CN104518920A - Large-scale IP network flow monitoring method and device - Google Patents
Large-scale IP network flow monitoring method and device Download PDFInfo
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Abstract
The invention discloses a large-scale IP network flow monitoring method and device and belongs to the large-scale network monitoring technical field. The method comprises the following steps that: the bandwidth utilization rate of each link in N links in a network is acquired; the bandwidth utilization rates of the N links are sorted; broken lines for connecting coordinate points are obtained; and an equilibrium coefficient, namely, the ratio of an area enclosed by the broken lines and an equilibrium line to the area of a lower triangle, is determined according to the broken lines. With the large-scale IP network flow monitoring method and device of the invention adopted, an quantification indicator, namely the equilibrium coefficient, can be provided for a carrier-class IP network management system to evaluate multidirectional (province-to-province) network flow sharing equilibrium; a four-element monitoring matrix which is established based on the indicator can monitor and display available states, flow sharing situations and congestion situations of all circuits in the network, and the capability of the network management system to monitor network flow in a centralized manner can be greatly improved.
Description
Technical field
The present invention relates to catenet monitoring technique field, particularly a kind of Large IP Network flux monitoring method and device.
Background technology
In the operation maintenance of Large IP Network, the often flow direction change of the visible network traffics caused due to circuit or equipment fault, the flow of cause barrier paragraph carrying will be carried by other relevant links after network route restrains again.In addition, in the network capacity extension adjusting stage, the change of routing policy or network topology also will make intrinsic flow between node carry under different link group.Below either way just make network traffics redistribute between node and link, cause link bandwidth utilization rate change.Due to the node of catenet and number of links numerous, topological sum routing is complicated, therefore network operation administer and maintain personnel need badly a kind of can the method for flow distribution situation between each node in critic network on the whole, them are helped to find network traffics distribution Problems existing (as: flow distribution inequality or flow congestion) fast and effectively, to adjust in time.
Current IP network management system mainly passes through SNMP(Simple Network Management Protocol to network flow monitoring and management, Simple Network Management Protocol) agreement reading router mib (Management Information Database, management information base) library facilities port flow statistics, through MRTG, circuit flow is represented, show the utilance of each bar link bandwidth simultaneously.Attendant often needs all links recalled between two nodes to carry out artificial judgment when judging that whether flow is balanced, lacks effective quantitative evaluation means, have impact on maintenance efficiency and accuracy.
In the monitoring means of flow congestion, existing network management technology for unit, sends early warning by the link congestion thresholding that presets or equidirectional bandwidth overall utilization threshold value to flow congestion between node with single link between node or link group.Whether the subject matter of this mode has 2 points: one, do not consider the relation between single link utilance and link group bandwidth availability ratio, namely lack and judge uniformly bar link bearer flow each in link group.Such as, suppose in network due to IGP(Interior Gateway Protocol, Interior Gateway Protocol)/BGP(BorderGateway Protocol, Border Gateway Protocol) routing policy arranges and unreasonablely causes the flow distribution between the multilink of same direction unbalanced, although the overall bandwidth utilance of this direction link group is not high, but individual link flow is congested, the customer service quality be carried on this congestion link certainly will be impacted, therefore the unbalanced key point being only problem of flow distribution; Two, when network has fault to occur, network traffics will redistribute between residue node and link, if the flow diagram mode that network maintenance staff is still unit by link/link group is checked the change of flow and is affected situation in direction one by one, efficiency is very low, and this traditional approach cannot adapt to the requirement to network centralized monitor and rapid evaluation fault incidence.
Summary of the invention
The present inventor finds to have problems in above-mentioned prior art, and therefore proposes a kind of new technical scheme at least one problem in described problem.
An object of the present invention is to provide a kind of technical scheme for catenet traffic monitoring.
According to a first aspect of the invention, provide a kind of Large IP Network flux monitoring method, comprising:
Obtain the bandwidth availability ratio w of every bar link in N bar link in network
n;
The bandwidth availability ratio of described N bar link is carried out sequence and makes w
1<w
2< ... <w
n;
Obtain connection coordinate point
broken line, n=1 ...., N;
According to described broken line determination equalizing coefficient, the area that namely described broken line and equilibrium line surround accounts for the ratio of lower triangle area, and wherein, described equilibrium line is for passing through (0,0) and (1,1) straight line of putting, described lower triangle is with (0,0), (1,0), (1,1) triangle that is summit.
Alternatively, comprise according to described broken line determination equalizing coefficient: determine the area that intersects that described broken line and described equilibrium line surround; Namely described intersection area is obtained described equalizing coefficient divided by described lower leg-of-mutton area.
Alternatively, the method also comprises: described equalizing coefficient is prompted to monitoring side to carry out network traffics equilibrium judgement.
Alternatively, described equilibrium instruction is prompted to monitoring side to comprise: the figure comprising described equilibrium line and described broken line is shown to described monitoring side.
Alternatively, the method also comprises: determine congested circuit ratio, congested flow ratio and/or reference circuit number/current circuit number.
According to a further aspect in the invention, a kind of Large IP Network flow-monitoring device is provided, comprises:
Broadband utilance acquiring unit, for obtaining the bandwidth availability ratio w of every bar link in N bar link in network
n;
Broadband utilance sequencing unit, makes w for the bandwidth availability ratio of described N bar link is carried out sequence
1<w
2< ... <w
n;
Broken line coordinate acquiring unit, for obtaining connection coordinate point
broken line;
Equalizing coefficient determining unit, for according to described broken line determination equalizing coefficient, the area that namely described broken line and equilibrium line surround accounts for the ratio of lower triangle area, wherein, described equilibrium line is for passing through (0,0) and (1,1) straight line of putting, described lower triangle is with (0,0), (1,0), (1,1) triangle that is summit.
Alternatively, equalizing coefficient determining unit determines the area that intersects that described broken line and described equilibrium line surround, and described intersection area is obtained described equalizing coefficient divided by 1/2.
Alternatively, this device also comprises: equalizing coefficient Tip element, judges to carry out network traffics equilibrium for described equalizing coefficient is prompted to monitoring side.
Alternatively, the figure comprising described equilibrium line and described broken line is shown to described monitoring side by equalizing coefficient Tip element.
Alternatively, this device also comprises: congested circuit ratio-dependent unit, for determining congested circuit ratio; And/or congested flow ratio-dependent unit, for determining congested flow ratio; And/or current circuit number determining unit, for determining reference circuit number/current circuit number.
An advantage of the present invention is, the bandwidth availability ratio according to each link constructs equalizing coefficient, can objective, the traffic sharing that reflects network intuitively on the whole harmonious, flow distribution situation between each node in total evaluation network.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
What form a part for specification drawings describes embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, clearly the present invention can be understood, wherein:
Fig. 1 illustrates the flow chart of an embodiment according to network flow monitoring method of the present invention.
Fig. 2 illustrates the schematic diagram of equilibrium line and broken line according to one embodiment of the method for the invention.
Fig. 3 illustrates the example (part) of four element monitoring figure according to method of the present invention.
The current flow of all circuit between province is shown Fig. 4 and utilance is detailed and the part of an example of the congestion state list of each circuit diagram.
Fig. 5 illustrates the flowed fluctuation schematic diagram of this circuit.
Fig. 6 illustrates the structure chart of an embodiment of the network flow monitoring device of basis.
Fig. 7 illustrates the structure chart of another embodiment of the network flow monitoring device of basis.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1 illustrates the flow chart of an embodiment according to network flow monitoring method of the present invention.
As shown in Figure 1, step 102, obtains the bandwidth availability ratio w of every bar link in N bar link in network
n.The bandwidth availability ratio of every bar link in Large IP Network can be investigated, also can investigate the bandwidth availability ratio of every bar link in the link in certain direction in network.
Step 104, sorts the bandwidth availability ratio of N bar link, such as, according to order sequence from small to large, makes w
1<w
2< ... <w
n.
Step 106, obtains the coordinate of N+1 coordinate points according to the bandwidth availability ratio after sequence
and obtain corresponding broken line.
Step 108, according to this broken line determination equalizing coefficient, the area that namely broken line and equilibrium line surround accounts for the ratio of lower triangle area, wherein, described equilibrium line is the straight line put through (0,0) and (1,1), and described lower triangle is with (0,0), (1,0), the triangle that (1,1) is summit.Such as, the area that intersects that broken line and equilibrium line surround can first be determined; Namely the area that will intersect obtains equalizing coefficient divided by lower leg-of-mutton area (that is, 1/2).Equalizing coefficient can be pointed out (as modes such as display, voice broadcasts) to monitoring side to carry out network traffics equilibrium judgement, such as, the figure comprising equilibrium line and broken line is shown to monitoring side.
In above-described embodiment, bandwidth availability ratio according to each link constructs equalizing coefficient, can reflect that the traffic sharing of network is harmonious objectively on the whole, the method of flow distribution situation between each node in total evaluation network, and can effective location quantize network traffic congestion and link flow skewness weighing apparatus problem.For carrier class IP network network management system provides the balanced quantizating index of multi-direction (as between province to the province) network traffic sharing of a kind of assessment, be convenient to grasp flow distribution in time dynamic, intuitive is strong.
To suppose in network certain direction have N bar link 1,2 ..., N}, the bandwidth availability ratio of every bar link is w
n, w
1<w
2< ... <w
n, define a connection coordinate point
broken line, wherein n=0,1,2 ..., N, then this broken line can be expressed as function:
Obviously, the curve that function L is corresponding is monotonically increasing, and the span of the transverse and longitudinal coordinate of this curve is all [0,1].When the bandwidth availability ratio of these links is all identical, what namely mean the flow absolute uniform in this direction is carried on all links in this direction, and function L will become the diagonal straight line of link coordinate (0,0) and (1,1), claim this straight line to be equilibrium line.Utilance between link exists any uneven, then curve L will drop under equilibrium line becomes a concave.As shown in Figure 2.
In equalizing coefficient c, c=figure, triangle area under hatched area, easily knows 0≤c≤1.
The physical meaning of equalizing coefficient c is also very direct: c is less, means that the flow distribution of each link in this direction is more even, as c=0, hatched area is 0, curve L overlaps with equilibrium line, means that the utilance of all links in this direction is identical, traffic sharing absolute uniform; C is larger, means that the flow distribution between link is more uneven, and as c=1, hatched area is identical with lower triangle area, represents in link and occurs that single link utilance 100% and other link utilizations are the most non-uniform phenomenon of 0.
It is worth mentioning that, from pure mathematics definition, the equalizing coefficient of network traffics uses this relative indicatrix of bandwidth availability ratio of every bar link to calculate.
If suppose that inter-node link bandwidth is all identical, then the bandwidth availability ratio of link can be converted to this absolute index of link flow, but in practice, between network node, multi-band stretch circuit is mixed often runs, same direction may have the 2.5G/10G even repeat circuit of the different bandwidth type such as 40G all at bearer traffic, and therefore utilized bandwidth utilance is more reasonable.It is emphasized that, the early warning range of equalizing coefficient needs to define according to the actual conditions of network, time network occurs that temporary fault or network are in engineering adjustment period, network maintain management personnel should be different for the tolerance of the inter-node link traffic sharing uneven phenomenon that equalizing coefficient reflects.
Except equalizing coefficient, can also obtain other statistics with more comprehensively, the distribution situation of flow and congestion state in critic network objectively.Such as, congested circuit ratio, congested flow ratio and/or reference circuit number/current circuit number is determined.
To the circuit of any direction in network and flow carrying situation thereof, " four elements " mode as following table 1 represents:
| Reference circuit number/current circuit number | Congested circuit ratio |
| Congested flow ratio | Equalizing coefficient |
Table 1
Wherein:
" reference circuit number ": i.e. the circuit sum in this direction;
" current circuit number ": namely in this direction circuit, the circuit of non-interrupted state is total, and interrupt circuit comprises: the circuit of originating port DOWN alarm and flow are less than the circuit of minimum flow threshold value (can specify in advance).
" congested circuit ratio " refers to that this direction congested circuit number (flowing exceed the congestion threshold of specifying) accounts for the ratio of current circuit number.
" congested flow ratio " refers to that the flow sum of the congested circuit in this direction accounts for the ratio of current circuit flow sum.
" equalizing coefficient " refers to the assessment of the even situation of the bandwidth availability ratio to the current circuit in this direction, specifically see content above and explanation.
The four elements monitoring matrixes based on this Index Establishment can implementing monitoring and represent the upstate of all circuit in network, traffic sharing situation and congestion situation, the significant increase centralized monitor ability of network management system to network traffics.
To the large-scale IP backbone network of carrier-class, according to " economize-economize " for unit set up network side to, build flow distribution monitoring matrix between economizing, adopt Quaternion method as above to present to each unit in matrix.
The various abnormal conditions that four elements may be able to occur network link flow are carried out early warning and are represented, and illustrate for following table 2:
Table 2
1., as " current circuit number " < " reference circuit number ", can find that this direction has Circuit Interrupt (Port Profile down) or circuit not to interrupt but flow very little (but circuit do not interrupt flow lower than the minimum flow threshold value pre-set) very intuitively.It should be noted that especially, when the current circuit number on the current circuit number on a direction and its corresponding opposite direction is inconsistent, though often mean that circuit does not interrupt, but occur that the exception of one-way flow reduces, as the Shanghai → direction, Guangdong of table 2, this situation may be because IGP metric offering question or device port traffic forwarding fault cause, and needs to carry out router software configuration and hardware check immediately.
2. when " congested circuit ratio " is less, " congested flow ratio " is very large, although imply this direction to occur that the link of flow congestion is also few, but a big chunk of the flow that these several congestion links carry but account for that this side up flow, flow distribution is inevitable uneven, and therefore equalizing coefficient is also larger.As Beijing → direction, Shanghai of table 2.When there is analogue, need to carry out necessary flow adjustment.
3. when " congested circuit ratio " is medium, " congested flow ratio " is very large, and when equalizing coefficient is less, means that many circuit that this side up all occur congested, as the Guangdong → direction, Beijing of table 2.Analogue may be difficult to be alleviated by the adjustment of simple flow, and needs to rely on the network capacity extension to solve.
4. if there is the situation that " congested circuit ratio ", " congested flow ratio " and this three element values of equalizing coefficient are all very little, then when " current circuit number " maintains an equal level with " reference circuit number ", mean that all links in this direction are all at bearer traffic, there is no congested generation and traffic sharing is even, this is network operation and build the dreamboat pursued, the as above Beijing-direction, Chengdu of table 2 just; But, once " current circuit number " is far below " reference circuit number ", then shows to have occurred the interruption of a large amount of circuit or the Traffic Anomaly of a large amount of circuit, now need to carry out troubleshooting at once, as above Beijing → the direction, Guangdong of table 2.
Generally speaking, technical scheme of the present disclosure can very effective analysis and evaluation network traffics carry and distribution situation, compensate for existing IP network guard system carries out monitoring analysis disappearance to this content.
The technical scheme that the disclosure relates to has been successfully applied in telecom operators backbone network IP comprehensive network management, backbone network maintenance management personnel are helped to carry out centralized watch and the real-time analysis of flow carrying situation between province, the significant increase monitoring level of IP backbone network in network traffics carrying.Network management system use snmp agreement gathers the flow information on each router port, and carries out Macro or mass analysis to the circuit of all directions, calculates four element index such as equalizing coefficient, comprehensively presents in the matrix form.
In existing network example application, the red alarm threshold of equalizing coefficient is set to 0.3, the threshold value of circuit flow congestion is set to 80%(circuit bandwidth utilance and surpasses 80% and think that circuit is congested), economize-> and economize congested red alarm threshold and be set to this direction of 50%(and be in congestion state more than 50% flow).Actual effect is as follows:
Monitor the flow congestion situation of circuit between economizing in the matrix form, Fig. 3 illustrates the example (part) of four element monitoring figure according to method of the present invention.Transverse and longitudinal coordinate is 31 provinces's (only part being shown)
Monitoring index comprises: congested circuit ratio, congested flow ratio, total bandwidth and way circuit number (fiducial value, currency), equalizing coefficient.
If interrupt circuit number ratio, congested circuit ratio, congested flow ratio or equalizing coefficient superthreshold between economizing, early warning can be carried out with special color mark.
There is provided three grades of early warning: yellow, orange, red.Each grade threshold is arranged from small to large, and be worth larger, warning level is higher.Threshold value of warning at different levels can be set in system scope unification, also can by the independent setting threshold of specific direction.
The quantity of communication disruption between the display of matrix scrolls beneath economizes, congested quantity, and the concrete condition listing Congestion Level SPCC between province (in the sequence of congested flow ratio) TOP5.
Every 5 minutes automatic refresh datas, the in real time truth of reflection network.
Data item between the introspection of click matrix, can flick the current flow of all circuit between page display province and utilance is detailed and the congestion state list of each circuit (as shown in Figure 4), sorts by percentage of circuit utilization.Click the flowed fluctuation (as shown in Figure 5) that circuit name can check this circuit.
Fig. 6 illustrates the structure chart of an embodiment of the network flow monitoring device of basis.As shown in Figure 6, this device comprises: broadband utilance acquiring unit 61, for obtaining the bandwidth availability ratio w of every bar link in N bar link in network
n; Broadband utilance sequencing unit 62, makes w for the bandwidth availability ratio of described N bar link is carried out sequence
1<w
2< ... <w
n; Broken line coordinate acquiring unit 63, for obtaining connection coordinate point
broken line; Equalizing coefficient determining unit 64, for according to described broken line determination equalizing coefficient, the area that namely described broken line and equilibrium line surround accounts for the ratio of lower triangle area, wherein, described equilibrium line is for passing through (0,0) and (1,1) straight line of putting, described lower triangle is with (0,0), (1,0), (1,1) triangle that is summit.Equalizing coefficient determining unit determines the area that intersects that described broken line and described equilibrium line surround, and described intersection area is obtained described equalizing coefficient divided by 1/2.
Fig. 7 illustrates the structure chart of another embodiment of the network flow monitoring device of basis.As shown in Figure 7, this device also comprises equalizing coefficient Tip element 75, judges to carry out network traffics equilibrium for described equalizing coefficient is prompted to monitoring side.Such as, the figure comprising equilibrium line and broken line is shown to monitoring side by equalizing coefficient Tip element.Alternatively, this device also comprises: congested circuit ratio-dependent unit 76, for determining congested circuit ratio; And/or congested flow ratio-dependent unit 77, for determining congested flow ratio; And/or current circuit number determining unit 78, for determining reference circuit number/current circuit number.
So far, described in detail according to network flow monitoring method of the present invention and device.In order to avoid covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Method and system of the present invention may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method and system of the present invention.Said sequence for the step of described method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Although be described in detail specific embodiments more of the present invention by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (10)
1. a Large IP Network flux monitoring method, is characterized in that, comprising:
Obtain the bandwidth availability ratio w of every bar link in N bar link in network
n;
The bandwidth availability ratio of described N bar link is carried out sequence and makes w
1<w
2<<w
n;
Obtain connection coordinate point
broken line;
According to described broken line determination equalizing coefficient, the area that namely described broken line and equilibrium line surround accounts for the ratio of lower triangle area, and wherein, described equilibrium line is for passing through (0; 0) and (1,1) straight line of putting, described lower triangle is with (0,0), (1; 0), (1,1) triangle that is summit;
Wherein, n=1 ...., N, N are natural number.
2. method according to claim 1, is characterized in that, describedly comprises according to described broken line determination equalizing coefficient:
Determine the area that intersects that described broken line and described equilibrium line surround;
Namely described intersection area is obtained described equalizing coefficient divided by described lower leg-of-mutton area.
3. method according to claim 1, is characterized in that, also comprises:
Described equalizing coefficient is prompted to monitoring side to carry out network traffics equilibrium judgement.
4. method according to claim 3, is characterized in that, described described equilibrium instruction is prompted to monitoring side and comprises:
The figure comprising described equilibrium line and described broken line is shown to described monitoring side.
5. method according to claim 1, is characterized in that, also comprises:
Determine congested circuit ratio, congested flow ratio and/or reference circuit number/current circuit number.
6. a Large IP Network flow-monitoring device, is characterized in that, comprising:
Broadband utilance acquiring unit, for obtaining the bandwidth availability ratio w of every bar link in N bar link in network
n;
Broadband utilance sequencing unit, makes w for the bandwidth availability ratio of described N bar link is carried out sequence
1<w
2< ... <w
n;
Broken line coordinate acquiring unit, for obtaining connection coordinate point
broken line;
Equalizing coefficient determining unit; for according to described broken line determination equalizing coefficient, the area that namely described broken line and equilibrium line surround accounts for the ratio of lower triangle area, wherein; described equilibrium line is for passing through (0; 0) and (1,1) straight line of putting, described lower triangle is with (0; 0), (1; 0), (1,1) triangle that is summit;
Wherein, n=1 ...., N, N are natural number.
7. device according to claim 6, is characterized in that, described equalizing coefficient determining unit determines the area that intersects that described broken line and described equilibrium line surround, and described intersection area is obtained described equalizing coefficient divided by 1/2.
8. device according to claim 6, is characterized in that, also comprises:
Equalizing coefficient Tip element, judges to carry out network traffics equilibrium for described equalizing coefficient is prompted to monitoring side.
9. device according to claim 8, is characterized in that, the figure comprising described equilibrium line and described broken line is shown to described monitoring side by described equalizing coefficient Tip element.
10. device according to claim 6, is characterized in that, also comprises:
Congested circuit ratio-dependent unit, for determining congested circuit ratio;
And/or
Congested flow ratio-dependent unit, for determining congested flow ratio;
And/or
Current circuit number determining unit, for determining reference circuit number/current circuit number.
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