i dont know whether there is any openstack config file to change MTU of integration and tunnel bridge.You can manually update in your os network config file
i am using ubuntu servers so added this in /etc/network/interfaces added br-tun.br-int and physical NIC with new MTU value eg: auto br-tun iface br-tun inet static address 0.0.0.0 MTU 8900 auto eth3 iface eth3 inet static address 172.16.10.3 netmask 255.255.255.0 mtu 8900 for changing MTU of linux bridge i suppose its "qbr-" add network_device_mtu = 8900 in nova.conf on compute nodes. On Mon, Feb 9, 2015 at 7:05 PM, Danny Choi (dannchoi) <dannc...@cisco.com> wrote: > Hello, > > Can you tell me exactly how to change the br-tun and br-int in its config > file? > Which file and where? > > I’m using OVS which by default also has the Linux bridge. How to take care > of it? > > Thanks, > Danny > > > ------------------------------------------- > Date: Mon, 9 Feb 2015 15:01:57 +0530 > From: mad Engineer <themadengin...@gmail.com> > To: Eren T?rkay <er...@skyatlas.com> > Cc: "openstack@lists.openstack.org" <openstack@lists.openstack.org> > Subject: Re: [Openstack] higher MTU for all interfaces > Message-ID: > <can8oo4a_xcgm86_kxeyskoa_wof1zqwwosmgmhtdkltjftf...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > 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 T?rkay <er...@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/ > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > > _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
