Openstack ocata neutron jumbo frame support
Hi Guys
I just recant deployed openstack ocata using ubuntu-16.04, MAAS 2.1.3 and JUJU charm,
All my servers are set to use MTU=9000 on all connected interfaces(setting propagated via MAAS/DHCP)
I have set configuration flags in neutron-api charm to reflect MTU size, yet when i create networks its always uses MTU=1500
juju config neutron-api path-mtu=8600
juju config neutron-api global-
juju config neutron-api network-
juju config neutron-gateway instance-mtu=8500
When check interface MTU (phisical interface) all systems are reporting jumbo size (9000).
One thing i have spotted when checked OVS bridges the br-tun bridge MTU is only 1500
The behaviour is exactly same in both overlay setups vxlan/gre.
Im very new to openstack so please excuse my lack of expertise.
Thanks Pio
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