Hi Darragh, The ethernet of my "br-ex" interface is "eth2", the output of "ethtool -k eth2" is:
--- root@netnode-1:~# ethtool -k eth2 Offload parameters for eth2: rx-checksumming: on tx-checksumming: off scatter-gather: off tcp-segmentation-offload: off udp-fragmentation-offload: off generic-segmentation-offload: off generic-receive-offload: on large-receive-offload: off rx-vlan-offload: on tx-vlan-offload: on ntuple-filters: off receive-hashing: off --- And yes, my uplink router is a "Ubuntu KVM Virtual Machine", I have a valid public IPv4 (189.8.93.64/28) routed to my own data center. The OpenStack Network Node is connected to the uplink router (KVM VM) using a "GIGALan 3Com Manageable Switch". Tks for the tips! Best, Thiago On 25 November 2013 17:06, Darragh O'Reilly <1252...@bugs.launchpad.net>wrote: > Hi Thiago, > > from the tcpdump I see some packets are not being received and have to > be retransmitted. Also some packets are much greater than 1500 bytes, > but it seems only about 1500 are ACKed, which results in retransmissions > too. > > Can you provide the output of 'ethtool -k ethX' where ethX is the one in > br-ex. And if any offload stuff is on, disable it and retest. > > Can you tell us how your Neutron router is uplinked to the Internet? It > seems 189.8.93.65 is the gateway_ip for the neutron external subnet. > What kind of device is this? It's mac is 52:54:00:6a:5f:82, which seems > to have a vendor prefix used by KVM. > > Darragh. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1252900 > > Title: > Directional network performance issues with Neutron + OpenvSwitch > > To manage notifications about this bug go to: > https://bugs.launchpad.net/neutron/+bug/1252900/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1252900 Title: Directional network performance issues with Neutron + OpenvSwitch To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1252900/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs