[P4-dev] Nanolog in Mininet

David Hancock dhancock at cs.utah.edu
Wed Oct 25 16:44:53 EDT 2017


Ah thank you

--David


On 10/25/2017 01:29 PM, Antonin Bas wrote:
> You need to run "make clean" before rebuilding again after you run 
> configure.
> A warning was probably printed to stdout, but because you are running 
> simple_switch in Mininet, it must be "hidden" somewhere.
>
> On Wed, Oct 25, 2017 at 12:14 PM, David Hancock <dhancock at cs.utah.edu 
> <mailto:dhancock at cs.utah.edu>> wrote:
>
>     I should add, after updating via git pull, I followed the
>     instructions to build the code.  At one point I did disable
>     logging and used --without-nanomsg.  Then, needing nanomsg again,
>     I followed the build instructions again, including sudo ldconfig.
>
>
>
>     On 10/25/2017 01:07 PM, David Hancock wrote:
>
>         When I run my mininet simulation that includes bmv2, the
>         switch is started with --nanolog, yet nanomsg_client returns:
>
>              The event logger is not enabled on the switch, run with
>         '--nanolog <ip addr>
>
>         Relevent mininet output:
>
>              s1 Starting P4 switch s1.
>              <path>/bmv2/targets/simple_switch/simple_switch -i
>         1 at s1-eth1 -i 2 at s1-eth2 -i 3 at s1-eth3 --thrift-port 22222
>         --nanolog ipc:///tmp/bm-0-log.ipc --device-id 0 <json path>
>              P4 switch s1 has been started.
>
>         >From the bmv2/tools directory:
>
>              ./nanomsg_client.py --thrift-port 22222
>              The event logger is not enabled on the switch, run with
>         '--nanolog <ip addr>'
>
>         I had not been having any problems with this until I updated
>         bmv2. I'm on commit ae84c2f6d5bc3dd6873a62e351f26c39038804da.
>
>         Any ideas what I'm doing wrong?
>
>         Thanks,
>         David
>
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> -- 
> Antonin

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