[openib-general] [RFC] IB address translation using ARP

Hal Rosenstock halr at voltaire.com
Fri Oct 7 16:48:00 PDT 2005


On Fri, 2005-10-07 at 17:30, Sean Hefty wrote:
> Hal Rosenstock wrote:
> >> If the RDMA CM ran a protocol that ensured that data sent from the source
> >> reached the actual destination, then this would make more sense to me.  But
> >> the protocol is coming from the client.
> > 
> > Wouldn't the gateway/host reject or drop the connection if it couldn't do
> > what was required ?
> 
> I would assume so, and maybe that's sufficient.  The one problem that I see if
> this feature weren't in the RDMA CM is that clients may need to be transport 
> aware.  (Assuming that an iWarp connection would go directly to the destination.)

Would an iWARP connection jump across IP subnets ? It would need to
determine that it could do this (ala NHRP with ATM). Also, could there
be other RDMA networks between them (like IB) ?

-- Hal




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