[keeping cross posting b/c it re-enforces my concerns about artificially dividing our mailing lists]
Hi Yiannis, First, I would look at wireshark to figure out the exact sequence of messages. But second, nox sends a ofp_vendor message and gives the disconnect message similar to what you're seeing if it does not get a reply (either the right ofp_vendor reply or an ofp_error with unsupported). Did you somehow break this sequence? - Rob . On Mon, Feb 14, 2011 at 7:16 PM, Yiannis Yiakoumis <[email protected]> wrote: > Hi, > Sorry for the cross-posting, not sure what's the most appropriate list. > i use OpenFlow 1.0 (reference impl) and nox-zaku. By default, both > ofprotocol and nox will start with a keep-alive of 15 secs. After a few > minutes of inactivity, the switch side disconnects, sending a tcp request > and complaining as follows : > Feb 15 02:02:04 172.24.74.231 sysinit: Feb 15 > 02:02:04|02563|rconn|ERR|tcp:openflow3.stanford.edu:6633: no response to > inactivity probe after 15 seconds, disconnecting > I changed nox keep-alive to 10 secs and ofprotocol to 20. I don't see any > resets at that point, but I am still confused with the switch sending > ECHO_REQUESTs. I was expecting that since it receives requests from nox, it > will consider the connection ACTIVE, thus not sending any keep-alives on its > own. Instead it keeps sending "echo requests" every 20 secs. What's the > intended behavior of rconn/vconn here? I suspect that this is related with > the periodic disconnects I mentioned earlier. > Note that this happens only when there is no traffic in the channel (aka no > LLDP or any other packets). > Srini, is this related with what we've seen with the > circuit-aggregation/flowvisor setup? > Thanks, > Yiannis > _______________________________________________ > openflow-discuss mailing list > [email protected] > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > > _______________________________________________ nox-dev mailing list [email protected] http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
