I think NOX error message is also related to buffer_id. My switch is connected to a larger network and error message starts just after connecting to openflow controller. What can be the solution for this error message. Ahmed Bilal
On Thu, May 26, 2011 at 10:42 PM, Ben Pfaff <[email protected]> wrote: > On Thu, May 26, 2011 at 10:30:46PM +0500, ahmad numan wrote: > > I setup OVS on a machine (loaded kernel module, setup ovs-vswitchd and > > bridges etc.)and connect to an out-of-band NOX controller using > > ovs-openflowd. Controller got connected and switch is working correct > > (machines are pinging each other and netperf is also working correctly in > > openflow network). But i got error message after connecting with > controller > > such as "attempt to reuse the buffer" in ovs-openflowd terminal . NOX > > controller terminal is also showing error message "received openflow > error > > packets for dpid XXXXXXXXX type=1 code=7". Moreover when i tried to > manage > > the openflow traffic using "ovs-ofctl" i got error message "fail to > delete > > flow" in ovs-openflowd terminal. > > > > What do these error messages indicate ? is there any error in > configuration > > or something else? > > "Attempt to reuse buffer" means that the controller has tried to use > the same buffer_id in two or more OpenFlow requests. That doesn't > work, because the first use of a buffer_id causes the buffer to be > freed so that it can be reused for new packets coming in. > > I don't know why "ovs-ofctl" would report that error. Can you show > the whole ovs-ofctl output? Add "-vvconn" to the command line to get > more debugging output. >
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