Find the answer to your Linux question:
Results 1 to 3 of 3
Hi everyone, I have to make some descision for my project. I have some devices placed in the network. I shall send some commands and they respond to the comands. ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined!
    Join Date
    Oct 2009
    Posts
    85

    How to know a network issue


    Hi everyone, I have to make some descision for my project. I have some devices placed in the network. I shall send some commands and they respond to the comands. Now if they doesn't respond i treat as communication failure.
    Now I know my device is working perfectly and the problem is with network. How would I make sure its the problem with the network but not with my device.

    Can anyone guide to make some solution.
    Thanks

  2. #2
    Trusted Penguin Irithori's Avatar
    Join Date
    May 2009
    Location
    Munich
    Posts
    3,444
    You could use tcpdump on the sender to trace, what really is sent and returns.
    Also, if that device is unix based, then running tcpdump there also makes sense.

    Did you check for errors with dmesg and ifconfig?
    Are the connection parameters ok? 100mbit/s fullduplex or 1gbit/s fullduplex. Check with mii-tool or dmesg.

    I also wouldnt rule out that device (btw: what is it?):
    Maybe it has some low timeouts, that cant be met by your (busy?) network.
    Or something simple like wrong gateway, netmask or dns?
    You must always face the curtain with a bow.

  3. #3
    Linux Engineer Kloschüssel's Avatar
    Join Date
    Oct 2005
    Location
    Italy
    Posts
    773
    How do you know that the device works perfectly if it doesn't respond?

  4. $spacer_open
    $spacer_close

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •