In that doc it's not showing how to change MTU of existing created subnets. currently i am doing following on each veth pair but its not permanent, so how do i make it permanent across reboot ip netns exec qrouter-0363480e-01d7-4557-a3b9-e49244aa6a98 ifconfig qr-9284543e-58 mtu 1500 Is there any way or API so we can change this value in subnet [root at controller-5-1 neutron(keystone_admin)]# neutron net-show d9d691c2-ec91-48a1-9813-e472af249dae | grep mtu | mtu | 1450 | [root at ostack-controller-5-1 neutron(keystone_admin)]# On Thu, Nov 10, 2016 at 12:35 PM, Rick Jones <rick.jones2 at hpe.com> wrote: > On 11/10/2016 09:23 AM, Satish Patel wrote: >> >> figure out.. just need to restart neutron-server and you have to >> delete existing network and re-create new network to get those change. >> >> How to change MTU on existing network-subnet ? > > > You would likely have to find all the virtual interfaces for it and alter > them manually on the compute/network nodes. > > The HPE Helion docs on changing MTU, while describing some things specific > to HPE Helion, does include the caveat about existing networks not being > altered: > > https://docs.hpcloud.com/hos-3.x/#helion/networking/configure_mtu.html > > rick jones > > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack at lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack