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Bob_10976's avatar
Bob_10976
Icon for Nimbostratus rankNimbostratus
Nov 20, 2012

Checking for Ethernet connectivity

We are implementing a new subnet to a network and will need to run them through the LTM. Looking at the GUI I see I have 2 interfaces that show as "down". The LTM is in a remote location so with out being able to phyically look at the front of the device I need to know if the 2 interfaces actually have ethernet cables plugged into them. I did check statistics and there has been no traffic using those interfaces at all.

 

Is there a command or somewhere in the GUI that will help me determine if there is actually a cable plugged into this, vs having to drive to the location..

 

 

Thanks,

 

Bob

 

config
design

6 Replies

  • pete_71470's avatar
    pete_71470
    Icon for Cirrostratus rankCirrostratus
    Nov 20, 2012
    On a Viprion running 11.2.1HF1:

     

     

     

    (cfg-sync In Sync)(/S1-green-P:Active)(/Common)(tmos) sh net int 1/1.1

     

     

    ----------------------------------------------------------------------

     

    Net::Interface

     

    Name Status Bits Bits Pkts Pkts Drops Errs Media

     

    In Out In Out

     

    ----------------------------------------------------------------------

     

    1/1.1 up 142.2G 261.7G 180.2M 224.9M 11 0 10000SR-FD

     

     

     

    For an interface with no SFP inserted:

     

     

     

    (cfg-sync In Sync)(/S1-green-P:Active)(/Common)(tmos) sh net int 1/1.8

     

     

    ---------------------------------------------------------

     

    Net::Interface

     

    Name Status Bits Bits Pkts Pkts Drops Errs Media

     

    In Out In Out

     

    ---------------------------------------------------------

     

    1/1.8 miss 0 0 0 0 0 0 none

     

  • Bob_10976's avatar
    Bob_10976
    Icon for Nimbostratus rankNimbostratus
    Nov 20, 2012

    Sorry I should have listed my specific device version, I'm running 10.2.3.

     

     

    Thanks,

     

    Bob

     

  • What_Lies_Bene1's avatar
    What_Lies_Bene1
    Icon for Cirrostratus rankCirrostratus
    Nov 20, 2012
    I don't think any device has a way of determining if a cable is plugged in or not. Zero traffic does not mean one isn't, it just means the link has never come up.

     

     

    Is there no-one at the remote site who could check for you? I assume if there are no cables you'll need to attend to attach some anyway no?
  • Bob_10976's avatar
    Bob_10976
    Icon for Nimbostratus rankNimbostratus
    Nov 20, 2012

    With Cisco devices you can issue a show interface command and get information that can help you know determine one way or the other if there is a cabled plugged in. Doesn't say it's plugged in, but I can resonable assume that if it says protocal up then I know there is a cable plugged in.

     

    I did find: "b interface show" but it doesn't really go indepth more than the GUI.

     

    Guess I'm making a drive.. :-)

     

     

    Thanks,

     

    Bob

     

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Nov 20, 2012
    What does 'tmsh show net int all-properties' show?

     

     

    You should see 'ms' or 'miss' for an unpopulated port, 'down' for a port with a cable plugged in and 'up' for a port that's connected and up.

     

     

    Aaron
  • Bob_10976's avatar
    Bob_10976
    Icon for Nimbostratus rankNimbostratus
    Nov 20, 2012

    Thanks Aaron.. the out put shows:

     

    1.6 down 0 0 0 0 0 0 0 0 0 0 0 none tx-rx none detached

     

    1.7 down 0 0 0 0 0 0 0 0 0 0 0 none tx-rx none detached

     

     

    Looks as if I've got something plugged in..

     

     

    Bob