[Olsr-dev] Feedback on current OL

David Murray (spam-protected)
Mon Jun 9 11:27:50 CEST 2008

Quoting Hannes Gredler <(spam-protected)>:

> david,
> did you see UDP checksum errors in outgoing or incoming packets ?

They are outgoing hellos. The interface is an Ethernet Interface.
> /hannes
> David Murray wrote:
>> Hi guys, just a bit of feedback on the latest development branch 
>> found here [1]. I have had it running in my test setup (8 dual radio 
>> ALIX nodes) for about 3-4 days. It seems to be working great, 
>> however, one problem I have found is with the the metric.
>> Currently, I have a 100mbit Ethernet link that is being given a 
>> metric of ~1.150. Iperf shows that this link provides ~100 mbit 
>> which means that there is nothing physically wrong with the link. To 
>> investigate a little further I pulled up wireshark and took a look 
>> at the OLSR hellos.
>> The wireshark output was showing some UDP checksum errors "maybe 
>> caused by UDP checkum offload" on some olsr hello packets. Perhaps 
>> if anyone else is using this branch they could confirm whether they 
>> are also getting the errors or if it is something specific with my 
>> equipment.
>> Thanks
>> Dave
>> [1] http://gredler.at/hg/olsrd/archive/tip.tar.gz

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