All I have installed kilo successfully using packstack to a combination of controller and compute nodes, I am able to successfully create instances however the virtual interfaces are using an MTU of 1500 even though all the bridge interfaces are defined as 9000. I need to ensure that all the virtual interfaces are using an mtu of 9000 but this seems to be getting defined by some other process regardless of how the physical interfaces are configured.
Is there a known limitation or issue with OVS plugins over ML2 or another plugin that causes issues with defining MTU. You can see below that br-int is set to 1500 ! is this controlling all the other virtual interfaces ? do you have to bind br-int to a real physical interface in order for it to be correctly set ? none of this is done or seen as an option in packstack so it means additional configuration is that really what is needed ? [root@blade15 ~]# ifconfig | grep mtu br20: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br100: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br111: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br112: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br201: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br202: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br210: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br220: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br400: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 br-int: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 br-tun: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.20: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.100: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.111: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.112: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.201: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.202: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.210: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.220: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 enp2s0f0.400: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 int-br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 9000 phy-br-ex: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000 qbr16cfbed6-ba: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbr517cc995-1a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbr7cd380f7-44: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbr8e16ade0-98: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbrbe028441-60: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbre998f0fd-33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qbred796a27-14: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 qvb16cfbed6-ba: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvb517cc995-1a: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvb7cd380f7-44: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvb8e16ade0-98: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvbbe028441-60: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvbe998f0fd-33: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvbed796a27-14: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvo16cfbed6-ba: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvo517cc995-1a: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvo7cd380f7-44: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvo8e16ade0-98: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvobe028441-60: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvoe998f0fd-33: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 qvoed796a27-14: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500 tap16cfbed6-ba: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 tap517cc995-1a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 tap7cd380f7-44: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 tap8e16ade0-98: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 tapbe028441-60: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 tape998f0fd-33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 taped796a27-14: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 Any help or guidance would be appreciated. Thanks Darren
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