Open Stack

http://techbackground.blogspot.co.uk/2013/06/path-mtu-discovery-and-gre.html


-----Original Message-----
From: James Page [mailto:james.page at ubuntu.com] 
Sent: Wednesday, October 02, 2013 9:17 AM
To: openstack at lists.openstack.org
Subject: Re: [Openstack] Directional network performance issues with Neutron + OpenvSwitch

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Hi Jay

On 02/10/13 16:37, Jay Pipes wrote:
> Hi James, have you tried setting the MTU to a lower number of bytes, 
> instead of a higher-than-1500 setting? Say... 1454 instead of 1546?
> 
> Curious to see if that resolves the issue. If it does, then perhaps 
> there is a path somewhere that had a <1546 PMTU?

Do you mean in instances, or on the physical servers?

For context I hit this problem prior to tweaking MTU's (defaults of
1500 everywhere).


- --
James Page
Ubuntu and Debian Developer
james.page at ubuntu.com
jamespage at debian.org
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