Wireshark, netperf and sctp problem

[frank.schuster01 at web.de]

Hi Michael,

yeah, I see dropped packages.
But did you mean only that wireshark didn't capture all packages on ubuntu?
Or did you mean that the packages will be really dropped by the kernel?

Because I think it's the first one, can I display the dropped packages - is there any configuration for wireshark?

Regards
Frank

> Hi Frank,
> 
> you might want to send both wireshark trace to me and I would have a look.
> 
> If it is a bulk transfer, maybe the Ubuntu machine did not capture all packets.
> The number of dropped packets is displayed when you stop capturing.
> 
> Best regards
> Michael
> 
> On Feb 18, 2010, at 3:35 PM, frank.schuster01 at web.de wrote:
> 
> > Hello,
> > 
> > I have a problem with my little network test.
> > I want to test sctp between ubuntu and freebsd.
> > On ubuntu I wrote a iptables rule which delete every tenth (10) data package. Freebsd has no firewall rules.
> > But only ubuntu sends data and freebsd only acknowledge this data (i did the test with netperf).
> > 
> > On the sending side (ubuntu) I see in wireshark 24 data packages, and on the receiving side (freebsd) I saw 82 packages.
> > But I can't explain, why freebsd receives more packages as delivered from ubuntu? (I have currently only one freebsd system).
> > 
> > Any ideas or  something additional notes to help me?
> > 
> > Is the problem by wireshark or the kernel implementation?
> > 
> > Regards
> > Frank
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