We have multi-node cluster and i am trying to change MTU setting of
qrouter but it doesn't working.

default MTU setting on neutron router interface is 1450 MTU  i want to
change to 1500

[root@controller neutron(keystone_admin)]# ip netns exec
qrouter-b17c9641-27f7-4328-82b0-c3132cccdcf1 ifconfig | grep mtu
...
qr-edb341ca-ac: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1450


I have changed following file

neutron.conf   ->  global_physnet_mtu = 1550
ml2_conf.ini    ->  path_mtu = 1550

and restarted following services

systemctl restart neutron-openvswitch-agent
systemctl restart neutron-l3-agent.service
systemctl restart neutron-server.service


Now i am creating new router and attaching subnet but still its using
1450 MTU what is the solution for it? do i need to reboot BOX??

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