipment of branch node from high to low order, detect the link-quality of each link according to priority, each
Link is detected once as a circulation.
S202：When loop detection number reaches preset times, the link matter of each link detected is calculated respectively
The average of amount；
When loop detection number reaches preset times, for each link, the network equipment of branch node detects
Preset times link-quality is arrived, according to formula
The average of the link-quality of each link is calculated respectively；Wherein, QiFor the link-quality of i-th link
Average, n are above-mentioned preset times, QjThe link-quality detected for the jth time of i-th link.
Here, the average of link-quality is smaller, illustrates that link-quality is better.
S203：Calculate the difference of each two average；
S204：When the absolute value of each difference, which is respectively less than, is equal to difference threshold, former communication link is defined as current logical
Believe link.
If the absolute value of each difference is respectively less than equal to difference threshold, illustrate the average of the link-quality of each link
Same or like, then refusal carries out link switching, it is, refusal redefines communication link, by former communication link (namely
Originally it was the link for activating (active) state) it is defined as current communications link, it is that the state of the link of active states is kept originally
It is constant；In addition, non-communicating link (being namely the link for deactivating (inactive) state originally) is defined as current non-communicating chain
Road, it was that the state of the link of inactive states also keeps constant originally, this effectively avoids the link-quality of multilink
The concussion of link, improves the communication quality between branch node and Centroid when average may be same or like.
In one embodiment of the invention, in order to reduce amount of calculation, matter is prestored in the network equipment of branch node
Threshold value is measured, after the average of link-quality of each link detected is calculated, average can be more than quality threshold
The state of link is directly disposed as inactive states；Calculate the difference that each two is less than or equal to the average of quality threshold.
In this case, if the absolute value of each difference, which is respectively less than, is equal to difference threshold, and corresponding to former communication link
Average is less than or equal to quality threshold, then former communication link is defined as into current communications link, is the link of active states originally
State is constant, and the state of other links is arranged to inactive states；
If the absolute value of each difference, which is respectively less than, is equal to difference threshold, but average corresponding to former communication link is more than quality threshold
Value, then the link of highest priority is selected from link corresponding to the average less than or equal to quality threshold, by selected link
It is defined as current communications link, the state of selected link is arranged to active states, by addition to selected link
The state of link is arranged to inactive states.
In one embodiment of the invention, if the absolute value of each difference is all higher than difference threshold, current chain is illustrated
Road mass difference is larger, the best link of link-quality is selected as current communications link, it is, by corresponding to minimum mean
Link is defined as current communications link, and the state of link corresponding to minimum mean is arranged into active states, will remove minimum equal
The state of the outer link of link corresponding to value is arranged to inactive states.
In one embodiment of the invention, if the difference that absolute value is more than difference threshold in the difference being calculated be present
It is less than or equal to the difference of difference threshold with absolute value, then is less than or equal to all links corresponding to the difference of difference threshold from absolute value
The link alternately link of middle selection highest priority；Here, absolute value is less than or equal to institute corresponding to the difference of difference threshold
There is link to include：Absolute value is less than or equal to link corresponding to minuend corresponding to the difference of difference threshold and subtrahend；
Link corresponding to minimum mean in alternative link and remaining link is defined as current communications link, by alternative link
With minimum mean in remaining link corresponding to the state of link be arranged to active states, will remove in alternative link and remaining link
The state of link corresponding to minimum mean outside link is arranged to inactive states.Here, remaining link includes：Except absolute value
Less than or equal to the link corresponding to the difference of difference threshold outside all links.
In one embodiment of the present invention, for the ease of determining current communications link, above-mentioned remaining link includes removing
Absolute value is less than or equal to the link that the outer average of all links corresponding to the difference of difference threshold is less than or equal to quality threshold.
The flow chart that communication link with reference to shown in Fig. 3 determines, comprehensive to illustrate above-mentioned each embodiment, the flow includes：
Link-quality of each branch node of S01, loop detection to the link of Centroid；
S02, when loop detection number reaches preset times, calculate each branch node detecting respectively to center
The average of the link-quality of the link of node；
S03, calculate the difference that each two is less than or equal to the average of quality threshold；
When the absolute value of each difference, which is respectively less than, is equal to difference threshold, S04 is performed；When the absolute value of each difference is big
When difference threshold, S07 is performed；When the absolute value of each difference is not all higher than difference threshold, S08 is performed；
S04, judge whether average corresponding to former communication link is less than or equal to quality threshold；If it is, perform S05；Otherwise,
Perform S06；
S05, former communication link is defined as current communications link；
Specifically, be originally active states link state it is constant, the state of other links is arranged to inactive shapes
State.
S06, the link of highest priority in link corresponding to the average less than or equal to quality threshold is defined as to state worked as
Preceding communication link；
Specifically, the state of the link of highest priority in link corresponding to the average less than or equal to quality threshold is set
It is worth and is arranged to inactive states for active states, the state of other links.
S07, link corresponding to minimum mean is defined as current communications link；
Specifically, it is active states by the state arranges value of link corresponding to minimum mean, the state of other links is set
It is set to inactive states.
S08 is less than or equal in all links corresponding to the difference of difference threshold the link for selecting highest priority from absolute value
Alternately link；
S09, link corresponding to minimum mean in alternative link and remaining link is defined as current communications link.
Specifically, it is active shapes by the state arranges value of link corresponding to minimum mean in alternative link and remaining link
State, the state of other links are arranged to inactive states.
When it is determined that after current communications link, starting silent timer；After silent timer expiry, S01 is re-executed.
Networking with reference to shown in Fig. 1, describe communication link provided in an embodiment of the present invention in detail and determine method.In Fig. 1, point
Zhi Jiedian protection wall equipment 102 passes through 3 link access networks, respectively SP1, SP2 and SP3, here, SP1, SP2 and SP3
Priority be：SP1>SP2>SP3；Communication link is SP2, and SP2 state is active states；
1st, the link-quality of loop detection SP1, SP2 and SP3 this 3 links of wall equipment 102 is protected；
2nd, when loop detection number reaches preset times, protection wall equipment 102 calculates the link matter of this 3 links respectively
The average of amount, for example, Q1、Q2And Q3；
Here, Q1、Q2And Q3Respectively less than quality threshold.
3rd, wall equipment 102 is protected to calculate Q1、Q2And Q3The difference of every two average, the absolute value of difference are respectively：Q12=| Q1-
Q2|, Q13=| Q1-Q3|, Q23=| Q2-Q3|；
If the 4th, Q12、Q13、Q23Respectively less than it is equal to difference threshold, protection wall equipment 102 then determines that communication link is still SP2,
SP2 state is arranged to active states, and SP1 and SP3 state are arranged to inactive states；
If the 5th, Q12、Q13、Q23Difference threshold is all higher than, protection wall equipment 102 is then by Q1、Q2And Q3Corresponding to middle minimum mean
Link is defined as current communications link, for example, Q1It is minimum, it is determined that Q1Corresponding SP1 is current communications link, by SP1 state
It is arranged to active states, SP2 and SP3 state are arranged to inactive states；
If the 6th, Q12、Q13More than difference threshold, Q23Less than or equal to difference threshold, protection wall equipment 102 is then from Q23Corresponding institute
There are the SP2 alternately links that highest priority is selected in link SP2 and SP3；
Link corresponding to minimum mean in SP2 and remaining link SP1 is defined as current communications link, for example, SP1 is corresponding
Average Q1It is minimum, it is determined that SP1 is current communications link, and SP1 state is arranged to the shape of active states, SP2 and SP3
State is arranged to inactive states.
It should be noted that it is by IPsec (Internet Protocol between branch node and Centroid
Security, procotol safety) tunnel is communicated, it is, the network of the network equipment of branch node and Centroid
Equipment room, which is established, an a plurality of IPsec tunnels, that is, link mentioned above is IPsec links, the communication link of above-mentioned determination
For IPsec communication links.
Using above-described embodiment, the link-quality of each branch node of loop detection to the link of Centroid；When following
When ring detection times reach preset times, the average of the link-quality of each link detected is calculated respectively；Calculate every two
The difference of individual average；When the absolute value of each difference, which is respectively less than, is equal to difference threshold, illustrate the link-quality of multilink
Average is same or like, then refusal redefines communication link, and former communication link is set into current communications link.So, effectively
Ground avoid the link-quality of multilink average it is same or like when link concussion, improve branch node and centromere
Communication quality between point.
With reference to figure 4, Fig. 4 is a kind of structural representation of communication link determining device provided in an embodiment of the present invention, application
In the network equipment of branch node, the device includes：
Probe unit 401, the link-quality for each branch node of loop detection to the link of Centroid；
First computing unit 402, for when loop detection number reaches preset times, calculate respectively detect it is each
The average of the link-quality of bar link；
Second computing unit 403, for calculating the difference of each two average；
Determining unit 404, for when each difference absolute value be respectively less than be equal to difference threshold when, former communication link is true
It is set to current communications link.
In one embodiment of the invention, determining unit 404, can be also used for：
When the absolute value of each difference is all higher than difference threshold, link corresponding to minimum mean is defined as present communications
Link.
In one embodiment of the invention, determining unit 404, can be also used for：
When the absolute value of each difference is not all higher than difference threshold, the difference pair of difference threshold is less than or equal to from absolute value
The link alternately link of highest priority is selected in all links answered；
Link corresponding to minimum mean in alternative link and remaining link is defined as current communications link；Remaining link bag
Include the link in addition to all links corresponding to absolute value is less than or equal to the difference of difference threshold.
In one embodiment of the invention, the second computing unit 403, specifically can be used for：
Calculate the difference that each two is less than or equal to the average of quality threshold；
Determining unit 404, specifically can be used for：
It is less than or equal to matter equal to average corresponding to difference threshold and former communication link when the absolute value of each difference is respectively less than
When measuring threshold value, then former communication link is defined as current communications link.
In one embodiment of the invention, determining unit 404, can be also used for：
It is more than quality threshold equal to average corresponding to difference threshold and former communication link when the absolute value of each difference is respectively less than
During value, the link of highest priority in link corresponding to the average less than or equal to quality threshold is defined as current communications link.
Using above-described embodiment, the link-quality of each branch node of loop detection to the link of Centroid；When following
When ring detection times reach preset times, the average of the link-quality of each link detected is calculated respectively；Calculate every two
The difference of individual average；When the absolute value of each difference, which is respectively less than, is equal to difference threshold, illustrate the link-quality of multilink
Average is same or like, then refusal redefines communication link, and former communication link is set into current communications link.So, effectively
Ground avoid the link-quality of multilink average it is same or like when link concussion, improve branch node and centromere
Communication quality between point.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for device
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of communication link determines method, it is characterised in that applied to the network equipment of branch node, methods described includes：
Link-quality of each branch node of loop detection to the link of Centroid；
When loop detection number reaches preset times, the average of the link-quality of each link detected is calculated respectively；
Calculate the difference of each two average；
When the absolute value of each difference, which is respectively less than, is equal to difference threshold, former communication link is defined as current communications link.
2. according to the method for claim 1, it is characterised in that methods described also includes：
When the absolute value of each difference is all higher than the difference threshold, link corresponding to minimum mean is defined as present communications
Link.
3. according to claim 1 method, it is characterised in that methods described also includes：
When the absolute value of each difference is not all higher than the difference threshold, the difference of the difference threshold is less than or equal to from absolute value
The link alternately link of highest priority is selected in all links corresponding to value；
Link corresponding to minimum mean in the alternative link and remaining link is defined as current communications link；The remaining chain
Road includes the link in addition to all links corresponding to absolute value is less than or equal to the difference of the difference threshold.
4. according to the method described in claim any one of 1-3, it is characterised in that the step of the difference for calculating each two average
Suddenly, including：
Calculate the difference that each two is less than or equal to the average of quality threshold；
The absolute value when each difference is respectively less than when being equal to difference threshold, and former communication link is defined as into current communications link
The step of, including：
It is less than or equal to the matter equal to average corresponding to difference threshold and former communication link when the absolute value of each difference is respectively less than
When measuring threshold value, former communication link is defined as current communications link.
5. according to the method for claim 4, it is characterised in that methods described also includes：
It is more than the matter equal to average corresponding to the difference threshold and former communication link when the absolute value of each difference is respectively less than
When measuring threshold value, the link less than or equal to highest priority in link corresponding to the average of the quality threshold is defined as current logical
Believe link.
6. a kind of communication link determining device, it is characterised in that applied to the network equipment of branch node, described device includes：
Probe unit, the link-quality for each branch node of loop detection to the link of Centroid；
First computing unit, for when loop detection number reaches preset times, calculating each link detected respectively
Link-quality average；
Second computing unit, for calculating the difference of each two average；
Determining unit, for when the absolute value of each difference is respectively less than and is equal to difference threshold, former communication link being defined as working as
Preceding communication link.
7. device according to claim 7, it is characterised in that the determining unit, be additionally operable to：
When the absolute value of each difference is all higher than the difference threshold, link corresponding to minimum mean is defined as present communications
Link.
8. according to claim 7 device, it is characterised in that the determining unit, be additionally operable to：
When the absolute value of each difference is not all higher than the difference threshold, the difference of the difference threshold is less than or equal to from absolute value
The link alternately link of highest priority is selected in all links corresponding to value；
Link corresponding to minimum mean in the alternative link and remaining link is defined as current communications link；The remaining chain
Road includes the link in addition to all links corresponding to absolute value is less than or equal to the difference of the difference threshold.
9. according to the device described in claim any one of 6-8, it is characterised in that
Second computing unit, the difference for being less than or equal to the average of quality threshold specifically for calculating each two；
The determining unit, specifically for being corresponded to when the absolute value of each difference is respectively less than equal to difference threshold and former communication link
Average when being less than or equal to the quality threshold, former communication link is defined as current communications link.
10. device according to claim 9, it is characterised in that the determining unit, be additionally operable to：
It is more than the matter equal to average corresponding to the difference threshold and former communication link when the absolute value of each difference is respectively less than
When measuring threshold value, the link less than or equal to highest priority in link corresponding to the average of the quality threshold is defined as current logical
Believe link.
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| CN111130979A (en) * | 2019-12-09 | 2020-05-08 | 苏州浪潮智能科技有限公司 | Method and equipment for connecting branch node with central node in SDWAN (software development wide area network) scene |
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