Hi Kyriakos, Yes, with port stats request, NEC switch also send back one message per port. Actually, NEC switch uses flags (in ofp_stats_reply struct) to indicate if there is a subsequent message to statistics reply message. When there is a subsequent message to Statistics Reply message, "1" is set to the flags of the Statics Reply message. Otherwise, "0" is set. Then, I am trying to modify monitoring component in nox-destiny branch to merge the messages and send them to nox-gui as one.
MinChi From: Kyriakos Zarifis [mailto:kyr.zari...@gmail.com] Sent: Tuesday, February 08, 2011 9:28 AM To: MinChi Tseng Cc: nox-dev@noxrepo.org Subject: Re: [nox-dev] nox-gui.py only shows one flow entry Hi MinChi, thanks for reporting this, we haven't actually had the chance to play around with a NEC switch and hadn't come across this so far. So just to clarify, when you request port stats, does the NEC switch send back one message per port? It looks like we should tweak it to multiplex the messages and parse/present them as one. On Mon, Feb 7, 2011 at 5:13 PM, MinChi Tseng <min...@cht.com.tw<mailto:min...@cht.com.tw>> wrote: Hi All, I am using nox-destiny branch and NEC IP8800 openflow-enabled switch. nox-gui.py only shows one flow entry information even though there are more than one flow entries on the openflow switch. And I found that it is because the openflow switch replied each flow statistics in individual packet. In other word, if there are two flow entries on the openflow switch, then two flow statistics reply messages are sent to NOX. Instead of putting two flow entries information in one flow statistics reply messages, it caused nox-gui.py always showing one flow entry result. Also, it is the same situation on port statistics request. nox-gui.py only shows one port information. The openflow spec doesn't restrict the openflow switch to put the whole statistics in ONE reply message. Any suggestion? Thanks, MinChi _______________________________________________ nox-dev mailing list nox-dev@noxrepo.org<mailto:nox-dev@noxrepo.org> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
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