The Goals Of The Netml System

Published Date: 02 Nov 2017

NetML is a system that works in the browser with the help of the "cloud" that can be used for the analysis and design of networks. I have found NetML versions for 10 years, but the version available now is the first to include a full graphical editing as well as a rich set of network design and analysis tools.NetML provides a way to navigate through the views of one net work, and through a network of networks. Network and the program itself and provides a way for researchers to develop a network together networks and algorithms for research and educational tools available in purposes.The NetML classes include one layer network design, network design is strong, and the availability of anal-ysis, and loss analysis. It can also be transformed through networks XSLT scripts.

Basic concepts

NetML is a system for network analysis and the design, which runs in a browser with the heavy all accounts in the cloud (Internet server or a network of servers).

Traffic-oriented design networks (not associated oriented).

Navigation and appropriate visualization tools.

Internet sharing of networks and algorithms.

Computing"in-the-cloud" with user access via a browser.

Support for layered networks.

Use of xml as the network description language.

Explanation with Examples

Reader can explore the Internet in NetML system within moments. In particular, there are three examples provided in the warehouse of the network system NetML which are described here as well. The reader can follow the steps listed here before them, using a Web browser, with examples of the same network. Examples are:

An Australian network of universities and research institutes, based loosely on AARNET

The U.S. National carrier network (from a few years ago)

The National Science Foundation network of the United States several years ago.

In all these cases used NetML system to create classes, powerful design using an Ethernet switch, IP, and WDM and optical fiber, including the backup path for each traffic included in the design of each one link fails. Has been processing these designs with the costs and specifications of all the equipment needed to build can be derived from networks to NetML specifications of network design.

Traffic-oriented Design

Will designs for networks above everything to be based on the specified traffic. Became common for networks to be designed to measure traffic on the links and derive the required capacity on these links by estimating traffic levels in the future of these measurements link. And will discuss the benefits of traffic-oriented design below in subsection II-B and also considered the sub-section VI-A.

THE GOALS OF THE NETML SYSTEM

The system aims NetML both teaching and research. It is a tool graphical editor, and analysis and design and visualization of networks

Many accounts that need to be done routinely in order to understand a very complex network so that can not be done manually. An important example of such an algorithm is the shortest tracks account, that server NetML able to do for all pairs of origin and destination in a large network very quickly, by Floyd algorithm.

If a tool available to do the accounts and submit them to the user in an appropriate form, the user (a person involved in the management, design and conduct research or in networks) will be able to integrate these algorithms in practice. In fact, the system NetML provides an extension of the network-related forces the user's thinking.

Other Products

1) Vector graphics tools: At first glance it seems system NetML such as a graphical editor for graphs, or maybe vector graphics. There are many tools like this, for example Visio amicably, and Inkscape. Objectives NetML system is completely different from these tools.

First of all, the main purpose of NetML not CRE, eat charts that can be printed or included in other documents, but to create a network and document description.

That can be analyzed by analyzing important networks and design algorithms? These algorithms estimate the direction that is likely to happen, and traffic statistics estimate that will flow in each link, including the extent of traffic will be lost. Algorithms also include one to estimate the lack of end-to-end performance across the network and routing layers and analysis tool that can be used to determine the location and capabilities of the various drop-ins.

Second, the emergence of network, particularly in network elements, in system NetML, and converted from its usual aesthetic works rather than a means of communicating information about a complex network is difficult to understand for users by other means. There are many aspects of the operation of a network that are difficult to understand, and can transfer many of these easily chart.

For example, allows NetML path followed by a specific traffic, or traffic flows carried by the presence of a specific link, to be displayed. In Figure (1) and selected links are followed by a stream of traffic in the upper part of the diagram, and at the same figure, the collection traffic flows through a link from CO_UT WA) is the only one currently displayed. In both cases, the building are displayed representing a group, and thus can be extremely difficult to visualize. The support of the visual tool to view these constructs are highly effective for a way to improve visualization.

There is another important difference between NetML traditional graphical editor is that even in the case of networks, humble and usually most of the information in the network to be hidden. This is because even in small networks there will be often much more information can actually be displayed at one time. However, by allowing the user to easily choose what information you want to show, and this problem can be overcome. Can the depth and breadth of the entire internal information and information from the network presented graphically and perception, and not in a single view, but instead in a series of views, and selected by the user.

2) Similar Network design and analysis tools: There are many other graphic network design and analysis tools available, although most of these are confined to simulation. Most of these tools are commercial products, like OPNET and NPAT while a small number of them are open sourced, such as Nam (the network visualization tool of NS2) and OMNeT++ . Each of these tools depends on a specific platform and has its own network format, which introduces many difficulties when people using different tools collaborate together. Moreover, a single tool does not usually have all the required features on large network design and analysis task, programing among different tools costs lots of time and human resource. The use of an xml based language for network description potentially addresses this issue of inter-transfer of network specifications.

Traffic-oriented Network Design

Current practice is often link-oriented network design, in the sense that the network administrator’s predom-inantly traffic control link and link upgrades Institute when levels exceed specified threshold traffic loads. Traffic-oriented design is the practice of sculpture LG network the design options information about service requests from network clients, as summarized in the form of traffic. Principle which should be based on network design is based on a strong foundation want its own client. Traffic is a powerful abstraction to summarize the demands of customer service on the network. Can movement which is based on links be misleading because it includes reflects the structure of the existing network and design

NETML SYSTEM FUNCTIONALITY

A. Research applications

Communication across networks consisting of fiber optic, and wireless media, and routers and switches of many varieties continues to expand as a percentage of human activity. We continue to invest more time and resources we have in digital communications and additional successes currently made by the virtual world into areas previously dominated by the physical world. In particular, while expanding online shopping by browsing through shops declines facility.

Rate of increase in data rates that have been created by individual users also have not slowed down, but instead on the likely accelarated recently by the publication widepsread of 3G phones and 4G, which is more than capable of full load for wireless networks that are connnected.

As a result, networks and benefit from the increased mix of full waves, and SDH channels from a variety of sizes, and dark fiber, as well as the use of shared access over TCP / IP networks. How make the right choices from a variety of such a challenge and requires clearly computer support.The concept routing layers helps to impose some structure on this variety of options that then Al lowest level for optimization of a rigorous process mathematically, and described below in Section III-D3

.

1) Imagine: the main reason why necessary visualisationtools to networks is that the complexity of these structures are too big to be submitted in a single diagram. It is therefore necessary to provide tools that allow being selected and different points of view, and, going beyond simply choosing views, and we need to enable the user to build and store views of the network.

The checks usually animation by creating a series of images then displaying these images one after the other - all for only a short period. However, another method useful for animation which is a little easier to implement is to generate a series of images that represent separate network development with the passage of time. These pictures should not be compatible with the moments in time that are very close together.

2) Search network: the importance of networks, research networks, is a phenomenon all over the world. As research into microbiology, or climate, or neurological science and benefit from all over the world to exchange ideas and data and change the shape and color of network elements, and techniques, and the same thing applies to the study of networks. There convert the network (for example through XSLT is a need for data network site where algorithms can be converted and maybe then asked to be shared, and system NetML provides such a service.

B. Educational Applications

A thorough understanding of how networks work really hard to convey and it is not uncommon, for the time being, the network of qualified staff to have an understanding incomplete and ineffective. As well as the inherent complexity of networking concepts, we have to face the problem that the whole field has developed only recently, and therefore not the best way to explain important concepts discovered so far.

Here are some examples of difficult concepts that are often incomprehensible: VLAN for network address translation (masquerading), and Virtual Private Networks, Label Switching. Often are treated each of these and other concepts, with through the form which captures only about full technical details.

If you see these concepts, and a host of others, and that students of mass technical details have nothing to do, it is likely that the art network management will remain closer to black magic than science.

At present there is a strong movement to adopt, more and more widely, an approach to education that is strongly associated with specific companies: Certificates seller. This has its own problems: in particular, it is difficult to see how the coaching staff with the education that emphasizes on a specific set of products can be objective when considering alternatives.

1) Network analysis and design teaching: at the present time it is difficult to convey to a sound understanding of how to operate the networks. The diversity and complexity of the protocols currently used are more than enough to cause conges tion of university education for engineers or computer scientists. As a result, network managers and users on low confidence in the expertise of qualified professional’s networks correctly. This is one of the reasons for the popularity of high industry certification programs, although it is recognized that the testimony of the industry often not in favor of restricting the viewpoint IT-signals profes product range to a specific organization.

Moreover, the bulk of the difficulty in understanding the big picture. How different layers of the network technology to work together to provide end-to-end functions users want? For this purpose and a tool that allows users to see all of the big picture and the details, and how the layers work together, is the educational value of the aid.

C. System Design

The complete design description of system NetML in a separate document. The design of the program. Educational applications

A thorough understanding of how networks work really hard to convey and it is not uncommon, for the time being, the network of qualified staff to have an understanding incomplete and ineffective. As well as the inherent complexity of networking concepts, we have to face the problem that the whole field has developed only recently, and therefore not the best way to explain important concepts discovered so far.

Here are some examples of difficult concepts that are often incomprehensible: VLAN for network address translation (masquerading), and Virtual Private Networks, Label Switching. Often are treated each of these and other concepts, with through the form which captures only about full technical details.

If you see these concepts, and a host of others, and that students of mass technical details have nothing to do, it is likely that the art network management will remain closer to black magic than science.

At present there is a strong movement to adopt, more and more widely, an approach to education that is strongly associated with specific companies: Certificates seller. This has its own problems: in particular, it is difficult to see how the coaching staff with the education that emphasizes on a specific set of products can be objective when considering alternatives.

1) Network analysis and design teaching: at the present time it is difficult to convey to a sound understanding of how to operate the networks. The diversity and complexity of the protocols currently used are more than enough to cause conges tion of university education for engineers or computer scientists. As a result, network managers and users on low confidence in the expertise of qualified professional’s networks correctly. This is one of the reasons for the popularity of high industry certification programs, although it is recognized that the testimony of the industry often not in favor of restricting the viewpoint IT-signals profess product range to a specific organization.

Moreover, the bulk of the difficulty in understanding the big picture. How different layers of the network technology to work together to provide end-to-end functionality that users want? For this purpose and a tool that allows users to see all of the big picture and the details, and how the layers work together, is the educational value of the aid.

Characteristics of network elements, such as color, clarity, presentation, and so on, from the network element, common to the contract, and links, and traffic streams.

2) XML and XSLT: externally, networks are stored in

XML format which we refer to in this paper as NetML. This has many advantages. Full representation of XML Also uses. Network, in both the client and the server, through the use of standard tools that can be used to analyze the XML file to the internal data structure. This means that the transport networks of the client to the server and is directly opposite - the network is sent as

String, which contains a representation network NetML.

Another advantage of using XML is that we can take advantage of powerful tools such as XPATH and XSLT. It uses widely in XPATH client; we use XSLT widely in the server. For example, to find, on the client, and called on all links with the parent node SF, XPath expression

"/ NML: network / links / link [origin = 'SF'] is used".

3) GWT and SVG: in order to take advantage of the graphical user interface in response browser must take advantage of the AJAX approach to the use of the browser, where the browser is used JavaScript engine to change the image displayed by the browser without refreshing the whole page. In the development of system NetML, and Google Web Tools [14] is used to provide access to the JavaScript engine in the browser through a program written in Java. In fact, the Web Toolkit Google AJAX API encapsulates. Has proved a Google Web Tools to be very effective for this purpose. Java code production effectively, and that it is possible to develop powerful functions in Java code relatively transparent, with recourse only moderate to functions written in JavaScript.

Until recently, the display of vector graphics-oriented within the browser would not have been possible. However, recent versions of