Re: capture issue with passive network tap - ETHERNET FRAME CHECK SEQUENCE INCORRECT - now with attachments

[Jaap Keuter <jaap.keuter () xs4all nl>]

Hi,

Try using this display filter:  frame.interface_id == 1
Then you’ll see all the frames with checksum errors. Now change it to ‘0’. No errors to be seen. 
So, these USB-Ethernet devices perform differently, whereby the the one on interface 1 is questionable.

Thanks,
Jaap


> On 9 Feb 2017, at 06:58, Dennis Schneck <dennisschneck () web de> wrote:
>
>  
> Hello,
> i tryed to capture with a passive network tap
> ( wiring like: http://www.it-dienstleistungen.de/wp-content/uploads/passive_fig_2-300x270.gif 
> <http://www.it-dienstleistungen.de/wp-content/uploads/passive_fig_2-300x270.gif> )
> a host with 100MB/FULL, use two diffrent usb-ethernet cards ( with 100MB/FULL too, checked with ethtool )
> on "tap a" and "tab b".
> See in wireshark "Info column": ETHERNET FRAME CHECK SEQUENCE INCORRECT
> Is there a setup for the usb-ethernet cards
> to get it work fine ? What did I wrong ?
>  
> Wireshark is running on a Linux System
>  
> http:  ETHERNET FRAME CHECK SEQUENCE INCORRECT
> icmp:  (no response found!) ETHERNET FRAME CHECK SEQUENCE INCORRECT
>
> Thanks
> Dennis
>  
>  
> <01_interfaces.png><02_wireshark_icmp_displayfilter.png><03_wireshark_http_displayfilter.png><capture.pcapng>___________________________________________________________________________
> Sent via:    Wireshark-users mailing list <wireshark-users () wireshark org>
> Archives:    https://www.wireshark.org/lists/wireshark-users
> Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-users
>             mailto:wireshark-users-request () wireshark org?subject=unsubscribe

___________________________________________________________________________
Sent via:    Wireshark-users mailing list <wireshark-users () wireshark org>
Archives:    https://www.wireshark.org/lists/wireshark-users
Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-users
             mailto:wireshark-users-request () wireshark org?subject=unsubscribe