[Nfd-dev] [EXT] ndnping error report

Junxiao Shi shijunxiao at email.arizona.edu
Fri May 1 17:13:32 PDT 2020


Hi Ishita

Only the first Interest appeared on the wire. Other Interests are lost
somewhere on the client node. It's probably some bug in UDP multicast
implementation.
Try a different face transport type, such as Ethernet multicast or UDP
unicast.

Yours, Junxiao

On Fri, May 1, 2020 at 8:06 PM Ishita Dasgupta <ishita.dasgupta at gmail.com>
wrote:

> *External Email*
> Hi Junxiao
>
> Done. Here it is.
> Also attached the log for the failed sequence number interests.
>
> Regards,
> Ishita Dasgupta
>
> On Fri, May 1, 2020 at 7:43 PM Junxiao Shi <shijunxiao at email.arizona.edu>
> wrote:
>
>> Hi Ishita
>>
>> The tcpdump trace is generated incorrectly. I need pcap format.
>> Use this command:
>> sudo tcpdump -i eth1 -w 1.pcap "(ether proto 0x8624) or (tcp port 6363)
>> or (udp port 6363) or (udp port 56363)"
>> Substitute eth1 with the network interface name between your two nodes.
>>
>> For NFD logs, please only include the current run, and delete anything
>> from previous runs.
>>
>> Yours, Junxiao
>>
>> On Fri, May 1, 2020 at 7:38 PM Ishita Dasgupta <ishita.dasgupta at gmail.com>
>> wrote:
>>
>>> *External Email*
>>> Hi Junxiao,
>>>
>>> Here is all of them.
>>> Also, attaching the failed sequence numbers so that its easier to trace
>>> from the log.
>>> Because everytime I start and stop the nfd, "*journalctl -u nfd*"
>>> logging seems to retain the prior sessions as well. Is there a way to look
>>> at the most current nfd session only?
>>>
>>> Regards,
>>> Ishita Dasgupta
>>>
>>> On Fri, May 1, 2020 at 7:09 PM Junxiao Shi <shijunxiao at email.arizona.edu>
>>> wrote:
>>>
>>>> Hi Ishita
>>>>
>>>> Please reply-all with the following so that I can help you.
>>>>
>>>>    - tcpdump capture on the network interface between consumer and
>>>>    producer node
>>>>    - reduce NFD loglevel to
>>>>       - default_level WARN
>>>>       - Forwarder DEBUG
>>>>       - BestRouteStrategy2 DEBUG
>>>>       - RibManager DEBUG
>>>>       - FibManager DEBUG
>>>>
>>>>
>>>>
>>>> Yours, Junxiao
>>>>
>>>> On Fri, May 1, 2020 at 3:48 PM Ishita Dasgupta via Nfd-dev <
>>>> nfd-dev at lists.cs.ucla.edu> wrote:
>>>>
>>>>> *External Email*
>>>>> System information: Ubuntu 18.04
>>>>> GCC: 7.4.0
>>>>> NFD: 0.7.0
>>>>>
>>>>> After having started nfd using systemctl, and adding routes via nfdc
>>>>> route add, I am trying to perform a simple ndnping test that fails after
>>>>> one successful interest received. Looking at the nfd logs, it seems like
>>>>> the consecutive interests are sent by the consumer but not received by the
>>>>> producer.
>>>>> Can any body help me understand why? I have added the nfd
>>>>> logs(producer-nfdserver.log, consumer-nfd.log) on in this email.
>>>>>
>>>>> Also attached is an image of the ndnping client log
>>>>>
>>>>>
>>>>> Regards,
>>>>> Ishita Dasgupta
>>>>>
>>>>
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