Ah, I just saw that you resolved the error code/types. Did you try to wireshark the problematic flow_mod packets to verify that they look like what you want them to?
On Wed, Sep 22, 2010 at 12:01 AM, Kyriakos Zarifis <kyr.zari...@gmail.com>wrote: > Hi Guanyao, > > I haven't seen this error myself, but looking at the code it looks like it > is raised when a OFPT_ERROR is received from a switch, and looking at the > spec it looks like switches send this when the negotiated OF version is not > supported: > > "If the negotiated version is supported by the recipient, then the > connection pro- ceeds. Otherwise, the recipient must reply with an > OFPT_ERROR message with a type field of OFPET_HELLO_FAILED, a code field of > OFPHFC_COMPATIBLE, > and optionally an ASCII string explaining the situation in data, and then > terminate the connection." > > and type=3 seems to correspond to: "OFPET_FLOW_MOD_FAILED, /* Problem > modifying flow entry. */" > > and code=1 and code=3 seems to correspond to: > "OFPFMFC_OVERLAP, /* Attempted to add overlapping flow with CHECK_OVERLAP > flag set. */" > and > "OFPFMFC_BAD_EMERG_TIMEOUT /* Flow not added because of non-zero idle/hard > timeout*/" > respectively. > (pages 39-40 on the OF1.0 spec) > > These messages are pretty much self-explanatory, so check that you are > setting the relevant fields in order to do what you are trying to. > > Regards > > On Tue, Sep 21, 2010 at 11:36 PM, Guanyao Huang <gyhu...@ucdavis.edu>wrote: > >> Hi >> When setting up a flow entry (I am using mininet and NOX from HOTI >> tutorial), it says: >> >> 00065|openflow-event|ERR:received Openflow error packet from >> dpid=00000000000c: type=3, code=1, 80 bytes of data >> 00324|openflow-event|ERR:received Openflow error packet from >> dpid=000000000013: type=3, code=3, 80 bytes of data >> 00325|openflow-event|ERR:received Openflow error packet from >> dpid=00000000000c: type=3, code=3, 80 bytes of data >> 00326|openflow-event|ERR:received Openflow error packet from >> dpid=00000000000e: type=3, code=3, 88 bytes of data >> >> I am very confused. I never set CHECK_OVERLAP flag. Also, when will a flow >> entry become emergency? I didnt set it. Will it be set when a previous >> flow_mod fail? >> >> Is there any general/common reason for these two errors? >> >> Thanks. >> >> _______________________________________________ >> nox-dev mailing list >> nox-dev@noxrepo.org >> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >> >> >
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