If you mean "Administration" -> "Providers" -> "Ovirt-provider-ovn" -> it is enabled.
Best Regards, Strahil Nikolov В петък, 30 октомври 2020 г., 21:10:02 Гринуич+2, Strahil Nikolov <hunter86...@yahoo.com> написа: Any hint for the location of "Automatic Synchronization" in UI ? Best Regards, Strahil Nikolov В петък, 30 октомври 2020 г., 20:16:13 Гринуич+2, Dominik Holler <dhol...@redhat.com> написа: On Fri, Oct 30, 2020 at 7:03 PM Strahil Nikolov <hunter86...@yahoo.com> wrote: > in 4.3.10's UI it shows 1500 :) > This might be just a misleading representation of the default value or an unknown value. If "Automatic Synchronization" is enabled for the ovirt-provider-ovn in oVirt Engine, the value should be updated in Engine to the correct after the next synchronization in the background. > > > > > > В петък, 30 октомври 2020 г., 13:25:05 Гринуич+2, Dominik Holler > <dhol...@redhat.com> написа: > > > > > > > > On Thu, Oct 29, 2020 at 9:36 PM Alex K <rightkickt...@gmail.com> wrote: >> >> >> On Tue, Oct 27, 2020, 02:49 Strahil Nikolov via Users <users@ovirt.org> >> wrote: >>> Hello All, >>> >>> I would like to learn more about OVN and especially the maximum MTU that I >>> can use in my environment. >>> >>> Current Setup 4.3.10 >>> Network was created via UI -> MTU Custom -> 8976 -> Create on External >>> Provider -> Connect to Physical Network >>> >>> So my physical connection is MTU 9000 and I have read that Geneve uses 24 >>> bits (maybe that's wrong ?) , thus I have reduced the MTU to 8976. >> From the internet draft it seems that the tunnel header + reserved bits >> comprise 64 bits. A common practice for Geneve implementations is to use >> 8900 mtu for VMs when having 9000 mtu physical network. >> > > Ack, this is a safe choice. > In oVirt's default configuration, an overhead of 58 bytes > ( = 20 IPv4 header + 8 UDP header + 16 GENEVE Ethernet header (including 8 > bytes options) + 14 bytes inner Ethernet header) > is added. > This is why the default MTU for OVN networks in oVirt is 1442 bytes, which > assumes 1500 bytes MTU in the physical network. > > > >> >> The draft: >> https://tools.ietf.org/html/draft-ietf-nvo3-geneve-08 >>> >>> I did some testing on the VMs and ping with payload of '8914' was the >>> maximum I could pass without fragmenting and thus the MTU on the VMs was >>> set to 8942. >>> >>> Did I correctly configure the test network's MTU and am I understanding it >>> correctly that we need extra 34 bits inside the network for encapsulation ? >>> > > You could check with packet analyzers like tcpdump and wireshark. > >>> I have checked >>>https://www.ovirt.org/develop/release-management/features/network/managed_mtu_for_vm_networks.html >>> but I don't see any refference how to calculate the max MTU. >>> >>> >>> Best Regards, >>> Strahil Nikolov >>> _______________________________________________ >>> Users mailing list -- users@ovirt.org >>> To unsubscribe send an email to users-le...@ovirt.org >>> Privacy Statement: https://www.ovirt.org/privacy-policy.html >>> oVirt Code of Conduct: >>> https://www.ovirt.org/community/about/community-guidelines/ >>> List Archives: >>> https://lists.ovirt.org/archives/list/users@ovirt.org/message/CKNS5T5KE2W5EIXBTGQDU3URKHQDVAM4/ >>> >>> >> _______________________________________________ >> Users mailing list -- users@ovirt.org >> To unsubscribe send an email to users-le...@ovirt.org >> Privacy Statement: https://www.ovirt.org/privacy-policy.html >> oVirt Code of Conduct: >> https://www.ovirt.org/community/about/community-guidelines/ >> List Archives: >> https://lists.ovirt.org/archives/list/users@ovirt.org/message/VIDP3MLYHWG2WXQ6JB6EHK66J5WBOMVT/ >> >> > _______________________________________________ > Users mailing list -- users@ovirt.org > To unsubscribe send an email to users-le...@ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/7UN5DXXKXN3KBLTLGXIPTGWVF4ODKKUB/ > > _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/PIC2CYCXCVPKSVQJVQFFCXITEG5YTK6N/
