Re: [gentoo-user] [QA] The 'dropped' value in /sbin/ifconfig output

[Xavier Parizet <xav@gentooist.com>]

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On 02/25/2010 04:36 PM, Kan-I Jyo wrote:
> Hello, Xavier
> 
> Thank you for your prompt reply.
> 
> 2010/2/25 Xavier Parizet <xav@gentooist.com>:
>> Well, you're talking about two different things:
>> the dropped value in ifconfig output is related to Ethernet packet which
>> would be dropped by hardware.
> 
> Yeah, you have made the things clear to me. I just wondered why would I
> mess them up.
> 
> So, in my understanding, those packets that are dropped by iptables in fact
> have been received by the NICs, and that is the reason the "dropped'
> value are not added up.
> 
> And here comes my original question: When will the 'dropped' count up?
> (Just want to know some general ideas)

Network failure / packet loss / invalid ethernet frames / any hardware
related failures which will lead to a packet drop by the hardware
itself. It's a means for the hardware to report to the kernel/software
that it ignored some packets for any reason, these reasons should be
found in dmesg afaik.

-- 
      Xavier Parizet
YaGB :   http://gentooist.com
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