[Openstack] higher MTU for all interfaces

mad Engineer themadengin33r at gmail.com
Mon Feb 9 09:31:57 UTC 2015

thanks,i manually changed br-tun br-int in its network config file and
now its working across reboot.

On Mon, Feb 9, 2015 at 12:42 PM, Eren Türkay <erent at skyatlas.com> wrote:
> On 08-02-2015 21:56, mad Engineer wrote:
>> Hello all is there any way we can change MTU of all relevant
>> interfaces of instances,if i set
>> dhcp-option-force=26,1400 will it change MTU of all relevant
>> interfaces like qbr qvo br-int etc etc
>> is there any way to change MTU of all neutron interfaces.
> Hello,
> There is an option "network_device_mtu" on nova.conf. When tap,qvo,qbr bridges
> are setup, it will use this setting to set MTU. However, from my experience,
> there is no setting to set br-tun, br-int MTU setting.
> I need to note that DHCP option will only cause MTU setting inside VMs.
> You can follow the bug report about setting MTUs on br-int, br-tun interfaces.
> https://bugs.launchpad.net/neutron/+bug/1419069
> Regards,
> Eren
> --
> System Administrator
> https://skyatlas.com/
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