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

[Hal Rosenstock]

On Sun, 2005-10-09 at 10:19, Sean Hefty wrote: 
> >I think iWARP can be on top of TCP or SCTP. But why wouldn't it care ?
> 
> I'm referring to the case that iWarp is running over TCP.  I know that it can
> run over SCTP, but I'm not familiar with the details of that protocol.  With
> TCP, this is an end-to-end connection, so layering iWarp over it, only the
> endpoints need to deal with it.  I believe the same is true for SCTP.

Yes, SCTP is similar in those regards.

> >Doesn't a routing decision still need to be made at the IP layer ?
> 
> Routing of the IP packets is done at the IP layer, but I don't see how this
> affects iWarp.

It does under the "covers", those covers being IP routing.

> >Doesn't the IP next hop need to be determined (e.g. gateway when the
> >destination is off the local IP subnet) ? Is there something that
> >precludes iWARP from working across IP subnets ?
> 
> I can't think of anything that would preclude iWarp from working 
> across subnets.

Doesn't the IP next hop need determining in that case ? Why is that not
relevant ? I don't think the iWARP connection is end to end in all
cases.

-- Hal