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

Tue Jun 14 11:42:44 PDT 2016

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<mailto: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<mailto:mini-ndn-bounces at lists.cs.ucla.edu>> on behalf of Rajendran Jeeva <rajendrj at tcd.ie<mailto:rajendrj at tcd.ie>>
Sent: Sunday, June 12, 2016 10:33:05 AM
To: mini-ndn at lists.cs.ucla.edu<mailto: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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