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

[Sean Hefty]

Michael Krause wrote:
>>> What about the case of iWARP <-> IB ?
>>
>> Crossing IB shouldn't matter.  iWarp should simply cross the IB subnet 
>> using IPoIB.  You could build a gateway to make the transfer across IB 
>> more efficient, but it's not required.
> 
> I don't understand this statement.  iWARP is RDMA based and if someone 

I was referring to the case where both endpoints are running over iWarp, with IB 
being one of the subnets being crossed.  I believe that you're referring to one 
side running over iWarp, and the other running over IB, with an application 
level gateway in between.

For the latter case, I would think that the gateway needs to establish iWarp 
connections for any IP addresses that reside on the IB subnet behind it, with a 
separate IB connection on the back-end.  It seems to me that this would occur 
transparently to the application using iWarp.

- Sean