What about sequence numbers of TCP packets, is it possible to have a rule based on that field ?
2011/8/16 Zoltán Lajos Kis <[email protected]> > Well, this is also somewhat theoretical (as it has not been tested yet > :o)), but in [1] I implemented select groups as a weighted round-robin of > the buckets, without any hashing (around [2]). Anyway, if anyone is > interested in using this feature, I'll promise to fix any problems that > might arise. > > Regards, > Zoltan. > > [1] https://github.com/TrafficLab/of11softswitch > [2] > https://github.com/TrafficLab/of11softswitch/blob/master/udatapath/group_entry.c#L413 > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On > > Behalf Of Rob Sherwood > > Sent: Tuesday, August 16, 2011 5:15 PM > > To: Opeflow Mailing List > > Subject: [openflow-discuss] Splitting a flow > > > > On Tue, Aug 16, 2011 at 8:00 AM, Ben Pfaff <[email protected]> wrote: > > > > > > OpenFlow 1.0 doesn't support this behavior. I can't say > > for OpenFlow > > > 1.1, but I doubt it. > > > > [expanding a bit on what Zoltan just said] > > > > In theory, OpenFlow 1.1 has support for multi-path routing, > > where a single flow entry can be hashed across multiple > > ports, such that the flow is divided among the ports. > > > > The expected use case for this would be taking a flow entry > > that aggregated multiple tcp flows (e.g., "all traffic dst to > > 192.168.1.0/24") and using, for example, a hash on the > > packet's five tupple (src and dst ip + src and dst l4 port + > > ip protocol) to map individual tcp flows to a port, so > > depending on what you mean by "flow", this use case might be > > what you're asking. The other side of it is that openflow > > 1.1 does not define the hash function used, so in theory you > > could use this mechanism to map packets from the same tcp > > flow went out different ports. > > > > Unfortunately, all this is theoretical as I have not seen an deployed > > 1.1 implementations or implementations that implement this feature. > > If others know of some, I (as would this list :-) would be > > very interested in knowing about them. > > > > Hope that helps, > > > > - Rob > > . > > _______________________________________________ > > openflow-discuss mailing list > > [email protected] > > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > > > _______________________________________________ > openflow-discuss mailing list > [email protected] > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss >
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