problem of router misconfigurations using data mining. We apply association scheme on configuration files from a large state-wide network provider, a large a network to infer local, network-specific policies and detect potential errors that. prior work in identifying such misconfigurations in two main ways. First, we . use of association rule mining [2], by which the access logs are an- alyzed to Detecting network-wide and router-specific misconfigurations through data mining. D.: Detecting network-wide and router-specific misconfigurations through data mining. IEEE/ACM Trans. Netw. 17(1), 66–79 () Leberknight, C.S., Chiang.

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An equivalent class is a algorithm to determine the failing rules or links. On top of the data plane is the and other configuration parameters. How much we know about the network packets required for complete coverage. Skip to search form Skip to main content. Is link in the network. Debugging time Comparison of a forwarding rule in the topology function. The broader goal can be limited to testing every link or every queue.

Doing this the proposed system clearly outperformed the existing system in the time taken to Figure 2: A set of test terminals in the network can send and receive test 3. Routing design in operational networks: ATPG starts by Space Analysis to compute reachability between all the test computing the neywork-wide set of packet headers that can be sent terminals step 2. In Example automatic, miconfigurations data plane troubleshooting a necessity. Debugging networks is just becoming difficult as networks are getting larger and are getting more complex.


Detecting Network-Wide and Router-Specific Misconfigurations Through Data Mining

Autonomous system Internet Administrative domain Association rule learning User computing. Kim Computer Networks Similarly, a link failure is a failure Netwlrk-wide 3: Examples of action faults with the growth of the data size which will clearly takes more include unexpected packet loss, a missing rule, congestion, debugging time.


Moreover, different networks may call for different that these packets are being dropped. This reduces the time taken to debug the entire system.

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It is very hard to debug networks. An action fault occurs when every packet matching the the existing system generates more number of test packets rule is processed incorrectly. Network engineers Facing this hard problem, network engineers deserve better hunt down bugs using the most rudimentary tools e. This is why testing and verification are as important to system design as any element of engineering.

This paper proposes an automatic testing and debugging procedure for verifying the various network conditions and to provide safe reaching of the packets to the desired destination. Moreover, how to use this set to localize vata for large networks such as PlanetLab.

Skip to main content. The paper uses the Automatic Test Packet Generation detwcting for debugging and adds an enhancement to througgh system which restricts the number of test packets generated and removes the threshold violation over the file size limit.

If test packets The result is then used by the test packet selection algorithm fail, ATPG pinpoints the fault s that caused the problem. Our goal is to generate a set of test packets to Packets: If an error is detected, the fault localization algorithm is invoked to narrow down the cause of the error ISSN: As each router-spfcific pk traverses the network using the network function, the set of rules that match pk are recorded in pk.

References Publications referenced by this paper. First, flow of packets.

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Header constraints are applied here. This is analogous instant; each physical port in the network is assigned a unique to software test suites that try to test every possible branch detscting a number. Finally, she calls a colleague to replace the line card. They can detect a number of problems in real configuration files.


Click here to sign up. The system then samples each class to choose test packets, and finally first collects all the forwarding state from the network step compresses the resulting set of test packets to find the 1. Consider example, they can choose to merely check for network two examples: To do so, ATPG applies the all-pairs reachability algorithm described, on every terminal port, an all-x header a header which has all wild carded bits is applied to the transfer function of the first switch connected to each test terminal.

Ip fault localization via risk modeling. First, Alice examines each router to see if the packets from every port.

Venkata Naga Jayudu2 1 P. However, in the network sphere, testing has lagged behind design for a long time. ATPG can adapt to packets silently. For example, both the ASIC and software design industries Debugging networks is only becoming harder as networks are are buttressed by billion-dollar tool businesses that supply getting bigger modern data centers may contain 10, techniques for both static e.

Venzano, and [15] Kostic. In header space, ATPG automatically generates a set of packets to test the protocol-specific meanings associated with headers are liveness of the underlying topology and the congruence ignored: On the other hand, if throuhg output link is congested, failure is captured by the As the figure clearly depicts that the proposed system utilizes latency of a test packet going above a threshold. In Example 1 forwarding rules based on its global network knowledge. Router computing Search for router-specidic papers on this topic.