[Mini-NDN] Interfaces went down in minindn

Thu Apr 7 15:52:24 PDT 2016

Okay I looked at your experiment and modified my ndn-traffic-client/server appropriately.

Initially all the interest are answered correctly.
Then you start to see some timeouts.
Then all interests time out.
My total interest loss was ~25%.

I am looking into it further.

Ashlesh
________________________________
From: Mini-NDN <mini-ndn-bounces at lists.cs.ucla.edu> on behalf of Ashlesh Gawande (agawande) <agawande at memphis.edu>
Sent: Thursday, April 7, 2016 5:12 PM
To: Navdeep Uniyal
Cc: mini-ndn at lists.cs.ucla.edu
Subject: Re: [Mini-NDN] Interfaces went down in minindn

Is this ndn-traffic-client.conf the default one?

Ashlesh
________________________________
From: Navdeep Uniyal <Navdeep.Uniyal at neclab.eu>
Sent: Thursday, April 7, 2016 2:58 AM
To: Ashlesh Gawande (agawande)
Cc: mini-ndn at lists.cs.ucla.edu; Lan Wang (lanwang)
Subject: RE: [Mini-NDN] Interfaces went down in minindn

Hi Ashlesh,

PFA the attached files I used for experiments.

“nectopo.conf” is the topology file

“nletest.py” is the experiment file

sudo minindn --experiment=icnle nectopo.conf

On Mininet CLI > ga ndn-traffic -c 1000 -i 10 /home/mininet/mini-ndn/ndn-traffic-generator/build/ndn-traffic-client.conf

Best Regards,

Navdeep Uniyal

From: Lan Wang (lanwang) [mailto:lanwang at memphis.edu]
Sent: Donnerstag, 7. April 2016 01:22
To: Navdeep Uniyal
Cc: Ashlesh Gawande (agawande); mini-ndn at lists.cs.ucla.edu
Subject: Re: [Mini-NDN] Interfaces went down in minindn

Ashlesh,

Maybe Navdeep can give you his setup files and you repeat his experiment?

Lan

On Apr 6, 2016, at 10:32 AM, Navdeep Uniyal <navdeep.uniyal at neclab.eu<mailto:navdeep.uniyal at neclab.eu>> wrote:

Hi Ashlesh,

Thank you for the reply. The interest sending rate is 100/sec although I checked it with 10/sec. In both the cases I found similar results. Interesting is the data generation and arrival time. The data transfer behaves perfectly fine for initial few interests while after a certain time it just stops and the requested data then is arrives just after the interfaces goes down(I guess mostly when I am stopping the Mininet topology) and are marked as unsolicited data.

I could not get this behavior if it is because of link issues, NFD issue or NDN Traffic generator issue. I tried asking the solution on the other nfd-dev mailing list but could not get any response.

Best Regards,

Navdeep Uniyal

From: Ashlesh Gawande (agawande) [mailto:agawande at memphis.edu]
Sent: Mittwoch, 6. April 2016 16:40
To: Navdeep Uniyal; mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: Re: Interfaces went down in minindn

What is the rate of sending interests?

Can you try lowering it and see if interest drops are decreased?

Ashlesh

________________________________

From: Mini-NDN <mini-ndn-bounces at lists.cs.ucla.edu<mailto:mini-ndn-bounces at lists.cs.ucla.edu>> on behalf of Navdeep Uniyal <Navdeep.Uniyal at neclab.eu<mailto:Navdeep.Uniyal at neclab.eu>>
Sent: Wednesday, April 6, 2016 3:52 AM
To: mini-ndn at lists.cs.ucla.edu<mailto:mini-ndn at lists.cs.ucla.edu>
Subject: [Mini-NDN] Interfaces went down in minindn

Hi everyone,

I have been running some experiments using minindn using NDN traffic generator for interest and data generation. I am facing a few issues as I am unable to get the data packets in response after a certain period of time. In my configuration I am making cs store size to be zero so that all interests can reach the producer. While investigating the issue of interest drops I found few errors in the nfd logs. Below are the few errors which I am getting in the log file:

1459932297.745268 ERROR: [EthernetTransport] [id=264,local=dev://sa-eth0,remote=ether://[01:00:5e:00:17:aa]] pcap_next_ex failed: The interface went down

1459932297.761311 ERROR: [EthernetTransport] [id=263,local=dev://sa-eth1,remote=ether://[01:00:5e:00:17:aa]] pcap_next_ex failed: The interface went down

1459932297.777269 ERROR: [EthernetTransport] [id=262,local=dev://sa-eth2,remote=ether://[01:00:5e:00:17:aa]] pcap_next_ex failed: The interface went down

Due to this, the interests are not getting satisfied. Attached are the nfd logs of the producer(similar errors are being observed on the other nodes as well). Please if someone can help me resolving the issue.

Best Regards,

Navdeep Uniyal

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