[openib-general] Dump and load routes with opensm?

[Greg Johnson]

On Thu, May 04, 2006 at 01:08:54PM -0400, Hal Rosenstock wrote:
> On Thu, 2006-05-04 at 12:55, Greg Johnson wrote:
> > I actually want routes.  
> 
> OpenSM calculates the unicast and multicast routes and populates the
> (unicast and multicast) forwarding tables. 
> 
> > I have queried them with ibtraceroute and ibroute, 
> 
> ibroute dumps the forwarding tables and ibtracert traces the path from a
> source to a destination so these are displaying how OpenSM has setup the
> fabric which is a function of the routing algorithm chosen and the
> physical topology (which may be dynamic).
> 
> > but we need routes for the whole fabric. 
> 
> Unicast, multicast, or both ? Just to look at ? There is no way to load
> these into OpenSM.

At this point we are only interested in unicast routes.  We would like
to be able to dump and load the forwarding tables.  We have a single
288 port switch chassis for our cluster.  We would like to be able to
load routes for two reasons.  One is to be able to do testing with a
fixed set of routes.  The other is that we would like to program our own
routes into the switches.

> > BTW, if you call ibtraceroute thousands of times it stops working.
> 
> Any more info on how it fails ? What version of diags, the management
> libraries, and the kernel (including OpenIB svn if that is being used)
> are you using ?

I'll have to make it fail again and get back to you.


Thanks,
Greg