Hello all, I am currently trying to use sflow in an SDN environment (mininet). I have successfully set up the sflow agent in the ovs bridge that is created by mininet.
My main problem is this that the rules installed by my openflow controller specify some ports (e.g. port 1, port 2). However the ports i see in sflow samples are not the same ones. Each time mininet topology is re-estabilished, ingress and egress ports in the sflow sample vary. This is a sample from an ICMP Reply from host1 to host2. *sflow sample:* startSample ---------------------- sampleType_tag 0:1 sampleType FLOWSAMPLE sampleSequenceNo 20 sourceId 2:1000 meanSkipCount 1 samplePool 20 dropEvents 0 *inputPort 675outputPort 677* flowBlock_tag 0:1001 extendedType SWITCH in_vlan 0 in_priority 0 out_vlan 0 out_priority 0 flowBlock_tag 0:1 flowSampleType HEADER headerProtocol 1 sampledPacketSize 102 strippedBytes 4 headerLen 98 headerBytes 00-00-00-00-00-02-00-00-00-00-00-01-08-00-45-00-00-54-CC-BC-00-00-40-01-99-EA-0A-00-00-01-0A-00-00-02-00-00-36-5F-64-2C-00-01-D4-CE-54-55-00-00-00-00-6F-7C-0E-00-00-00-00-00-10-11-12-13-14-15-16-17-18-19-1A-1B-1C-1D-1E-1F-20-21-22-23-24-25-26-27-28-29-2A-2B-2C-2D-2E-2F-30-31-32-33-34-35-36-37 dstMAC 000000000002 srcMAC 000000000001 IPSize 84 ip.tot_len 84 srcIP 10.0.0.1 dstIP 10.0.0.2 IPProtocol 1 IPTOS 0 IPTTL 64 ICMPType 0 ICMPCode 0 endSample ---------------------- *ovs-dpctl dump-flows <DPath>* *in_port(2),* eth(src=00:00:00:00:00:01,dst=00:00:00:00:00:02), eth_type(0x0800), ipv4(src=10.0.0.1,dst=10.0.0.2,proto=1,tos=0,ttl=64,frag=no), icmp(type=0,code=0), packets:0, bytes:0, used:never, *actions:sample(sample=100.0%,actions(userspace(pid=4294962193,sFlow(vid=0,pcp=0,output=677)))), 3* *ovs-ofctl dump-flows s1* cookie=0x0, duration=1.939s, table=0, n_packets=1, n_bytes=98, idle_timeout=10, hard_timeout=30, idle_age=1, priority=65535,icmp, *in_port=1*,vlan_tci=0x0000,dl_src=00:00:00:00:00:01,dl_dst=00:00:00:00:00:02,nw_src=10.0.0.1,nw_dst=10.0.0.2,nw_tos=0,icmp_type=0,icmp_code=0 *actions=output:2* Is there any way to map the ports in the sflow sample, to the ports understood by the openflow controller, and virtual topology? My aim is to find something like the following mapping: sflow -> openflow "675" -> "port 1" "677" -> "port 2"
_______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
