> -----Original Message----- > From: Michael S. Tsirkin [mailto:[EMAIL PROTECTED] > Sent: Monday, August 29, 2005 1:46 PM > To: Caitlin Bestler > Cc: Roland Dreier; [email protected] > Subject: Re: Re: RDMA Generic Connection Management > > Quoting Caitlin Bestler <[EMAIL PROTECTED]>: > > > APM might be one good reason to want to get more than one path, > > > would it not? > > > > But you would have to define automatic path migration in > > generic/transport neutral terms. I've actually come up with > > I dont see a problem. > > For the sake of this argument, lets assume APM cant be done > with iWARP. > How is an iWARP card different from an HCA on a fabric where > there's only a single path to a specific node then? >
There is a very important difference. The iWARP card *can* support automatic path migration that is not visible to the RDMA layer -- i.e.,it can move an L3 address to a new L2 address (port migration). As such it is very different from an IB device where all path migration that exists is visible. Making it even more complex iWARP/SCTP could support both L4 and L3 migration. _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
