*** This bug is a duplicate of bug 1542475 ***
https://bugs.launchpad.net/bugs/1542475
In Mitaka, you can now set global_physnet_mtu to the underlying NIC MTU
value, and then all devices managed by nova and neutron should adopt to
that, including considerations for tunneling overhead.
** This bug has been marked a duplicate of bug 1542475
MTU concerns for the Open vSwitch agent
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https://bugs.launchpad.net/bugs/1311097
Title:
can't set MTU size for router interface
Status in neutron:
Confirmed
Bug description:
when working with jumbo frames you can set MTU in nova.conf for the instaces'
tap devices, and you can set it in neturon/plugins.ini for br-int. this allows
you to work with jumbo frames inside a network.
However, if you want to work with jumbo frames across networks, there's no
way to configure this on a router/l3-agent, and you have to manually set the
mtu on the nics inside the namespaces
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