That depends on the switch you're using. Unless you're using the POX datapath, you should probably ask on the switch's site/mailing-list/other-support-mechanism. For example, if you're using Open vSwitch, it has its own mailing lists.
-- Murphy On Feb 2, 2015, at 1:50 AM, AMER <amer7...@hotmail.com> wrote: > Hello, > > Dear Murphy > Yes I am trying to increase the VLAN tag to be 6 bytes. I have modified the > vlan code on vlan.py under pox directory > how can i do the same for the switch, I just need to increase the size > nothing else :-). > > Regards, > > Eng Amer Alghadhban > COE > SANS-GCFW > CEH, SCNP, CCNA > > > Subject: Re: Error in openflow > From: murphy.mccau...@gmail.com > Date: Sun, 1 Feb 2015 12:45:40 -0800 > CC: pox-dev@lists.noxrepo.org > To: amer7...@hotmail.com > > Are you saying that you're altering the OpenFlow protocol so that it can > specify VLAN tags larger than two bytes? And modifying a switch so that it > can match and probably insert and remove these larger VLAN tags? (If so, I'd > have thought that using VXLAN would be an easier way or that using an > extension would be cleaner, but that's another issue.) > > So you're getting an error from the switch saying that it thinks you've sent > it a flow-mod with the emergency flag *and* timeouts set, which isn't > allowed. Assuming that you're not trying to set an emergency flow, the most > likely explanation here is that the flow-mod is either being constructed > wrong or parsed wrong. If you're modifying the match structure to > accommodate larger VLAN tags, make sure you've modified it the same way on > both the switch and controller. > > -- Murphy > > On Feb 1, 2015, at 3:35 AM, AMER <amer7...@hotmail.com> wrote: > > Dear all > > I am using POX carp > I am receiving this error > > [00-00-00-00-00-02 143] Error: header: > [00-00-00-00-00-02 143] Error: version: 1 > [00-00-00-00-00-02 143] Error: type: 1 (OFPT_ERROR) > [00-00-00-00-00-02 143] Error: length: 76 > [00-00-00-00-00-02 143] Error: xid: 719 > [00-00-00-00-00-02 143] Error: type: OFPET_FLOW_MOD_FAILED (3) > [00-00-00-00-00-02 143] Error: code: OFPFMFC_BAD_EMERG_TIMEOUT (3) > [00-00-00-00-00-02 143] Error: datalen: 64 > [00-00-00-00-00-02 143] Error: 0000: 01 0e 00 48 00 00 02 cf 00 10 00 1f 00 > 00 00 00 |...H............| > [00-00-00-00-00-02 143] Error: 0010: 00 00 00 00 00 00 00 00 00 00 4e 6f 6e > 65 00 00 |..........None..| > [00-00-00-00-00-02 143] Error: 0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 |................| > [00-00-00-00-00-02 143] Error: 0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 03 00 00 |................| > INFO:openflow.of_01:[00-00-00-00-00-01 144] closed > INFO:openflow.of_01:[00-00-00-00-00-02 143] closed > > I am trying to extend the vlan header size, sorted almost all errors but > finally I am facing this and I do not understand it. > > Best regards, > Amer > > Eng Amer Alghadhban > COE > SANS-GCFW > CEH, SCNP, CCNA
