Hi,
seems that you have TSO enabled?
you can check the offloading features of your NIC with ethtool.
Best,
Philip
Am 02.12.13 15:09, schrieb kevin parker:
Hi,
I am confused with this in dmesg
*dmesg |grep "mtu"*
[10674662.495400] openvswitch: xapi3: dropped over-mtu packet: 2853 > 1500
[10674662.495406] openvswitch: xapi3: dropped over-mtu packet: 2853 > 1500
[10674662.495411] openvswitch: xapi3: dropped over-mtu packet: 2853 > 1500
[10674662.495432] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[10674662.495435] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[10674662.495441] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[13413434.378976] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[13413434.378982] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[13413434.378989] openvswitch: xapi3: dropped over-mtu packet: 4082 > 1500
[13413434.379050] openvswitch: xapi3: dropped over-mtu packet: 2556 > 1500
[13413434.379054] openvswitch: xapi3: dropped over-mtu packet: 2556 > 1500
[13413434.379058] openvswitch: xapi3: dropped over-mtu packet: 2556 > 1500
All interfaces are configured with MTU of 1500 (netstat -i )and on
physical switch also it is 1500.
I dont understand why it is showing above in dmesg,can some one
explain me why something is trying to send Frames above 1500 and
getting blocked by ovs,even if no interface has an MTU of 1500 < .Is
there any way to find out what is trying to send frames larger than 1500.
*
*
ovs-vsctl -V
ovs-vsctl (Open vSwitch) 1.4.2
Compiled Nov 23 2012 12:41:37
*
*
*ovs-dpctl show *
system@xapi3:
lookups: hit:47665012972 missed:27317456871 lost:156544274
flows: 829
port 0: xapi3 (internal)
port 1: eth1
port 2: eth0
port 4: xapi4 (internal)
port 31: vif28.0
port 32: vif29.0
port 33: vif30.0
*ovs-vsctl list-ports xapi3*
bond1
*ovs-appctl bond/show bond1*
bond_mode: active-backup
bond-hash-basis: 0
updelay: 31000 ms
downdelay: 200 ms
lacp_negotiated: false
slave eth1: enabled
active slave
may_enable: true
slave eth0: enabled
may_enable: true
Regards,
Kevin
**
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--
Philip Wette, M.Sc. E-Mail: we...@mail.upb.de
University of Paderborn Tel.: 05251 / 60-1716
Department of Computer Science
Computer Networks Group http://wwwcs.upb.de/cs/ag-karl
Warburger Straße 100 Room: O3.152
33098 Paderborn
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