Mailinglist Archive: opensuse (2835 mails)

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Re: [opensuse] Home network problem
  • From: Jan Kalcic <jandot@xxxxxxxxxxxxxx>
  • Date: Tue, 05 Dec 2006 15:34:14 +0100
  • Message-id: <45758366.5080004@xxxxxxxxxxxxxx>
James Wright wrote:
> On Tuesday 05 December 2006 7:48 am, Carl Hartung wrote:
>
>
>> I /do/ recall a thread in the last year or two here where we discovered a
>> small but significant difference between Linux and M$ "ping" ... one being
>> accepted and the other ignored, causing great consternation to the OP.
>>
>> This may not be the case here, but forewarned is forearmed. I
>> think /usr/sbin/mtr was the solution.
>>
>> Carl
>>
>
> The ping issue between Windows vs Linux is the size of the ICMP packet. I
> believe a router (in that thread a while back) was refusing Linux pings,
> based on the size. As far as I know, this would only affect equipment
> requiring Windows based pings. A ping to a normal router should return as
> expected regardless of the OS.
>
> - James W.
>

Yep, the only difference is the size. In general, Microsoft systems use
32 bytes as default packet size, Unix systems 64 and Netware systems 40.
Usually, increasing packet size reveals router issue. You can check it
using the -L option in Windows and the -s option in Linux.

Jan Kalcic

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