hi Adria, unfortunately, yes, this problem has been seen before on the Pantou firmware. I don't know that anyone has determined a root cause.
there are a couple workarounds: 1) have your controller send periodic ECHO_REQUEST's to the switch, rather than wait for the switch to send them. for example, Pox has an openflow.keepalive module for this purpose: https://github.com/noxrepo/pox/blob/betta/pox/openflow/keepalive.py 2) I have found that adding: --verbose=vconn:file:dbg --log-file="/dev/null" to the ofprotocol command-line on the switch can help. however, this doesn't seem to work for everyone, so it might just be my own situation. :-) if you want more background, here are some previous threads: https://mailman.stanford.edu/pipermail/openflow-discuss/2012-October/003742.html https://mailman.stanford.edu/pipermail/openflow-discuss/2012-June/003372.html make sense? let me know if you have any questions. cheers, Andrew On Apr 19, 2013, at 10:05 AM, adria sole wrote: > I have done logread -f in telnet of the openwrt: > > result is: > ... > Jan 1 02:25:38 OpenWrt daemon.err ofprotocol: > 00657|rconn|ERR|tcp:192.168.1.20:6633: no response to inactivity probe after > 15 seconds, disconnecting > Jan 1 02:25:38 OpenWrt user.info sysinit: Jan 01 > 02:25:38|00657|rconn|ERR|tcp:192.168.1.20:6633: no response to inactivity > probe after 15 seconds, disconnecting > Jan 1 02:25:38 OpenWrt user.info sysinit: Jan 01 > 02:25:38|00658|rconn|INFO|tcp:192.168.1.20:6633: connection dropped > Jan 1 02:25:38 OpenWrt daemon.notice ofprotocol: > 00658|rconn|INFO|tcp:192.168.1.20:6633: connection dropped > Jan 1 02:25:40 OpenWrt user.info sysinit: Jan 01 > 02:25:39|00659|rconn|INFO|tcp:192.168.1.20:6633: connecting... > Jan 1 02:25:41 OpenWrt daemon.notice ofprotocol: > 00659|rconn|INFO|tcp:192.168.1.20:6633: connecting... > Jan 1 02:25:41 OpenWrt user.info sysinit: Jan 01 > 02:25:39|00660|rconn|INFO|tcp:192.168.1.20:6633: connected > Jan 1 02:25:41 OpenWrt daemon.notice ofprotocol: > 00660|rconn|INFO|tcp:192.168.1.20:6633: connected > ... > > > 2013/4/19 adria sole <adrias...@gmail.com> > Hi, I have some trouble with linksys wrt54gl, I have installed pantou > firmware > (http://www.openflow.org/wk/index.php/Pantou_:_OpenFlow_1.0_for_OpenWRT), and > nox (https://github.com/noxrepo/nox) branch verity. > > I have established openflow dialog, but after 2 request/reply messages my > router sends a TCP reset connection, and after that starts another time with > (SYN/SYN ACK) Hello;Features/Features Reply;2Request/Reply and another time > resets.. > > Does anyone know why? What can I do? > > Terminal: > ... > 01559|connection|WARN:rx error (Connection reset by peer) > 01560|connection_manager|WARN:connected: 192.168.1.20:6633<->192.168.1.1:58541 > 01561|openflow-datapath|DBG:recv 8 > 01562|openflow-datapath|DBG:received ofp_hello > 01563|openflow-datapath|WARN:Negotiated OpenFlow version 0x01 > 01564|openflow-datapath|DBG:sending ofp_hello > 01565|openflow-datapath|DBG:sending ofp_features_request > 01566|openflow-datapath|DBG:sending ofp_set_config > 01567|openflow-datapath|DBG:sent 8 remaining 0 20 > 01568|openflow-datapath|DBG:sent 20 remaining 0 0 > 01569|openflow-datapath|DBG:recv 224 > 01570|openflow-datapath|DBG:received ofp_features_reply > 01571|openflow-datapath|DBG:recv 8 > 01572|openflow-datapath|DBG:received ofp_echo_request > 01573|openflow-datapath|DBG:sending ofp_echo_reply > 01574|openflow-datapath|DBG:sent 8 remaining 0 0 > 01575|openflow-datapath|DBG:recv 8 > 01576|openflow-datapath|DBG:received ofp_echo_request > 01577|openflow-datapath|DBG:sending ofp_echo_reply > 01578|openflow-datapath|DBG:sent 8 remaining 0 0 > 01579|openflow-datapath|DBG:recv 8 > 01580|openflow-datapath|DBG:received ofp_echo_request > 01581|openflow-datapath|DBG:sending ofp_echo_reply > 01582|openflow-datapath|DBG:sent 8 remaining 0 0 > 01583|connection|WARN:rx error (Connection reset by peer) > 01584|connection_manager|WARN:connected: 192.168.1.20:6633<->192.168.1.1:58542 > 01585|openflow-datapath|DBG:recv 8 > 01586|openflow-datapath|DBG:received ofp_hello > 01587|openflow-datapath|WARN:Negotiated OpenFlow version 0x01 > 01588|openflow-datapath|DBG:sending ofp_hello > 01589|openflow-datapath|DBG:sending ofp_features_request > 01590|openflow-datapath|DBG:sending ofp_set_config > 01591|openflow-datapath|DBG:sent 8 remaining 0 20 > 01592|openflow-datapath|DBG:sent 20 remaining 0 0 > 01593|openflow-datapath|DBG:recv 224 > 01594|openflow-datapath|DBG:received ofp_features_reply > 01595|openflow-datapath|DBG:recv 8 > 01596|openflow-datapath|DBG:received ofp_echo_request > 01597|openflow-datapath|DBG:sending ofp_echo_reply > 01598|openflow-datapath|DBG:sent 8 remaining 0 0 > 01599|openflow-datapath|DBG:recv 8 > 01600|openflow-datapath|DBG:received ofp_echo_request > 01601|openflow-datapath|DBG:sending ofp_echo_reply > 01602|openflow-datapath|DBG:sent 8 remaining 0 0 > 01603|connection|WARN:rx error (Connection reset by peer) > ... > > > _______________________________________________ > openflow-discuss mailing list > openflow-discuss@lists.stanford.edu > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
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