New! View global litigation for patent families

WO2011118575A1 - Communication system, control device and traffic monitoring method - Google Patents

Communication system, control device and traffic monitoring method

Info

Publication number
WO2011118575A1
WO2011118575A1 PCT/JP2011/056822 JP2011056822W WO2011118575A1 WO 2011118575 A1 WO2011118575 A1 WO 2011118575A1 JP 2011056822 W JP2011056822 W JP 2011056822W WO 2011118575 A1 WO2011118575 A1 WO 2011118575A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
processing
node
packet
flow
transfer
Prior art date
Application number
PCT/JP2011/056822
Other languages
French (fr)
Japanese (ja)
Inventor
栄一 溝口
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing packet switching networks
    • H04L43/02Arrangements for monitoring or testing packet switching networks involving a reduction of monitoring data
    • H04L43/026Arrangements for monitoring or testing packet switching networks involving a reduction of monitoring data using flow generation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/02Topology update or discovery

Abstract

Provided is a communication system that is able to respond to both a requirement to minimize the number of processing rules (flow entries) maintained by individual transfer nodes, and a requirement for gaining a clear picture of the traffic that flows through a network. The communication system contains: a plurality of transfer nodes, which process incoming packets using processing rules that conform to the incoming packets, and are provided with a packet processing unit that collects statistics on the packets to which the processing rules have been applied; and a control device, which, for a specific transfer node, begins a detailed analysis of the packets that are the target of the statistical information, on the basis of the statistical information on the packets collected from each transfer node, and receives and outputs the analysis results from the specific transfer node (fig. 1).

Description

Communication system, control apparatus and a traffic monitoring method

[Description of RELATED APPLICATIONS
The present invention, Japanese Patent Application: is based on the priority claim of Japanese Patent Application No. 2010-068904 (March 24, 2010 application), the entire description of the application is incorporated herein in its citation and things.
The present invention relates to a communication system, a control apparatus and a traffic monitoring method, in particular, according to conform processing rules to the received packet, the communication system including a forwarding node to process the received packets, a control unit and a traffic monitoring method.

Recently, technology called open flow (OpenFlow) has been proposed (see Non-Patent Documents 1 and 2). Open Flow captures the communication as a flow of an end-to-end routing control per flow, fault recovery, load distribution, and performs optimization. Open flow switch acting as a forwarding node is provided with a secure channel for communication with the open flow controller positioned a control unit, operates in accordance with the flow table to be appropriately added or rewrite instruction from the open flow controller. The flow table, for each flow, a matching rule that matches a packet header (header field), and the action that defines the processing content (Action), the set is defined between the flow statistics (counter) (see FIG. 8 ).

For example, open flow switch receives a packet, searches for an entry having the flow table, matching the matching rule to the header information of the received packet (header field see Figure 8). As a result of the search, when an entry is found matching the received packet, the open flow switch, exemplary updates the flow statistics (counter) for the received packet, the described processing content in the action field of the entry to. On the other hand, the result of the search, if not found entry matching the received packet, the open flow switch, through a secure channel, and forwards the received packet to the open flow controller, source and transmission destination of the received packet It requests the determination of the path of the packet based on, and updates the flow table receives a flow entry to achieve this. Thus, the open flow switch is performing packet transfer using the entry stored in the flow table as a processing rule.

Moreover, the open flow controller, as described above, has a function to collect flow statistics (counter) which is updated every time the processes packets (visualization).

Non-Patent Document 3, a technique called "sFlow" to perform the network traffic sampling is introduced.

Nick McKeown and 7 other people, " OpenFlow: Enabling Innovation In Campus Networks ", [Online], [2 May 15, 2010 search], Internet <URL: http: //www.openflowswitch.org//documents/openflow-wp -Latest.Pdf> " OpenFlow Switch Specification ." Version 0.9.0 (Wire Protocol 0X98) [2 May 15, 2010 search], Internet <URL: http: //www.openflowswitch.org/documents/openflow-spec- V0.9.0.Pdf> " Inmon " [2 May 15, 2010 search], Internet <URL: http: //www.marubeni-sys.com/network/inmon/>

The entire disclosure of Non-Patent Documents 1 to 3 described narrowing Repetitive herein by reference thereto.
The following analysis has been made by the present inventors.
no of the (A) Figure 9. 1-3 is an example of a flow entry (processing rules) set in the open flow switch (OFS2) of FIG. 10. no. The first flow entry, the source IP address 10.10.10. The packets received from A, the action to be output from the port # 0 (GBE0 / 3) is defined. Similarly, no. 2 and 3 is a flow entry, the source IP address 10.10.10. B (port # 8000), 10.10.10. The packet received from the B (port # 8080), the action to be output from the port # 0 (GBE0 / 3) is defined.

The flow entry is set to non-patent documents 1 and 2, it is possible to use a wild card, no in (A) FIG. Flow entries of 1-3, as (B) in FIG. 9, it can be combined into one flow entry, use thereby, the storage area or the processing capability of the flow entry in the open flow switch (OFS2) efficiently it is possible to be.

However, by thus aggregating the flow entry, statistics for each flow entry that can be acquired in the open flow switch (OFS2) (FIG. 8, the "counter" in Fig. 10) also will be combined into one, for example, as shown in FIG. 10, when the abnormal traffic has occurred, which flow there is a problem that whether to generate an abnormal traffic can no longer know.

On the other hand, it is conceivable to implement the non-patent document 3 sFlow or "NetFlow" and port mirroring, etc. to the individual open flow switch, constant use of these techniques, large load of the open flow switch CPU is therefore, there is a problem that reduces the throughput of the entire network.

The present invention was made in view of the above, it is an object of the demand for as much as possible reduce the number of processing rules each transfer node holds (flow entry) in the network communication system capable of responding to both the demand to perform grasping of traffic flows, to provide a control apparatus and a traffic monitoring method.

According to a first aspect of the present invention, performs the processing of the received packets using a compatible processing rules to the received packet, and a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules , on the basis of the statistics on packets collected from each forwarding node, to initiate the analysis of packets that are subject to the statistics to a particular forwarding node, wherein the particular transfer node, receiving the analysis result communication system including a control device, the outputs Te is provided.

According to a second aspect of the present invention, performs the processing of the received packets using a compatible processing rules to the received packet, and a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules It is connected, on the basis of the statistics on packets collected from each forwarding node, to initiate the analysis of packets that are subject to the statistics to a particular forwarding node, from the particular forwarding node, the analysis results controller for receiving and output is provided.

According to a third aspect of the present invention, performs the processing of the received packets using a compatible processing rules to the received packet, and a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules a program to be executed by a computer constituting the connected control device, and the process of collecting statistical information of the packet from the respective forwarding node, based on the collected packets statistics from each forwarding node, particular transfer a process for starting the analysis of packets that are subject to the statistics node, from said particular transfer node, the program for executing the process of receiving and outputting the analysis results are provided. Incidentally, this program may be computer recorded on a readable storage medium. That is, the present invention can also be embodied as a computer program product.

According to a fourth aspect of the present invention, performs the processing of the received packets using a compatible processing rules to the received packet, and a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules connected control device, the step of collecting statistical information of the packet from the respective forwarding node, based on the collected packets statistics from each forwarding node, the subject of the statistics to a particular forwarding node a step of starting the analysis of packets that are, from said particular transfer node, a traffic monitoring method comprising the steps of receiving and outputting the analysis results are provided. The method that the control device for controlling the transfer node, tied to a particular machine.

According to the present invention, it is possible to respond to both the demand to perform a demand for as much as possible reduce the number of processing rules each transfer node holds (flow entry), the grasp of the traffic flowing in the network . The reason is that the statistical information processing rules to identify the forwarding node for detailed traffic monitoring, in adopting a graded structure to execute the traffic analysis.

It is a block diagram for explaining the configuration of a first embodiment of the present invention. It is a sequence diagram for explaining the operation of the first embodiment of the present invention. It is a diagram for explaining the operation of the first embodiment of the present invention. It is an example of processing rules that are set by using the analysis results of FIG. It is a block diagram for explaining the configuration of a second embodiment of the present invention. It is a diagram for explaining the operation of the second embodiment of the present invention. It is an example of processing rules that are set by using the analysis results of FIG. It is a diagram showing a configuration of flow entries of the open flow switch of Non-Patent Documents 1 and 2. A specific example of a flow table of the open flow switch in Non-Patent Documents 1 and 2. It is a diagram for flow entry shown in (B) of FIG. 9 for explaining the operation of the open flow switches configured.

First, an outline of the present invention. Hereinafter, drawing reference numerals denoted in the this summary is illustrative to assist solely understanding and is not intended to be limited to the illustrated embodiment. As shown in FIG. 1, a plurality communication system according to the present invention, performs the processing of the received packets using a compatible processing rules to the received packet, with the packet processing unit taking the statistics of the packet to which the said processing rules It contains a; (open flow controller OFC) 20, a; forwarding node and (OFS open flow switch) 10A ~ 10C, control apparatus having a function of collecting statistics on packets collected from each of these transfer nodes 10A ~ 10C in constructed.

Controller 20, based on the collected packets statistics from each forwarding node 10A ~ 10C, to initiate the analysis of the passing packets to a particular forwarding node, wherein the particular transfer node, receiving the analysis result of the passage packet to and output. For example, when an abnormality is found in the collected packet statistics from the transfer node 10A, controller 20, the forwarding node 10A, to initiate a detailed analysis of the packet is an object of the stats, receives the result ·Output.

Detailed analysis result of the packet can be used to identify and cause of the abnormal traffic, measures implemented on the upstream side of the transfer node 10A ~ 10C are causing the abnormal traffic (packet discard, rerouting).

First Embodiment
Next, a first embodiment of the present invention with reference to the accompanying drawings. Figure 1 is a block diagram for explaining the configuration of a first embodiment of the present invention. Referring to FIG. 1, a terminal 30, and three transfer nodes 10A ~ 10C (OFS1 ~ OFS3), a control device (OFC) 20, the server 40A, is shown and the server 40B, is.

Control device (OFC) 20, the transfer nodes 10A ~ 10C and (OFS1 ~ OFS3) are connected via a dedicated secure channel, to set a flow entry as the processing rules to the transfer node 10A ~ 10C (OFS1 ~ OFS3) It has a function. And open flow controller of Non-Patent Documents 1 and 2, in the case of open flow switch, statistics gathering to be set and later the flow entry is performed using an open flow protocol.

Transfer node 10A (OFS1) includes a processing rule storage unit 11 for storing a flow entry as processing rules, searches the matching processing rules to the received packet from the processing rule storage unit 11, a defined processing content to the processing rules a packet processing unit 12 for executing the control device (OFC) 20 based on instructions from the sampling data analysis unit 23 of the starts sampling of the passing packet, the packet sampling processing unit that transmits the result of the control device (OFC) 20 configured with 13, a. The packet processing unit 12, if there is no matching processing rules to the received packet to the processing rule storage unit 11, it is assumed that a function for requesting the setting processing rules to the control device (OFC) 20.

In Figure 1, it has been omitted, the transfer node 10B (OFS2), transfer node 10C (OFS3) also assumed to have a similar structure as the transfer node 10A (OFS1). Such transfer node, the open flow switch in Non-Patent Documents 1 and 2, can be achieved by mounting the sFlow agent in Non-Patent Reference 3.

Control device (OFC) 20, in response to the setting request processing rules from the packet processing unit of the forwarding node 10A ~ 10C (OFS1 ~ OFS3), to create a processing rule, each forwarding node 10A ~ 10C (OFS1 ~ OFS3 a processing rule creation section 21 to be sent to), the relative packet processing unit forwarding node 10A ~ 10C (OFS1 ~ OFS3), and statistics collection unit 22 that requests statistics on packets of applying each processing rule, statistical based on the information, to the packet-sampling processing unit of a particular forwarding node 10A ~ 10C (OFS1 ~ OFS3), indicates the start of the packet sampling (sFlow setting), the sampling data analyzing unit 23 for receiving the result, the It is provided. Such control device, the open flow controller of Non-Patent Documents 1 and 2, can be achieved by mounting the sFlow diagram analysis function of the non-patent document 3 (sFlow collector).

The control device (OFC) 20, as described in Non-Patent Documents 1 and 2, and the network topology information, configuration information of the transfer node holds the configured flow information (the flow entry information), these Referring to shall create a processing rule. For example, by referring to the network topology information using the Dijkstra method or the like, to create a path of least hop, by setting the processing rules for realizing the route to each forwarding node on the path, for each flow it is possible to perform the route control.

Each unit of the control device (OFC) 20 shown in FIG. 1 (processing means), the computer constituting the control device (OFC) 20, by using the hardware, the computer program for executing each process described above it can be realized.

Next, the operation of this embodiment with reference to FIGS described in detail. Figure 2 is a sequence diagram for explaining the operation of the first embodiment of the present invention. Referring to FIG. 2, the control device (OFC) 20, a predetermined time interval, at a predetermined timing such as a predetermined time, with respect to the packet processing unit of the forwarding node 10A ~ 10C (OFS1 ~ OFS3), each processing rule requesting statistics application packet and collects the responses (step S001; see page 9 of the non-patent document 2 "a Read-State").

Next, the control device (OFC) 20, based on the collected statistics information, it is determined whether an abnormality has occurred is performed. This determination is the transfer node 10A ~ 10C (OFS1 ~ OFS3) either received byte and the number of packets included in the statistical information received from, or indicator or the like is calculated using both of them, given the teeth it can be carried out according to whether or not such exceeds the threshold.

Here, for example, as shown in FIG. 3, at a certain forwarding node 10B (OFS2), when an abnormal traffic is observed (Yes in step S002), control device (OFC) 20, the transfer node 10B (OFS2 ) to, set the sFlow processing rule exceeds a predetermined threshold, indicating the aggregate sampling packet (step S003).

Here, as the traffic sampling at sFlow the abnormality by using the information of the header field of the observed processing rules, port (output port: GBE0 / 1) and the destination IP address (10.10.10.x) specify the sampling conditions, the traffic to be sampled can be narrowed down to a minimum.

Transfer node 10B which has received the instruction (OFS2), said at specified condition, transmits the result obtained by sampling the packets (analysis result) to the control device (OFC) 20 (step S004). It said packet results obtained by sampling the (analysis) is transmitted, for example, in the form of sFlow datagrams.

In the packet controller which receives sampled result (analysis result) to (OFC) 20, as shown in FIG. 4, analyzes often sFlow datagrams of traffic, specifying the intended often the most traffic that can. Furthermore, since the upper protocol information tcpdump equivalent is obtained from the sFlow datagram, it is possible to identify an abnormal application from the analysis results.

Using the analysis result, the control device (OFC) 20, abnormal flow or transfer node located at the starting point of flow anomaly application uses (ingress OFS; forwarding node 10A (OFS1 in FIG. 5)) on the other hand, as shown in FIG. 5, it sets the processing rule for executing a packet discard for the corresponding flow (flow entries) (step S005). Thus, it is possible to abnormally deal of traffic in the transfer node 10B (OFS2).

In the example of FIG. 5 has been described as setting the processing rule (flow entry) for executing the packet discard, as long as it can suppress the transmission of packets belonging to the abnormal flow, for example, the transfer priority actions and to change, set processing rule that defines an action to change transfer route (flow entries), the method for sending a packet to end communication can also be employed.

Further, in the example of FIG. 5, the transfer node located at the starting point of the flow; to (ingress OFS forwarding node 10A in FIG. 5 (OFS1)), has been described as setting the processing rule (flow entry), abnormal traffic thereby sending a packet to end is to set the to and upstream of the other packets in the forwarding node disposal or transfer priority processing rules to perform packet forwarding suppression such Rerouting (flow entry) that occurs, communication it is also possible to deal in.

As described above, according to the present embodiment without compromising the overall network performance, with the analysis of the abnormal traffic, it is possible to take measures. The reason is that performs low load traffic monitoring using statistical information in the processing rule (flow entry) constantly, when a malfunction occurs, a configuration for performing stepwise monitoring performed locally detailed traffic analysis It lies in the fact that adopted.

Further, as described above, by using the sFlow detailed traffic analysis, it is possible to identify an abnormal application.

Second Embodiment
Next, it will be described in detail with reference to the drawings, a second embodiment of the present invention to make changes to the first embodiment. Differences between the second embodiment and the first embodiment, also monitoring details traffic, a point that is to perform by using statistical information in the processing rule (flow entry), basic structure equivalent since, hereinafter, differences will be mainly described.

Figure 6 is a block diagram for explaining the configuration of a second embodiment of the present invention. The difference from FIG. 1 showing the configuration of the first embodiment, the transfer nodes 10A ~ 10C and transfer node 10a ~ 10c of the packet sampling processor 13 is omitted in (OFS1 ~ OFS3), the sampling data analyzer 23 There is a point of using a omitted controller (OFC) 20a.

In the first embodiment, the sampling data analyzing section 23 of the control device (OFC) 20, based on the received statistical information from the forwarding node 10A ~ 10C (OFS1 ~ OFS3), specific forwarding node 10A ~ 10C (OFS1 ~ to the packet-sampling processing unit of OFS3), indicates the start of the packet sampling (sFlow setting), had received the results, in the present embodiment, the processing rule creation unit 21a, as shown in FIG. 7, by setting a plurality of processing rules subdivided for further analysis of the packet (flow entry), to collect the respective statistics (xxx-1, xxx-2, xxx-3 in FIG. 7).

A plurality of processing rules subdivided (flow entry), as shown in FIG. 9, the control device (OFC) 20 side, be made from the history information when an aggregation of a plurality of processing rules (flow entries) it can. The control device (OFC) or network topology information 20 holds, using the configuration information of the transfer node, or as being subdivided.

As described above, according to this embodiment, the individual transfer node 10a ~ 10c (OFS1 ~ OFS3), without mounting the packet sampling processing unit, the processing rules that are subdivided to the extent necessary to monitor traffic create a (flow entry), it is possible to perform detailed traffic analysis.

Having described the preferred embodiments and specific operation of the present invention, the present invention is not limited to the embodiments described above, without departing from the basic technical concept of the present invention, You can add further modifications, substitutions and adjustments.

For example, in the embodiment described above, for simplicity of explanation, three transfer nodes 10A ~ 10C (OFS1 ~ OFS3) but it has been described with an example in which there is arranged network, constraints not the number of transfer nodes.

Further, in the above embodiment has been described as using sFlow, depending on the function provided in each forwarding node, SNMP (Simple Network Management Protocol) Remote Monitoring (RMON), NetFlow, port mirroring, etc., and other it is also possible to use traffic monitoring techniques.

Further, in the embodiment described above, basically, (compared to a threshold) traffic abnormality determination and a series of operations such as certain abnormal flow (Analysis of sFlow datagram), the control device (OFC) 20 Although it described as performed automatically, and displayed on the control device (OFC) display device connected to the 20 graphs illustrated in FIGS. 4 and 7, via the judgment of the operator (network manager), subsequent processing (sFlow setting, processing rule (creating and setting flow entries)) configured to perform may be adopted.
Within the bounds of the full disclosure of the present invention (including the claims), and based on the basic technical concept, it is possible to modify and adjust embodiments. Further, it should be noted that a variety of combinations and selections of various disclosed elements within the scope of the claims of the present invention. That is, the present invention naturally including the entire disclosure, various modifications will be made by those skilled in the art according to the technical concept, modification and in the appended claims.

10a, 10A ~ 10C forwarding node (OFS)
11 processing rule storage unit 12 packet processing unit 13 the packet sampling section 20,20a controller (OFC)
21,21a processing rule creation section 22 statistics collection unit 23 sampling data analyzing section 30 terminal 40A server A
40B server B

Claims (13)

  1. Performs processing of the received packets using a compatible processing rules to the received packet, and a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules,
    On the basis of the statistics on packets collected from each forwarding node, to initiate the analysis of packets that are subject to the statistics to a particular forwarding node, wherein the specific forwarding node receives the analysis result communication system and a control unit for outputting.
  2. Wherein the control device, based on the analysis result of the packet that is the subject of the statistical information, to transfer node of the input side of the excess traffic identified using the network topology information, are responsible of the excessive traffic communication system according to claim 1 for setting a processing rule to suppress the forwarding of the packet.
  3. The forwarding node further comprises a packet sampling processing unit that performs sampling of a packet according to the indicated sampling condition from the control device,
    Said control device, the relative said packet sampling processing unit of the particular transfer node, indicates the start of the sampling of the packet that is the subject of the statistical information, according to claim 1 or 2 of the communication system for collecting the results .
  4. The packet sampling processing unit operates as sFlow agent communication system according to claim 3, to the control unit, transmits the sFlow datagrams conform to the specified sampling condition.
  5. Said control device, said for certain forwarding node, the communication system according to claim 1 or 2 for setting a plurality of processing rules subdivided for analysis of packets that are subject to the statistics.
  6. Wherein the control device, based on the analysis result of the packet that is the subject of the statistical information, to transfer node that is the input end of the over-traffic identified using the network topology information, the cause of the excessive traffic It is in 5 any one communication system of claim 1 for setting a processing rule to suppress the forwarding of the packet are.
  7. Performs processing of the received packets using a compatible processing rules to the received packet, is connected to a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules,
    On the basis of the statistics on packets collected from each forwarding node, to initiate the analysis of packets that are subject to the statistics to a particular forwarding node, wherein the specific forwarding node receives the analysis result output control apparatus.
  8. Based on the analysis of packets that are subject to the statistical information, to transfer node of the input side of the excess traffic identified using the network topology information, suppressing the transfer of packets that are causing the excess traffic the control system of claim 7 for setting the processing rules to be.
  9. Wherein for a particular forwarding node, by specifying sampling condition, indicates the start of the sampling of the packet that is the subject of the statistical information,
    Wherein the packet sampling processing unit of a particular forwarding node, to execute the sampling of packets according to the sampling conditions, the control device according to claim 7 or 8 for collecting the results.
  10. Wherein for a particular forwarding node, the control device according to claim 7 or 8 for setting a plurality of processing rules subdivided for analysis of packets that are subject to the statistics.
  11. Based on the analysis of packets that are subject to the statistical information, to transfer node that is the input end of the over-traffic identified using the network topology information, the packet causing the said excess traffic any one of the control apparatus of claims 7 to set a processing rule to suppress the transfer 10.
  12. Performs processing of the received packets using a compatible processing rules to the received packet, executed by a computer constituting the control device connected to a plurality of transfer node comprising a packet processing unit that takes the statistics of the packet to which the said processing rules a program to be,
    A process of collecting statistical information of the packet from the respective forwarding node,
    Wherein the processing on the basis of the statistics on packets collected from each forwarding node to initiate analysis of the packet that is the subject of the statistics to a particular forwarding node,
    Wherein the particular transfer node, the program for executing the process of receiving and outputting the analysis result.
  13. Performs processing of the received packets using a compatible processing rules to the received packet, a plurality of forwarding nodes and connected control device comprising a packet processing unit that takes the statistics of the packet to which the said processing rules, wherein each forwarding node a step of collecting statistical information of the packet from,
    A step of based on said statistics on packets collected from each forwarding node to initiate analysis of the packet that is the subject of the statistics to a particular forwarding node,
    Wherein the particular transfer node, a traffic monitoring method comprising the steps of receiving and outputting the analysis result.
PCT/JP2011/056822 2010-03-24 2011-03-22 Communication system, control device and traffic monitoring method WO2011118575A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2010068904 2010-03-24
JP2010-068904 2010-03-24

Publications (1)

Publication Number Publication Date
WO2011118575A1 true true WO2011118575A1 (en) 2011-09-29

Family

ID=44673126

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/056822 WO2011118575A1 (en) 2010-03-24 2011-03-22 Communication system, control device and traffic monitoring method

Country Status (1)

Country Link
WO (1) WO2011118575A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225856A (en) * 2012-04-23 2013-10-31 Huawei Technologies Co Ltd Method, apparatus and system for use for flow statistics
WO2014141004A1 (en) * 2013-03-15 2014-09-18 International Business Machines Corporation Load balancing for physical and virtual networks
JP2014171088A (en) * 2013-03-04 2014-09-18 Ntt Comware Corp Network monitoring device, service provision system, network monitoring method, and network monitoring program
WO2015029420A1 (en) * 2013-08-26 2015-03-05 日本電気株式会社 Communication apparatus, communication method, control apparatus and management apparatus in communication system
WO2015029419A1 (en) * 2013-08-26 2015-03-05 日本電気株式会社 Management apparatus and method in communication system
US9104643B2 (en) 2013-03-15 2015-08-11 International Business Machines Corporation OpenFlow controller master-slave initialization protocol
US9118984B2 (en) 2013-03-15 2015-08-25 International Business Machines Corporation Control plane for integrated switch wavelength division multiplexing
US9444748B2 (en) 2013-03-15 2016-09-13 International Business Machines Corporation Scalable flow and congestion control with OpenFlow
US9590923B2 (en) 2013-03-15 2017-03-07 International Business Machines Corporation Reliable link layer for control links between network controllers and switches
US9609086B2 (en) 2013-03-15 2017-03-28 International Business Machines Corporation Virtual machine mobility using OpenFlow
US9769074B2 (en) 2013-03-15 2017-09-19 International Business Machines Corporation Network per-flow rate limiting
US9819578B2 (en) 2013-08-26 2017-11-14 Nec Corporation Communication device and method in a communication system, and device and method for communication path control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008060672A (en) * 2006-08-29 2008-03-13 Nippon Telegr & Teleph Corp <Ntt> Passing packet monitor and monitoring method
JP2009117929A (en) * 2007-11-02 2009-05-28 Nippon Telegr & Teleph Corp <Ntt> Unauthorized access monitoring device and method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008060672A (en) * 2006-08-29 2008-03-13 Nippon Telegr & Teleph Corp <Ntt> Passing packet monitor and monitoring method
JP2009117929A (en) * 2007-11-02 2009-05-28 Nippon Telegr & Teleph Corp <Ntt> Unauthorized access monitoring device and method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KAZUHIRO OKURA ET AL.: "Design of a Hierarchical Network Monitoring Technique", 2006 IEICE COMMUNICATIONS SOCIETY CONFERENCE KOEN RONBUNSHU 2, 7 September 2006 (2006-09-07), pages 130, XP031910919, DOI: doi:10.1109/TRANSDUCERS.2011.5969594 *
NICK MCKEOWN ET AL.: "Enabling Innovation in Campus Networks", OPENFLOW, 14 March 2008 (2008-03-14), XP055091294, Retrieved from the Internet <URL:http://www. openflow.org//documents/openflow-wp-latest.pdf> [retrieved on 20110426], DOI: doi:10.1145/1355734.1355746 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225856A (en) * 2012-04-23 2013-10-31 Huawei Technologies Co Ltd Method, apparatus and system for use for flow statistics
US9491068B2 (en) 2012-04-23 2016-11-08 Huawei Technologies Co., Ltd. Method, apparatus, and system for flow measurement
JP2014171088A (en) * 2013-03-04 2014-09-18 Ntt Comware Corp Network monitoring device, service provision system, network monitoring method, and network monitoring program
US9444748B2 (en) 2013-03-15 2016-09-13 International Business Machines Corporation Scalable flow and congestion control with OpenFlow
US9614930B2 (en) 2013-03-15 2017-04-04 International Business Machines Corporation Virtual machine mobility using OpenFlow
US9104643B2 (en) 2013-03-15 2015-08-11 International Business Machines Corporation OpenFlow controller master-slave initialization protocol
US9110866B2 (en) 2013-03-15 2015-08-18 International Business Machines Corporation OpenFlow controller master-slave initialization protocol
US9118984B2 (en) 2013-03-15 2015-08-25 International Business Machines Corporation Control plane for integrated switch wavelength division multiplexing
US9407560B2 (en) 2013-03-15 2016-08-02 International Business Machines Corporation Software defined network-based load balancing for physical and virtual networks
US9769074B2 (en) 2013-03-15 2017-09-19 International Business Machines Corporation Network per-flow rate limiting
WO2014141004A1 (en) * 2013-03-15 2014-09-18 International Business Machines Corporation Load balancing for physical and virtual networks
US9503382B2 (en) 2013-03-15 2016-11-22 International Business Machines Corporation Scalable flow and cogestion control with openflow
US9590923B2 (en) 2013-03-15 2017-03-07 International Business Machines Corporation Reliable link layer for control links between network controllers and switches
US9596192B2 (en) 2013-03-15 2017-03-14 International Business Machines Corporation Reliable link layer for control links between network controllers and switches
US9609086B2 (en) 2013-03-15 2017-03-28 International Business Machines Corporation Virtual machine mobility using OpenFlow
WO2015029419A1 (en) * 2013-08-26 2015-03-05 日本電気株式会社 Management apparatus and method in communication system
WO2015029420A1 (en) * 2013-08-26 2015-03-05 日本電気株式会社 Communication apparatus, communication method, control apparatus and management apparatus in communication system
US9819578B2 (en) 2013-08-26 2017-11-14 Nec Corporation Communication device and method in a communication system, and device and method for communication path control

Similar Documents

Publication Publication Date Title
Van Adrichem et al. Opennetmon: Network monitoring in openflow software-defined networks
US20080019283A1 (en) Performance Measurement in a Packet Transmission Network
US20130010600A1 (en) Controller Driven OAM for OpenFlow
US20140325649A1 (en) Method and system to dynamically detect traffic anomalies in a network
US20060050702A1 (en) Packet communication method
Sgambelluri et al. OpenFlow-based segment protection in Ethernet networks
US20110261723A1 (en) Network system, controller, method and program
US20110267952A1 (en) Dynamic latency-based rerouting
US20070271374A1 (en) Statistical information collecting system and apparatus thereof
US8670326B1 (en) System and method for probing multiple paths in a network environment
Rasley et al. Planck: Millisecond-scale monitoring and control for commodity networks
Yu et al. Flowsense: Monitoring network utilization with zero measurement cost
US7478156B1 (en) Network traffic monitoring and reporting using heap-ordered packet flow representation
US20130304915A1 (en) Network system, controller, switch and traffic monitoring method
WO2011108205A1 (en) Communication system, path control apparatus, packet forwarding apparatus and path control method
WO2011118585A1 (en) Information system, control apparatus, method of controlling virtual network, and program
US20080279111A1 (en) Collecting network traffic information
US20120257529A1 (en) Computer system and method of monitoring computer system
Phemius et al. Monitoring latency with openflow
US20120201140A1 (en) Network system, controller, method, and program
US20070177600A1 (en) Traffic control method, apparatus, and system
US20130064079A1 (en) Network-Wide Flow Monitoring in Split Architecture Networks
WO2012077259A1 (en) Communication system, control device, node controlling method and program
WO2012023292A1 (en) Communication system, controller, node controlling method and program
US20160149788A1 (en) Passive Performance Measurement for Inline Service Chaining

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11759380

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11759380

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: JP