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  • virtual function call from base class

    - by Gal Goldman
    Say we have: Class Base { virtual void f(){g();}; virtual void g(){//Do some Base related code;} }; Class Derived : public Base { virtual void f(){Base::f();}; virtual void g(){//Do some Derived related code}; }; int main() { Base *pBase = new Derived; pBase-f(); return 0; } Which g() will be called from Base::f()? Base::g() or Derived::g()? Thanks...

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  • C++ Add this pointer to a container by calling it in base class constructor

    - by vivekeviv
    class Base { public: Base (int a, int b); private: int a,b; }; class Derived1 { public: Derived1():base(1,2){} }; similarly Derived2, Derived 3 which doesnt contain any data members on its own Now i need to contain these derived objects in a singleton, so i was thinking to call this in base constructor like Base::Base(int a, int b) { CBaseMgr::GetInstance()->AddtoVector(this); } so now if i construct Derived d1, d2, d3 etc. will the Singleton's container contain all derived objects? My doubt is can i do this adding of objects to container in base ctor or should i do in derived ctor.?

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  • Firefox: Can I use a relative path in the BASE tag?

    - by Aaron Digulla
    I have a little web project where I have many pages and an index/ToC file. The toc file is at the root of my project in toc.html. The pages are spread over a couple of subdirectories and include the toc with an iframe. The project doesn't need a web server, so I can create the HTML in a directory and browse it in my browser. The problem is that I'm running into XSS issues when JavaScript from the toc.html wants to call a function in a page (violation of the same origin policy). So I added base tags in the header with a relative URL to the directory in which toc.html. This works for Konqueror but in Firefox, I have to use absolute paths or the toc won't even display :( Here is an example: <?xml version='1.0' encoding='utf-8' ?> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <base href="../" target="_top" /> <title>Project 1</title> </head> <body> <iframe class="toc" frameborder="0" src="toc.html"> </iframe> </body> </html> This is file is in a subdirectory page. Firefox won't even load it, saying that it can't find page/toc.html. Is there a workaround? I would really like to avoid absolute paths in my export to keep it the same everywhere (locally and when I upload it on the web server later).

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  • BUILD 2013 Session&ndash;Testing Your C# Base Windows Store Apps

    - by Tim Murphy
    Originally posted on: http://geekswithblogs.net/tmurphy/archive/2013/06/27/build-2013-sessionndashtesting-your-c-base-windows-store-apps.aspx Testing an application is not what most people consider fun and the number of situation that need to be tested seems to grow exponentially when building mobile apps.  That is why I found the topic of this session interesting.  When I found out that the speaker, Francis Cheung, was from the Patterns and Practices group I knew I was in the right place.  I have admired that team since I first met Ron Jacobs around 2001.  So what did Francis have to offer? He started off in a rather confusing who’s on first fashion.  It seems that one of his tester was originally supposed to give the talk, but then it was decided that it would be better to have someone who does development present a testing topic.  This didn’t hinder the content of the talk in the least.  He broke the process down in a logical manner that would be straight forward to understand if not implement. Francis hit the main areas we usually think of such as tombstoning, network connectivity and asynchronous code, but he approached them with tools they we may not have thought of until now.  He relied heavily on Fiddler to intercept and change the behavior of network requests. Then there are the areas you might not normal think to check.  This includes localization, accessibility and updating client code to a new version.  These are important aspects of your app that can severely impact how customers feel about your app.  Take the time to view this session and get a new appreciation for testing and where it fits in your development lifecycle. del.icio.us Tags: BUILD 2013,Testing,C#,Windows Store Apps,Fiddler

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  • MVC and individual elements of the model under a common base class

    - by Stewart
    Admittedly my experience of using the MVC pattern is limited. It might be argued that I don't really separate the V from the C, though I keep the M separate from the VC to the extent I can manage. I'm considering the scenario in which the application's model includes a number of elements that have a common base class. For example, enemy characters in a video game, or shape types in a vector graphics app. The view wants to render these elements. Of course, the different subclasses call for different rendering. The problem is that the elements are part of the model. Rendering them is conceptually part of the view. But how they are to be rendered depends on parameters of both: Attributes and state of the element are parameters of the model User settings are parameters of the view - and to support multiple platforms and/or view modes, different views may be used What's your preferred way of dealing with this? Put the rendering code in the model classes, passing in any view parameters? Put the rendering code in the view, using a switch or similar to select the right rendering for the model element type? Have some intermediate classes as a model-view interface, of which the model will create objects on demand and the view will then render them? Something else?

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  • Code base migration - old versioning system to modern

    - by JohnP
    Our current code base is contained in a versioning system that is old and outdated (Visual Sourcesafe 5.0, mid 1990's), and contains a mix of packages that are no longer used, ones that are being used but no longer updated, and newer code. It is also a mix of 4 languages, and includes libraries for some of our systems (Such as Dialogic, Sun Tzu {clipper}) implementations. This breaks down into the following categories: Legacy code - No longer used (Systems that have been retired or replaced, etc) Legacy code - In current use (No intentions for upgrades or minor bug fixes, only major fixes if needed) Current code - In current use, and will be used for future versions/development Support libraries - For both legacy and current code (Some of the legacy libraries are no longer available as well) We would like to migrate this to a newer versioning system as we will be adding more developers, and expanding the reach to include remote programmers. When migrating, how do you structure it? Do you just perform a dump of all the data and then import it into the new system, or do you segregate according to type before you bring it into the new system? Do you set up a separate area for libraries, or keep them with the relevant packages? Do you separate by language, system, both? A general outline and methodology is fine, it doesn't need to be broken down to individual program level.

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  • IIS 7 (Windows Server 2008) no entrega javascript ni css

    - by José Marcos García Espinosa
    Hace algunos días, jugando con las configuraciones del IIS, revolvíamos las opciones de compresión de contenidos. La intención era habilitar gzip para el contenido estático pero la cosa salió tan mal que el portal, en vez de reducir su tamaño por los contenidos comprimidos, lo "redujo" porque el servidor dejó de enviar los archivos javascript y las hojas de estilo al navegador. Después de estar buscando como hora y media, resultó que la explicación y la solución eran bastante sencillas (y ni siquiera las encontramos nosotros): Al estar cambiando las opciones de compresión de contenidos estáticos del IIS, se crearon unos archivos de configuración (web.config's) tanto en la carpeta de los archivos javascript como en la de las hojas de estilo, que es una estructura que el propio IIS no reconocía y dejaba la aplicación 'cortada', dejando fuera estas carpetas. Eliminar ambos archivos de configuración bastó para volver a visualizar el portal como se debía.. de la compresión, creo que ya ni seguimos buscando.

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  • Calling "Base-Getter" in Overriding Getter of Property

    - by scherand
    I have a base class "Parent" like this: using System; using System.Collections.Generic; using System.Text; namespace ConsoleApplication1 { class Parent { private int parentVirtualInt = -1; public virtual int VirtualProperty { get { return parentVirtualInt; } set { if(parentVirtualInt != value) { parentVirtualInt = value; } } } } } and a child class like this: using System; using System.Collections.Generic; using System.Text; namespace ConsoleApplication1 { class Child : Parent { public override int VirtualProperty { get { if(base.VirtualProperty > 0) { throw new ApplicationException("Dummy Ex"); } return base.VirtualProperty; } set { if(base.VirtualProperty != value) { base.VirtualProperty = value; } } } } } Note that the getter in Child is calling the getter of Parent (or at least this is what I intend). I now use the "Child" class by instantiating it, assigning a value (let's say 4) to its VirtualProperty and then reading the property again. Child c = new Child(); c.VirtualProperty = 4; Console.Out.WriteLine("Child.VirtualProperty: " + c.VirtualProperty); When I run this, I obviously get an ApplicationException saying "Dummy Ex". But if I set a breakpoint on the line if(base.VirtualProperty > 0) in Child and check the value of base.VirtualProperty (by hovering the mouse over it) before the exception can be thrown (I assume(d)), I already get the Exception. From this I convey that the statement base.VirtualProperty in the "Child-Getter calls itself"; kind of. What I would like to achieve is the same behavior I get when I change the definition of parentVirutalInt (in Parent) to protected and use base.parentVirtualInt in the Getter of Child instead of base.VirtualProperty. And I don't yet see why this is not working. Can anybody shed some light on this? I feel that overridden properties behave differently than overridden methods? By the way: I am doing something very similar with subclassing a class I do not have any control over (this is the main reason why my "workaround" is not an option). Kind regards

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  • WebCenter Customer Spotlight: Instituto Mexicano de la Propiedad Industrial

    - by me
    Author: Peter Reiser - Social Business Evangelist, Oracle WebCenter  Solution SummaryInstituto Mexicano de la Propiedad Industrial (IMPI) is a decentralized  federal agency with the goals of protecting and ensuring awareness of industrial property rights in Mexico. IMPI  business objectives were to increase efficiency, improve client service, accelerate services to the public and reduce paper use by digitizing management of necessary documentation for patent and trademark submissions and approvals. IMPI  implemented  Oracle WebCenter Content to develop electronic inquiry service by digitizing and managing documents and a public Web site making patent-related information easily available online. With the implemented solution IMPI increased the number of monthly inquires from 200 in person consultations to 80,000 electronic consultations and the number of trademark record inquiries from 30,000 to 300,000. Company OverviewInstituto Mexicano de la Propiedad Industrial (IMPI) is a decentralized federal agency with the goals of protecting and ensuring awareness of industrial property rights in Mexico. IMPI is responsible for registering and publicizing inventions, distinctive signs, trademarks, and patents. In addition to its Mexico City headquarters, IMPI has five regional offices.  Business Challenges IMPI  business objectives were to increase efficiency by automating internal operations and patent and trademark-related procedures and services, improve client service by simplifying patent and trademark procedures, accelerate services to the public and reduce paper use by digitizing management of necessary documentation for patent and trademark submissions and approvals. Solution DeployedIMPI worked with Oracle Consulting to implement Oracle WebCenter Content to develop electronic inquiry service - services that were previously provided in person only - by digitizing and managing documents. They use Oracle Database 11g, Enterprise Edition to manage data for all mission-critical systems, automating patent and trademark transactions, providing consistent, readily available, and accurate data. IMPI developed a Web site to support newly digitized information with simple and flexible interfaces, making patent-related information easily available online to the public. Business ResultsWith the implemented solution IMPI increased the number of monthly inquires  from 200 in person consultations to 80,000 electronic consultations and the number of trademark record inquiries from 30,000 to 300,000. “Oracle WebCenter Content structure is unique. It lets us separately manage communication with other applications and databases, and performs content management itself. It’s a stable tool, at an appropriate cost, that lets us develop and provide reliable electronic services.” Eugenio Ponce de León, Divisional Director of Systems and Technology, Instituto Mexicano de la Propiedad Industrial Additional Information Instituto Mexicano de la Propiedad Customer Snapshot Oracle WebCenter Content

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  • Découvrir la nouvelle génération CRM ? Connectez-vous au Customer Concepts TV le 24 april 2012

    - by Kinoa
    Accélérer votre stratégie commerciale  Les entreprises doivent repenser leurs processus de vente, optimiser leur performance, augmenter la productivité des équipes et se concentrer sur les opportunités à plus fort potentiel. Danny Rippon, Oracle CRM Solutions Sales Development Director, souhaite partager avec vous la stratégie gagnante dans cette video : la nouvelle génération de CRM. Vous y trouverez des conseils avisés pour tirer au maximum profit de votre CRM. Rejoignez-nous sur Customer Concepts TV ! Pour en savoir plus, visionnez cette video :

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  • My Oracle Support 6.3 - Knowledge Highlights

    - by JanSyss
    My Oracle Support 6.3 was released over the weekend (13-Oct-2012), and with that we released 30+ enhancements and 60+ bug fixes. Most important changes Search Suggestions are auto-correcting spelling errors, more suggestions for 'how to' type questions, enhanced usability to see the suggested additional terms. Improved Knowledge Base region on the My Oracle Support dashboard: recent searches from this region now retain the search attributions (e.g. pre-selected products or release). Search Tip: if the Knowledge Base region doesn't show up as the first region in the right column on the My Oracle Support dashboard, consider personalizing your dashboard to put it first, so that you right there for searching. Specifying the product you are researching an issue for, with optionally version and task as well, makes searches in the majority of the cases more precise. for more information, see my comments in my previous blog on the topic: https://blogs.oracle.com/supportportal/entry/mos_6_2_release Better support for searches on ORA-600 & ORA-700: no longer a difference in results between searching on 'ORA-600 [Arg1]' and 'Ora-00600: Internal Error Code, Arguments: [Arg1]'.

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  • INVITATION: Formez-vous sur la solution Oracle Database Appliance !

    - by mseika
    Formez-vous sur la solution Oracle Database Appliance ! Cher partenaire, Arrow a le plaisir de vous inviter au bootcamp ODA - Oracle Database Appliance - qui aura le 30 octobre prochain à Colombes, dans les locaux d’Oracle France. Venez découvrir comment conquérir de nouveaux marchés grâce à lanouvelle appliance base de données Oracle! Arrow vous propose une demi-journée pour comprendre ODA et démontrer les bénéfices de cette solution accessible à tous. Au programme de cet après-midi de formation : une démonstration réalisée en temps réel sur la machine Arrow, déplacée pour l’occasion et de multiples échanges avec notre spécialiste ODA , Stéphane KIDJO, Consultant Avant-Vente chez Arrow. AGENDA : 14h00 - Accueil-café14h20 – Lancement de la démonstration :• Présentation et installation de l’appliance• Présentation de la solution : positionnement marché, bénéfices• Proposition de valeur• Une solution tarifaire attractive 16h00 - De nouvelles opportunités pour vendre Oracle 11g R2 et ses options 16h30 – Désinstallation de l’appliance 16h45 – Questions & Réponses 17h00 – Echanges autour d’un goûter Ce workshop est gratuit. Pré-inscription obligatoire. Nombre de places limité.

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  • How do you make a private member in the base class become a public member in the base class?

    - by jasonline
    Consider the following code: class Base { void f() { } }; class Derived: public Base { public: }; What can you change in the derived class, such that you can perform the following: Derived d; d.f(); If the member is declared as public in the base class, adding a using declaration for Base::f in the derived class public section would've fix the problem. But if it is declared as private in the base class, this doesn't seem to work.

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  • how to use XML in Sdk for web base application ?

    - by asad26
    hi every one I'm want to know how's correct way to use Xml in sdk for web base application i'm trying to do magazine in iphone but they told me that i have to use XML to take body and other thing from that web site? please some one direct me to that and if you have any tutorial for that thanks

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  • PHP : Symfony sort en version 2.1 définitive, gestion des dépendances avec Composer, formulaires plus efficaces et Mailer plus performant

    Symfony2 est un projet très communautaire, depuis le début (des centaines de bundles étaient disponibles bien avant les premières RC de la 2.0), une tendance qui se confirme : 250 contributeurs, 1 000 pull requests sur GitHub pour la première version beta de Symfony 2.1 ! Après les difficultés de migration avec symfony 1.x, l'équipe a tenté autant que possible de restreindre les changements à même de casser la rétrocompatibilité ; de même, le refactoring du module de formulaires a fait que la version finale de la 2.1 devrait sortir en août, afin de concentrer autant que possible les changements et faire que de plus en plus de code ne devra pas être modifié lors de la migration d'une version à l'autre. Ainsi, n'hésitez pas à tenter de migrer vos applications vers cette beta,...

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  • PHP : Symfony sort en version 2.1 définitive, gestion des dépendances avec Composer, formulaires et Mailer plus performants

    Symfony2 est un projet très communautaire, depuis le début (des centaines de bundles étaient disponibles bien avant les premières RC de la 2.0), une tendance qui se confirme : 250 contributeurs, 1 000 pull requests sur GitHub pour la première version beta de Symfony 2.1 ! Après les difficultés de migration avec symfony 1.x, l'équipe a tenté autant que possible de restreindre les changements à même de casser la rétrocompatibilité ; de même, le refactoring du module de formulaires a fait que la version finale de la 2.1 devrait sortir en août, afin de concentrer autant que possible les changements et faire que de plus en plus de code ne devra pas être modifié lors de la migration d'une version à l'autre. Ainsi, n'hésitez pas à tenter de migrer vos applications vers cette beta,...

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  • Which handsets work with IP DECT base?

    - by waldrumpus
    My workplace uses an Ascom IP DECT base station (IPBS1), and Ascom handsets as well. We're looking to replace some broken handsets; the ones by Ascom, however, are rather expensive, and we're not altogether satisfied with their quality. I've been looking at handsets from other manufacturers, which are much less expensive - however, since I don't know anything about DECT, VOIP, etc, I don't know if they will work with the base. I've perused the base's manual, but found nothing on handset compatibility. How can I find out what kind of handset works with our base?

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  • how to handle base tag target attribute in iphone uiwebview to open new window

    - by user217428
    When the links are supposed to open a new window, iphone uiwebview won't trigger an event when user click these links. We had to use javascript to do some trick to the target attribute of the links. I can handle 'a' tag to open in the '_self' window with the trick without problem. But when I do it the same way with the 'base' tag. it doesn't work. I believe the base target is set by the javascript. But the base tag is in the head, which may be handled by the uiwebview before my javascript executed, so the target change may not reflected in the webkit engine. Could someone please give some suggestion, so I can open the link in the same uiwebview? The following is the sample HTML opened in the uiwebview <html> <head> <base target='_blank'> </head> <body> <a href='http://google.ca'>google</a> </body> </html> The following is the code to be executed in the (void) webViewDidFinishLoad: (UIWebView*)webView static NSString* js = @"" "function bkModifyBaseTargets()" "{" "var allBases = window.document.getElementsByTagName('base');" "if (allBases)" "{" "for (var i = 0; i < allBases.length; i++)" "{" "base = allBases[i];" "target = base.getAttribute('target');" "if (target)" "{" "base.setAttribute('target', '_self');" "}" "}" "}" "}"; [webView stringByEvaluatingJavaScriptFromString: js]; [webView stringByEvaluatingJavaScriptFromString: @"bkModifyBaseTargets()"];

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  • Keyword 'this'(Me) is not available calling the base constructor

    - by serhio
    In the inherited class I use the base constructor, but can't use class's members calling this base constructor. In this example I have a PicturedLabel that knows it's own color and has a image. A TypedLabel : PictureLabel knows it's type but uses the base color. The (base)image that uses TypedLabel should be colored with the (base)color, however, I can't obtain this color: Error: Keyword 'this' is not available in the current context A workaround? /// base class public class PicturedLabel : Label { PictureBox pb = new PictureBox(); public Color LabelColor; public PicturedLabel() { // initialised here in a specific way LabelColor = Color.Red; } public PicturedLabel(Image img) : base() { pb.Image = img; this.Controls.Add(pb); } } public enum LabelType { A, B } /// derived class public class TypedLabel : PicturedLabel { public TypedLabel(LabelType type) : base(GetImageFromType(type, this.LabelColor)) //Error: Keyword 'this' is not available in the current context { } public static Image GetImageFromType(LabelType type, Color c) { Image result = new Bitmap(10, 10); Rectangle rec = new Rectangle(0, 0, 10, 10); Pen pen = new Pen(c); Graphics g = Graphics.FromImage(result); switch (type) { case LabelType.A: g.DrawRectangle(pen, rec); break; case LabelType.B: g.DrawEllipse(pen, rec); break; } return result; } }

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  • Programação paralela no .NET Framework 4 – Parte II

    - by anobre
    Olá pessoal, tudo bem? Este post é uma continuação da série iniciada neste outro post, sobre programação paralela. Meu objetivo hoje é apresentar o PLINQ, algo que poderá ser utilizado imediatamente nos projetos de vocês. Parallel LINQ (PLINQ) PLINQ nada mais é que uma implementação de programação paralela ao nosso famoso LINQ, através de métodos de extensão. O LINQ foi lançado com a versão 3.0 na plataforma .NET, apresentando uma maneira muito mais fácil e segura de manipular coleções IEnumerable ou IEnumerable<T>. O que veremos hoje é a “alteração” do LINQ to Objects, que é direcionado a coleções de objetos em memória. A principal diferença entre o LINQ to Objects “normal” e o paralelo é que na segunda opção o processamento é realizado tentando utilizar todos os recursos disponíveis para tal, obtendo uma melhora significante de performance. CUIDADO: Nem todas as operações ficam mais rápidas utilizando recursos de paralelismo. Não deixe de ler a seção “Performance” abaixo. ParallelEnumerable Tudo que a gente precisa para este post está organizado na classe ParallelEnumerable. Esta classe contém os métodos que iremos utilizar neste post, e muito mais: AsParallel AsSequential AsOrdered AsUnordered WithCancellation WithDegreeOfParallelism WithMergeOptions WithExecutionMode ForAll … O exemplo mais básico de como executar um código PLINQ é utilizando o métodos AsParallel, como o exemplo: var source = Enumerable.Range(1, 10000); var evenNums = from num in source.AsParallel() where Compute(num) > 0 select num; Algo tão interessante quanto esta facilidade é que o PLINQ não executa sempre de forma paralela. Dependendo da situação e da análise de alguns itens no cenário de execução, talvez seja mais adequado executar o código de forma sequencial – e nativamente o próprio PLINQ faz esta escolha.  É possível forçar a execução para sempre utilizar o paralelismo, caso seja necessário. Utilize o método WithExecutionMode no seu código PLINQ. Um teste muito simples onde podemos visualizar a diferença é demonstrado abaixo: static void Main(string[] args) { IEnumerable<int> numbers = Enumerable.Range(1, 1000); IEnumerable<int> results = from n in numbers.AsParallel() where IsDivisibleByFive(n) select n; Stopwatch sw = Stopwatch.StartNew(); IList<int> resultsList = results.ToList(); Console.WriteLine("{0} itens", resultsList.Count()); sw.Stop(); Console.WriteLine("Tempo de execução: {0} ms", sw.ElapsedMilliseconds); Console.WriteLine("Fim..."); Console.ReadKey(true); } static bool IsDivisibleByFive(int i) { Thread.SpinWait(2000000); return i % 5 == 0; }   Basta remover o AsParallel da instrução LINQ que você terá uma noção prática da diferença de performance. 1. Instrução utilizando AsParallel   2. Instrução sem utilizar paralelismo Performance Apesar de todos os benefícios, não podemos utilizar PLINQ sem conhecer todos os seus detalhes. Lembre-se de fazer as perguntas básicas: Eu tenho trabalho suficiente que justifique utilizar paralelismo? Mesmo com o overhead do PLINQ, vamos ter algum benefício? Por este motivo, visite este link e conheça todos os aspectos, antes de utilizar os recursos disponíveis. Conclusão Utilizar recursos de paralelismo é ótimo, aumenta a performance, utiliza o investimento realizado em hardware – tudo isso sem custo de produtividade. Porém, não podemos usufruir de qualquer tipo de tecnologia sem conhece-la a fundo antes. Portanto, faça bom uso, mas não esqueça de manter o conhecimento a frente da empolgação. Abraços.

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  • Solaris 11 Update 1 - Link Aggregation

    - by Wesley Faria
    Solaris 11.1 No início desse mês em um evento mundial da Oracle chamado Oracle Open World foi lançada a nova release do Solaris 11. Ela chega cheia de novidades, são aproximadamente 300 novas funcionalidade em rede, segurança, administração e outros. Hoje vou falar de uma funcionalidade de rede muito interessante que é o Link Aggregation. O Solaris já suporta Link Aggregation desde Solaris 10 Update 1 porem no Solaris 11 Update 1 tivemos incrementos significantes. O Link Aggregation como o próprio nome diz, é a agregação de mais de uma inteface física de rede em uma interface lógica .Veja agumas funcionalidade do Link Aggregation: · Aumentar a largura da banda; · Imcrementar a segurança fazendo Failover e Failback; · Melhora a administração da rede; O Solaris 11.1 suporta 2(dois) tipos de Link Aggregation o Trunk aggregation e o Datalink Multipathing aggregation, ambos trabalham fazendo com que o pacote de rede seja distribuído entre as intefaces da agregação garantindo melhor utilização da rede.vamos ver um pouco melhor cada um deles. Trunk Aggregation O Trunk Aggregation tem como objetivo aumentar a largura de banda, seja para aplicações que possue um tráfego de rede alto seja para consolidação. Por exemplo temos um servidor que foi adquirido para comportar várias máquinas virtuais onde cada uma delas tem uma demanda e esse servidor possue 2(duas) placas de rede. Podemos então criar uma agregação entre essas 2(duas) placas de forma que o Solaris 11.1 vai enchergar as 2(duas) placas como se fosse 1(uma) fazendo com que a largura de banda duplique, veja na figura abaixo: A figura mostra uma agregação com 2(duas) placas físicas NIC 1 e NIC 2 conectadas no mesmo switch e 2(duas) interfaces virtuais VNIC A e VNIC B. Porem para que isso funcione temos que ter um switch com suporte a LACP ( Link Aggregation Control Protocol ). A função do LACP é fazer a aggregação na camada do switch pois se isso não for feito o pacote que sairá do servidor não poderá ser montado quando chegar no switch. Uma outra forma de configuração do Trunk Aggregation é o ponto-a-ponto onde ao invéz de se usar um switch, os 2 servidores são conectados diretamente. Nesse caso a agregação de um servidor irá falar diretamente com a agregação do outro garantindo uma proteção contra falhas e tambem uma largura de banda maior. Vejamos como configurar o Trunk Aggregation: 1 – Verificando quais intefaces disponíveis # dladm show-link 2 – Verificando interfaces # ipadm show-if 3 – Apagando o endereçamento das interfaces existentes # ipadm delete-ip <interface> 4 – Criando o Trunk aggregation # dladm create-aggr -L active -l <interface> -l <interface> aggr0 5 – Listando a agregação criada # dladm show-aggr Data Link Multipath Aggregation Como vimos anteriormente o Trunk aggregation é implementado apenas 1(um) switch que possua suporte a LACP portanto, temos um ponto único de falha que é o switch. Para solucionar esse problema no Solaris 10 utilizavamos o IPMP ( IP Multipathing ) que é a combinação de 2(duas) agregações em um mesmo link ou seja, outro camada de virtualização. Agora com o Solaris 11 Update 1 isso não é mais necessário, voce pode ter uma agregação de 2(duas) interfaces físicas e cada uma conectada a 1(um) swtich diferente, veja a figura abaixo: Temos aqui uma agregação chamada aggr contendo 4(quatro) interfaces físicas sendo que as interfaces NIC 1 e NIC 2 estão conectadas em um Switch e as intefaces NIC 3 e NIC 4 estão conectadas em outro Swicth. Além disso foram criadas mais 4(quatro) interfaces virtuais vnic A, vnic B, vnic C e vnic D que podem ser destinadas a diferentes aplicações/zones. Com isso garantimos alta disponibilidade em todas a camadas pois podemos ter falhas tanto em switches, links como em interfaces de rede físicas. Para configurar siga os mesmo passos da configuração do Trunk Aggregation até o passo 3 depois faça o seguinte: 4 – Criando o Trunk aggregation # dladm create-aggr -m haonly -l <interface> -l <interface> aggr0 5 – Listando a agregação criada # dladm show-aggr Depois de configurado seja no modo Trunk aggregation ou no modo Data Link Multipathing aggregation pode ser feito a troca de um modo para o outro, pode adcionar e remover interfaces físicas ou vituais. Bem pessoal, era isso que eu tinha para mostar sobre a nova funcionalidade do Link Aggregation do Solaris 11 Update 1 espero que tenham gostado, até uma próxima novidade.

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  • Google Now : Google revient à ses fondamentaux dans Android et fait de la recherche la « killing feature » de Jelly Bean

    Google Now : Google revient à ses fondamentaux dans Android Et fait de la recherche la « killing feature » de Jelly Bean Nous vous en parlions avant-hier soir, dans le cadre du lancement d'Android 4.1 : Google a repensé la recherche dans son OS mobile avec un service très prometteur, Google Now. Un service déjà présenté comme le « porte étendard » de Jelly Beans auprès du grand public. Google revient aujourd'hui en détail sur cette nouveauté. « Jusqu'à présent, les smartphones avaient besoin que l'utilisateur leur dise quoi faire. Mais aujourd'hui, il y a Google Now », écrit l'éditeur. « La nouvelle fonct...

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  • RIM présente BlackBerry 6.0, le futur OS de ses téléphones

    Mise à jour du 28.04.2010 par Katleen RIM présente BlackBerry 6.0, le futur OS de ses téléphones BlackBerry. Les téléphones des professionnels par excellence. Une recette qui marche, et qui n'avait pas changé depuis un moment. Hier cependant, son fabriquant RIM a présenté la future version du système d'exploitation de ces mobiles. L'interface du BlackBerry OS 6.0 est efficace, même si elle emprunte beaucoup à d'autres produits, comme l'iPhone ou le Zune. Elle est très fonctionnelle et cohérente. Au niveau technique, le navigateur qui recevait des retours mitigés des utilisateurs, sera équipé d'une version récente du moteur de rendu HTML Webkit et affichera donc le...

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  • "Même un enfant peut jailbreaker un iPhone", avec l'invention de l'iDongle

    "Même un enfant peut jailbreaker un iPhone", avec l'invention de l'iDongle Pour débloquer un iPhone, il fallait auparavant se lancer dans un processus complexe et laborieux. C'était avant l'arrivée de l'iDongle : un petit appareil qui se branche directement sur le smartphone pour le "libèrer". Il est très facile à utiliser, comme le montre la vidéo source. Il permet de jailbreaker un mobile tout neuf, mais n'est actuellement opérationnel qu'avec la version 3GS 3.2 (ainsi qu'avec l'iPod Touch 2G/3G). Sa production est très limitée mais son créateur appelle aux dons pour augmenter sa production. Source : L'iDongle en action :

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