Hi Mikahil, I have used openstack xena release with ovn 21.09 installed from UCA repo from canonical, it works fine.
# ovn-nbctl get NB_Global . options:max_tunid "16711680" I have set below options for geneve, [ml2_type_geneve] vni_ranges = 1:65536 max_header_size = 38 [ml2_type_vlan] network_vlan_ranges = vlannet1:3500:3600 Though I am not using vxlan. Ammad On Tue, Nov 16, 2021 at 4:53 PM Frode Nordahl <frode.nord...@canonical.com> wrote: > On Fri, Nov 12, 2021 at 6:13 PM Mikhail Okhrimenko > <mikhail.okhrime...@ps.kz> wrote: > > > > Hi, > > > > I am trying to set up OVN using Openstack. > > > > OVN 21.06 > > Openstack wallaby > > > > When creating a network in openstack, we get an error: > > > > "Segmentation ID should be lower or equal to 4095." > > > > ml2 config: > > > > # ML2 general > > [ml2] > > type_drivers = flat,vlan,vxlan,geneve > > tenant_network_types = geneve > > mechanism_drivers = ovn > > extension_drivers = port_security,dns > > physical_network_mtus = vlan:1500,floating:1500 > > path_mtu = 1558 > > overlay_ip_version = 4 > > > > # ML2 geneve networks > > [ml2_type_geneve] > > vni_ranges = 5000:6000 > > max_header_size = 38 > > > > # ML2 VLAN networks > > [ml2_type_vlan] > > network_vlan_ranges = vlan:3900:3999 > > > > # ML2 VXLAN networks > > [ml2_type_vxlan] > > vni_ranges = 5000:6000 > > > > > > # Security groups > > [securitygroup] > > enable_security_group = True > > firewall_driver = > neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver > > > > [ovn] > > ovn_nb_connection = tcp:<IP>:6641 > > ovn_sb_connection = tcp:<IP>:6642 > > ovn_l3_scheduler = leastloaded > > ovn_metadata_enabled = True > > isolated_metadata = True > > > > > > When I execute the command > > $ ovn-nbctl get NB_Global. options:max_tunid > > or > > $ ovn-sbctl get SB_Global. options:max_tunid > > I get "4095" > > > > If I manually try to change max_tunid using the command > > $ ovn-nbctl set NB_Global. options:max_tunid="16777215" > > or > > $ ovn-sbctl set SB_Global. options:max_tunid="16777215" > > then no change occurs. > > > > How can I change max_tunid from 4095 to 16777215 for supporting geneve > or vxlan networks in Openstack. > > This bug report should probably be directed at OpenStack Neutron, I > believe they manage bugs using Launchpad [0]. > > However, I can also provide some insights on the topic. For overlay > type networks, Neutron will actually not provide OVN with the > segmentation ID, the VNI will be allocated by OVN itself. So to solve > your concrete problem now you can just set your vni_ranges option to a > value below 4095 and unless you are going to create 4096+ networks > today this should work fine. > > OVN does not create datapaths with overlapping VNIs, so you should not > have issues with overlaps regardless of what Neutron's internal > representation of the VNI is. > > 0: https://bugs.launchpad.net/neutron/+filebug > > -- > Frode Nordahl > > > > > -- > > --- > > > > Mikhail Okhrimenko > > > > System administrator at "PS Internet Company" > > > > _______________________________________________ > > discuss mailing list > > disc...@openvswitch.org > > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss > _______________________________________________ > discuss mailing list > disc...@openvswitch.org > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss > -- Regards, Syed Ammad Ali
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