Hello,
I encountered a problem that the DSCP_REMARK of Meter_Band_Type doesn’t work.
I was set the rate=1M and prec_level=3 in OFPMeterBandDscpRemark of bands and
test by iperfdup 2M src dst in Mininet .However,when I am parsing the packets
by wireshark,I found the dscp still keep the original value(ip_dscp=11).I can’t
see any change.
Partial code:
1:
bands = [parser.OFPMeterBandDscpRemark(rate=1000, burst_size=10, prec_level=3)]
meter_mod= parser.OFPMeterMod(datapath=datapath, command=ofproto.OFPMC_ADD,
flags=ofproto.OFPMF_KBPS, meter_id=1, bands=bands)
datapath.send_msg(meter_mod)
2:
actions= [parser.OFPActionOutput(out_port)]
match = parser.OFPMatch(in_port=in_port,
eth_dst=dst,ip_proto=17,eth_type=0x0800)
self.modify_meter(datapath, match,actions)
3:
def modify_meter(self, datapath, match,actions):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
inst = [parser.OFPInstructionMeter(meter_id=1),
parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,actions)]
mod = parser.OFPFlowMod(datapath=datapath, command=ofproto.OFPFC_ADD,
match=match, instructions=inst)
datapath.send_msg(mod)
Environment:Ubuntu 12.04+Ryu+Mininet+Ofsoftswitch13
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