On Thu, Jan 16, 2014 at 09:38:30AM -0500, James Nguyen wrote: > > > >> (2) Section 3.3 Configuration Management > >> > >> Session-oriented configuration protocol may be expensive for managing > >> a large number of similar devices. In a case when common redundant > >> configurations is issued, reliable multicast with negative acknowledgement > >> (e.g. Negative ACKnowledgement (NACK)-Oriented Reliable Multicast (NORM)) > >> would work best. I suggest to add a reliable transport requirement in this > >> section. Moreover, a common data model would be needed. > >> > >> Stateless configuration update solution would also work well for > >> constrained networks. > > > > My assumption is that reliable multicast protocols are not simple and > > bring their own can of worms. Can you point to prototype systems that > > do successfully use reliable multicast to configure constrained > > devices? > > I certainly can list a couple of scenarios: > > I assume that military radios could be categorized as constrained > devices as they're often on the move and operated in unreliable > networks with lossy links and/or highly disrupted environment. > Military radios or military devices seem to fit the definitions that > are listed in Section 1.6. > > (1) In military theater or emergency disaster incident, a group of > soldiers or a group of search-and-rescuers need to switch frequency of > their radios to join other group's communication network. > > (2) In battlefield, soldiers' need to be zero-outed (of > configurations) to prevent these radios/comms devices to fall in > enemies' hands.
Luckily, I am not familiar with any of this. But my concern remains and in such scenarios, I would have serious trouble to define what 'reliable' means given that the group membership is open ended. > > Can you also elaborate what "stateless configuration update solution" > > means to you? > > I meant stateless configuration management. > And that means what to you? What is 'stateless'? /js -- Juergen Schoenwaelder Jacobs University Bremen gGmbH Phone: +49 421 200 3587 Campus Ring 1, 28759 Bremen, Germany Fax: +49 421 200 3103 <http://www.jacobs-university.de/> _______________________________________________ OPSAWG mailing list [email protected] https://www.ietf.org/mailman/listinfo/opsawg
