Hi Andreas, Are you using ifconfig to set the MTU? Those settings can be removed at any time at XenServer's discretion. You may want to consider using interface reconfigure / xapi / xe / the UI if you want persistent settings.
-Reid On Mon, Nov 11, 2013 at 1:39 AM, Andreas Pflug <pgad...@pse-consulting.de>wrote: > I'm running ovs (1.4.2) for xen bridging from debian 7.1. > > The physical interface is configured to the max possible MTU of 9216, > because there's one ovs port configured for san access with a VLAN tag > and MTU of 9190 that's used by open-iscsi initiator exclusively. The > machine's main/management interface is configured to default MTU 1500. > > If I start a VM, its VIFs will be created with MTU=1500. When they are > added to the ovs bridge, subsequently all non-physical interfaces will > be reset to MTU=1500, including the (for common network traffic unused) > san port. The same will happen if I further reduce one interface MTU > manually; its setting will propagate to all ports. This appears > unexpected to me and is undesirable. > > How can I avoid this? > > Regards > Andreas > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss >
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