Matthias Schneider wrote:
> Zitat von "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>:
>
>> Hi folks,
>>
>> Looking at the SIP protocol with ethereal I see a lot of UDP checksum
>> errors for Invite, Register, Subscibe, etc. Is this something that could
>> be fixed?
>>
>> Regards
>>
>> Harri
>>
> Harri,
> possibly you have one of those ethernet cards with a neat driver that shifts
> the
> checksum generation to the network adaptor itself? In that case on the level
> captured with ethereal you will not be able to see any correct checksum since
> it will be inserted once the frame was passed from the driver to the
> networking
> hardware ... So there are two ways to get rid of these warnings, one is to
> disable this check in ethereal, the other is deactivating this support in your
> network adaptor driver (with a slight performance loss).
If this was the case, you would see UDP checksum errors on ALL packets,
not just the ones from Ekiga.
SIP can generate quite large PDUs, which must fit into UDP packets. If
the PDUs are too large, they will be truncated.
Can you tell from the Ethereal (now WireShark) log if the packets are
complete?
Craig
-----------------------------------------------------------------------
Craig Southeren Post Increment – VoIP Consulting and Software
[EMAIL PROTECTED] www.postincrement.com.au
Phone: +61 243654666 ICQ: #86852844
Fax: +61 243656905 MSN: [EMAIL PROTECTED]
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"Science is the poetry of reality." Richard Dawkins
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