hope this helps.
http://lists.openstack.org/pipermail/openstack/2014-January/005011.html On Tue, Oct 6, 2015 at 2:18 PM, BUTTS, Darren (Darren)** CTR ** < darren.bu...@alcatel-lucent.com> wrote: > 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 > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > -- Nasir Mahmood
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