[asterisk-users] Dundi Issues

[Drew Gibson]

Jeremy Mann wrote:
> I'm not aware of any offloading done on this particular box, it's an HP ML110 G5 using the onboard NIC.
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Drew Gibson
> Sent: Wednesday, November 05, 2008 9:30 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Dundi Issues
>
> Jeremy Mann wrote:
>   
>> I don't know if it's related, but when doing a packet sniff with
>> wireshark, I see UDP checksum incorrect messages:
>>
>> 0.058230 source -> destination UDP Source port: 4520 Destination port:
>> 4520 [UDP CHECKSUM INCORRECT]
>>
>>     
>
> Be careful with this error, some network cards that can do "IP Offload"
> processing will show up with bad checksums in Wireshark. Check the specs
> for your NIC, this may be a Red Herring (or it might not! ).
>
>   

The HP docs indicate a setting for enable/disable checksum offload, try 
looking at the packets "on-the-wire" rather than on the server itself.

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00846707/c00846707.pdf

regards,

Drew

-- 
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com