[ndnSIM] Problems with ndnSim about caching

zhangran at bupt.edu.cn zhangran at bupt.edu.cn
Sun Apr 24 19:29:10 PDT 2016

Hi, Spyros

Recently I have been studying the architecture and reading source code of ndnSim. And I find two things confusing me.

The first may be some kind of bug. When I run the examples given in the example folder, and set nodes with old content store, like ndnhelp.SetOldContentStore("ns3::ndn::cs::Lru","MaxSize","10000"), and then start simulation with --vis option. In the python graph window, every time I right click on a node there would be a notification appearing in the terminal "No OLSR", I don't know what this means and what consequence it would lead to. In addition, when I check CS of nodes in this way, there would only be one entry and it never changes. The entry is "/localhost/nfd/faces/events/%FE%01", I am doubting whether this is the bug of OldContentStore or not.

The second question is that I notice ndnSim 2.0 adopts the CS implentation of both ndnSim 1.0 and NFD. So I am not sure on which part should I rely to carry out my simulaiton on cache placement strategy. In addition, your paper about ndnSim 2.0 says that ndnSim 1.0 CS doesn't support the Interest Selector, I am not sure about what this means exactly. What does Interest selector means and what impact it would have?

Best Regards.

Zhang Ran

zhangran at bupt.edu.cn
From: Spyridon (Spyros) Mastorakis
Date: 2016-04-13 12:32
To: zhangran
CC: ndnsim
Subject: Re: [ndnSIM] About How to get started with ndnSim

I suggest you take a look at our website:


and try to run the simulation examples and see what is going on.

Hope that this helps.

Spyridon (Spyros) Mastorakis
Personal Website: http://cs.ucla.edu/~mastorakis/
Internet Research Laboratory
Computer Science Department

On Apr 12, 2016, at 1:34 AM, zhangran at bupt.edu.cn wrote:

Hello, everyone!

I am a new student in NDN and ndnSim, rescently I find it very important to learn about ndnsim, so I want to have a thorough study on it and make my own changes.

I send this e-mail to ask for help from senior users or researchers acquainted with ndnSim on how to get started with ndnSim. What I should learn first and in what order I should learn about different modules and what else background information do I need to know.

Thank you very much! I am looking forward to your generous reply!

Yours, Sincerely.

zhangran at bupt.edu.cn

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