CN109088769B - Device for diagnosing MPLS-VPN data message - Google Patents
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- CN109088769B CN109088769B CN201810944309.4A CN201810944309A CN109088769B CN 109088769 B CN109088769 B CN 109088769B CN 201810944309 A CN201810944309 A CN 201810944309A CN 109088769 B CN109088769 B CN 109088769B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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Abstract
The invention discloses a device for diagnosing MPLS-VPN data message, comprising: the device is independent of the router, and is connected with the router, including: the data collector is used for collecting all multi-protocol label switching MPLS data messages forwarded by the current router; and the processor is used for analyzing the MPLS data message and determining whether the related parameters corresponding to the MPLS data message are abnormal or not. The device for diagnosing the MPLS-VPN data message is independent of the router, can be flexibly set and is not dependent on the model and the function limitation of the router. And the data message can be collected in real time, and the integrity of the data message is ensured. In addition, the data message can be analyzed anytime and anywhere, so that whether the relevant performance parameters corresponding to the data message are abnormal or not is determined, and general operation and maintenance personnel can take effective measures in time.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a device for diagnosing MPLS-VPN data messages.
Background
At present, MPLS VPN is an IP-VPN based on MPLS technology, which applies MPLS technology on a network router and a switching device, simplifies the router selection mode of a core router, can be used for constructing an intranet and an extranet, and can meet the transmission system of various flexible service configuration requirements.
For traffic analysis of the MPLS VPN, a Netflow analysis device is generally used. Netflow technology was originally invented by Darren Kerr and Barry Bruins of cisco in 1996, and Netflow is mainly used for a proprietary network device (router) to accelerate data exchange and can synchronously realize measurement and statistics of high-speed forwarded IP data Flow (Flow).
The following problems mainly exist in the MPLS VPN analysis using the Netflow technique:
1. the analysis precision is high, Netflow is that the exchange device sends flow information, but the exchange device mainly has the function of data exchange, so when the exchange flow is large, the exchange device sends flow data in order to ensure the exchange data, the flow data is sampled and sent, and the data cannot be ensured to be complete;
2. the device is required to support Netflow, Netflow is invented by Cisco, so that the Nesician router is mainly supported at present, but some routers need to additionally purchase a support module if the Netflow function is required to be supported, and the Netflow is not unified with the standards of other domestic switching devices;
3. application performance analysis cannot be performed, and since Netflow only sees log information of a flow, there is no way to analyze whether performance parameters such as a data transmission path and response time are abnormal.
Disclosure of Invention
The present invention is directed to a device for diagnosing MPLS-VPN datagram, so as to solve the above technical problem.
In order to achieve the above object, a technical solution of the present invention provides a device for diagnosing MPLS-VPN datagram, the device being independent of a router and connected to the router, including: the data collector is used for collecting all multi-protocol label switching MPLS data messages forwarded by the current router;
the processor is configured to analyze the MPLS data packet and determine whether a relevant parameter corresponding to the MPLS data packet is abnormal, where the relevant parameter corresponding to the MPLS data packet at least includes one or more of the following parameters:
the actual destination router route reached during transmission of the MPLS data packet, the actual response time corresponding to the MPLS data packet, the transmission protocol actually followed during transmission of the MPLS data packet, the actual source address, the actual destination address, the actual source port, or the actual destination port of the data transmission.
The invention has the following advantages: the device for diagnosing the MPLS-VPN data message is independent of the router, can be flexibly set and is not dependent on the model and the function limitation of the router. And the data message can be collected in real time, and the integrity of the data message is ensured. In addition, the data message can be analyzed anytime and anywhere, so that whether the relevant performance parameters corresponding to the data message are abnormal or not is determined, and general operation and maintenance personnel can take effective measures in time.
Drawings
Fig. 1 is a schematic structural diagram of a device for diagnosing an MPLS-VPN data packet according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of multiple retransmission requests in an abnormal Oracle data stream shown after diagnosis by the device for diagnosing MPLS-VPN data messages provided by the present invention;
FIG. 3 is a schematic diagram of an abnormal data flow shown after diagnosis by the apparatus for diagnosing MPLS-VPN data packets according to the present invention;
FIG. 4 is a schematic diagram of an Oracle query statement displayed after diagnosis by the device for diagnosing MPLS-VPN data messages according to the present invention;
FIG. 5 is a schematic diagram of all telecommunication services of a power saving company provided by the present invention;
fig. 6 is a schematic diagram illustrating a comparison configuration of all VPN IDs according to actual service names by a device configuration function according to the present invention;
fig. 7 is a schematic diagram after the association relationship between all RT values and MPLS VPN services is established according to the present invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
An embodiment of the present invention provides a device for diagnosing an MPLS-VPN data packet, and specifically, as shown in fig. 1, the device is independent of a router and is connected to the router. The device includes: a data collector 10 and a processor 20.
And the data collector 10 is configured to collect all MPLS data packets forwarded by the current router.
The processor 20 is configured to analyze the MPLS data packet, and determine whether a relevant parameter corresponding to the MPLS data packet is abnormal, where the relevant parameter corresponding to the MPLS data packet at least includes one or more of the following parameters: the actual destination router route reached during transmission of the MPLS data packet, the actual response time corresponding to the MPLS data packet, the transmission protocol actually followed during transmission of the MPLS data packet, the actual source address, the actual destination address, the actual source port, or the actual destination port of the data transmission.
The device for diagnosing the MPLS-VPN data message provided by the embodiment of the invention is independent of the router, can be flexibly set and is independent of the model and function limitation of the router. And the data message can be collected in real time, and the integrity of the data message is ensured. In addition, the data message can be analyzed anytime and anywhere, so that whether the relevant performance parameters corresponding to the data message are abnormal or not is determined, and general operation and maintenance personnel can take effective measures in time.
Example 2
On the basis of the above embodiment, when the relevant parameter corresponding to the MPLS data packet includes: in transmitting the MPLS data packet on the path, the processor 20 is specifically configured to:
and analyzing the service type of the MPLS data message and the actual target router reached when the MPLS data message is transmitted. And then matching a preset target router reached when the MPLS data message is transmitted according to the service type of the MPLS data message and a prestored BGP router protocol. The BGP router protocol here is actually the data that the data collector collects and stores when the collection device is just turned on.
According to the service type of the data packet, a next Target Router (Router Target, RT for short) to which the data packet should be transmitted in the BGP Router protocol, that is, the Target Router, may be determined. However, when analyzing the data packet, the next target router that may be reached when actually transmitting the data packet is not the preset target router but another router. Then, it may be determined that the transmission path of the MPLS data packet is abnormal. Namely, the actual target router is matched with the preset target router, and when the matching is determined to be failed, the transmission path of the MPLS data message is determined to be abnormal.
And/or the presence of a gas in the gas,
when the relevant parameters corresponding to the MPLS data packets include: at an actual response time corresponding to the MPLS data packet, the processor 20 is further configured to:
and carrying out timestamp marking on the MPLS data message, wherein the timestamp is used for indicating the time of the MPLS data message reaching the current router. And determining whether the actual response time corresponding to the MPLS data message is abnormal or not according to the service type of the MPLS data message, the pre-stored BGP router protocol time and the timestamp mark.
Specifically, according to the service type of the MPLS data packet and a pre-stored BGP router protocol, after matching a preset target router that is reached when the MPLS data packet is transmitted, a standard transmission path of the MPLS data packet at the next stage is determined. Then, the time for transmitting the data packet and the transmission time of the response returned by the target router to respond to the data packet are necessarily determined.
The timestamp is used for indicating the time when the MPLS data packet reaches the current router, and in consideration of the fact that the data packet is transmitted from the current router to the target router, and then the target router returns response transmission time and the like for responding to the data packet, the preset response time corresponding to the MPLS data packet may be determined. Comparing the actual response time with the preset response time, it can be determined whether the response time corresponding to the MPLS data packet is abnormal. Of course, there may be a special case that the data packet is sent to other routers or lost during the sending process, and then the actual response time may not be obtained. In this way, it can be determined that, in the standard response time period, if the response fed back by the preset target router is not received, it indicates that the response time corresponding to the MPLS data packet is abnormal.
Optionally, when the relevant parameter corresponding to the MPLS data packet includes: the transport protocol actually followed in the transmission of the MPLS data message, the actual source address, the actual destination address, the actual source port or the actual destination port of the data transmission, the processor 20 is also configured to,
acquiring a standard transmission protocol, a source address, a destination address, a source port and a destination port of data transmission, which are followed when the MPLS data message is transmitted;
and comparing the actual transmission protocol, the data transmission source address, the destination address, the source port and the destination port which are followed during the transmission of the MPLS data message with the corresponding standard transmission protocol, the data transmission source address, the destination address, the source port and the destination port respectively, and determining whether the actual transmission protocol, the actual source address, the actual destination address, the actual source port or the actual destination port which are followed during the transmission of the MPLS data message are abnormal or not.
Optionally, in addition to the above parameters, the number of bytes of the data packet, the number of data packets, and throughput information may also be included.
The specific process of analyzing the data message includes:
step one, after receiving a message sent by a data collector, generating an MPLS protocol object for distinguishing analyzed protocol types;
secondly, after the protocol type is confirmed, an MPLS upper layer IP layer is analyzed and an IP object is given, if the IP object is the IP object, the third step is skipped;
thirdly, starting to analyze a TCP/UDP layer object above an IP layer and carrying out matching analysis with the MPLS object;
step four, directly returning to the application object class when matching the MPLS object and the protocol layer object information, and updating the statistical information to the MPLS data set;
fifthly, updating the statistical information, transferring MPLS statistical classes, and counting corresponding IP flows and label information;
and sixthly, counting the IP flow, analyzing the TCP flow and the MPLS label and corresponding to the service RT/RD value, searching a corresponding flow list, recording a statistic value after matching, returning an analysis result, storing the analysis result into an analysis log, and recording the analysis result into an analysis database for later-period webpage display. Optionally, when the above abnormal condition occurs, the abnormal point may be labeled to indicate a reminder when the analysis result of the data packet is fed back. The later-stage operation and maintenance personnel can conveniently detect and take effective maintenance measures.
Further optionally, the apparatus further comprises: the memory 30, as shown in fig. 1, is used to store all MPLS data packets forwarded by the current router, and MPLS data collected by the data collector may be directly backed up in the memory 30. While MPLS data processed by the processor may also be stored in memory 30. The memory 30 can store all MPLS data packets for a long time, and the operation and maintenance personnel can check the original data packets at any time and analyze the data packets without being affected by the time dimension. The network fault backtracking method is greatly helpful for backtracking network faults.
Further optionally, the processor 20 is further configured to obtain a data packet decoding engine, and perform decoding analysis on the data packet. By decoding the data content of the original message, the cause of the abnormality in the data stream can be determined more accurately.
Optionally, the data collector 10 is a high-precision data acquisition card. The high-precision data acquisition card can acquire MPLS VPN data at high precision (nanosecond level), and the nanosecond level acquisition precision can ensure the high accuracy of all message information and ensure that the analysis result is in line with the reality. And the independent acquisition equipment is not limited by the Netflow technology of the router, so that the acquisition equipment can be deployed at will, and the working efficiency is improved.
Specifically, the following example is given for the data message analysis process:
1) for all the collected network data analysis, we see an abnormal Oracle data stream, as follows, the stream has many retransmissions and the customer response performance is very slow, reaching several tens of seconds. Specifically, as shown in fig. 2, the curve of fig. 2 shows the response time, and the enclosed content is the request retransmission and is the multiple retransmission.
2) The abnormal stream is selected and decoded, and as shown in fig. 3 in particular, the abnormal stream is selected according to the function performed by the present apparatus.
3) After decoding, the operation and maintenance personnel can see the problem point of the original content, and an Oracle query statement causes an exception of the whole stream, specifically as shown in fig. 4, where fig. 4 is a decoded data stream and shows the exception of the data stream.
In a specific example, a power saving company distributes 20 kinds of MPLS VPN service-based transmissions over the whole network, where the 20 kinds of services are distributed on respective CE routers, the CE routers are connected to PE routers, and each city and each place reach the PE routers through a headquarters core router to perform service communication interaction.
The device for diagnosing MPLS-VPN data packets is connected to the router, and fig. 5 illustrates all the telecommunication services of the power saving company, which are identified by using the RT value, and each VPN ID represents a service, and in order to show the service traffic more intuitively, all the VPN IDs are configured by comparing the actual service names through the device configuration function, as shown in fig. 6. The correlation between the service value and the RT value is configured, and the service enters the MPLS VPN service analysis module again, and all services are in one-to-one correspondence as shown in fig. 7, so that the flow of each service, including the data packet, the number of bytes, the throughput, and the like of the service, can be monitored visually.
The device for diagnosing the MPLS-VPN data message provided by the embodiment of the invention is independent of the router, can be flexibly set and is independent of the model and function limitation of the router. And the data message can be collected in real time, and the integrity of the data message is ensured. In addition, the data message can be analyzed anytime and anywhere, so that whether the relevant performance parameters corresponding to the data message are abnormal or not is determined, and general operation and maintenance personnel can take effective measures in time.
Example 3
Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, on which computer program instructions are stored, which when executed by the processor 20, implement the apparatus steps of embodiment 1 described above.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. An apparatus for diagnosing MPLS-VPN datagrams, wherein the apparatus is separate from and coupled to a router, the apparatus comprising:
the data collector is used for collecting all multi-protocol label switching MPLS data messages forwarded by the current router;
a processor, configured to analyze the MPLS data packet and determine whether a relevant parameter corresponding to the MPLS data packet is abnormal, where the relevant parameter corresponding to the MPLS data packet at least includes one or more of the following parameters:
the MPLS data message transmission path, the actual response time corresponding to the MPLS data message, the transmission protocol actually followed during the MPLS data message transmission, the actual source address, the actual destination address, the actual source port or the actual destination port of the data transmission;
wherein, when the relevant parameter corresponding to the MPLS data packet includes: when the actual response time corresponds to the MPLS data packet, the processor is further configured to:
time stamp marking is carried out on the MPLS data message, and the time stamp is used for indicating the time of the MPLS data message reaching the current router;
and determining whether the actual response time corresponding to the MPLS data message is abnormal or not according to the service type of the MPLS data message, the pre-stored BGP router protocol time and the timestamp mark.
2. The apparatus of claim 1, wherein when the relevant parameter corresponding to the MPLS datagram comprises: in the MPLS data packet transmission path, the processor is specifically configured to:
analyzing the service type of the MPLS data message and the actual target router reached when the MPLS data message is transmitted;
matching a preset target router reached when the MPLS data message is transmitted according to the service type of the MPLS data message and a pre-stored BGP router protocol;
and matching the actual target router with a preset target router, and determining that the MPLS data message transmission pathfinder is abnormal when determining that the matching fails.
3. The apparatus of claim 1, wherein the processor is specifically configured to:
matching a preset target router reached when the MPLS data message is transmitted according to the service type of the MPLS data message and a pre-stored BGP router protocol;
determining preset response time corresponding to the MPLS data message according to a preset target router which arrives when the MPLS data message is transmitted and the timestamp;
acquiring actual response time corresponding to the MPLS data message according to the MPLS data message;
and comparing the preset response time with the actual response time, and determining whether the response time corresponding to the MPLS data message is abnormal.
4. The apparatus of claim 1, wherein when the relevant parameter corresponding to the MPLS datagram comprises: the transport protocol actually followed in the transmission of the MPLS data packet, the actual source address, the actual destination address, the actual source port, or the actual destination port of the data transmission, the processor is further configured to,
acquiring a standard transmission protocol, a source address, a destination address, a source port and a destination port of data transmission, which are followed when the MPLS data message is transmitted;
and comparing the actual transmission protocol, the data transmission source address, the destination address, the source port and the destination port which are followed during the transmission of the MPLS data message with the corresponding standard transmission protocol, the data transmission source address, the destination address, the source port and the destination port respectively, and determining whether the actual transmission protocol, the actual source address, the actual destination address, the actual source port or the actual destination port which are followed during the transmission of the MPLS data message are abnormal or not.
5. The apparatus according to any of claims 1-4, wherein when determining that the related parameter corresponding to the MPLS data packet is abnormal, the related parameter is labeled to indicate a reminder.
6. The apparatus of claim 1, wherein the related parameters corresponding to the MPLS data packets further comprise: the number of bytes of the data message, the number of data messages, and throughput information.
7. The apparatus of any of claims 1-4 or 6, further comprising: a memory;
for storing all MPLS data packets forwarded by the current router.
8. The apparatus of claim 6, wherein the processor is further configured to obtain the data packet decoding engine to perform decoding analysis on the data packet.
9. The device of any one of claims 1-4, 6 or 8, wherein the data collector is a high precision data acquisition card.
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