[openib-general] Re: IPoIB and lid change

[Michael S. Tsirkin]

Quoting r. Hal Rosenstock <halr at voltaire.com>:
> Subject: Re: IPoIB and lid change
> 
> On Wed, 2006-02-08 at 15:14, Michael S. Tsirkin 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.
> 
> 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 ?

Change the SM to trigger SM lid change for both subnets?

> > One simple way to address this would be to have a list of all
> > address handles per net device and kill them on an SM change event.
> > 
> > What do you think?
> 

-- 
Michael S. Tsirkin
Staff Engineer, Mellanox Technologies