[Olsr-dev] Feedback on current OL
Mon Jun 9 11:48:36 CEST 2008
hmm (as bernd has stated) olsrd just passes any outgoing OLSR packet down the UDP
network stack and relies on the kernel (or a offload driver)
to calculate the UDP checksum.
looks like something is broken there.
David Murray wrote:
> Quoting Hannes Gredler <(spam-protected)>:
>> did you see UDP checksum errors in outgoing or incoming packets ?
> They are outgoing hellos. The interface is an Ethernet Interface.
>> David Murray wrote:
>>> Hi guys, just a bit of feedback on the latest development branch
>>> found here . 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
>>>  http://gredler.at/hg/olsrd/archive/tip.tar.gz
More information about the Olsr-dev