Patch port is like a wormhole, which transfers packets between bridges transparently. There is no datapath port for it. In your case, the packet should be forwarded to br-tun, but it seems you have no tunnel port (vxlan, geneve, stt, etc.) in br-tun, so you didn't see any output on that bridge. You might wonder why packet is not flooded to the internal port br-tun. I assume you use devstack, br-tun works in secure mode and there is no "NORMAL" flow (check ovs-ofctl dump-flows br-tun), so packet is not flooded there.
Best regards, Han On Tue, Sep 15, 2015 at 12:33 AM, openvswitcher <openvswitc...@163.com> wrote: > I want to ask one question about patch port and flooding. > > > The topology used is below: > > > namespace 1(tap516ed44b-29) --br-int--br-tun > > > I ping an unreachable address 192.168.10.20 from 192.168.10.2(namespace port > tap516ed44b-29),so the arp flow is installed in kernel. > But the action is "push_vlan(vid=2,pcp=0),1,pop_vlan,11,13". > > > I wonder why the patch port is not flooded to? > > > The details is bellow: > > > # ovs-dpctl dump-flows > skb_priority(0),in_port(9),eth(src=fa:16:3e:49:a8:9b,dst=ff:ff:ff:ff:ff:ff),eth_type(0x0806),arp(sip=192.168.10.2/255.255.255.255,tip=192.168.10.20/255.255.255.255,op=1/0xff,sha=fa:16:3e:49:a8:9b/00:00:00:00:00:00,tha=00:00:00:00:00:00/00:00:00:00:00:00), > packets:1970, bytes:82740, used:0.676s, > actions:push_vlan(vid=2,pcp=0),1,pop_vlan,11,13 > # ovs-appctl dpif/show > system@ovs-system: > (...skip...) > br-ext: hit:103 missed:57 > br-ext 65534/2: (internal) > fg-d77a2710-06 9/15: (internal) > qg-f74784b2-af 1/8: (internal) > br-int: hit:299017 missed:223582 > br-int 65534/1: (internal) > patch-tun 1/none: (patch: peer=patch-int) > qr-1be06b4b-0f 3/6: (internal) > qr-1f535556-59 4/7: (internal) > qr-20f37e1a-13 9/13: (internal) > qr-b9961ff6-d8 11/14: (internal) > qvo2f01594b-3d 7/11: (system) > qvo86dc14d8-61 8/12: (system) > tap516ed44b-29 5/9: (internal) > tap765e9497-63 6/10: (internal) > tap9d8f5064-21 2/5: (internal) > br-mgmt0: hit:0 missed:0 > br-mgmt0 65534/3: (internal) > phy-br-mgmt0 1/none: (patch: peer=int-br-mgmt0) > br-tun: hit:4 missed:3 > br-tun 65534/4: (internal) > patch-int 1/none: (patch: peer=patch-tun) > > > Is the patch port special? > > _______________________________________________ > dev mailing list > dev@openvswitch.org > http://openvswitch.org/mailman/listinfo/dev _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
