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  • OID
    OID SNMP MIB files describe the structure of the management data of a device subsystem they use a hierarchical namespace containing object identifiers OID Each OID identifies a variable that can be read or set via SNMP MIB s use

    Original URL path: http://itransformers.net/print/45 (2016-04-25)
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  • netTransformer is now available
    0 5 and bgpPeeringMap version 0 2 Besides that it supports a number of new features such as ranking algorithms improved configurability better network activation and several BGP peering Map enhancements Find out more about netTransformer ideology here If you find it interesting please have a look also on the user guide Follow the Ready set and go section and tell us what do you think about it Soon we

    Original URL path: http://itransformers.net/print/74 (2016-04-25)
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  • netTransformer ideology
    social links or just links between documents The network state can be captured and uploaded in a certain data model Once captured the network state could be previewed so YOU the network stakeholder can reason about it If there is a need you can even change it The change is actually a trigger of a transformation process to an another state After the change happens you might want again to review your current network state to reason about it and so on until each and every node and link of the network disappears The described lifecycle is nothing else but a transformation from one state to another The transformation could happen in many different ways and could be driven by many different reasons Typically each network stakeholders has his own context and his own reasons why he would like to change certain network state In the IP networking world the reason for the change could be for example the introduction of a new service into the network a network extension to new geographical areas or the ongoing global network transformations as the one from IPv4 to IPv6 Another good example of a network transformation that will happen is from an

    Original URL path: http://itransformers.net/print/73 (2016-04-25)
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  • netTransformer ideology | iTransformers.net
    Internet human profiles or HTML in the global WWW The links could be cables routing protocols neighbourships social links or just links between documents The network state can be captured and uploaded in a certain data model Once captured the network state could be previewed so YOU the network stakeholder can reason about it If there is a need you can even change it The change is actually a trigger of a transformation process to an another state After the change happens you might want again to review your current network state to reason about it and so on until each and every node and link of the network disappears The described lifecycle is nothing else but a transformation from one state to another The transformation could happen in many different ways and could be driven by many different reasons Typically each network stakeholders has his own context and his own reasons why he would like to change certain network state In the IP networking world the reason for the change could be for example the introduction of a new service into the network a network extension to new geographical areas or the ongoing global network transformations as the one

    Original URL path: http://itransformers.net/taxonomy/term/59 (2016-04-25)
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  • netTransformer source code
    SVN tool and checkout netTransformer source code from the following URL svn checkout svn svn code sf net p itransformer itransformer trunk itransformer itransformer Once ready you should have a directory structure similar to the one bellow Open the project with Intellij IDEA Download the most recent version of the community edition of the software Start Intellij and navigate to the file menu netTransformer build process has been organized through maven Thus here you have to choose Import a project from an external model and then to choose maven Navigate to the trunk folder that has been checkout from the svn Do not change anything else and click the Next button On the next step you will be asked to select a maven project to be imported You should see one maven project called iTransformers iTransformer On the next step you have to enter netTransformer as a project name Click finish If you are an Eclipse fan you should be capable to do something similar in Eclipse Building the project Navigate to the Build menu and press Make Navigate to the module iTopologyManager then go to the package called launcher Navigate to src main java net itransformers topologyviewer gui launcher

    Original URL path: http://itransformers.net/print/77 (2016-04-25)
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  • This, Jen, is the Internet
    the Internet really is Have a look If you want to download the full image 200M png file please double click on the image bellow or click on the following link This has been generated by SNMP polling of BGP

    Original URL path: http://itransformers.net/print/66 (2016-04-25)
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  • About
    specialization in Carnegie Mellon University in Software Architecture Currently Nikolay is dealing more with software then with networking acting as a SaaS architect Continuous Integration and Deployment expert for one of the leading network monitoring vendors in the world In his spare time Nikolay also teach in New Bulgarian University Vasil is a Physicist with amazing software development skills As developer enjoys Java and Java EE world Vasil has a lot of experience in Java Java EE embedded world OSGI applications for financial institutions and customs Last 5 years Vasil has worked in the OSS BSS world as a Senior Software developer for Comptel Corporation and as a Team lead for SevOne Programista In Comptel Vasil was one of the key experts in Comptel Instantlink Network Element Interface development and provisioning fulfillment business logics design and implementation In SevOne Vasil and his team have reborn the SevOne SaaS solution by developing a generic provisioning engine and inventory system from scratch Vasil is a PhD holder in Physics from Sofia University As part of his PhD he has developed a Monte Carlo simulation code written in C of electrical breakdown phenomena in a Plasma Focus devices He has also worked together with the plasimo group on a framework for plasma simulations Together Nikolay and Vasil enjoy contributing to software and networking society and has developed a number of open source software applications and libraries Their source software projects range from a framework for network discovery automation and configuration to libraries for expect and SNMP and enterprise Java web applications DDOS protection component At certain point they were interested in Internet mapping so a tool for generation of a graphml Internet maps from MRT dumps of Internet routers like bird or quagga was created More specifically the open source projects developed by

    Original URL path: http://itransformers.net/print/1 (2016-04-25)
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  • User Guide
    menu Project Management section New Project allows the user to create a new network project For more information please refer to Step 2 Create a new network project Open Project allows the user to open an existing network project Once selected the user will be prompted to choose a project file with a pfl extension Figure 17 Open an existing network project Close Project closes an already opened project Graph Management section Open Graph allows the user to open an already discovered version of the network netTransformer allows the user to open multiple graphs in multiple tabs Close Graph allows the user to close an already opened graph Diff Graph allows the user to create a network diff between any two versions of the discovered network Once selected the diff dialog will appear Then the user has to select the graphmls file of the versions that will be a subject to the diff Figure 18 Configure a network diff Once the Start button has been clicked a diff progress bar will be displayed Figure 19 Network diff running Once the diff has finished you will see a view like the one bellow Figure 20 Graphical representation of a network diff Note that in order to view the diff tooltips showing what has been added deleted or changed you will have to select the diff filter from the down panel Viewer Settings allows the user to edit the Viewer XML file Here you may add new or change existing topology filters icons and node rightclicks Viewer settings are edited through netTransformer configuration manager Export to allow the user to export the current graph view to a jpeg or png image file formats Exit closes netTransformer Discoverers SNMP Network Discovery SNMP Network discovery is the part of netTransformer responsible for discovering customer s network Its algorithm is designed around the idea that each network consists of one or more nodes that are linked between each other SNMP Network discovery implements a complex network algorithm based around the idea that giving just a single network node as an input shall be sufficient for discovering a whole network It does not need a range of IP addresses to fire up That is the main difference between our discovery and most of the other open or commercial network discovery tools In order certain network to be discovered netTransformer has to have full network connectivity to each IP address part of the current network infrastructure and common credentials In its initial implementation the algorithm uses just SNMP so in fact to fire up a discovery are needed SNMP community string s and an initial IP address The algorithm will discover the initial ip address will find its neighbors and then will jump up to the neighbor devices will discover their neighbors and so on until the whole network is discovered The discovery is possible by the implementation of various methods for neighbor network device discovery Currently the SNMP network discovery algorithm supports but is not limited to the following discovery methods CDP Cisco Discovery Protocol this method is useful for physical network discovery in Cisco based network LLDP Local Link Discovery Protocol this method is useful for physical network data link network topology discovery in Metro Ethernet network ARP Address Resolution Protocol this method is based on ARP table neighbors discovery Useful but dangerous in certain cases e g when the expected network is too large Use that one with care Have a look on the configuration guide regarding how to customize the network discovery requests in order to skip one or another method MAC Media Access Control this method is based on MAC table neighbors discovery Useful but dangerous in certain cases e g when the expected network is too large Use that one with care Have a look on the configuration guide regarding how to customize the network discovery requests in order to skip one or another method MACtoARP Combination between MAC ARP tables of the device Slash30 31 Method based on calculation of neighbor IP address in point to point networks IP routing table discovery Method based on finding the unique neighbor next hops as per IP route SNMP MIB Note that SNMP MIB on which that method is based is already deprecating so maybe better to focus on the next method ip forwarding table discovery That method is based on ip forwarding MIB It contains more then 10 different methods and is well document in New Discovery Methods development Guide Open Shortest Path First Discovering OSPF routing protocol neighbors Border Gateway Protocol Discovering BGP routing protocol neighbors More information about how to develop your own SNMP network discovery method could be found in New SNMP discovery Methods development Guide Graph Tools Layouts The layouts determine the positional representation of the different nodes and edges of the graph Graph layouts influence the understandability of the network one of the principles in netTransformer ideology FR Layout Implements the Fruchterman Reingold force directed algorithm for node layout For more information please have a look on Fruchterman and Reingold Graph Drawing by Force directed Placement http i11www ilkd uni karlsruhe de teaching SS 04 visualisierung papers fruchterman91graph pdf KK Layout Implements the Kamada Kawai algorithm for node layout Tomihisa Kamada and Satoru Kawai An algorithm for drawing general indirect graphs Information Processing Letters 31 1 7 15 1989 Tomihisa Kamada On visualization of abstract objects and relations Ph D dissertation Dept of Information Science Univ of Tokyo Dec 1988 Circle Layout This Layout implementation positions the nodes equally spaced on a regular circle Spring Layout The SpringLayout package represents a visualization in which the nodes and edges of the graph get alive ISOM Layout Implements a self organizing map layout algorithm based on Meyer s self organizing graph methods Node Search Search by Name Current graph This menu item performs a search into the currently displayed graph The user will see a dropdown with the nodes part of the current graph and has to select a

    Original URL path: http://itransformers.net/print/70 (2016-04-25)
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