CN103780474B - A kind of traffic engineering tunnel resource seizing method and device - Google Patents
A kind of traffic engineering tunnel resource seizing method and device Download PDFInfo
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- CN103780474B CN103780474B CN201410014864.9A CN201410014864A CN103780474B CN 103780474 B CN103780474 B CN 103780474B CN 201410014864 A CN201410014864 A CN 201410014864A CN 103780474 B CN103780474 B CN 103780474B
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Abstract
The present invention provides a kind of traffic engineering tunnel resource seizing method and device, and methods described includes：When setting up new TE tunnel of traffic engineering, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority, the preempting priority of the plurality of traffic engineering tunnel is then obtained, wherein described preempting priority is used for representing that the importance that traffic engineering tunnel carries business, the high traffic engineering tunnel of preempting priority carry the importance of business and be less than the importance that the low traffic engineering tunnel of preempting priority carries business；According to the sequence of preempting priority, the traffic engineering tunnel for needing to be preempted is selected from the plurality of traffic engineering tunnel, the new traffic engineering tunnel is set up to utilize the traffic engineering tunnel being preempted.The present invention can avoid the problem that the existing blindness to same priority traffic engineering tunnel is present when seizing.
Description
Technical field
The present invention relates to networking technology area, more particularly to a kind of traffic engineering tunnel resource seizing method and device.
Background technology
Network congestion be affect backbone network performance main cause, generally using TE (Traffic Engineering,
Traffic engineering) come solve due to load imbalance institute caused by network congestion.MPLS(Multi-Protocol Label
Switching, multiprotocol label switching) TE technology is combined with the tunneling technique of MPLS and TE, and which is by being established to specify
The tunnel in path carries out resource reservation, and network traffics can be made to get around congested node, the purpose of balance network traffic is reached.Wherein,
When setting up traffic engineering tunnel, if the path for meeting desire bandwidth requirement cannot be found, the traffic engineering tunnel having built up can be removed, to take
The bandwidth resources of the traffic engineering tunnel release of the dismounting, processing mode when this traffic engineering tunnel is set up are known as seizing；Meanwhile, each TE
Tunnel, when setting up, can be that each traffic engineering tunnel distributes a tunnel priority by user, and the scope of the priority is 0～7, numerical value
More little then priority is higher.When new traffic engineering tunnel is set up, the traffic engineering tunnel that has set up is if desired seized, it is necessary to based on the user
The priority of distribution is seized, the low traffic engineering tunnel of preferential preempting priority.
At present, new traffic engineering tunnel is being set up, when needing to seize the traffic engineering tunnel of same priority, due to the TE tunnels that seizes
The priority in road is identical, and therefore, prior art generally carries out seizing for blindness, i.e., from the traffic engineering tunnel of same priority, random
One or more traffic engineering tunnels are seized, and this preempt-mode can have a strong impact on the reliability that traffic engineering tunnel carries business.Referring to Fig. 1,
The networking of router R2, R3, R4, R5 and R6, the bandwidth of path A, path B and path C are 30M.Three are set up from router R2
Traffic engineering tunnel of the bar to a width of 30M of band of router R6, path is respectively R2->R3->R6、R2->R4->R6、R2->R5->R6, three
The priority of bar traffic engineering tunnel is 7.When new traffic engineering tunnel that the priority for creating a width of 30M of a band again is 6 is needed, due to
All path bandwidths between router R2 to router R6 are all occupied, so needing to be less than the new TE tunnels from priority
Seized in the traffic engineering tunnel in road, that is, need to be seized in three traffic engineering tunnels for 7 being from above-mentioned priority.Prior art exists
When seizing to three priority identical traffic engineering tunnels from router R2 to router R6, three traffic engineering tunnels can be arbitrarily removed
In one, the bandwidth after making tunnel be removed meets the bandwidth requirement in new tunnel, to realize the foundation of new traffic engineering tunnel.This
During individual, three tunnels may not necessarily all in the business of carrying out transmission, and the traffic engineering tunnel that arbitrarily seizes possibly is entering industry
The tunnel of business transmission, can so have a strong impact on the reliability and stability of tunnel traffic transmission.
In summary it can be seen, prior art is if desired carried out to the traffic engineering tunnel of same priority during traffic engineering tunnel foundation
When seizing, exist and blindly seize, and the randomness that this blindness is seized, the carrying business of traffic engineering tunnel is easily affected, TE is reduced
Tunnel carries the reliability of business.
Content of the invention
In view of this, the present invention provides a kind of traffic engineering tunnel resource seizing method and device, can avoid existing to same
The problem that the blindness of priority traffic engineering tunnel is present when seizing.
On the one hand, the present invention provides a kind of traffic engineering tunnel resource seizing method, is applied on the network equipment, the side
Method includes：
When setting up new TE tunnel of traffic engineering, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority, obtain
The preempting priority of the plurality of traffic engineering tunnel is taken, wherein described preempting priority is used for representing that traffic engineering tunnel carries the important of business
Property, the high traffic engineering tunnel of preempting priority carries the importance of business and is less than the important of the low traffic engineering tunnel carrying business of preempting priority
Property；
According to the sequence of preempting priority, the traffic engineering tunnel for needing to be preempted is selected from the plurality of traffic engineering tunnel, with
The new traffic engineering tunnel is set up using the traffic engineering tunnel being preempted.
On the other hand, the present invention provides a kind of traffic engineering tunnel resource and seizes device, is applied on the network equipment, described
Device includes：
Priority acquisition module, for setting up during new TE tunnel of traffic engineering, if need to be from multiple TE tunnels of same priority
Traffic engineering tunnel being seized in road, then obtaining the preempting priority of the plurality of traffic engineering tunnel, wherein described preempting priority is used for representing TE
Tunnel carries the importance of business, and the high traffic engineering tunnel of preempting priority carries the importance of business and is less than the low TE of preempting priority
Tunnel carries the importance of business；
Tunnel selecting module, for the sequence according to preempting priority, selects to need from the plurality of traffic engineering tunnel
The traffic engineering tunnel being preempted, sets up the new traffic engineering tunnel to utilize the traffic engineering tunnel being preempted.
From above technical scheme, technical solution of the present invention during traffic engineering tunnel foundation, to the multiple of same priority
When traffic engineering tunnel is seized, seized by the preempting priority based on each traffic engineering tunnel, so as to avoid blindly seizing, can
Effectively improve the reliability that traffic engineering tunnel carries business.
Description of the drawings
Fig. 1 is the schematic diagram of traffic engineering tunnel in route networking in prior art；
Fig. 2 is the flow chart of the traffic engineering tunnel resource seizing method that the embodiment of the present invention one is provided；
Fig. 3 is the schematic flow sheet of the traffic engineering tunnel resource seizing method that the embodiment of the present invention two is provided；
Fig. 4 is the schematic flow sheet of the traffic engineering tunnel resource seizing method that the embodiment of the present invention three is provided；
Fig. 5 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention four is provided seizes device；
Fig. 6 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention five is provided seizes device；
Fig. 7 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention six is provided seizes device；
Fig. 8 is the hardware specific implementation structural representation that the traffic engineering tunnel resource that the embodiment of the present invention seven is provided seizes device.
Specific embodiment
The present invention is further illustrated with reference to specific embodiment.
In view of prior art is during traffic engineering tunnel foundation, same priority traffic engineering tunnel is carried out blindly to seize existing asking
Topic, embodiment of the present invention technical scheme, when the multiple traffic engineering tunnels to same priority are seized, can be according to the plurality of traffic engineering tunnel
Preempting priority seized.To be illustrated with instantiation below.
Fig. 2 is the flow chart of the traffic engineering tunnel resource seizing method that the embodiment of the present invention one is provided.The embodiment of the present invention one is carried
For a kind of traffic engineering tunnel resource seizing method, it is applied on the network equipment.Specifically, the network equipment can be router,
Switch etc..Referring to Fig. 2, embodiment of the present invention methods described may include following steps：
S1, when setting up new TE tunnel of traffic engineering, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority,
Obtain the preempting priority of the plurality of traffic engineering tunnel.
S2, according to preempting priority sequence, select to need the traffic engineering tunnel that is preempted from the plurality of traffic engineering tunnel,
The new traffic engineering tunnel is set up to utilize the traffic engineering tunnel being preempted.
Wherein, described preempting priority carries the importance of business specifically for representing traffic engineering tunnel, and preempting priority is high
, illustrate that the importance of traffic engineering tunnel carrying business is lower, preferentially can be preempted when seizing.Preempting priority is low, explanation
The importance that traffic engineering tunnel carries business is higher, finally can be preempted when seizing.Business importance height is carried so as to can ensure that
Traffic engineering tunnel will not seizing by blindness, can improve traffic engineering tunnel carry business reliability.
As each traffic engineering tunnel is when setting up, a priority, and TE can be distributed by user's (being often referred to network manager)
The span of tunnel priority is usually 0～7, and the more little then priority of numerical value is higher.Therefore, when new traffic engineering tunnel is set up,
If currently without the bandwidth resources that can meet the newly-established traffic engineering tunnel path when, it is necessary to from priority be less than the new foundation
Seized in the traffic engineering tunnel of traffic engineering tunnel.Specifically, when seizing, newly-built traffic engineering tunnel can be higher than its priority to numerical priority value
The traffic engineering tunnel of setting up of numerical value is seized, i.e. the order according to numerical priority value from high to low, namely according to priority from low
The traffic engineering tunnel for selecting to need to seize is carried out to high order, meets new TE tunnels until selected traffic engineering tunnel is removed rear bandwidth
The bandwidth requirement in road, then remove to the traffic engineering tunnel of selection, set up the new traffic engineering tunnel；If priority is newly-established less than this
The bandwidth resources of all traffic engineering tunnels of the priority of traffic engineering tunnel cannot meet, then do not resettle the new tunnel.
Specifically, it is assumed that the numerical priority value of newly-built traffic engineering tunnel is 5, then be 7 and 6 foundation successively to numerical priority value
Traffic engineering tunnel is seized.If the traffic engineering tunnel of setting up that numerical priority value is 7 only has one, directly the traffic engineering tunnel is set as
The traffic engineering tunnel being preempted is needed, if the bandwidth whether bandwidth of the traffic engineering tunnel after judging to be preempted meets new traffic engineering tunnel will
Ask, if meeting the bandwidth requirement of new traffic engineering tunnel, remove the traffic engineering tunnel for needing and being preempted, set up the new traffic engineering tunnel.
If being unsatisfactory for the bandwidth requirement of new traffic engineering tunnel, need to be 6 to set up in numerical priority value again
Tunnel is seized, and the traffic engineering tunnel resource until seizing meets newly-built traffic engineering tunnel bandwidth, otherwise just seizes always, except non-priority is less than
The resource of all traffic engineering tunnels of newly-built traffic engineering tunnel cannot meet newly-built traffic engineering tunnel bandwidth and stop creating the new traffic engineering tunnel.Real
In the application of border, after can selecting all traffic engineering tunnels being preempted, then unification is removed, to set up new traffic engineering tunnel, or, also may be used
To select one, just removed, until the resource of all traffic engineering tunnels that removes meets the bandwidth needs of newly-built traffic engineering tunnel.
In practical application, when seizing, be 7 to set up traffic engineering tunnel if there is a plurality of numerical priority value, and need from
When seizing wherein one or more traffic engineering tunnels in the traffic engineering tunnel of a plurality of same priority, so that it may based on side described in the embodiment of the present invention
Case is being seized.Specifically, the traffic engineering tunnel of setting up that a plurality of numerical priority value is 7 can be set as that numerical priority value is 7
The first alternative tunnel group, the preempting priority in each tunnel in the first alternative tunnel group in the embodiment of the present invention, can be obtained, and
The traffic engineering tunnel for needing to be preempted is selected according to preempting priority order from high to low from the first alternative tunnel group.Namely
Say, when traffic engineering tunnel is seized, if desired seize same priority part traffic engineering tunnel when, can perform embodiment of the present invention scheme.
Specifically, as described above, when the traffic engineering tunnel that numerical priority value is 5 is set up, preferential preemptive priority value of series
For 7 traffic engineering tunnel, now, if numerical priority value is the tunnel resource sum of 7 all traffic engineering tunnels can not meet newly-built traffic engineering tunnel
When bandwidth needs, then embodiment of the present invention scheme can not be executed, but the traffic engineering tunnel that numerical priority value is 7 is all seized, and
Continue the traffic engineering tunnel that preemptive priority value of series is 6；If numerical priority value is the tunnel resource sum of 7 all traffic engineering tunnels being more than
When the bandwidth of newly-built traffic engineering tunnel needs, then need from the numerical priority value be 7 all traffic engineering tunnels in selected section traffic engineering tunnel, then
Executable embodiment of the present invention technical scheme, to carry out seizing for same priority traffic engineering tunnel based on preempting priority.
In the present embodiment, the priority in described tunnel refers to that user distributes to the priority of each traffic engineering tunnel, and robs and be dominant
When first level then refers to that traffic engineering tunnel is preempted, the priority that tunnel carries business importance is represented, preempting priority height can basis
Current traffic engineering tunnel carries service feature to determine.The height of preempting priority determines can be according to some characteristics in tunnel, such as
Duration is set up, keeps enabling duration, bandwidth availability ratio etc..
In sum, in the embodiment of the present invention, the preempting priority of the traffic engineering tunnel of same priority represents that traffic engineering tunnel carries business
Significance level, so, when seizing traffic engineering tunnel in the multiple traffic engineering tunnels to same priority, according to preempting priority from high to low
Order seize, preferentially traffic engineering tunnel low for significance level can be seized, so as to reducing when seizing or reducing counterweight
The impact of business to be carried, improves the reliability that traffic engineering tunnel carries business.
For ease of the understanding to embodiment of the present invention technical scheme, below by the important journey to carrying business based on traffic engineering tunnel
The difference of the acquisition modes of degree, comes to be described in further detail technical solution of the present invention respectively.
Fig. 3 is the schematic flow sheet of the traffic engineering tunnel resource seizing method that the embodiment of the present invention two is provided.This enforcement
Example in, the preempting priority of each traffic engineering tunnel of same priority can be determined according to traffic engineering tunnel bandwidth availability ratio, with set up new
Can be seized based on preempting priority during traffic engineering tunnel.Specifically, as shown in figure 3, the present embodiment method may include following steps：
S10, determined according to the height of tunnel bandwidth utilization rate same priority each traffic engineering tunnel preempting priority, wherein,
The preempting priority of the preempting priority of the low traffic engineering tunnel of the bandwidth availability ratio traffic engineering tunnel high higher than bandwidth availability ratio.
Wherein, tunnel bandwidth utilization rate just refers to the situation of traffic engineering tunnel bearer traffic, the low traffic engineering tunnel of bandwidth availability ratio
The business for being carried is just few, represents that the importance that the current traffic engineering tunnel carries business is low, and therefore setting its preempting priority will
The preempting priority of the traffic engineering tunnel high higher than bandwidth availability ratio, when seizing, preferentially can be seized, it is to avoid bandwidth availability ratio is high
Traffic engineering tunnel blindly seized.
Specifically, when the present embodiment is realized, institute's cunicular bandwidth in the whole network with equal priority can be used
Situation carries out real-time monitoring statistics, to obtain the preempting priority of the traffic engineering tunnel with equal priority.Wherein, preempting priority
A numerical value can be given according to the priority respectively, and conventionally the numerical value of imparting high for priority can be less than
The low numerical value of priority, and the numerical range of priority can be in default value scope, such as between 0-5, and numerical priority value is got over
Low, then can represent that priority is higher, this is also just directly proportional to bandwidth availability ratio.It will be understood by those in the art that the numerical value model
Enclose and specifically can be determined with the quantity of the traffic engineering tunnel of same priority, this reality according to the quantity set of traffic engineering tunnel in network
Apply example not to be limited.
By the preempting priority of the traffic engineering tunnel of above-mentioned real-time detection same priority, occurring to seize same priority tunnel
During situation, it is possible to selected according to the dynamic preempting priority, solve the problems, such as that tunnel bandwidth resource is blindly seized,
The reliability of business is carried so as to improve traffic engineering tunnel.
In practical application, determine tunnel bandwidth availability ratio, with obtain tunnel preempting priority when, specifically can be with root
According to the service condition of default nearest interval of time inner tunnel bandwidth, the rank of seizing in each bar same priority tunnel is entered
Mobile state is adjusted.Tunnel bandwidth utilization rate is higher, illustrate this tunnel normally carry business effective time longer, carry business
More important, should more keep resource and not be preempted, the priority level being preempted is lower, can give relatively low priority, instead
It, can give higher priority, to be preferentially preempted.
Assume have two same priority tunnel tu1 and tu2, state to be UP in existing network, by detecting each tunnel in 1 hour
Bandwidth usage after, it is found that tu1 does not have flow not carry business through namely, and tu2 be to expire bandwidth stream always
Measure the business through namely carrying expected planning.In such a scenario, although user (network manager) is tu1 and tu2
The priority of configuration is identical, but from from the aspect of the reliability of the business of carrying, it is evident that should preferentially remove bandwidth utilization rate
Low tu1, illustrates that tu2 carries the importance that the importance of business carries business higher than tu1, then the preempting priority of tu1 should height
Preempting priority in tu2.
S20, when setting up new traffic engineering tunnel, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority, obtaining should
The preempting priority of multiple traffic engineering tunnels.
Specifically, when newly-established traffic engineering tunnel needs to carry out traffic engineering tunnel to seize, and need to seize with same priority
During traffic engineering tunnel, then can obtain the preempting priority of each traffic engineering tunnel of the same priority.
When implementing, as described in embodiment one, when new traffic engineering tunnel is set up, it is assumed that the priority number of the newly-built traffic engineering tunnel
It is worth for 5, then needs to seize from the traffic engineering tunnel that numerical priority value is 6 and 7, and preferential preemptive priority value of series is 7 traffic engineering tunnel,
If now, numerical priority value be 7 traffic engineering tunnel for multiple, and their tunnel resource sums more than new traffic engineering tunnel bandwidth when, then
Illustrate, need part traffic engineering tunnel is seized in the plurality of traffic engineering tunnel, now, it is possible to execute this step.
S30, according to preempting priority sequence, select to need the traffic engineering tunnel that is preempted from the plurality of traffic engineering tunnel,
The new traffic engineering tunnel is set up to utilize the traffic engineering tunnel being preempted.
As can be seen that due to seize same priority traffic engineering tunnel when, the low traffic engineering tunnel of preferential bandwidth-hogging utilization rate, this
Sample, can be prevented effectively from rob when existing blindness is seized and account for the high traffic engineering tunnel of bandwidth availability ratio, so as to effectively improve TE tunnels
Road carries the reliability of business, it is to avoid to arbitrarily seizing for important traffic engineering tunnel.
Further, in this specific embodiment, when described step S30 is implemented, it is also contemplated that traffic engineering tunnel currently whether there is
Business is specifically may include being seized：
S301, obtain from the plurality of traffic engineering tunnel currently without flow pass through traffic engineering tunnel.
Specifically, in the present embodiment, the traffic engineering tunnel that passes through currently without flow can be stored in table Ln.Table Ln can be
Carry out being set up when traffic engineering tunnel is seized；Or networking has built up when setting up and carries out real-time update, only TE is being carried out
When tunnel is seized, just it is called.And table Ln is only set up to multiple traffic engineering tunnels of same priority.
Certainly, when the present embodiment is implemented, it would however also be possible to employ other modes come distinguish currently without flow pass through TE tunnels
Road and currently have flow pass through traffic engineering tunnel, such as by additional for the traffic engineering tunnel that passes through currently without flow without flow mark etc..
S302, according to preempting priority sequence, from all traffic engineering tunnels that passes through currently without flow select needs
The traffic engineering tunnel being preempted.
When implementing, step S302 is concretely：
Judge whether the bandwidth sum of all traffic engineering tunnels that passes through currently without flow meets the band for setting up the new traffic engineering tunnel
Wide need, be the sequence then according to preempting priority, select to need from all traffic engineering tunnels that passes through currently without flow by
The traffic engineering tunnel that seizes, otherwise, using all traffic engineering tunnels that passes through currently without flow as the traffic engineering tunnel being preempted, and is dominant according to robbing
The sequence of first level, continues the TE for selecting to need to be preempted from the plurality of traffic engineering tunnel in the traffic engineering tunnel for currently having flow to pass through
Tunnel.
Specifically, the traffic engineering tunnel for needing to be preempted can be selected from table Ln successively according to the sequence of preempting priority,
If in table Ln all tunnels be still unsatisfactory for after being all selected as needing the traffic engineering tunnel being preempted newly-built traffic engineering tunnel bandwidth will
Ask, then continue the traffic engineering tunnel for selecting to need to be preempted from the traffic engineering tunnel for currently having flow to pass through.
Similarly, the traffic engineering tunnel that also can be currently had flow to pass through is stored in table Ly.Table Ly can carry out traffic engineering tunnel
Set up when seizing；Or this networking has built up when setting up and carries out real-time update, only seize carrying out traffic engineering tunnel
When, just it is called.To currently have seize in the traffic engineering tunnel of flow when, can be suitable according to the height of preempting priority
Sequence, selects the traffic engineering tunnel for needing to be preempted successively from table Ly.
As can be seen that select to need the traffic engineering tunnel being preempted from the traffic engineering tunnel that passes through currently without flow by preferential, when
Front without flow through traffic engineering tunnel be selected as needing the bandwidth that can not still meet newly built tunnels after the traffic engineering tunnel being preempted
During requirement, then the traffic engineering tunnel for carrying out selecting to need to be preempted from the traffic engineering tunnel for currently having flow to pass through.Can so carry out
When traffic engineering tunnel is seized, the impact to carrying business is preferably avoided, the reliability that traffic engineering tunnel carries business is improve.
When the present embodiment is implemented, also can be when needing the traffic engineering tunnel to same priority to seize, further according to statistics
Each traffic engineering tunnel bandwidth availability ratio, to obtain the preempting priority of traffic engineering tunnel in real time, rather than set up in advance or obtain and seize
Priority, so, as long as equipment counts the bandwidth availability ratio of each traffic engineering tunnel, simply seize need when, then in real time
The preempting priority for determining traffic engineering tunnel according to bandwidth availability ratio.
Fig. 4 is the schematic flow sheet of the traffic engineering tunnel resource seizing method that the embodiment of the present invention three is provided.With above-mentioned
Unlike embodiment illustrated in fig. 3 technical scheme, the present embodiment can determine which based on the time span of tunnel holding enable and hold
The importance of load business, typically, traffic engineering tunnel enable time is longer, and the importance which carries business is also higher, it is possible to
Will be relatively low for its preempting priority setting, on the contrary then longer.Specifically, as shown in figure 4, the present embodiment method may include following step
Suddenly：
S100, the length of the time for keeping enabling according to tunnel determine the preempting priority of each traffic engineering tunnel of same priority,
Wherein, priority of the preempting priority of the traffic engineering tunnel of holding enable time length less than the traffic engineering tunnel for keeping enable time short.
Specifically, in the present embodiment business carried by the short traffic engineering tunnel of enable time is few, illustrates that the traffic engineering tunnel carries industry
The importance of business will be than relatively low, then its preempting priority can arrange relatively low.So, the holding that can count each traffic engineering tunnel is enabled
Time, and according to the length of enable time is kept, determine the preempting priority of corresponding traffic engineering tunnel, keep enable time longer
Traffic engineering tunnel, its preempting priority can arrange lower, represent its carry business importance higher, finally can be preempted.
When new traffic engineering tunnel is set up, such as need to be seized from same priority traffic engineering tunnel, then according to same priority TE tunnels
The sequence of the preempting priority in road is seized successively, to guarantee that tool carries that business importance is higher is finally preempted,
To improve the reliability that traffic engineering tunnel carries business.
When implementing, can according to tunnel keep enable time length in the whole network same priority traffic engineering tunnel important
Property, namely preempting priority carries out real-time adjustment, when occurring to seize same priority tunnel situation, to be dominant according to robbing
First level height carrying out seizing for traffic engineering tunnel, to solve the problems, such as that existing traffic engineering tunnel bandwidth resources are blindly seized, so as to improve
Traffic engineering tunnel carries the reliability of business.
S200, when setting up new traffic engineering tunnel, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority, obtaining should
The preempting priority of multiple traffic engineering tunnels.
S300, according to preempting priority sequence, select to need the traffic engineering tunnel that is preempted from the plurality of traffic engineering tunnel,
The new traffic engineering tunnel is set up to utilize the traffic engineering tunnel being preempted.
In the present embodiment, the length of enable time is kept based on tunnel determining the preempting priority of traffic engineering tunnel, to embody
Traffic engineering tunnel carries the importance of business, when traffic engineering tunnel is seized, can preferentially seize the traffic engineering tunnel for keeping enable time short, Ye Jicheng
The relatively low tunnel of business importance is carried, and the reliability of business is carried so as to traffic engineering tunnel can be improved.
When the present embodiment is implemented, the length of the time for enabling is kept to determine according to tunnel same priority traffic engineering tunnel same
During the preempting priority of each traffic engineering tunnel of priority, variable dynamic adjustment number of times frequency and dynamic priority can be introduced
Ap is improving the acquisition precision of preempting priority.It is described as follows：
In above-mentioned steps S100, the length of the time kept enabling according to tunnel determines robbing for each traffic engineering tunnel of same priority
Priority is accounted for, specifically be may include：
The dynamic priority of each traffic engineering tunnel of same priority is obtained according to formula ap=upTime (1+Delta) * downtime
Level ap, wherein upTime keep the total duration for enabling, downTime to keep the total duration for going enable, Delta for tunnel for tunnel
For time Convergence coefficient, when tunnel keeps the total duration for enabling to reach default maximum, the ap in each tunnel, upTime,
DownTime is initialized as default value；Wherein, it is to ensure that priority is divided to be unlikely to meticulous, ap can be retained two after decimal,
I.e. 0.01, in order to the determination of follow-up priority.
Tunnel is kept to set up the dynamic adjustment that state total duration reaches the number of times of default maximum as each traffic engineering tunnel
Number of times frequency；Wherein, default maximum can be set as needed, such as 100 hours, or other suitable numerical value.
Dynamic is adjusted number of times and ap as the priority parameters of each traffic engineering tunnel.
Correspondingly, in above-mentioned steps S300, according to the sequence of preempting priority, select to need from multiple traffic engineering tunnels
The traffic engineering tunnel being preempted, specifically may include：
According to dynamic adjustment number of times order from big to small, the plurality of traffic engineering tunnel is grouped, and preferential from dynamic tune
In the little TE packets of whole number of times, according to the traffic engineering tunnel that ap orders from small to large select to need to be preempted.
Specifically, above-mentioned steps S300 are in concrete execution, it may include following steps：
S21, using each traffic engineering tunnel of same priority as the first alternative tunnel group, and compare each in the first alternative tunnel group
The dynamic adjustment number of times of traffic engineering tunnel, selects the minimum traffic engineering tunnel of dynamic adjustment number of times as the tunnel in the second alternative tunnel group
Road, and delete from the first alternative tunnel group.
Specifically, the first alternative tunnel Zu Zhongge tunnels can be stored in table L1, each tunnel in comparison sheet L1
Dynamic adjustment number of times, selects the minimum traffic engineering tunnel of dynamic adjustment number of times as the tunnel in the second alternative tunnel group, and stores
To in table L2.
If the only one of which tunnel in the second alternative tunnel group, or each tunnel resource is when being preempted, and is still unsatisfactory for
Newly-built traffic engineering tunnel bandwidth needs, then to second alternative group in all tunnels seize, and continue executing with step S21, continue to rob
New traffic engineering tunnel is accounted for, till meeting needs, otherwise, illustrates to only need to from selected section tunnel in the second alternative tunnel group,
Therefore step S22 can perform.
There are multiple traffic engineering tunnels in S22, the second alternative tunnel group, continue to compare each traffic engineering tunnel in the second alternative tunnel group
Ap values, select the minimum traffic engineering tunnel of ap values as the 3rd alternative tunnel group.
Specifically, if table L2 has multiple tunnels, and when seizing, it is only necessary to seize part tunnel, therefore can continue to compare
The ap values in more each tunnel, select the minimum traffic engineering tunnel of ap values as the tunnel in the 3rd alternative tunnel group, and store table L3
In.
If the only one of which tunnel in the 3rd alternative tunnel group, or each tunnel resource is when being preempted, and is still unsatisfactory for
Newly-built traffic engineering tunnel bandwidth needs, then to the 3rd alternative group in all tunnels seize, and continue executing with step S22, continue to rob
New traffic engineering tunnel is accounted for, till meeting needs, otherwise, illustrates to only need to from selected section tunnel in the 3rd alternative tunnel group,
Therefore step S23 can perform.
There are multiple traffic engineering tunnels in S23, the 3rd alternative tunnel, then continue the bandwidth value in more each 3rd alternative tunnel, according to
Bandwidth value order from small to large, selects the traffic engineering tunnel being preempted.
As can be seen that when tunnel is selected, being to adjust number of times and dynamic priority based on dynamic, namely preempting priority being high
Low being selected, so as to can preferentially seize the tunnel of high preempting priority.
Similarly, when the present embodiment is implemented, also can when needing the traffic engineering tunnel to same priority to seize, according to
In advance the length of the holdings enable time of the traffic engineering tunnel of statistics to be determining preempting priority, and according to the preempting priority of determination come
Seized.
During each embodiment technical scheme of the invention described above is particularly applicable to the foundation of MPLS traffic engineering tunnels, tunnel
Process is specifically set up same or like with conventional art, here is not being repeated.
Fig. 5 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention four is provided seizes device.Correspond to above-mentioned side
Method, as shown in figure 5, the embodiment of the present invention four provides a kind of traffic engineering tunnel resource seizes device, is applied on the network equipment.
Specifically, referring to Fig. 5, described device 5 includes：
Priority acquisition module 51, for setting up during new TE tunnel of traffic engineering, if need to be from multiple TE of same priority
Traffic engineering tunnel being seized in tunnel, then obtaining the preempting priority of the plurality of traffic engineering tunnel, wherein described preempting priority is used for representing
Traffic engineering tunnel carries the importance of business, and the importance that the high traffic engineering tunnel of preempting priority carries business is low less than preempting priority
Traffic engineering tunnel carries the importance of business.
Tunnel selecting module 52, for the sequence according to preempting priority, selects to need from the plurality of traffic engineering tunnel
Traffic engineering tunnel to be preempted, sets up the new traffic engineering tunnel to utilize the traffic engineering tunnel being preempted.
Device provided in an embodiment of the present invention 5 implements the explanation that process can be found in said method embodiment, here
Repeat no more.
Fig. 6 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention five is provided seizes device.Correspond to above-mentioned side
Method embodiment two, on the basis of shown in above-mentioned Fig. 5, as shown in fig. 6, in the device of the offer of the embodiment of the present invention five, except above-mentioned
Priority acquisition module 51 and tunnel selecting module 52 outside, also include the first Priority Determination module 53, for according to tunnel
The height of bandwidth availability ratio determines the preempting priority of each traffic engineering tunnel of same priority, wherein, the low traffic engineering tunnel of bandwidth availability ratio
Preempting priority higher than the high traffic engineering tunnel of bandwidth availability ratio preempting priority.
In the present embodiment, the preempting priority of traffic engineering tunnel can be determined according to bandwidth availability ratio, to represent that traffic engineering tunnel is carried
The importance of business, specifically refers to the explanation of said method embodiment two.
In the present embodiment, as shown in fig. 6, described tunnel selecting module 52 specifically may include：
First sub- select unit 521, for obtaining the traffic engineering tunnel that passes through currently without flow from the plurality of traffic engineering tunnel；
Second sub- select unit 522, for the sequence according to preempting priority, all from passed through currently without flow
The traffic engineering tunnel for needing to be preempted is selected in traffic engineering tunnel.
Further, the second described sub- select unit 522 is particularly used in：
Judge whether the bandwidth sum of all traffic engineering tunnels that passes through currently without flow meets and set up the new traffic engineering tunnel
Bandwidth needs, and is the sequence then according to preempting priority, selects needs from all traffic engineering tunnels that passes through currently without flow
The traffic engineering tunnel being preempted, otherwise, using all traffic engineering tunnels that passes through currently without flow as the traffic engineering tunnel being preempted, and according to
The sequence of preempting priority, currently have from the plurality of traffic engineering tunnel flow pass through traffic engineering tunnel in continue selection need by
The traffic engineering tunnel that seizes.
Fig. 7 is the structural representation that the traffic engineering tunnel resource that the embodiment of the present invention six is provided seizes device.Correspond to above-mentioned side
Method embodiment three, on the basis of shown in above-mentioned Fig. 5, as shown in fig. 7, in the device of the offer of the embodiment of the present invention six, except above-mentioned
Priority acquisition module 51 and tunnel selecting module 52 outside, may also include the second Priority Determination module 54, for according to tunnel
Road keeps the length of the time for enabling to determine the preempting priority of each traffic engineering tunnel of same priority, wherein, keeps enable time short
Traffic engineering tunnel preempting priority higher than keep enable time length traffic engineering tunnel priority.
In the present embodiment, the preempting priority of traffic engineering tunnel can be determined according to the length of traffic engineering tunnel enable time, to represent
Traffic engineering tunnel carries the importance of business, specifically refers to the explanation of said method embodiment three.
In the present embodiment, as shown in fig. 7, the second described Priority Determination module 54 specifically may include：
Dynamic priority determining unit 541, same for being obtained according to formula ap=upTime (1+Delta) * downtime
The dynamic priority ap of each traffic engineering tunnel of priority, wherein upTime are the total duration that tunnel keeps enabling, and downTime is tunnel
Road keeps the total duration for going to enable, and Delta is time Convergence coefficient, and tunnel keeps the total duration for enabling to reach default maximum
When, ap, upTime, the downTime in each tunnel are initialized as default value；
Adjustment number of times determining unit 542, reaches the secondary of default maximum for tunnel holding is set up state total duration
Dynamic adjustment number of times of the number as each traffic engineering tunnel；
Priority parameters determining unit 543, for joining dynamic adjustment number of times and ap as the priority of each traffic engineering tunnel
Number；
Accordingly, described tunnel selecting module 52, is particularly used in：
According to dynamic adjustment number of times order from big to small, the plurality of traffic engineering tunnel is grouped, and preferential from described
In the little TE packets of dynamic adjustment number of times, according to the traffic engineering tunnel that ap orders from small to large select to need to be preempted.
The present embodiment can be found in the invention described above embodiment of the method in the concrete preemption processes to same priority traffic engineering tunnel
Explanation.
Fig. 8 is the hardware specific implementation structural representation that the traffic engineering tunnel resource that the embodiment of the present invention seven is provided seizes device.
Method shown in the executable embodiments of the present invention of the present embodiment device, specifically, as shown in figure 8, the device includes：Control
Device (CPU), and the memorizer and other hardware of controller connection, wherein, storage in memorizer has program or instruction, CPU
Can pass through to read the program in memorizer or instruction, execute corresponding operation, other hardware can be specifically communication interface etc.,
Can receive or send message.
Specifically, CPU can perform following operation by reading program or instruction in memorizer：
CPU passes through reading program or instruction, when setting up new TE tunnel of traffic engineering, if need to be from multiple TE of same priority
Traffic engineering tunnel being seized in tunnel, then obtaining the preempting priority of the plurality of traffic engineering tunnel, wherein described preempting priority is used for representing
Traffic engineering tunnel carries the importance of business, and the importance that the high traffic engineering tunnel of preempting priority carries business is low less than preempting priority
Traffic engineering tunnel carries the importance of business.
CPU, is selected from the plurality of traffic engineering tunnel according to the sequence of preempting priority by reading program or instruction
The traffic engineering tunnel being preempted is needed, and the new traffic engineering tunnel is set up to utilize the traffic engineering tunnel being preempted.
Further, in a kind of real-time mode, CPU, can also be according to tunnel bandwidth profit also by reading program or instruction
Determine the preempting priority of each traffic engineering tunnel of same priority with the height of rate, wherein, the low traffic engineering tunnel of bandwidth availability ratio is seized
The preempting priority of the priority traffic engineering tunnel high higher than bandwidth availability ratio.
Further, CPU is by reading program or instruction, according to the sequence of preempting priority, from the plurality of
Select to need the traffic engineering tunnel that is preempted in traffic engineering tunnel, to utilize the traffic engineering tunnel being preempted specifically may be used setting up the new traffic engineering tunnel
Including：
The traffic engineering tunnel that passes through currently without flow is obtained from the plurality of traffic engineering tunnel；
According to the sequence of preempting priority, from all traffic engineering tunnels that passes through currently without flow, needs are selected to be preempted
Traffic engineering tunnel.
Further, CPU passes through reading program or instruction, according to the sequence of preempting priority, from currently without stream
Select to need the traffic engineering tunnel being preempted specifically to may include in all traffic engineering tunnels that amount is passed through：
Judge whether the bandwidth sum of all traffic engineering tunnels that passes through currently without flow meets and set up the new traffic engineering tunnel
Bandwidth needs, and is the sequence then according to preempting priority, selects needs from all traffic engineering tunnels that passes through currently without flow
The traffic engineering tunnel being preempted, otherwise, using all traffic engineering tunnels that passes through currently without flow as the traffic engineering tunnel being preempted, and according to
The sequence of preempting priority, currently have from the plurality of traffic engineering tunnel flow pass through traffic engineering tunnel in continue selection need by
The traffic engineering tunnel that seizes.
Additionally, in another kind of specific embodiment, CPU can also pass through reading program or instruction, keep making according to tunnel
The length of the time of energy determines the preempting priority of each traffic engineering tunnel of same priority, wherein, the short traffic engineering tunnel of holding enable time
Preempting priority higher than keep enable time length traffic engineering tunnel priority.
Further, CPU reading programs or instruction, the length of the time kept enabling according to tunnel determine same priority
The preempting priority of each traffic engineering tunnel, specifically may include：
The dynamic priority of each traffic engineering tunnel of same priority is obtained according to formula ap=upTime (1+Delta) * downtime
Level ap, wherein upTime keep the total duration for enabling, downTime to keep the total duration for going enable, Delta for tunnel for tunnel
For time Convergence coefficient, when tunnel keeps the total duration for enabling to reach default maximum, the ap in each tunnel, upTime,
DownTime is initialized as default value；
Tunnel is kept to set up the dynamic adjustment that state total duration reaches the number of times of default maximum as each traffic engineering tunnel
Number of times；
Dynamic is adjusted number of times and ap as the priority parameters of each traffic engineering tunnel；
Correspondingly, CPU reading programs or instruction, according to the sequence of preempting priority, from the plurality of traffic engineering tunnel
The traffic engineering tunnel for needing to be preempted is selected, specifically be may include：
According to dynamic adjustment number of times order from big to small, the plurality of traffic engineering tunnel is grouped, and preferential from described
In the little TE packets of dynamic adjustment number of times, according to the traffic engineering tunnel that ap orders from small to large select to need to be preempted.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements that is done etc. are should be included within the scope of protection of the invention.
Claims (12)
1. a kind of traffic engineering tunnel resource seizing method, is applied on the network equipment, it is characterised in that methods described includes：
When setting up new TE tunnel of traffic engineering, if traffic engineering tunnel need to be seized from multiple traffic engineering tunnels of same priority, institute is obtained
The preempting priority of multiple traffic engineering tunnels is stated, wherein described preempting priority is used for representing the importance that traffic engineering tunnel carries business, robs
The importance for accounting for the high traffic engineering tunnel carrying business of priority is less than the importance that the low traffic engineering tunnel of preempting priority carries business；
According to the sequence of preempting priority, the traffic engineering tunnel for needing to be preempted is selected from the plurality of traffic engineering tunnel, to utilize
The traffic engineering tunnel being preempted is setting up the new traffic engineering tunnel.
2. method according to claim 1, it is characterised in that also include：
Height according to tunnel bandwidth utilization rate determines the preempting priority of each traffic engineering tunnel of same priority, wherein, bandwidth usage
The preempting priority of the preempting priority of the low traffic engineering tunnel of the rate traffic engineering tunnel high higher than bandwidth availability ratio.
3. method according to claim 2, it is characterised in that the sequence according to preempting priority, from described
Select to need the traffic engineering tunnel being preempted to include in multiple traffic engineering tunnels：
The traffic engineering tunnel that passes through currently without flow is obtained from the plurality of traffic engineering tunnel；
According to the sequence of preempting priority, the TE for needing to be preempted is selected from all traffic engineering tunnels that passes through currently without flow
Tunnel.
4. method according to claim 3, it is characterised in that the sequence according to preempting priority, from current
Select to need the traffic engineering tunnel being preempted to include in all traffic engineering tunnels that passes through without flow：
Judge whether the bandwidth sum of all traffic engineering tunnels that passes through currently without flow meets the bandwidth for setting up the new traffic engineering tunnel
Need, be the sequence then according to preempting priority, select to need to be robbed from all traffic engineering tunnels that passes through currently without flow
The traffic engineering tunnel for accounting for, otherwise, using all traffic engineering tunnels that passes through currently without flow as the traffic engineering tunnel being preempted, and according to seizing
The sequence of priority, continues to select needs to be preempted from the plurality of traffic engineering tunnel in the traffic engineering tunnel for currently having flow to pass through
Traffic engineering tunnel.
5. method according to claim 1, it is characterised in that also include：
The length of the time kept enabling according to tunnel determines the preempting priority of each traffic engineering tunnel of same priority, wherein, keeps
Priority of the preempting priority of the short traffic engineering tunnel of enable time higher than the traffic engineering tunnel for keeping enable time length.
6. method according to claim 5, it is characterised in that the length of the time kept enabling according to tunnel determines
The preempting priority of each traffic engineering tunnel of same priority, specifically includes：
The dynamic priority ap of each traffic engineering tunnel of same priority is obtained according to formula ap=upTime (1+Delta) * downtime,
Wherein upTime is the total duration that tunnel keeps enabling, and downTime is the total duration that tunnel keeps going to enable, and Delta is the time
Convergence coefficient, when tunnel keeps the total duration for enabling to reach default maximum, at the beginning of ap, upTime, the downTime in each tunnel
Begin to turn to default value；
Tunnel is kept to set up the dynamic adjustment number of times that state total duration reaches the number of times of default maximum as each traffic engineering tunnel；
Dynamic is adjusted number of times and ap as the priority parameters of each traffic engineering tunnel；
The sequence according to preempting priority, selects the traffic engineering tunnel for needing to be preempted, tool from the plurality of traffic engineering tunnel
Body includes：
According to dynamic adjustment number of times order from big to small, the plurality of traffic engineering tunnel is grouped, and preferential from the dynamic
In the little TE packets of adjustment number of times, according to the traffic engineering tunnel that ap orders from small to large select to need to be preempted.
7. a kind of traffic engineering tunnel resource seizes device, is applied on the network equipment, it is characterised in that described device includes：
Priority acquisition module, for setting up during new TE tunnel of traffic engineering, if need to be from multiple traffic engineering tunnels of same priority
Traffic engineering tunnel is seized, then obtains the preempting priority of the plurality of traffic engineering tunnel, wherein described preempting priority is used for representing traffic engineering tunnel
The importance of carrying business, the high traffic engineering tunnel of preempting priority carry the importance of business and are less than the low traffic engineering tunnel of preempting priority
The importance of carrying business；
Tunnel selecting module, for the sequence according to preempting priority, selects to need to be robbed from the plurality of traffic engineering tunnel
The traffic engineering tunnel for accounting for, sets up the new traffic engineering tunnel to utilize the traffic engineering tunnel being preempted.
8. device according to claim 7, it is characterised in that also include：
First Priority Determination module, for determining robbing for each traffic engineering tunnel of same priority according to the height of tunnel bandwidth utilization rate
Priority is accounted for, wherein, the preempting priority of the low traffic engineering tunnel of bandwidth availability ratio is higher than seizing for the high traffic engineering tunnel of bandwidth availability ratio
Priority.
9. device according to claim 8, it is characterised in that the tunnel selecting module includes：
First sub- select unit, for obtaining the traffic engineering tunnel that passes through currently without flow from the plurality of traffic engineering tunnel；
Second sub- select unit, for the sequence according to preempting priority, from all traffic engineering tunnels that passes through currently without flow
The middle traffic engineering tunnel for selecting to need to be preempted.
10. device according to claim 9, it is characterised in that the second sub- select unit specifically for：
Judge whether the bandwidth sum of all traffic engineering tunnels that passes through currently without flow meets the bandwidth for setting up the new traffic engineering tunnel
Need, be the sequence then according to preempting priority, select to need to be robbed from all traffic engineering tunnels that passes through currently without flow
The traffic engineering tunnel for accounting for, otherwise, using all traffic engineering tunnels that passes through currently without flow as the traffic engineering tunnel being preempted, and according to seizing
The sequence of priority, continues to select needs to be preempted from the plurality of traffic engineering tunnel in the traffic engineering tunnel for currently having flow to pass through
Traffic engineering tunnel.
11. devices according to claim 7, it is characterised in that also include：
Second Priority Determination module, for keeping the length of the time for enabling to determine each traffic engineering tunnel of same priority according to tunnel
Preempting priority, wherein, keep the preempting priority of the short traffic engineering tunnel of enable time higher than the TE tunnels for keeping enable time length
The priority in road.
12. devices according to claim 11, it is characterised in that second Priority Determination module includes：
Dynamic priority determining unit, for obtaining same priority according to formula ap=upTime (1+Delta) * downtime
The dynamic priority ap of each traffic engineering tunnel, wherein upTime are the total duration that tunnel keeps enabling, and downTime is that tunnel keeps going
The total duration of enable, Delta are time Convergence coefficient, when tunnel keeps the total duration for enabling to reach default maximum, each tunnel
Ap, upTime, the downTime in road is initialized as default value；
Adjustment number of times determining unit, reaches the number of times of default maximum as each for tunnel to be kept setting up state total duration
The dynamic adjustment number of times of traffic engineering tunnel；
Priority parameters determining unit, for dynamic to be adjusted number of times and ap as the priority parameters of each traffic engineering tunnel；
The tunnel selecting module, specifically for：
According to dynamic adjustment number of times order from big to small, the plurality of traffic engineering tunnel is grouped, and preferential from the dynamic
In the little TE packets of adjustment number of times, according to the traffic engineering tunnel that ap orders from small to large select to need to be preempted.
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| CN104283807B (en) * | 2014-09-17 | 2018-07-24 | 新华三技术有限公司 | A kind of traffic engineering tunnel method for building up and device |
| CN108337189B (en) * | 2018-01-29 | 2021-11-05 | 新华三技术有限公司 | Bandwidth scheduling method and device |
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