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vMX Ubuntu eth0 error

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  • 1.  vMX Ubuntu eth0 error

    Posted 05-10-2017 02:48

    i m getting bellow in vMX setup on Ubuntu.

    eth0: error fetching interface information: Device not found
    Error! Cannot find interface eth0
    Log file........................................../var/tmp/vmx-15.1F6-S4.2/build/vmx1/logs/vmx_1494400847.log
     Aborted!. 1 error(s) and 0 warning(s)


  • 2.  RE: vMX Ubuntu eth0 error
    Best Answer

    Posted 05-10-2017 02:57

    Hi Matt Dinham


    i was using below documentation and I  have configure eth0 for management-interface : eth0 , but in ubunto interfaces names are "em1 em2 em3 em4"

    page # 30 on http://www.juniper.net/documentation/en_US/vmx14.1/information-products/pathway-pages/getting-started/getting-started.pdf

    page # 22 on http://forums.juniper.net/jnet/attachments/jnet/Day1Books/399/1/DayOne_vMX.pdf


    I changed host-management-interface : eth0 to em1  issue got fixed.




  • 3.  RE: vMX Ubuntu eth0 error

    Posted 05-10-2017 03:02

    Our posts "crossed over"... 🙂 Glad you got it fixed!

  • 4.  RE: vMX Ubuntu eth0 error

    Posted 05-10-2017 03:05



    Thanks for your quick reply,



  • 5.  RE: vMX Ubuntu eth0 error

    Posted 05-10-2017 03:01



    Please can you send a copy of your vmx.conf, and also the output from the command "ip addr"

    What is the name of the interface that you are using to manage your Ubuntu host? e.g. eth0, p1p1 etc


    You probably need to replace "eth0" in vmx.conf with the actual name of the host interface, e.g. "p1p1" 


    See this for info on predictable network interface naming https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/