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Rafael_Bernal_1's avatar
Rafael_Bernal_1
Icon for Nimbostratus rankNimbostratus
Feb 19, 2014
Solved

Interface 0.3: Link Down

Hi There!

 

Can anyone help me to diagnose this message?:

 

Feb 18 17:29:03 tmm tmm[22973]: 01230002:4: Interface 0.3: link is down Feb 18 17:29:06 tmm tmm[22973]: 01230001:4: Interface 0.3: link is up, 1000Mbps Full Duplex Feb 18 17:29:07 tmm tmm[22973]: 01230002:4: Interface 0.3: link is down Feb 18 17:29:09 tmm tmm[22973]: 01230001:4: Interface 0.3: link is up, 1000Mbps Full Duplex

 

/var/log/ltm has a lot of this message.

 

How can I verify Interface 0.3?

 

Best Regards.

 

application delivery
availability
LTM
management
  • IheartF5_45022's avatar
    IheartF5_45022
    Feb 19, 2014

    It's either a problem with;-

     

    • the BigIP switch port
    • the adjacent device port (the port connected to the BigIP port)
    • faulty/loose cable/connection

    Make a visual inspection of cable and check logs on adjacent device. If all OK start moving stuff (one thing at a time) until you identify problem.

     

    • change cable
    • move the cable in BigIP to a new port on the adjacent device (making sure all is configured on adjacent device new port)
    • move cable in siwthcport to new BigIP port (making sure all is configured on BigIP new port)

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  • IheartF5_45022's avatar
    IheartF5_45022
    Icon for Nacreous rankNacreous
    Feb 19, 2014

    It's either a problem with;-

     

    • the BigIP switch port
    • the adjacent device port (the port connected to the BigIP port)
    • faulty/loose cable/connection

    Make a visual inspection of cable and check logs on adjacent device. If all OK start moving stuff (one thing at a time) until you identify problem.

     

    • change cable
    • move the cable in BigIP to a new port on the adjacent device (making sure all is configured on adjacent device new port)
    • move cable in siwthcport to new BigIP port (making sure all is configured on BigIP new port)
  • Rafael_Bernal_1's avatar
    Rafael_Bernal_1
    Icon for Nimbostratus rankNimbostratus
    Feb 21, 2014

    Hi!

     

    I have unplugged all cable from BigIP and the error continues.

     

    I read something about "Interface 0.3" where this kind of interface are "Hidden interfaces"

     

    I do not know how to verify this.

     

    Any Idea?

     

  • Rafael_Bernal_1's avatar
    Rafael_Bernal_1
    Icon for Nimbostratus rankNimbostratus
    Feb 21, 2014

    I would do it, but I do not have contract support :(.

     

    I haven't found more information about "hidden interfaces", I don't know if these kind of interfaces could be some physical or logical.

     

  • IheartF5_45022's avatar
    IheartF5_45022
    Icon for Nacreous rankNacreous
    Feb 22, 2014

    Right - yes sorry it had escaped me that F5 do not use module 0 for 'real' interfaces and that therefore 0.3 must be something internal used for communication between the motherboard and the switchboard.

     

    If you don't have support then try using iHealth, only other option is to reboot the whole thing and pray....

     

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Feb 23, 2014

    Feb 18 17:29:03 tmm tmm[22973]: 01230002:4: Interface 0.3: link is down

     

    what happened before interface was down?

     

    if you suspect hardware, running eud may help.

     

    Release Note: End-User Diagnostics Release Notes

     

    http://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/related/relnotes_eud.html

     

    I would do it, but I do not have contract support :(.

     

    i understand all devices come with one free support case (definitely it does not cover hardware). you may try to call support line.