[openib-general] IPoIB and lid change

[Hal Rosenstock]

On Fri, 2006-02-10 at 12:43, Grant Grundler wrote:
> On Fri, Feb 10, 2006 at 11:05:34AM -0500, Hal Rosenstock wrote:
> > > Hi, Roland!
> > > One issue we have with IPoIB is that IPoIB may cache a remote node path
> > > for a long time. Remote LID may get changed e.g. if the SM is changed,
> > > and IPoIB might lose connectivity.
> 
> I wonder if this is why when I reload the IB drivers on one node
> I sometimes have to reload them on other nodes too. Otherwise
> ping over IPoIB doesn't work.
> 
> > The remote LID may get changed for other reasons too without an SM
> > change (SM merge of 2 separate subnets). How can this be handled ?
> 
> Isn't this just another case of the SM changing for one of the subnets?

For the one whose SM loses but there still could be LID changes in the
existing subnet depending on the SM policy.

-- Hal

> grant