[PVE-User] About GRE tunnels and the new OVS bridging

[Alexandre DERUMIER]

also, you can try disable gro offload on physical interfaces

https://bugs.launchpad.net/neutron/+bug/1252900

"ethtool --offload eth0 gro off"



----- Mail original ----- 

De: "Diaolin" <diaolin at diaolin.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: "pve-user pve.proxmox.com" <pve-user at pve.proxmox.com> 
Envoyé: Mardi 29 Avril 2014 14:46:15 
Objet: Re: [PVE-User] About GRE tunnels and the new OVS bridging 

Il 2014-04-29 14:29 Alexandre DERUMIER ha scritto: 
>>> No even with vxlan same disaster 
> 
> Are you sure that it's not a packet fragmentation problem ? 
> 
> mtu should be increase on physical switchs to handle the overhead of 
> vxlan (I think with ipsec too) 
> 
> http://www.borgcube.com/blogs/2012/03/vxlan-primer-part-2-lets-get-physical/ 
> 
> 

yes, the best effort with 1432 
but in a Gigabit scenario this cannot produce WITHOUT encryption a 
60% degradation... (i'm speaking about BEST results) 

I've written the patch but i will not distribute it until i 
find a valid motivation to use vxlan/gre instead of openvpn/VLAN 

I'm working on a openvpn solution for resolving the problem 
all automatic with mesh support 

Diaolin 


Diaolin 





--- 
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[Diaolin]