Neutron: why OVS bridges (br-int, br-tun) are integrated in Icehouse?

asked 2014-08-10 22:17:13 -0500

thna gravatar image

updated 2014-08-10 22:19:55 -0500

Hello, I want to know that why bridges are integrated. So, I saw that GRE tunnels also established on br-int. I dumped flowtables on br-int like bellow. (It's summerized )


table=0, n_packets=29, n_bytes=2938, send_flow_rem in_port=3,dl_src=fa:16:3e:9e:dc:5f actions=set_field:0x3->tun_id,goto_table:10 table=0, n_packets=22, n_bytes=2308, send_flow_rem in_port=4,dl_src=fa:16:3e:41:24:1d actions=set_field:0x3->tun_id,goto_table:10 table=0, n_packets=70, n_bytes=8286, send_flow_rem tun_id=0x3,in_port=2 actions=goto_table:20 table=0, n_packets=0, n_bytes=0, send_flow_rem priority=8192,in_port=3 actions=drop table=0, n_packets=0, n_bytes=0, send_flow_rem priority=8192,in_port=4 actions=drop table=0, n_packets=415, n_bytes=37765, send_flow_rem dl_type=0x88cc actions=CONTROLLER:56

table=10, n_packets=0, n_bytes=0, send_flow_rem priority=8192,tun_id=0x3 actions=goto_table:20 table=10, n_packets=12, n_bytes=1860, send_flow_rem priority=16384,tun_id=0x3,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=output:2,goto_table:20 table=10, n_packets=24, n_bytes=2084, send_flow_rem tun_id=0x3,dl_dst=fa:16:3e:4c:a5:a9 actions=output:2,goto_table:20 table=10, n_packets=15, n_bytes=1302, send_flow_rem tun_id=0x3,dl_dst=fa:16:3e:e8:f6:86 actions=output:2,goto_table:20

table=20, n_packets=39, n_bytes=3386, send_flow_rem priority=8192,tun_id=0x3 actions=drop table=20, n_packets=21, n_bytes=2956, send_flow_rem priority=16384,tun_id=0x3,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=output:4,output:3 table=20, n_packets=18, n_bytes=2102, send_flow_rem tun_id=0x3,dl_dst=fa:16:3e:41:24:1d actions=output:4 table=20, n_packets=25, n_bytes=2732, send_flow_rem tun_id=0x3,dl_dst=fa:16:3e:9e:dc:5f actions=output:3


then, I assumed that by enabling OF1.3 protocol on OVS, they can use pipe-lining method by numbering Flowtable. but, I could not know that what is the advantage of integration of both bridges there are any performance improvement?

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