CN101404597A - Network quality index acquirement method, system and apparatus - Google Patents
Network quality index acquirement method, system and apparatus Download PDFInfo
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Abstract
The invention embodiment discloses a network quality index acquiring method, a system and a device thereof. The method comprises the steps as follows: a source IP address and a target IP address are obtained; a detection stream is confirmed according to the source IP address and the target IP address; a detection message template is generated according to the detection stream; the detection message template is sent to a transmitting layer to ensure that the transmitting layer generates a detection message according to the detection message template and obtains statistic information according to the detection message; the statistic information from the transmitting layer is received; and the network quality index is acquired according to the statistic information. The invention ensures that the paths of the detection stream and a business stream are consistent by generating the detection message and setting the source IP address and the target IP address in the detection message, and the invention ensures the real time statistic by acquiring the network quality index at a control layer.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of acquisition methods, system and device of network quality index.
Background technology
Present Internet protocol (IP, Internet Protocol) network, the carrying multiple business, miscellaneous service has requirement to the communication quality of IP network, IP network need satisfy the communication need of miscellaneous service, for a kind of IP network, the quality of network depends on the performance statistics index of network, this index mainly is time-delay, shake and packet loss etc., in the operation of network, the performance index of network will contrast with the service operation situation of reality, so that discovery in time or judgement are to the risk and the fault of bearer service.
In the prior art, carry out the statistics of network performance index by the method for built-in probe or external probe, this built-in probe is for to be deployed in a functional module on the network element, and this network element is a router, thereby uses this functional module to carry out the detection packet statistics.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
When using built-in probe, the source IP of detection packet and purpose IP use the loop-back address of network element, the path of detection flows and Business Stream may be inconsistent, the precision that detects can be very poor, and when being on a grand scale of network, the polling interval of detecting between website and website is bigger, and network quality can not be described in real time.
Summary of the invention
The embodiment of the invention provides a kind of acquisition methods, system and device of network quality index, so that detection flows is consistent with the path of Business Stream, and obtains network quality in real time
In order to achieve the above object, the embodiment of the invention has proposed a kind of acquisition methods of network quality index, comprising:
Obtain source IP address and purpose IP address;
Determine detection flows according to described source IP address and described purpose IP address, and generate detection message template according to described detection flows;
Described detection message template is sent to the forwarding layer,, and obtain statistical information according to described probe messages so that described forwarding layer generates probe messages according to described detection message template;
Reception is from the described statistical information of transmitting layer, and obtains network quality index according to described statistical information.
The embodiment of the invention has also proposed a kind of system that obtains of network quality index, comprising: the first router and the second router, wherein,
Described the first router, be used to obtain source IP address and purpose IP address, generate probe messages according to described source IP address and purpose IP address, and obtain statistical information, to obtain the network quality index between described the first router and the described the second router according to described probe messages.
The embodiment of the invention has also proposed a kind of deriving means of network quality index, comprising:
Key-course, be used to obtain source IP address and purpose IP address, determine detection flows according to described source IP address and described purpose IP address, and according to described detection flows generation detection message template, described detection message template is sent to transmitting layer, and obtain network quality index according to the described layer statistical information that sends of transmitting;
Transmit layer, be used for generating probe messages, and obtain described statistical information according to described probe messages according to described detection message template.
Compared with prior art, the embodiment of the invention has the following advantages: by generating probe messages, set source IP and purpose IP address in probe messages, make detection flows consistent with the path of Business Stream, and, by obtaining network quality index, guaranteed real-time statistics at key-course.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of detection method flow chart that the embodiment of the invention one proposes;
Fig. 2 is a kind of detection method flow chart that the embodiment of the invention two proposes;
Fig. 3 generates the detection message template flow chart on the key-course that proposes of the embodiment of the invention two;
Fig. 4 uses the ISIS field schematic diagram that sets a property for passing through of proposing of the embodiment of the invention two;
Fig. 5 uses the OSPF field schematic diagram that sets a property for passing through of proposing of the embodiment of the invention two;
Fig. 6 uses the BGP field schematic diagram that sets a property for passing through of proposing of the embodiment of the invention two;
Fig. 7 is the source IP tabulation and the corresponding interface plate coupling schematic diagram that the embodiment of the invention two proposes;
Fig. 8 generates the probe messages flow chart on the forwarding layer that proposes of the embodiment of the invention two;
Fig. 9 plays the tabulation schematic diagram of timestamp for what the embodiment of the invention two proposed for router;
Figure 10 is a kind of sniffer structure chart that the embodiment of the invention three proposes;
Figure 11 is the structure chart of first acquisition module of the embodiment of the invention three propositions;
Figure 12 is the structure chart of the 3rd acquisition module of the embodiment of the invention three propositions.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The acquisition methods of a kind of network quality index that the embodiment of the invention one proposes as shown in Figure 1, comprising:
101, obtain source IP address and purpose IP address;
102, determine detection flows according to described source IP address and described purpose IP address, and generate detection message template according to described detection flows;
103, described detection message template is sent to the forwarding layer, so that described forwarding layer generates probe messages according to described detection message template, and obtain statistical information according to described probe messages;
104, receive the statistical information of transmitting layer from described, and obtain network quality index according to described statistical information.
As seen, in the embodiment of the invention,, in probe messages, set source IP and purpose IP address, make detection flows consistent with the path of Business Stream by generating probe messages, and, by obtaining network quality index, guaranteed real-time statistics at key-course.
A kind of detection method that the embodiment of the invention two proposes as shown in Figure 2, comprising:
201, generate detection message template at key-course, and this detection message template is sent on the forwarding layer.
Concrete, the process of generation detection message template comprises as shown in Figure 3 on this key-course:
301, on the key-course of local router, start network servicequality and detect (NSQD, NetworkService Quality Detect) service.
302, it on the key-course of local router professional access interface configuration of IP address, this IP address promptly should business source IP address, the IP address that should dispose for the access interface of business is professional source IP address, promptly this source IP address is the source IP address of detection flows, also is the source IP address of Business Stream.
Network servicequality detection attribute field is set in the route messages of router issue to be included but not limited to: by using Interior Gateway Protocol (IGP, Interior Gateway Protocols) in the route messages of local router issue, define special field, and by using this special field to represent the NSQD attribute of local router routing iinformation; Or pass through to use border gateway protocol (BGP, Border GatewayProtocol) in the route messages of local router issue, to define special field, and by using this special field to represent the NSQD attribute of local router routing iinformation; Or by using classification link state routing protocol (ISIS) in the route messages of local router issue, to define special field, and by using this special field to represent the NSQD attribute of local router routing iinformation; Or by using ospf (OSPF) in the route messages of local router issue, to define special field, and by using this special field to represent the NSQD attribute of local router routing iinformation.By using the ISIS attribute field to represent that the NSQD attribute of routing iinformation is specially the ISIS attribute field is made amendment, as shown in Figure 4, in the LSP of ISIS (hierarchical service provides program) message, by ATT (ATT) or ISTYPE (hierarchical type) are carried out expanded definition, represent the NSQD attribute of routing iinformation.By using the OSPF attribute field to represent that the NSQD attribute of routing iinformation is specially the OSPF attribute field is made amendment, as shown in Figure 5, in the LSA of OSPF (Link State Advertisement) message,, represent the NSQD attribute of routing iinformation by " option " field is set.By using the bgp attribute field to represent that the NSQD attribute of routing iinformation is specially the bgp attribute field is made amendment, as shown in Figure 6, in the Update of BGP (renewal) message, increase Path Attributes (path attribute) field, represent that routing iinformation carries the NSQD attribute.
In the present embodiment, the NSQD attribute of local router routing iinformation is for can use above-mentioned special field to safeguard the source IP address of local router.Local router sends route messages by Routing Protocol to far-end router, has comprised the special field of carrying the NSQD attribute in this route messages.In the present embodiment, on local router, in key-course, need access interface configuration of IP address, promptly need by using above-mentioned special field to safeguard the source IP tabulation of local router for a plurality of business.Local router also needs IP tabulation in this source is sent among the NP (network processing unit) of local router interface board, and IP tabulation in source is mated with relevant interface board.For example, as shown in Figure 7, the access port of this local router interface board is virtual local area network interface (vlanif), and the source IP tabulation that the business board at first up port place in the selectable port of arranging in order receives as shown in Figure 7.
303, IGP or BGP service by local router receive the routing iinformation from the far-end router issue.
Same, in the routing iinformation of far-end router by issue, the special field that also can carry the NSQD attribute.When the NSQD of local router service detection after special field with NSQD attribute, obtain this and have IP address in the NSQD attribute special field, this IP address is purpose IP address, the purpose IP address of safeguarding local router by the special field of using the local router routing iinformation.This purpose IP address is the purpose IP address of detection flows, and this purpose IP address also is the purpose IP address of Business Stream.
304, in the NSQD of local router service, in the special field of local router definition, safeguard the tabulation of this source IP tabulation and purpose IP.
Concrete, need be in local router the detection flows table, and use the special field of local router definition to safeguard this detection flows table.This detection flows table is according to this source IP and the definite detection flows of purpose IP, by generating strategy definite detection flows that needs; The strategy of this formulation includes but not limited to: specify certain purpose IP address to link to each other with source IP address to determine detection flows; Or choose all purpose IP addresses and link to each other with source IP address to determine detection flows; Or choose in all purpose IP addresses except certain purpose IP address and link to each other with source IP address to determine detection flows.When the source IP in the detection flows or purpose IP change, NSQD service by Routing Protocol notice local router, serve source IP tabulation and the purpose IP tabulation of safeguarding this local router by NSQD, promptly serve the detection flows table of safeguarding this local router by NSQD.
305, in the key-course of local router, determined detection flows, can on key-course, generate detection message template,, this message template is issued to this source IP tabulate on the corresponding service interface board according to the source IP tabulation that generates in 302 and the matching relationship of relevant interface board.
202, generate real probe messages at the forwarding layer according to above-mentioned detection message template, can obtain detection flows, and carry out the statistics of network performance index according to this detection flows.
Concrete, transmit at this and to generate real probe messages on layer, and the statistic processes of carrying out network performance index is as shown in Figure 8, comprising:
801, on the forwarding layer of local router, service interface board has obtained the detection message template that key-course issues, and generates real probe messages according to this detection message template in the NP of interface board, and stamps the timestamp of sequence number and transmission in this real probe messages.
Concrete, in detection message template, comprised the information such as corresponding relation of IP tabulation in source with corresponding relation, source IP tabulation and the purpose IP tabulation of relevant interface board, on key-course, according to the corresponding relation of source IP address and relevant interface board, detection message template is issued on the pairing service interface board of source IP address.For example, shown in Figure 4, be 10.1 detection message template for source IP address, it is on the 10.1 pairing service interface boards 2 that key-course sends to source IP address with detection message template; This service interface board 2 is according to the corresponding relation of IP tabulation in source in the detection message template and purpose IP tabulation, generate real probe messages, and on this probe messages, stamp the timestamp of sequence number and transmission, this sequence number is that source IP address is 10.1 professional pairing label, the time label the when timestamp of this transmission sends for this probe messages.
This probe messages is to adopt the message of initial IP (RAW IP) form, and ip procotol can fill out 210.Wherein, the length of IP can manually be set, and simulates different traffic streams, and in practice, the length of IP generally adopts the minimum length of agreement regulation, survey the link overhead of bringing to reduce, and the value of this ipprocotol is chosen arbitrarily.
802, after generating probe messages,, probe messages is sent to the pairing far-end router in purpose IP address according to the purpose IP address in this probe messages.
803, the receiving terminal of far-end router receives probe messages, and resolve purpose IP address in this probe messages, when purpose IP address is consistent with the source IP address of this far-end router in being resolved to this probe messages, be that ip protocol is 210, the service interface board that then this probe messages is directly forwarded to this far-end router is handled.
Concrete, the processing that the service interface board of this far-end router is done the probe messages of receiving includes but not limited to: changing the source IP address and the purpose IP address of this probe messages, is that 210 to change to ip protocol be 211 with ip protocol.
804, the probe messages after far-end router will be changed sends to local router, is about to response message and returns to local router.
Concrete, this response message is that source IP address in the probe messages and purpose IP address are changed, promptly the purpose IP address of this response message is the source IP address of probe messages, response message can be returned to local router accurately.
805, the transmitting terminal of local router receives echo (response) message that returns from far-end router, it is consistent with the source IP address of this local router to be resolved in this message that returns purpose IP address, and then the message that this is returned directly forwards service interface board to and processes.
806, the service interface board of local router is handled the message that returns, and the message that returns is stamped time of reception stab, and message information is put into the statistical form of interface board.
Concrete, the timestamp of above-mentioned transmitting time and the timestamp of time of reception are the timestamps of beating at same interface board, have guaranteed temporal synchronism.As shown in Figure 9, be the tabulation of timestamp that local router is beaten.This service interface board will be handled probe messages and response message, obtain the timestamp of transmitting time from probe messages, obtain the timestamp of time of reception from response message, and the sequence number of above-mentioned probe messages and response message is identical.
807, to transmit on the layer, the interface board of local router is done simple statistics to detection flows, when each detection flows statistic record reaches n, statistical information is sent on the master control borad of key-course.
203, at key-course, master control borad is added up statistical information, obtain the data of statistics, and according to (the RFC that requests for comments, Request For Comments) account form of Ding Yi time-delay, shake, packet loss is calculated time-delay, shake, packet loss etc. by the CPU of main frame, obtains network quality index between the required business site.
Concrete, this time-delay is meant that first bit of packet enters the time interval of router output to a last bit from router, and shake is meant the poor of time delay under existing time delay and the normal condition, and packet loss then is meant in the transmission course of packet, the loss of data.Above-mentioned CPU by main frame calculates time-delay and obtains between the required business site network quality index and be specially according to the timestamp of transmitting time and the timestamp of time of reception and determine to delay time between this business site, determine whether this time-delay satisfies the performance index of network quality, when the performance index of network quality were satisfied in this time-delay, then the network quality index of this business site was normal.
As seen, in the present embodiment, because the source IP that sets is the IP address of access service interface, thereby guaranteed to detect the consistency of path and service path, and the website that needs to detect is a route distribution protocol of using the professional network segment, need can obtain the targeted sites of detection automatically, deployment for detection flows, can upgrade automatically with IGP, BGP, masterplate and strategy that key-course is determined, transmit layer and be responsible for sending and simple statistics, key-course carries out complicated calculations according to statistics, has guaranteed real-time statistics and index precision.
The system that obtains of a kind of network quality index that the embodiment of the invention proposes, comprising: the first router and the second router, this first router are local router, this second router is a far-end router, wherein,
This first router is used to obtain source IP address and purpose IP address, generates probe messages according to source IP address and purpose IP address, and obtains statistical information according to probe messages, to obtain the network quality index between the first router and the second router.
The deriving means of a kind of network quality index that the embodiment of the invention three proposes as shown in figure 10, comprising:
Key-course 11, be used to obtain source IP address and purpose IP address, determine detection flows according to described source IP address and described purpose IP address, and according to described detection flows generation detection message template, described detection message template is sent to transmitting layer 12, and obtain network quality index according to described layer 12 statistical information that sends of transmitting;
Transmit layer 12, be used for generating probe messages, and obtain described statistical information according to described probe messages according to described detection message template.
Further, this key-course 11 comprises:
First acquisition module 111 is used to obtain source IP address and purpose IP address;
First generation module 112, detection flows is determined in the source IP address and the described purpose IP address that are used for obtaining according to first acquisition module 111, and generates detection message template according to described detection flows;
Sending module 113 is used for the detection message template that first generation module 112 generates is sent to the forwarding layer, so that described forwarding layer generates probe messages according to described detection message template, and obtains statistical information according to described probe messages;
Second acquisition module 114 is used to receive the statistical information of transmitting layer from described, and obtains network quality index according to described statistical information.
Further, as shown in figure 11, this first acquisition module 111 comprises:
First acquiring unit 1112 is used to obtain described source IP address, and detects the described source IP address of maintenance in the attribute field at described network servicequality;
Further, this forwarding layer 12 comprises:
Second generation module 121 is used for generating probe messages according to described detection message template;
The 3rd acquisition module 122 is used for obtaining statistical information according to described probe messages.
Further, as shown in figure 12, the 3rd acquisition module 122 comprises:
First writing unit 1221 is used for adding sequence number and transmitting time stamp in the probe messages that generates;
Second writing unit 1222 is used to receive the message that described far-end router returns, and adds time of reception and stab.
The 3rd acquiring unit 1223 is used for obtaining described statistical information according to described transmitting time stamp and described time of reception stamp.
As seen, in the present embodiment, because the source IP that sets is the IP address of access service interface, thereby guaranteed to detect the consistency of path and service path, and the website that needs to detect is a route distribution protocol of using the professional network segment, need can obtain the targeted sites of detection automatically, deployment for detection flows, can upgrade automatically with IGP, BGP, masterplate and strategy that key-course is determined, transmit layer and be responsible for sending and simple statistics, key-course carries out complicated calculations according to statistics, has guaranteed real-time statistics and index precision.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (12)
1, a kind of acquisition methods of network quality index is characterized in that, comprising:
Obtain source IP address and purpose IP address;
Determine detection flows according to described source IP address and described purpose IP address, and generate detection message template according to described detection flows;
Described detection message template is sent to the forwarding layer,, and obtain statistical information according to described probe messages so that described forwarding layer generates probe messages according to described detection message template;
Reception is from the described statistical information of transmitting layer, and obtains network quality index according to described statistical information.
2, the method for claim 1 is characterized in that, describedly obtains source IP address and purpose IP address comprises:
Access interface according to business obtains described source IP address, and described source IP address is the source IP address of Business Stream, and detects the described source IP address of maintenance in the attribute field at network servicequality;
Receive the routing iinformation of far-end router issue, and obtain described purpose IP address from described routing iinformation, described purpose IP address is the purpose IP address of described Business Stream, and detects the described purpose IP of maintenance address in the attribute field at described network servicequality.
3, method as claimed in claim 2 is characterized in that, described network servicequality detects attribute field and comprises in following one or more:
Detect attribute field by the network servicequality that uses classification link state routing protocol ISIS in route messages, to be provided with;
Detect attribute field by the network servicequality that uses ospf OSPF in route messages, to be provided with;
Detect attribute field by the network servicequality that uses Border Gateway Protocol (BGP) in route messages, to be provided with;
Detect attribute field by the network servicequality that uses Interior Gateway Protocol IGP in route messages, to be provided with.
4, the method for claim 1 is characterized in that, describedly obtains statistical information according to probe messages and comprises:
Transmit layer and in the probe messages that generates, add sequence number and transmitting time stamp, and described probe messages is sent to far-end router;
Receive the message that described far-end router returns, and add time of reception and stab;
Obtain statistical information according to described transmitting time stamp and described time of reception stamp.
5, method as claimed in claim 4 is characterized in that, described transmitting time is stabbed and described time of reception stamp adds for same interface board.
6, the method for claim 1 is characterized in that, describedly obtains network quality index according to statistical information and comprises:
Obtain statistics according to described statistical information;
Obtain described network quality index according to described statistics, described network quality index comprises one or more in following:
Time-delay;
Shake;
Packet loss.
7, a kind of system that obtains of network quality index is characterized in that, comprises the first router and the second router, wherein,
Described the first router, be used to obtain source IP address and purpose IP address, generate probe messages according to described source IP address and purpose IP address, and obtain statistical information, to obtain the network quality index between described the first router and the described the second router according to described probe messages.
8, a kind of deriving means of network quality index is characterized in that, comprising:
Key-course, be used to obtain source IP address and purpose IP address, determine detection flows according to described source IP address and described purpose IP address, and according to described detection flows generation detection message template, described detection message template is sent to transmitting layer, and obtain network quality index according to the described layer statistical information that sends of transmitting;
Transmit layer, be used for generating probe messages, and obtain described statistical information according to described probe messages according to described detection message template.
9, device as claimed in claim 8 is characterized in that, described key-course comprises:
First acquisition module is used to obtain source IP address and purpose IP address;
First generation module is used for determining detection flows according to described source IP address and described purpose IP address, and generates detection message template according to described detection flows;
Sending module is used for described detection message template is sent to the forwarding layer, so that described forwarding layer generates probe messages according to described detection message template, and obtains statistical information according to described probe messages;
Second acquisition module is used to receive the statistical information of transmitting layer from described, and obtains network quality index according to described statistical information.
10, device as claimed in claim 9 is characterized in that, described first acquisition module comprises:
First acquiring unit is used for obtaining described source IP address according to the access interface of business, and described source IP address is the source IP address of Business Stream, and detects the described source IP address of maintenance in the attribute field at network servicequality;
Second acquisition unit, be used to receive the routing iinformation of far-end router issue, and from described routing iinformation, obtaining described purpose IP address, described purpose IP address is the purpose IP address of described Business Stream, and detects the described purpose IP of maintenance address in the attribute field at described network servicequality.
11, device as claimed in claim 8 is characterized in that, described forwarding layer comprises:
Second generation module is used for generating probe messages according to described detection message template;
The 3rd acquisition module is used for obtaining statistical information according to described probe messages.
12, device as claimed in claim 11 is characterized in that, described the 3rd acquisition module comprises:
First writing unit is used for adding sequence number and transmitting time stamp in the probe messages that generates;
Second writing unit is used to receive the message that described far-end router returns, and adds time of reception and stab;
The 3rd acquiring unit is used for obtaining described statistical information according to described transmitting time stamp and described time of reception stamp.
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2008
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