Hi Thiago, If possible, can you setup a monitoring tool on the host and check the network packets on the host and the VMs for the respective interface? This will confirm whether the packets are dropped or contain errors or successful.
Regards, Krishnaprasad From: Martinx - ジェームズ [mailto:thiagocmarti...@gmail.com] Sent: Freitag, 10. Juli 2015 20:17 To: openstack@lists.openstack.org Subject: Re: [Openstack] 99.5% of packets are disappearing somewhere between the Linux Bridge (brqxxxxzzzz-yy) and the tap (tapxxxxzzzz-yy). Guys, This problem that I'm facing, seems to be unrelated to OpenStack Neutron. What I did? Reconfigured my /etc/network/interfaces file with: --- auto vlanXXXX iface vlanXXXX inet manual vlan_raw_device eth3 auto brqvlanXXXX-aa iface brqvlanXXXX-aa inet manual bridge_ports vlanXXXX bridge_maxwait 5 bridge_fd 1 bridge_stp off --- Started a KVM VM using: --- <interface type='bridge'> <mac address='52:54:00:ba:46:c5'/> <source bridge='brqvlanXXXX-aa'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> --- Same problem! So, OpenStack seems to have nothing to do with this problem that I'm facing... I'll keep investigating it... Cheers! Thiago On 10 July 2015 at 14:14, Martinx - ジェームズ <thiagocmarti...@gmail.com<mailto:thiagocmarti...@gmail.com>> wrote: Cynthia, Attaching a "regular KVM Virtual Machine" directly to the bridge, also did not worked. I'll try to create this eth3.XXXX, a LinuxBridge "brqxxxxzzzz-yy" on top of it and a new KVM VM, completely outside of OpenStack but, on top of this very same server. Thanks again for the tip! Thiago On 9 July 2015 at 22:58, Martinx - ジェームズ <thiagocmarti...@gmail.com<mailto:thiagocmarti...@gmail.com>> wrote: Hi Cynthia, That's actually a very good idea! I was thinking about this as well... But still did not tried it. Basically I need to stop "nova-compute" and edit Instance configuration with "virsh edit instance-id"... Sound very easy to try... Attaching an "alien" instance directly to the "brq50b13311-fa" sounds even easier. I'll definitively give it a try! Thanks! On 9 July 2015 at 05:20, Cynthia Lopes <clsacrame...@gmail.com<mailto:clsacrame...@gmail.com>> wrote: Hi, We had something similar once but the cause was a miss config in our LACP bonding... By your config you don't seem to be using bonding but maybe something external to neutron is causing you the problem. If you manually launch a VM connected to the bridge brq50b13311-fa, can you see the packets ? 2015-07-09 5:43 GMT+02:00 Kevin Benton <blak...@gmail.com<mailto:blak...@gmail.com>>: I wonder if l2 population is interferring. Can you try disabling l2 population on the agent side so forwarding entries aren't being setup and see if the issue persists? On Jul 8, 2015 8:20 PM, "Martinx - ジェームズ" <thiagocmarti...@gmail.com<mailto:thiagocmarti...@gmail.com>> wrote: On 8 July 2015 at 22:50, Jerry Zhao <xyzje...@gmail.com<mailto:xyzje...@gmail.com>> wrote: Since you are using vxlan tunnel, have you increased the MTU on all compute nodes and network node to accommodate the vxlan tunnel packets? http://docs.openstack.org/juno/config-reference/content/networking-options-plugins-ml2.html Yes, all my VXLAN networks have MTU=1450. I'm not seeing any problems with my VXLAN networks. My problem lies exclusively within the "VLAN Provider Networks" / related Neutron LinuxBridges. I'm attaching my Instances directly to a physical network of the Compute Node itself (1 tagged VLAN for each Instance). But, it doesn't work as expected. Thanks! _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Cynthia Lopes do Sacramento
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