[ovirt-users] Fwd: oVirt / OVN / MTU

[Devin Acosta]

Marcin / Lance,

Not sure if the list was working correctly, I couldn't see that my message
below made it to the list. If I need to change the MTU settings for OVN /
OpenVSwitch to something lower than 1500, what is the best way to do this?
We noticed that some instances (ie: Windows 2012R2) are having issues with
the default MTU of 1500, I think there is an issue at the upper layers, and
we can get it to work if we manually set the MTU on the instance to say
1400. Is there an easy way to do this so that any VM's that come up
automatically get MTU of 1400?

Devin

---------- Forwarded message ----------
From: Devin Acosta <devin at pabstatencio.com>
Date: Fri, Dec 9, 2016 at 2:02 PM
Subject: oVirt / OVN / MTU
To: users <Users at ovirt.org>



We are running oVirt 4.0.5 and we have OVN working to provide a Virtual
Layer 2 network. We are noticing that because the OVN is using Geneve and
between all the firewalls and networks it crosses we are running into an
MTU issue. What is the best suggested way to lower say the entire OVN
network to say MTU of 1400, and also allow for fragmenting packets?


-- 

Devin Acosta
Red Hat Certified Architect, LinuxStack
602-354-1220 || devin at linuxguru.co



-- 

Devin Acosta
Red Hat Certified Architect, LinuxStack
602-354-1220 || devin at linuxguru.co
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