[ovs-discuss] Does OpenVswitch support IP over Infiniband yet?

[Chris Beasley]

Hi Ben,

Thanks.  Sorry I suppose I should have been a little more specific.

The issue that I can tell (from recent posts on the Citrix support forum) relates to the length of the MAC address.  Infiniband HBA's appear to have a length greater than 6 bytes (?) which was the limit I found OVS uses for MAC addresses in various posts.  This renders OVS from working when bridging Infiniband cards to Virtual Machines as it truncates to the MAC to 6 bytes and therefore cannot  use the HBA.  Using linux bridging does work, but for things like Xenserver I'm not sure what it would mean.

Cheers,

Chris

-----Original Message-----
From: Ben Pfaff [mailto:blp at nicira.com] 
Sent: Wednesday, 14 January 2015 9:35 a.m.
To: Chris Beasley
Cc: discuss at openvswitch.org
Subject: Re: [ovs-discuss] Does OpenVswitch support IP over Infiniband yet?

On Tue, Jan 13, 2015 at 08:32:55PM +0000, Chris Beasley wrote:
> I've read a number of mailing list posts and forum posts regarding the 
> use of IPoIB that seem to indicate a lack of support in Openvswitch 
> for the mac address length.  Has this been changed in the newer 
> versions?  I'm currently looking at infiniband HBAs for a cheap 10Gbps 
> network in Xenserver but unless OVS has support for the cards then 
> what I have read suggests it won't work well.

OVS doesn't have any special support for IP over Infiniband.