• ovs流表机制(四)用vxlan实现不同节点的vm通信


     

    10.10.16.82节点上

    [root@kunpeng82 devuser]# ip netns exec ns1 ping 192.168.10.22
    PING 192.168.10.22 (192.168.10.22) 56(84) bytes of data.
    ^C
    --- 192.168.10.22 ping statistics ---
    62 packets transmitted, 0 received, 100% packet loss, time 63406ms

    10.10.16.82节点上

    [root@kunpeng82 devuser]# tcpdump -i vxlan_sys_4789 -nnvv
    tcpdump: listening on vxlan_sys_4789, link-type EN10MB (Ethernet), capture size 262144 bytes
    13:05:18.307159 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:19.347186 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:20.387152 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:21.427150 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:22.467182 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:23.507152 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    13:05:24.547151 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    ^C
    7 packets captured
    7 packets received by filter
    0 packets dropped by kernel

    10.10.18.216节点上

    [root@host-10-10-18-216 ~]#  tcpdump -i vxlan_sys_4789 -nnvv
    tcpdump: listening on vxlan_sys_4789, link-type EN10MB (Ethernet), capture size 262144 bytes
    21:05:38.323613 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:39.363582 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:40.403603 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:41.443641 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:42.483594 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:43.523588 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:44.563627 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:45.603574 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:46.643548 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:47.683565 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:48.723543 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:49.763509 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    21:05:50.803536 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    ^C
     br-tun也抓不到报文,看来ovs和linux br还是有区别哦
    [root@host-10-10-18-216 ~]#  tcpdump -i br-tun -nnvv
    tcpdump: listening on br-tun, link-type EN10MB (Ethernet), capture size 262144 bytes
    ^C
    0 packets captured
    0 packets received by filter
    0 packets dropped by kernel
    原来是br-tun的流表被删除了,加上之后就可以了

    [root@host-10-10-18-216 ~]# ovs-ofctl dump-flows br-tun [root@host-10-10-18-216 ~]# ovs-ofctl dump-flows br-int cookie=0x0, duration=180739.746s, table=0, n_packets=200, n_bytes=14424, priority=0 actions=NORMAL [root@host-10-10-18-216 ~]# ovs-ofctl add-flow br-tun "priority=0,actions=NORMAL" [root@host-10-10-18-216 ~]# ovs-ofctl dump-flows br-tun cookie=0x0, duration=6.329s, table=0, n_packets=0, n_bytes=0, priority=0 actions=NORMAL

    可以ping通了

    [root@kunpeng82 devuser]# ip netns exec ns1 ping 192.168.10.22
    PING 192.168.10.22 (192.168.10.22) 56(84) bytes of data.
    64 bytes from 192.168.10.22: icmp_seq=1 ttl=64 time=1.65 ms
    64 bytes from 192.168.10.22: icmp_seq=2 ttl=64 time=0.266 ms
    64 bytes from 192.168.10.22: icmp_seq=3 ttl=64 time=0.734 ms
    64 bytes from 192.168.10.22: icmp_seq=4 ttl=64 time=0.295 ms
    ^C
    --- 192.168.10.22 ping statistics ---
    4 packets transmitted, 4 received, 0% packet loss, time 3118ms
    rtt min/avg/max/mdev = 0.266/0.736/1.650/0.559 ms
    [root@kunpeng82 devuser]#

    查看fdb表

    [root@host-10-10-18-216 ~]# ovs-appctl fdb/show br-int
     port  VLAN  MAC                Age
        2    22  7e:6c:77:3c:99:49  266
        1    22  2e:6b:9b:c1:f9:2d   46
        2    22  7e:53:2a:70:ac:48   46
        1    22  c2:31:85:2b:fa:02   11
    [root@host-10-10-18-216 ~]# ovs-appctl fdb/show br-tun
     port  VLAN  MAC                Age
        1    22  7e:6c:77:3c:99:49  273
        2    22  2e:6b:9b:c1:f9:2d   53
        1    22  7e:53:2a:70:ac:48   53
        2    22  c2:31:85:2b:fa:02   18

    把qvo1 改为tag=100

    先trace一下

    [root@host-10-10-18-216 ~]#  ovs-appctl ofproto/trace br-int  in_port=2,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,ip,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_proto=1 -generate
    Flow: icmp,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_tos=0,nw_ecn=0,nw_ttl=0,icmp_type=0,icmp_code=0
    
    bridge("br-int")
    ----------------
     0. priority 0
        NORMAL
         -> learned that 7e:53:2a:70:ac:48 is on port qvo1 in VLAN 100
         -> no learned MAC for destination, flooding
    
    bridge("br-tun")
    ----------------
     0. in_port=1, priority 1, cookie 0x79
        resubmit(,2)
     2. dl_dst=00:00:00:00:00:00/01:00:00:00:00:00, priority 0, cookie 0x79
        resubmit(,20)
    20. priority 0, cookie 0x79
        resubmit(,22)
    22. dl_vlan=100, priority 32768, cookie 0x79        // 未知单播      
        strip_vlan
        set_tunnel:0x20
        output:2
         -> output to kernel tunnel
    
    Final flow: unchanged
    Megaflow: recirc_id=0,eth,ip,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_ecn=0,nw_frag=no
    Datapath actions: push_vlan(vid=100,pcp=0),5,set(tunnel(tun_id=0x10,dst=10.10.16.82,ttl=64,tp_dst=4789,flags(df|key))),pop_vlan,3

    10.10.16.82节点抓包

    [root@kunpeng82 devuser]# tcpdump -i enahisic2i0 host 10.10.18.216  -nnvv
    tcpdump: listening on enahisic2i0, link-type EN10MB (Ethernet), capture size 262144 bytes
    04:51:14.852881 IP (tos 0x0, ttl 63, id 5163, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    04:51:15.892893 IP (tos 0x0, ttl 63, id 5256, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    04:51:16.933037 IP (tos 0x0, ttl 63, id 5274, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    04:51:17.972920 IP (tos 0x0, ttl 63, id 5307, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    04:51:19.012903 IP (tos 0x0, ttl 63, id 5333, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    04:51:20.053042 IP (tos 0x0, ttl 63, id 5353, offset 0, flags [DF], proto UDP (17), length 78)
        10.10.18.216.36528 > 10.10.16.82.4789: [no cksum] VXLAN, flags [I] (0x08), vni 16
    ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    ^C

    10.10.16.82节点trace

    [root@kunpeng82 devuser]#  ovs-appctl ofproto/trace br-tun  in_port=2,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,ip,tun_id=0x10,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_proto=1 -generate
    Flow: icmp,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_tos=0,nw_ecn=0,nw_ttl=0,icmp_type=0,icmp_code=0
    
    bridge("br-tun")
    ----------------
     0. in_port=2, priority 1, cookie 0x79
        resubmit(,4)
     4. priority 0, cookie 0x79
        drop
    
    Final flow: unchanged
    Megaflow: recirc_id=0,eth,ip,tun_id=0,in_port=2,nw_frag=no
    Datapath actions: drop

     原来把vxlan的id搞错了

    cookie=0x79, duration=485.164s, table=4, n_packets=0, n_bytes=0, priority=1,tun_id=0x20 actions=mod_vlan_vid:22,resubmit(,10)
     cookie=0x79, duration=485.158s, table=4, n_packets=94, n_bytes=3976, priority=0 actions=drop
          Port "vxlan-01"
                Interface "vxlan-01"
                    type: vxlan
                    options: {key="0x10", remote_ip="10.10.18.216"}
    [root@kunpeng82 devuser]# ovs-ofctl del-flows br-tun table=4 
    [root@kunpeng82 devuser]# ovs-ofctl dump-flows br-tun table=4

    [root@kunpeng82 devuser]# ovs-ofctl add-flow br-tun 'cookie=0x79, table=4, priority=1,tun_id=0x20 actions=mod_vlan_vid:22,resubmit(,10)'
    [root@kunpeng82 devuser]# ovs-ofctl add-flow br-tun 'cookie=0x79, table=4, priority=0 actions=drop'
    [root@kunpeng82 devuser]#

    
    

    [root@kunpeng82 devuser]# ovs-appctl ofproto/trace br-tun in_port=2,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,ip,tun_id=0X10,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_proto=1 -generate
    Flow: icmp,tun_id=0x20,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_tos=0,nw_ecn=0,nw_ttl=0,icmp_type=0,icmp_code=0

    
    

    bridge("br-tun")
    ----------------
    0. in_port=2, priority 1, cookie 0x79
    resubmit(,4)
    4. tun_id=0x10, priority 1, cookie 0x79
    mod_vlan_vid:22
    resubmit(,10)
    10. priority 1, cookie 0x79
    learn(table=20,hard_timeout=300,priority=1,cookie=0xa9eb8f9011f7e038,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[])
    -> table=20 vlan_tci=0x0016/0x0fff,dl_dst=7e:53:2a:70:ac:48 priority=1 cookie=0xa9eb8f9011f7e038 hard=300 actions=load:0->NXM_OF_VLAN_TCI[],load:0x10->NXM_NX_TUN_ID[],output:2
    output:1

    
    

    bridge("br-int")
    ----------------
    0. priority 0
    NORMAL
    -> learned that 7e:53:2a:70:ac:48 is on port patch-tun in VLAN 22
    -> no learned MAC for destination, flooding

    
    

    Final flow: icmp,tun_id=0x20,in_port=2,dl_vlan=22,dl_vlan_pcp=0,vlan_tci1=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_src=192.168.10.12,nw_dst=192.168.10.22,nw_tos=0,nw_ecn=0,nw_ttl=0,icmp_type=0,icmp_code=0
    Megaflow: recirc_id=0,eth,ip,tun_id=0x10,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=2e:6b:9b:c1:f9:2d,nw_frag=no
    Datapath actions: push_vlan(vid=22,pcp=0),2,pop_vlan,3

     

     但是ping还是不通

    [root@kunpeng82 devuser]# tcpdump -i vxlan_sys_4789 -eennvv
    tcpdump: listening on vxlan_sys_4789, link-type EN10MB (Ethernet), capture size 262144 bytes
    07:25:52.580006 7e:53:2a:70:ac:48 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    07:25:53.620035 7e:53:2a:70:ac:48 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    07:25:54.660151 7e:53:2a:70:ac:48 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    07:25:55.700060 7e:53:2a:70:ac:48 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    ^C
    4 packets captured
    4 packets received by filter
    0 packets dropped by kernel

    arp trace

    [root@kunpeng82 devuser]# ovs-appctl ofproto/trace br-tun in_port=2,dl_src=7e:53:2a:70:ac:48,dl_dst=ff:ff:ff:ff:ff:ff,arp,tun_id=0X20 -generate
    Flow: arp,tun_id=0x20,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=0.0.0.0,arp_tpa=0.0.0.0,arp_op=0,arp_sha=00:00:00:00:00:00,arp_tha=00:00:00:00:00:00
    
    bridge("br-tun")
    ----------------
     0. in_port=2, priority 1, cookie 0x79
        resubmit(,4)
     4. tun_id=0x20, priority 1, cookie 0x79
        mod_vlan_vid:22
        resubmit(,10)
    10. priority 1, cookie 0x79
        learn(table=20,hard_timeout=300,priority=1,cookie=0xa9eb8f9011f7e038,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[])
         -> table=20 vlan_tci=0x0016/0x0fff,dl_dst=7e:53:2a:70:ac:48 priority=1 cookie=0xa9eb8f9011f7e038 hard=300 actions=load:0->NXM_OF_VLAN_TCI[],load:0x20->NXM_NX_TUN_ID[],output:2
        output:1
    
    bridge("br-int")
    ----------------
     0. priority 0
        NORMAL
         -> learned that 7e:53:2a:70:ac:48 is on port patch-tun in VLAN 22
         -> no learned MAC for destination, flooding
    
    Final flow: arp,tun_id=0x20,in_port=2,dl_vlan=22,dl_vlan_pcp=0,vlan_tci1=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=ff:ff:ff:ff:ff:ff,arp_spa=0.0.0.0,arp_tpa=0.0.0.0,arp_op=0,arp_sha=00:00:00:00:00:00,arp_tha=00:00:00:00:00:00
    Megaflow: recirc_id=0,eth,arp,tun_id=0x20,in_port=2,vlan_tci=0x0000,dl_src=7e:53:2a:70:ac:48,dl_dst=ff:ff:ff:ff:ff:ff,arp_op=0
    Datapath actions: push_vlan(vid=22,pcp=0),2,pop_vlan,3

    10.10.18.216上查看下vxlan id,发现vxlan id是0x10

    [root@host-10-10-18-216 ~]# ovs-vsctl show 
    0608fdfe-ab3f-41d8-a439-b0dba68f452b
        Bridge br-tun
            fail_mode: secure
            Port br-tun
                Interface br-tun
                    type: internal
            Port patch-int
                Interface patch-int
                    type: patch
                    options: {peer=patch-tun}
            Port "vxlan-01"
                Interface "vxlan-01"
                    type: vxlan
                    options: {key="0x10", remote_ip="10.10.16.82"}


    [root@host-10-10-18-216 ~]# ovs-vsctl del-port vxlan-01
    [root@host-10-10-18-216 ~]# ovs-vsctl add-port br-tun vxlan-01 -- set interface vxlan-01 type=vxlan options:remote_ip=10.10.16.82 options:key=0x20 ofport_request=2

    最后可以ping通了
    [root@host-10-10-18-216 ~]# ip netns exec ns1 ping 192.168.10.12
    PING 192.168.10.12 (192.168.10.12) 56(84) bytes of data.
    64 bytes from 192.168.10.12: icmp_seq=1 ttl=64 time=2.05 ms
    64 bytes from 192.168.10.12: icmp_seq=2 ttl=64 time=0.293 ms
    ^C
    --- 192.168.10.12 ping statistics ---
    2 packets transmitted, 2 received, 0% packet loss, time 1001ms
    rtt min/avg/max/mdev = 0.293/1.174/2.056/0.882 ms
    [root@host-10-10-18-216 ~]#

    查看table 20

    [root@kunpeng82 devuser]# ovs-ofctl dump-flows br-tun table=20
     cookie=0xa9eb8f9011f7e038, duration=7.494s, table=20, n_packets=4, n_bytes=280, hard_timeout=300, priority=1,vlan_tci=0x0016/0x0fff,dl_dst=7e:53:2a:70:ac:48 actions=load:0->NXM_OF_VLAN_TCI[],load:0x20->NXM_NX_TUN_ID[],output:"vxlan-01"
     cookie=0x79, duration=6670.529s, table=20, n_packets=0, n_bytes=0, priority=0 actions=resubmit(,22)
    [root@kunpeng82 devuser]# 


    [root@host-10-10-18-216 ~]# ovs-ofctl dump-flows br-tun table=20
    cookie=0xa9eb8f9011f7e038, duration=24.363s, table=20, n_packets=3, n_bytes=182, hard_timeout=300, priority=1,vlan_tci=0x0064/0x0fff(本地vlan tag),dl_dst=2e:6b:9b:c1:f9:2d(目的mac) actions=load:0->NXM_OF_VLAN_TCI[],load:0x20->NXM_NX_TUN_ID[],output:"vxlan-01"
    cookie=0x79, duration=12530.579s, table=20, n_packets=12, n_bytes=1008, priority=0 actions=resubmit(,22)
    [root@host-10-10-18-216 ~]#

     

    查看neigh

    [root@host-10-10-18-216 ~]# ip netns exec ns1  ip n
    192.168.10.12 dev tap0  FAILED
    192.168.1.200 dev tap0 lladdr 8a:6a:5f:bb:b0:9a STALE
    192.168.10.12 dev veth1 lladdr 2e:6b:9b:c1:f9:2d STALE
    114.114.114.114 dev tap0  FAILED
    [root@host-10-10-18-216 ~]# 
    bridge fdb show
    [root@host-10-10-18-216 ~]# bridge fdb show
    01:00:5e:00:00:01 dev eth0 self permanent
    33:33:00:00:00:01 dev eth0 self permanent
    33:33:ff:0a:1e:35 dev eth0 self permanent
    01:00:5e:00:00:fb dev eth0 self permanent
    33:33:00:00:00:01 dev tap0_br self permanent
    01:00:5e:00:00:01 dev tap0_br self permanent
    33:33:ff:c3:35:36 dev tap0_br self permanent
    33:33:00:00:00:01 dev ovs-system self permanent
    33:33:00:00:00:01 dev vswitch0 self permanent
    01:00:5e:00:00:01 dev vswitch0 self permanent
    33:33:ff:cc:11:49 dev vswitch0 self permanent
    01:00:5e:00:00:01 dev br-tun self permanent
    33:33:00:00:00:01 dev br-tun self permanent
    33:33:ff:3e:ff:41 dev br-tun self permanent
    33:33:00:00:00:01 dev br-int self permanent
    01:00:5e:00:00:01 dev br-int self permanent
    33:33:ff:fb:40:48 dev br-int self permanent
    33:33:00:00:00:01 dev qbr1 self permanent
    01:00:5e:00:00:01 dev qbr1 self permanent
    33:33:ff:76:5e:c3 dev qbr1 self permanent
    7e:6c:77:3c:99:49 dev qvb1 vlan 1 master qbr1 permanent
    7e:6c:77:3c:99:49 dev qvb1 master qbr1 permanent
    33:33:00:00:00:01 dev qvb1 self permanent
    01:00:5e:00:00:01 dev qvb1 self permanent
    33:33:ff:3c:99:49 dev qvb1 self permanent
    33:33:00:00:00:01 dev qvo1 self permanent
    01:00:5e:00:00:01 dev qvo1 self permanent
    33:33:ff:5e:18:a1 dev qvo1 self permanent
    fa:56:81:d9:2c:e2 dev veth1_br master qbr1 permanent
    fa:56:81:d9:2c:e2 dev veth1_br vlan 1 master qbr1 permanent
    33:33:00:00:00:01 dev veth1_br self permanent
    01:00:5e:00:00:01 dev veth1_br self permanent
    33:33:ff:d9:2c:e2 dev veth1_br self permanent
    ovs-appctl fdb/show
    [root@host-10-10-18-216 ~]#  ovs-appctl fdb/show  br-int
     port  VLAN  MAC                Age
        2   100  7e:6c:77:3c:99:49  145
        1   100  2e:6b:9b:c1:f9:2d    5
        2   100  7e:53:2a:70:ac:48    5
    [root@host-10-10-18-216 ~]#  ovs-appctl fdb/show  br-tun
     port  VLAN  MAC                Age                       -----------------竟然是空的哦
    [root@host-10-10-18-216 ~]# 
    ovs-appctl fdb/show
    [root@kunpeng82 devuser]# ovs-appctl fdb/show  br-tun
     port  VLAN  MAC                Age 
    [root@kunpeng82 devuser]# ovs-appctl fdb/show  br-int
     port  VLAN  MAC                Age
        1    22  7e:6c:77:3c:99:49  191
        1    22  7e:53:2a:70:ac:48   50
        2    22  2e:6b:9b:c1:f9:2d   50
    [root@kunpeng82 devuser]# 
    

      

     现在删除192.168.10.12的neighbor项,看10.10.16.82能不能收到arp广播

    [root@host-10-10-18-216 ~]# ip netns exec ns1 ip n del 192.168.10.12 dev  veth1 lladdr 2e:6b:9b:c1:f9:2d
    [root@host-10-10-18-216 ~]# ip netns exec ns1 ping 192.168.10.12
    PING 192.168.10.12 (192.168.10.12) 56(84) bytes of data.
    64 bytes from 192.168.10.12: icmp_seq=1 ttl=64 time=1.55 ms
    64 bytes from 192.168.10.12: icmp_seq=2 ttl=64 time=0.290 ms
    64 bytes from 192.168.10.12: icmp_seq=3 ttl=64 time=0.273 ms
    ^C
    --- 192.168.10.12 ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 2008ms
    rtt min/avg/max/mdev = 0.273/0.704/1.550/0.598 ms
    [root@host-10-10-18-216 ~]#
    [root@kunpeng82 devuser]# ip netns exec ns1 tcpdump -i veth1 arp -eennvv
    tcpdump: listening on veth1, link-type EN10MB (Ethernet), capture size 262144 bytes
    08:19:09.015788 7e:53:2a:70:ac:48 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.12 tell 192.168.10.22, length 28
    08:19:09.015796 2e:6b:9b:c1:f9:2d > 7e:53:2a:70:ac:48, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Reply 192.168.10.12 is-at 2e:6b:9b:c1:f9:2d, length 28
    08:19:14.067128 2e:6b:9b:c1:f9:2d > 7e:53:2a:70:ac:48, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.10.22 tell 192.168.10.12, length 28
    08:19:14.067659 7e:53:2a:70:ac:48 > 2e:6b:9b:c1:f9:2d, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Reply 192.168.10.22 is-at 7e:53:2a:70:ac:48, length 28
    ^C
    4 packets captured
    4 packets received by filter
    0 packets dropped by kernel
    [root@kunpeng82 devuser]# 

    10.10.16.82节点配置---流表

     ## patch-int port =1 
     ## vxlan-01 port =2
     ##================== table 0
     #处理patch-int包,虚机出流量
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0,  priority=1,in_port=1 actions=resubmit(,2)'
     #处理vxlan包,从vxlan tunnel进入的数据包
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0,  priority=1,in_port=2 actions=resubmit(,4)'
     #默认规则
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0, priority=0 actions=drop'
    #处理patch-int包,虚机出流量 table 0 --> resubmit 2
    
    #===========table 2
     #单播包
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=2, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,20)'
    
     #广播包
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=2, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,22)'
    #=================== table 3
    ovs-ofctl add-flow br-tun 'cookie=0x79,  table=3, priority=0 actions=drop'
    #处理vxlan包,从vxlan tunnel进入的数据包会resubmit(4)
    #vxlan id =0x20, 10.10.16.82节点 vlan id =22
    #=================== table 4
    // 把vxlan映射到对应的vlan ovs-ofctl add-flow br-tun 'cookie=0x79, table=4, priority=1,tun_id=0x20 actions=mod_vlan_vid:22,resubmit(,10)' ovs-ofctl add-flow br-tun 'cookie=0x79, table=4, priority=0 actions=drop' #=================== table 6 ovs-ofctl add-flow br-tun 'cookie=0x79, table=6, priority=0 actions=drop' #处理vxlan包,从vxlan tunnel进入的数据包会resubmit(4) # table 4 mod_vlan_id --> resubmit(10) #==================== table 10 ovs-ofctl add-flow br-tun 'cookie=0x79, table=10, priority=1 actions=learn(table=20,hard_timeout=300,priority=1,cookie=0xa9eb8f9011f7e038,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:1' ## table 10 learn --> table 20 saves learning resuslt #处理patch-int包,虚机出流量 table 0 --> resubmit 2 # table 2 unicast --> table 20 ##===================== table 20 没有match则跳转到 table 22 # table 20 ovs-ofctl add-flow br-tun 'cookie=0x79, table=20, priority=0 actions=resubmit(,22)' #处理patch-int包,虚机出流量 vlan tag=22, table 0 --> resubmit 2 # table 2 broadcast --> table 22 ##======================== table 22 flood
    //把vlan 映射到对应的vxlan,如果没有strip_vlan则vxlan承载的mac报文包含vlan头 ovs
    -ofctl add-flow br-tun 'cookie=0x79, table=22, dl_vlan=22 actions=strip_vlan,set_tunnel:0x20,output:2' ovs-ofctl add-flow br-tun 'cookie=0x79, table=22,priority=0 actions=drop'

     

    设置vxlan端口为trunk类型并配置可以转发的vlan
     ovs-vsctl set Port vxlan trunks=100,200
     

    10.10.16.82节点配置--网络

    #/bin/bash
    set -e
    #添加ovs网桥: br-tun/br-int
    #ovs-vsctl add-br br-tun
    #ovs-vsctl add-br br-int
    #ovs-vsctl set-fail-mode br-tun secure
    #ovs-vsctl set-fail-mode br-int standalone
    #添加patch口,连接br-tun,br-int
    #ovs-vsctl add-port br-tun patch-int -- set interface patch-int type=patch -- set interface patch-int options:peer=patch-tun
    #ovs-vsctl add-port br-int patch-tun -- set interface patch-tun type=patch -- set interface patch-tun options:peer=patch-int
    #添加linux bridge
    #brctl addbr qbr1
    #ip link set qbr1 up
    #添加veth口,连接br-int,qbr1
    #ip link add name qvo1 type veth peer name qvb1
    #ip link set qvo1 up
    #ip link set qvb1 up
    #ovs-vsctl add-port br-int qvo1
    #brctl addif qbr1 qvb1
    ##设置qvo1的vlan tag
    #ovs-vsctl set port qvo1 tag=22
    #添加namespace:
    #ip netns add ns1
    #ip link add name veth1 type veth peer name veth1_br
    #ip link set dev veth1 netns ns1
    #brctl addif qbr1 veth1_br
    #ip link set veth1_br up
    #ip netns exec ns1 ip link set veth1 up
    #ip netns exec ns1 ip addr add 192.168.10.12/24 dev veth1
    ovs-vsctl del-port vxlan-01
    ovs-vsctl add-port br-tun vxlan-01 -- set interface vxlan-01 type=vxlan options:remote_ip=10.10.18.216 options:key=0x20

    10.10.18.216节点配置--流表

     ## patch-int port =1 
     ## vxlan-01 port =2
     ##================== table 0
     #处理patch-int包,虚机出流量
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0,  priority=1,in_port=1 actions=resubmit(,2)'
     #处理vxlan包,从vxlan tunnel进入的数据包
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0,  priority=1,in_port=2 actions=resubmit(,4)'
     #默认规则
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=0, priority=0 actions=drop'
    #处理patch-int包,虚机出流量 table 0 --> resubmit 2
    
    #===========table 2
     #单播包
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=2, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,20)'
    
     #广播包
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=2, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,22)'
    #=================== table 3
    ovs-ofctl add-flow br-tun 'cookie=0x79,  table=3, priority=0 actions=drop'
    #处理vxlan包,从vxlan tunnel进入的数据包会resubmit(4)
    #vxlan id =0x20, 10.10.18.216节点 vlan id =100
    #=================== table 4
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=4,  priority=1,tun_id=0x20 actions=mod_vlan_vid:100,resubmit(,10)'
     ovs-ofctl add-flow br-tun 'cookie=0x79,  table=4,  priority=0 actions=drop'
    
    #=================== table 6
    ovs-ofctl add-flow br-tun 'cookie=0x79,  table=6, priority=0 actions=drop'
    
    #处理vxlan包,从vxlan tunnel进入的数据包会resubmit(4)
    # table 4 mod_vlan_id --> resubmit(10)
    #==================== table 10
    ovs-ofctl add-flow br-tun 'cookie=0x79, table=10, priority=1 actions=learn(table=20,hard_timeout=300,priority=1,cookie=0xa9eb8f9011f7e038,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:1'
    
    ## table 10 learn --> table 20 saves learning  resuslt 
    #处理patch-int包,虚机出流量 table 0 --> resubmit 2
    # table 2 unicast --> table 20
    ##===================== table 20 没有match(uncast)则跳转到 table 22
    # table 20
    ovs-ofctl add-flow br-tun 'cookie=0x79, table=20, priority=0 actions=resubmit(,22)'
    
    #处理patch-int包,虚机出流量 table 0 --> resubmit 2
    # table 2 broadcast --> table 22
    ##========================  table 22  flood
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=22, dl_vlan=100 actions=strip_vlan,set_tunnel:0x20,output:2'
     ovs-ofctl add-flow br-tun 'cookie=0x79, table=22,priority=0 actions=drop'

    10.10.18.216节点配置--网络

    /bin/bash
    et -e
    添加ovs网桥: br-tun/br-int
    ovs-vsctl add-br br-tun
    ovs-vsctl add-br br-int
    ovs-vsctl set-fail-mode br-tun secure
    ovs-vsctl set-fail-mode br-int standalone
    添加patch口,连接br-tun,br-int
    ovs-vsctl add-port br-tun patch-int -- set interface patch-int type=patch -- set interface patch-int options:peer=patch-tun
    ovs-vsctl add-port br-int patch-tun -- set interface patch-tun type=patch -- set interface patch-tun options:peer=patch-int
    添加linux bridge
    brctl addbr qbr1
    ip link set qbr1 up
    添加veth口,连接br-int,qbr1
    ip link add name qvo1 type veth peer name qvb1
    ip link set qvo1 up
    ip link set qvb1 up
    ovs-vsctl add-port br-int qvo1
    brctl addif qbr1 qvb1
    #设置qvo1的vlan tag
    ovs-vsctl set port qvo1 tag=100
    添加namespace:
    ip netns add ns1
    ip link add name veth1 type veth peer name veth1_br
    ip link set dev veth1 netns ns1
    brctl addif qbr1 veth1_br
    ip link set veth1_br up
    ip netns exec ns1 ip link set veth1 up
    ip netns exec ns1 ip addr add 192.168.10.22/24 dev veth1
    
    
     ovs-vsctl del-port vxlan-01
    ovs-vsctl add-port br-tun vxlan-01 -- set interface vxlan-01 type=vxlan options:remote_ip=10.10.16.82 options:key=0x20  ofport_request=2
    # ovs-vsctl del-port vxlan-01
    [root@host-10-10-18-216 ~]# ovs-vsctl dump-flows br-tun
    ovs-vsctl: unknown command 'dump-flows'; use --help for help
    [root@host-10-10-18-216 ~]# ovs-ofctl dump-flows br-tun
     cookie=0x79, duration=31570.269s, table=0, n_packets=1916, n_bytes=82768, priority=1,in_port="patch-int" actions=resubmit(,2)
     cookie=0x79, duration=31570.265s, table=0, n_packets=427, n_bytes=19278, priority=1,in_port="vxlan-01" actions=resubmit(,4)
     cookie=0x79, duration=31570.261s, table=0, n_packets=9, n_bytes=630, priority=0 actions=drop
     cookie=0x79, duration=31570.256s, table=2, n_packets=34, n_bytes=2772, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,20)
     cookie=0x79, duration=31570.251s, table=2, n_packets=1882, n_bytes=79996, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,22)
     cookie=0x79, duration=31570.247s, table=3, n_packets=0, n_bytes=0, priority=0 actions=drop
     cookie=0x79, duration=31570.242s, table=4, n_packets=42, n_bytes=3108, priority=1,tun_id=0x20 actions=mod_vlan_vid:100,resubmit(,10)
     cookie=0x79, duration=31570.238s, table=4, n_packets=385, n_bytes=16170, priority=0 actions=drop
     cookie=0x79, duration=31570.233s, table=6, n_packets=0, n_bytes=0, priority=0 actions=drop
     cookie=0x79, duration=31570.229s, table=10, n_packets=42, n_bytes=3108, priority=1 actions=learn(table=20,hard_timeout=300,priority=1,cookie=0xa9eb8f9011f7e038,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:"patch-int"
     cookie=0x79, duration=31570.224s, table=20, n_packets=13, n_bytes=1106, priority=0 actions=resubmit(,22)
     cookie=0x79, duration=31570.220s, table=22, n_packets=1887, n_bytes=80542, dl_vlan=100 actions=strip_vlan,set_tunnel:0x20,output:"vxlan-01"
     cookie=0x79, duration=31570.216s, table=22, n_packets=8, n_bytes=560, priority=0 actions=drop
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  • 原文地址:https://www.cnblogs.com/dream397/p/12676216.html
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