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

[Yaron Haviv]

> -----Original Message-----
> From: openib-general-bounces at openib.org [mailto:openib-general-
> bounces at openib.org] On Behalf Of Sean Hefty
> Sent: Friday, October 07, 2005 12:40 PM
> To: 'Michael Krause'; Caitlin Bestler
> Cc: Openib
> Subject: RE: [openib-general] [RFC] IB address translation using ARP
> 
> >It would be best to define a CM architecture that enabled
communication
> >between like endpoints and avoid the gateway dilemma. Let the gateway
> >provider work out such issues as there are many requirements already
> >on each side of these interconnects.
> 
> 
> I've given this some more thought since the original postings and
agree
> with
> you.  It doesn't seem right to me to have the CM establish a
connection to
> something that is not the specified destination, under the assumption
that
> whatever is being connected to is a gateway.  I think it would be
better
> for the
> application to determine that the actual destination is on a different
> subnet,
> locate the gateway, and issue a connection request to the gateway.
> 
> - Sean
> 

Sean, I believe this is exactly how it is been proposed
The gateway is the endpoint in IB, and the IB CM request is done against
the gateway, the gateway may decide to create its own connection on the
other side based on IB headers or Private data or even application data
(depend on the type of the gateway), this just requires that traffic
targeted to a certain IP range/subnet/non-local will end up in the
gateway without the need to specify address by address individually
(just like its done in IP)

Yaron

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