Error Model In Ns2

[ date ] [ thread ] [ subject ] [ author ] Hi Aleksandar, In order to generate random errors first you have to create the error model in your script and mobility model in ns2 then attach it to the link or node where you want the packets tworayground propagation model in ns2 to be dropped. For creating a random uniformly distributed errors you can type: #Create the error model set em [new ErrorModel] how to add energy model in ns2 $em unit pkt $em set rate_ 0.03 ;# PER = 3% $em ranvar [new RandomVariable/Uniform] $em drop-target [new Agent/Null] The way you attach error models to the links is different for wired and wireless scenarios. http://www.isi.edu/nsnam/ns/doc/node206.html If you are working with wired scenarios you have different places where you can insert the error model, you can check page 127 of the ns2 manual, I use: #attach the model to the link $ns link-lossmodel $em $n0 $n1 If you are working with wireless scenarios you can attach the error model by adding one option in node-config: $ns_ node-config -incomingErrProc $em or $ns_ node-config -outgoingErrProc $em You can http://mailman.isi.edu/pipermail/ns-users/2006-October/057470.html find detailed information of the differences between using the first or the second option also in page 127 of the ns2 manual. I must say that I couldn't use the error models in wireless scenarios. There is some problem with the -incomingErrProc and -outgoingErrProc options, they don't insert the error model in the simulation. In other words, the error model is created but it is never used so no packets are dropped. I have this problem when I use 802.11 it may appear in all kind of wireless scenarios. I asked to this list but I got no answer. Currently I am working in error models of wireless, so if you are also working in wireless I can send you more information on the topic. Regards, Guillermo Hi all, I need to setup link between two nodes where I have RANDOM ERRORS with PER (packet error rate) = 10exp-7, 10exp-6,10exp-5.... etc. So, I need to setup Error generator in ns2. Can somebody tell me how to do this? Thanks. A. Previous message: [ns] IPv6 support in NS-2 Next message: [ns] NS2 Installation problem with cygwin Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Ns-users mailing list

- Introduction to Network Simulator NS2 is a primer providing materials for NS2 beginners, whether students, professors, or researchers for understanding the architecture of Network Simulator 2 (NS2) and for incorporating https://books.google.com/books?id=_VkTzFLnwD4C&pg=PA435&lpg=PA435&dq=error+model+in+ns2&source=bl&ots=__35hm4tpp&sig=eLuTtaBXzOhrzRG27NbPbZlYQ9k&hl=en&sa=X&ved=0ahUKEwjHn6jatM_PAhUIyGMKHd0fBO8Q6AEITDAG simulation modules into NS2. The authors discuss the simulation architecture and...https://books.google.ru/books/about/Introduction_to_Network_Simulator_NS2.html?hl=ru&id=_VkTzFLnwD4C&utm_source=gb-gplus-shareIntroduction to Network Simulator NS2Моя библиотекаСправкаРасширенный поиск книгКупить эл. книгу: 8 982,39 ₽Получить печатную версию этой книгиSpringer ShopBoleroOzon.ruBooks.ruНайти в библиотекеВсе продавцы»Introduction to Network Simulator NS2Teerawat Issariyakul, in ns2 Ekram HossainSpringer Science & Business Media, 2 дек. 2011 г. - Всего страниц: 512 1 Отзывhttps://books.google.ru/books/about/Introduction_to_Network_Simulator_NS2.html?hl=ru&id=_VkTzFLnwD4CIntroduction to Network Simulator NS2 is a primer providing materials for NS2 beginners, whether students, professors, or researchers for understanding model in ns2 the architecture of Network Simulator 2 (NS2) and for incorporating simulation modules into NS2. The authors discuss the simulation architecture and the key components of NS2 including simulation-related objects, network objects, packet-related objects, and helper objects. The NS2 modules included within are nodes, links, SimpleLink objects, packets, agents, and applications. Further, the book covers three helper modules: timers, random number generators, and error models. Also included are chapters on summary of debugging, variable and packet tracing, result compilation, and examples for extending NS2. Two appendices provide the details of scripting language Tcl, OTcl and AWK, as well object oriented programming used extens

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