[Mini-NDN] NLSR has not converged - Issue while running minindn

Tue Jun 14 12:48:39 PDT 2016

Hi Ashlesh,

Thank you for sorting out the problem.

I am using Ubuntu 14.04 LTS.

Yeah. 'nfd-status' was not working even outside the mini-ndn folder  (seems
like nfd-start and stop were working, I even got 'NFD already running'
message when i triggered nfd-start multiple times)

When i tried checking out the above patch in NFD folder there was 'fatal:
reference not in tree' issue. So, i removed '--depth 1' part from git clone
of NFD in install.sh of mini-ndn and reinstalled it

I checked out the above patch as well and ran waf configuration and
installation

Then i executed both 'nfd-status' and pingall experiment and both got
executed successfully with the convergence time of 120 instead of 60. Thank
you so much for the help.

I just have one more query. When I executed the command 'sudo minindn
--experiment=pingall --ctime 120 --nPings=50' and checked ping-data , it
showed count for only few files . Is this expected ?

rajendrj at Jeeva:~$ grep -c content /tmp/*/ping-data/*.txt
/tmp/a/ping-data/b.txt:243
/tmp/a/ping-data/c.txt:0
/tmp/a/ping-data/d.txt:0
/tmp/b/ping-data/a.txt:0
/tmp/b/ping-data/c.txt:0
/tmp/b/ping-data/d.txt:0
/tmp/c/ping-data/a.txt:0
/tmp/c/ping-data/b.txt:242
/tmp/c/ping-data/d.txt:0
/tmp/d/ping-data/a.txt:0
/tmp/d/ping-data/b.txt:241
/tmp/d/ping-data/c.txt:0

Please advise.

Thanks,
~Jeeva

On 14 June 2016 at 19:42, Ashlesh Gawande (agawande) <agawande at memphis.edu>
wrote:

> Hi
>
>
> Some new information may have come to light, if nfd-status is not working
> outside Mini-NDN can you try the following patch:
>
>
> https://github.com/named-data/NFD/commit/ace83ac9384da037a36695888e829d7337ce36b0
>
>
> To do so go to your NFD folder and do
>
> git checkout ace83ac9384da037a36695888e829d7337ce36b0
>
> ./waf distclean
>
> ./waf configure --without-websocket
>
> ./waf
>
> sudo ./waf install
>
>
> Then try to run Mini-NDN experiment again.
>
>
> And is your OS, Ubuntu 14.04?
>
>
> Thanks
>
> Ashlesh
>
>
> ------------------------------
> *From:* Mini-NDN <mini-ndn-bounces at lists.cs.ucla.edu> on behalf of
> Ashlesh Gawande (agawande) <agawande at memphis.edu>
> *Sent:* Tuesday, June 14, 2016 11:29:50 AM
> *To:* Rajendran Jeeva
>
> *Cc:* mini-ndn at lists.cs.ucla.edu
> *Subject:* Re: [Mini-NDN] NLSR has not converged - Issue while running
> minindn
>
>
> Can you check whether nfd-status works outside of mini-ndn?
>
> Just do nfd-start and then do nfd-status.
>
>
> Convergence depends on nfd-status as mini-ndn checks whether prefixes and
> routers have been installed.
>
>
> > a nfd does not work because we use the a.conf file, if you do" a nfd -f
> a.conf &" it should work.
>
> But the problem seems to be that nfd-status is not working (even outside
> of mini-ndn).
>
>
> Ashlesh
> ------------------------------
> *From:* Rajendran Jeeva <rajendrj at tcd.ie>
> *Sent:* Tuesday, June 14, 2016 9:32:55 AM
> *To:* Ashlesh Gawande (agawande)
> *Cc:* mini-ndn at lists.cs.ucla.edu
> *Subject:* Re: [Mini-NDN] NLSR has not converged - Issue while running
> minindn
>
> Hi Ashlesh,
>
> Thanks for the response.
>
> I tried running the command 'a nfd-status -b' for node 'a' and for other
> nodes as well. It is not displaying anything .
>
> 1. NFD status:
>
> mininet> a nfd-status -b
> mininet>
>
>
> NLSR status is displaying as follow
>
> 2. NLSR status:
>
> mininet> a nlsrc status
> NLSR Status
> LSDB:
>   OriginRouter: /ndn/edu/%C1.Router/cs/a
>
>     Coordinate LSA:
>       info=LsaInfo(OriginRouter: /ndn/edu/%C1.Router/cs/a, SequenceNumber:
> 90, ExpirationPeriod: 3591936 milliseconds)
>       angle=0
>       radius=0
>
>     Name LSA:
>       info=LsaInfo(OriginRouter: /ndn/edu/%C1.Router/cs/a, SequenceNumber:
> 90, ExpirationPeriod: 3591932 milliseconds)
>       name=/ndn/edu/a
>
>   OriginRouter: /ndn/edu/%C1.Router/cs/b
>
> 3. I just tried running 'nfd' command for a node and it displayed 'Failed
> to read configuration file: /usr/local/etc/ndn/nfd.conf'
>
> mininet> a nfd
> 1465913606.293515 FATAL: [NFD] Failed to read configuration file:
> /usr/local/etc/ndn/nfd.conf [from ../core/config-file.cpp:94 in void
> nfd::ConfigFile::parse(const string&, bool)]
> mininet>
>
> I ensured again that NFD is installed when mini-ndn is installed and the
> configuration is run.
>
> Not sure whether the convergence is not happening because the conf file is
> missing.
>
> Any help would be appreciated
>
> Thanks in advance
>
> ~Jeeva
>
>
> On 13 June 2016 at 16:56, Ashlesh Gawande (agawande) <agawande at memphis.edu
> > wrote:
>
>> Try to run just:
>>
>> sudo minindn
>>
>>
>> And when the command line comes up, wait for some time and check the FIB
>> of each node:
>>
>>
>> a nfd-status -b
>>
>> b nfd-status -b
>>
>> c nfd-status -b
>>
>> d nfd-status -b
>>
>>
>> They should all have each other prefixes (i.e. /ndn/edu/<node>) and
>> routers (/ndn/edu/%C1.Router/<node>).
>>
>> If not you will get the error you got - NLSR could not converge (only if
>> an experiment was run).
>>
>>
>> If they do have each other's prefixes then you can try to increase the
>> convergence time:
>>
>> sudo minindn --experiment=pingall --ctime 100
>>
>>
>> Ashlesh
>> ------------------------------
>> *From:* Mini-NDN <mini-ndn-bounces at lists.cs.ucla.edu> on behalf of
>> Rajendran Jeeva <rajendrj at tcd.ie>
>> *Sent:* Sunday, June 12, 2016 10:33:05 AM
>> *To:* mini-ndn at lists.cs.ucla.edu
>> *Subject:* [Mini-NDN] NLSR has not converged - Issue while running
>> minindn
>>
>> Hi All,
>>
>> I have installed mini-ndn as follows:
>>
>> 1. Cloned 'mini-ndn' from github
>> 2. $ cd mini-ndn
>> 3. Installed it using the command
>>
>> sudo ./install.sh -mrfti
>>
>> 4. When the above command got executed , NFD, NLSR, ndn, and
>> mininet got installed in the 'mini-ndn' directory(not in the home directory
>>
>> as I ran install.sh from inside mini-ndn directory )
>>
>> 5. Once the installation is completed I tried running the --Pingall experiment with
>>
>> default topology
>>
>> 6. There was an error stating 'mininet.topo module not found'(Rectified this
>>
>> problem by installing 'mininet' in the home directory)
>>
>> 7. When I ran the minindn command again, I got the following output
>>
>> rajendrj at Jeeva:~$ sudo minindn --experiment=pingall
>> No results folder specified; experiment results will remain in the working directory
>> 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:
>> (10ms delay) (10ms delay) (a, b) (10ms delay) (10ms delay) (a, c) (10ms delay) (10ms delay) (b, d)
>> *** Configuring hosts
>> a b c d
>> Setup time: 8
>> *** Starting controller
>> c0
>> *** Starting 0 switches
>>
>> Loading experiment: pingall
>> Using 1.000000 traffic
>> *Waiting 60 seconds for convergence...*
>> ...done
>> *NLSR has not converged. Exiting...*
>> rajendrj at Jeeva:~$
>>
>> As shown in the last line, the execution exited with 'NLSR has not converged'
>>
>> ' message
>>
>> Am I missing something here ? Is this because 'mininet' is running from home directory
>>
>> but NLSR , NFD and ndn run from 'mini-ndn' directory ? Is there a way to see
>>
>> the error output?
>>
>> Please advise and help me here
>>
>> Thanks in advance,
>>
>> ~Jeeva
>>
>>
>>
>>
>>
>>
>
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