[ovs-discuss] invalid Ethertype 0 in flow key

[Ben Pfaff]

This is an unusual problem that I haven't seen reported by others.  Is
there anything special about your machine, your kernel, your build,
etc.?

Whether you specify dst_port should not make a difference.  This is
implemented at a low level, so I don't know why it would change the
behavior you see.

On Sat, Feb 17, 2018 at 04:20:36AM +0500, Jamshaid Faisal wrote:
> hmm i got some more info actually
> if i use options:dst_port=xxxxx  in vxlan setup command above, i dont get
> those errors in log. It means i have to use dst_port
> however i read this in documents
> 
> "By default, Open vSwitch will use the assigned IANA port for VXLAN, which
> is 4789"
> 
> Whats really going on there, VXLAN works without specifying dst_port but
> with these errors in log.
> so should i use dst_port ?
> 
> On Sat, Feb 17, 2018 at 4:08 AM, Jamshaid Faisal <j.faisal at gmail.com> wrote:
> 
> > I got some more details, Here is exactly how to get it on a clean install
> >
> > rm -rf /etc/openvswitch/conf.db
> > service openvswitch restart
> > ovs-vsctl add-br mybridge
> > ovs-vsctl --may-exist add-port mybridge myport -- set interface myport
> > type=vxlan options:remote_ip=10.1.1.1
> >
> > And there you go, i start getting below lines in /var/log/messages
> >
> > ovs-vswitchd: ovs|00001|odp_util(revalidator18)|ERR|invalid Ethertype 0
> > in flow key
> > ovs-vswitchd: ovs|00002|odp_util(revalidator18)|ERR|invalid Ethertype 0
> > in flow key
> > ovs-vswitchd: ovs|00003|odp_util(revalidator18)|ERR|invalid Ethertype 0
> > in flow key
> > ovs-vswitchd: ovs|00004|odp_util(revalidator18)|ERR|invalid Ethertype 0
> > in flow key
> > ovs-vswitchd: ovs|00005|odp_util(revalidator18)|ERR|invalid Ethertype 0
> > in flow key
> >
> > What i am doing wrong?
> >
> > On Tue, Feb 13, 2018 at 1:10 AM, Jamshaid Faisal <j.faisal at gmail.com>
> > wrote:
> >
> >> Hello
> >>
> >> Lately i have seen a lot of below messages in log (/var/log/messages). It
> >> is happening no matter which OVS version i use. Below log is from ovs 2.7.2
> >>
> >>
> >> ===========================
> >> Feb 12 12:03:21 SGP1-1-10 ovs-vswitchd: ovs|00135|odp_util(revalidator72)|ERR|Dropped
> >> 27 log messages in last 58 seconds (most recently, 3 seconds ago) due to
> >> excessive rate
> >> Feb 12 12:03:21 SGP1-1-10 ovs-vswitchd: ovs|00136|odp_util(revalidator72)|ERR|invalid
> >> Ethertype 0 in flow key
> >> ===========================
> >>
> >>
> >> They even happens with minimum config without vxlan etc.
> >> I am using XEN and its hot-plug script vif-openvsiwtch. Openvswitch is
> >> compiled with default options.
> >>
> >> What does these messages really mean?
> >>
> >> I dont see any functional issues, VMs have network, VXLAN also works
> >> fine,  But why lot of above messages in log ?
> >>
> >> Please help.
> >>
> >> Regards
> >>
> >>
> >

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