RE: Network interface testing utlity
> Your monitor will indirectly monitor these errors if
> it measures throughput which will decrease as the errors increase.
I always thought that the fields "Error on Receiving/Transmission", for example in the package ethstatus, is for telling if there are any errors detected in the link layer? Isn't that the case? If not, then what does those error tell you about?
I do blog at http://blogs.koolwal.net/
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> Subject: RE: Network interface testing utlity
> Date: Sun, 4 Oct 2009 07:32:53 -0700
>>---- Original Message ----
>>To: email@example.com, firstname.lastname@example.org
>>Subject: RE: Network interface testing utlity
>>Date: Sat, 3 Oct 2009 23:37:52 -0700
>>>> OK then. The next question is how and what you intend to test. Are
>>>> you trying only to test a link (the media between your box and the
>>>> next box) or end-to end (where the two boxes are separated by many
>>>> links and many routers)?
>>>> Probably a block diagram of your proposed test setup would help.
>>>> what media types?
>>>The idea is to test between two boxes (connected directly with a
>>standard CAT5 cable) to eliminate/minimize any other network
>>interference caused by routers, switches, hubs, etc.
>>>On one box I will have my Gigabit Ethernet card (connected with
>>different media types) that I want to test and on the other end of
>>the box, I am going to have a standard known reference Gigabit
>>>The media types are:
>>>a) Standard CAT5
>>>b) Custom twisted pair
>>>I do blog at http://blogs.koolwal.net/
> OK then, here's my opintion
> All (?) the tools you mention including Wireshark which is the one I
> use will provide network statistics. Since they are software,
> however, they reside above (in the protocol sense) the link (e.g.
> Ethernet) which is where the majority of the errors are likely to
> occur (if a check sum error occurs your Ethernet card will merely
> discard it and wait for a retransmission so it will never be seen by
> your analyzer). Your monitor will indirectly monitor these errors if
> it measures throughput which will decrease as the errors increase. I
> would surmise that by installing and using one of the tools you will
> gain lots of insight and knowledge but not enough to definitively
> choose between one network card and another.
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