On Fri, Oct 14, 2011 at 01:07:32PM -0700, Rob Sherwood wrote: > On Thu, Oct 13, 2011 at 4:28 PM, Ben Pfaff <[email protected]> wrote: > > > A non-stats request has 0 or 1 reply messages. ?A barrier can be used > > to verify that the request had 0 replies. > > > > A stats message has 1 or more reply message. ?Every message before the > > last one has the "more" flag set. ?The last message does not have the > > "more" flags set. > > While Ben is correct about what the protocol allows, my personal > belief is that the "one stats request -> multiple stats replies" > behavior should be discouraged and I would love to see it deprecated. > It was a pain to deal with in the flowvisor (extra logic for stats, > totally different from any other request type), I've heard lots of > anecdotes of it causing problems for people when a certain vendor's > implementation used this feature in a demo (which they've since > changed), and it's not clear what the benefit was given the cost from > a byte efficiency model.
OpenFlow messages are limited to 64 kB. The possibility for multiple replies overcomes this limit. What alternative do you propose? _______________________________________________ openflow-discuss mailing list [email protected] https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
