[Mini-NDN] Multi Router NLSR config

Fri Apr 15 07:15:21 PDT 2016

Are you able to run Mininet? It could be that Mininet is not installed correctly, and so Mini-NDN is unable to use it establish links.

What is the output when your run “sudo mn”?

--
Vince Lehman

On Apr 15, 2016, at 3:24 AM, S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>> wrote:

Hi everyone,

Regarding my previous email on the output of running sudo minindn, I look up for the reason. It seems that the problem occurs whenever mininet tries to add links between nodes. As I'm using mini-NDN on vmware, may there be any problem with vmware networking or any other settings? The output of sudo minindn is as below:
Parse of /usr/local/etc/mini-ndn/default-topology.conf done.
*** Creating network
*** Adding controller
*** Adding hosts:
a b c d
*** Adding switches:*** Adding links:
*** gave up after 3 retries

Regards

On Tue, Apr 12, 2016 at 1:14 AM, S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>> wrote:
Dear Vince,

The output of running sudo minindn is:
Parse of /usr/local/etc/mini-ndn/default-topology.conf done.
*** Creating network
*** Adding controller
*** Adding hosts:
a b c d
*** Adding switches:

*** Adding links:
*** gave up after 3 retries

I do not pass any file as parameter for manual execution of NLSR. So it uses the configuration file in the current directory. I run it in two directories and the results are as follow:

- directory: /usr/local/etc/mini-ndn/

Wrong configuration section: $GENERAL_SECTION
Wrong configuration section: $NEIGHBORS_SECTION
Wrong configuration section: $HYPERBOLIC_SECTION
Wrong configuration section: $FIB_SECTION
Wrong configuration section: $ADVERTISING_SECTION
ERROR: error while connecting to the forwarder (No such file or directory)

- directory: Source of NLSR from GitHub:
Provided log directory </var/log/nlsr/> does not exist
Error in configuration file processing! Exiting from NLSR

Best Regards,
skh

On Tue, Apr 12, 2016 at 12:40 AM, Vince Lehman (vslehman) <vslehman at memphis.edu<mailto:vslehman at memphis.edu>> wrote:
But mini-NDN fails (without any error message at CLI or log).

When you run “sudo minindn”, is there any output? If so, can you please send the output?

Also manual execution of NLSR results in bad config file's format.

Are you passing the configuration file as a parameter to NLSR (i.e., nlsr -f /path/to/config/filename.conf) or do you have an NLSR configuration file in the current directory when you run the “nlsr” command? If not, NLSR will fail to parse the configuration, since it cannot find the configuration file.

--
Vince Lehman

On Apr 11, 2016, at 3:00 PM, S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>> wrote:

Dear Vince,

My concern is that I have installed the source files on a new machine, not the one that I already installed binary versions from PPA on it. So I think that the problem is elsewhere. Could you please let me know other probable sources of the problem?

Regards,
skh

On Mon, Apr 11, 2016 at 8:12 PM, Vince Lehman (vslehman) <vslehman at memphis.edu<mailto:vslehman at memphis.edu>> wrote:
Yes, the PPAs will either need to be removed or you will need to be sure that the binaries compiled and installed from source are the ones used by the system.

The problem you are experiencing is due to the PPA version of NLSR expecting a configuration file at /etc/ndn/nlsr/nlsr.conf by default. The version installed from source expects nlsr.conf to be in the current working directory by default. When Mini-NDN runs NLSR, it does not explicitly specify a configuration file, so if you use the PPA version, each node will try to use the configuration in /etc/ndn/nlsr/nlsr.conf instead of the current working directory (which is each node’s home folder).

This issue between source and PPA installs should be resolved when the task in http://redmine.named-data.net/issues/3039 is completed.

--
Vince Lehman

On Apr 11, 2016, at 10:26 AM, Lan Wang (lanwang) <lanwang at memphis.edu<mailto:lanwang at memphis.edu>> wrote:

Maybe you need to clean up your previous PPA installation and then try the source installation.  Vince has seen similar problems before.

Lan

On Apr 10, 2016, at 2:26 PM, S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>> wrote:

Dear Ashlesh,

In advance, thank you very much for your helps.
Regarding your previous comment, I built and installed all packages from the sources regarding the instructions. The required paths created and files carefully copied to the paths.
But mini-NDN fails (without any error message at CLI or log). Also manual execution of NLSR results in bad config file's format. Could you please let me know whether the problem is with defualt config file or mini-NDN executes NLSR with different config file. Where do you think the problem may be from?

Many thanks,
skh

On Fri, Apr 8, 2016 at 1:24 AM, Ashlesh Gawande (agawande) <agawande at memphis.edu<mailto:agawande at memphis.edu>> wrote:

Mini-NDN does not support the PPAs yet. You will have to install ndn-cxx, NFD, NLSR from source (make sure to uninstall the binaries first!).

But you might be able to get it running:
Mini-NDN reads nlsr.conf and client.conf from /usr/local/etc/mini-ndn which it copies over during installation.
nfd.conf should also be in this folder - copied from /usr/local/etc/ndn/nfd.conf.sample

Ashlesh
________________________________
From: S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>>
Sent: Thursday, April 7, 2016 3:41 PM

To: Ashlesh Gawande (agawande)
Cc: mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: Re: [Mini-NDN] Multi Router NLSR config

I installed binary version of NFD from https://launchpad.net/~named-data/+archive/ppa (including ndn-cxx as its prerequisite) and binary version of nlsr too. Then, I installed mini-NDN from the source (available on GitHub) according to INSTALL.md. However, when I run nlsr manually, it fails with the following error:
Failed to read configuration file: nlsr.conf
Error in configuration file processing! Exiting from NLSR.

On Fri, Apr 8, 2016 at 12:38 AM, Ashlesh Gawande (agawande) <agawande at memphis.edu<mailto:agawande at memphis.edu>> wrote:

Can you please tell how you installed ndn-cxx, NFD, NLSR, and Mini-NDN?

I would suggest first at least try to run with auto generated files before moving to manually configured files.

Ashlesh
________________________________
From: S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>>
Sent: Thursday, April 7, 2016 3:05 PM

To: Ashlesh Gawande (agawande)
Cc: mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: Re: [Mini-NDN] Multi Router NLSR config

Dear Ashlesh,

Thank you very much for the response.
I already checked the path, but there was no such directory(/etc/ndn/nlsr). So I added the directory and copied the file from the ndn_utils directory of the source and then run Mini-NDN. But the problem did not solve.
Could you please let me know about the auto-generation mechanism of nlsr config file? Can I generate the config files of the nodes manually(using any script etc) and copy them to the nodes folders?

Bests

On Thu, Apr 7, 2016 at 11:35 PM, Ashlesh Gawande (agawande) <agawande at memphis.edu<mailto:agawande at memphis.edu>> wrote:

Can you check if there is a file at /etc/ndn/nlsr/nlsr.conf and at ndn_utils/nlsr.conf?

Ashlesh
________________________________
From: S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>>
Sent: Thursday, April 7, 2016 11:55 AM
To: Ashlesh Gawande (agawande)
Cc: mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: Re: [Mini-NDN] Multi Router NLSR config

Dear Ashlesh,

Thank you very much for your instant response. Unfortunately my setup does not make any nlsr.conf file in nodes' home folder. I check the nlsr log file and there, I find out that the problem is with parsing the nlsr.conf file you addressed. The error message is:
"Failed to read configuration file: /etc/ndn/nlsr/nlsr.conf. Error in configuration file processing! Exiting from NLSR"
So I confused what may be the problem now. Your further helps would be appreciated.

Sincerely,
skh

On Wed, Apr 6, 2016 at 6:59 PM, Ashlesh Gawande (agawande) <agawande at memphis.edu<mailto:agawande at memphis.edu>> wrote:

Mini-NDN generates the NLSR configuration files for you.

You can check under /tmp/<node-name>/nlsr.conf

Mini-NDN copies this file https://github.com/named-data/mini-ndn/blob/master/ndn_utils/nlsr.conf
after filling in appropriate sections to each node's home folder /tmp/<node-name>/

Does this answer your question?

Ashlesh
________________________________
From: Mini-NDN <mini-ndn-bounces at lists.cs.ucla.edu<mailto:mini-ndn-bounces at lists.cs.ucla.edu>> on behalf of S Khorasani <s.kh.khorasani at gmail.com<mailto:s.kh.khorasani at gmail.com>>
Sent: Wednesday, April 6, 2016 3:32 AM
To: mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: [Mini-NDN] Multi Router NLSR config

Salaam,

I'm beginner in using mini-NDN emulator and have  encountered problem in configuration of NLSR. My problem is exactly with multi router configuration. In fact I do not know how can I prepare a nlsr.conf file that could be matched with default topology of mini-NDN (default-topology.conf file). As I find out, the default topology is for a multi router scenario (4 nodes), but the default configuration file of NLSR (nlsr.conf|) is not compatible with this scenario.
So it would be my pleasure if everyone could help me.

Kind Regards,
skh

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