ovs流表机制（四）用vxlan实现同网段通信

[root@kunpeng82 devuser]# ovs-vsctl show
25581fe4-f414-4c0a-a9eb-5d04cc658c0c
    Bridge "vswitch0"
        Port "tap3_br"
            Interface "tap3_br"
        Port "vswitch0"
            Interface "vswitch0"
                type: internal
        Port "tap0_br"
            Interface "tap0_br"
    ovs_version: "2.12.0"

1、现在在kunpen82节点上配置vxlan
ovs-vsctl add-port vswitch0 vxlan1 -- set interface vxlan1 type=vxlan options:remote_ip=10.10.18.216 options:key=flow

[root@kunpeng82 devuser]# ovs-vsctl show
25581fe4-f414-4c0a-a9eb-5d04cc658c0c
Bridge "vswitch0"
Port "tap3_br"
Interface "tap3_br"
Port "vswitch0"
Interface "vswitch0"
type: internal
Port "vxlan1"
Interface "vxlan1"
type: vxlan
options: {key=flow, remote_ip="10.10.18.216"}
Port "tap0_br"
Interface "tap0_br"
ovs_version: "2.12.0"

[root@kunpeng82 devuser]# ovs-ofctl dump-flows vswitch0
cookie=0x0, duration=776.819s, table=0, n_packets=32, n_bytes=2464, priority=0 actions=NORMAL

[root@kunpeng82 devuser]# ovs-vsctl get Interface tap3_br ofport
2
[root@kunpeng82 devuser]# ovs-vsctl get Interface vxlan1 ofport
3

[root@kunpeng82 devuser]# ovs-vsctl get Interface tap0_br ofport
1

2、新建一个节点ovs216

[root@ovs216 ~]# cat test1.sh
ip netns add ns1
ip link add tap0 type veth peer name tap0_br
ip link set tap0 netns ns1
ovs-vsctl add-br vswitch0
ip netns exec ns1 ip link set tap0 up
ip netns exec ns1 ip link set lo up
ip link set tap0_br up

ip netns exec ns1 ip addr add 192.168.1.210/24 dev tap0
ip netns exec ns1 route add -net 192.168.1.0 netmask 255.255.255.0 dev tap0

ovs-vsctl add-port vswitch0 tap0_br

ovs-vsctl add-port vswitch0 vxlan1 -- set interface vxlan1 type=vxlan options:remote_ip=10.10.16.81 options:key=flow

[root@ovs216 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether fa:16:3e:0a:1e:35 brd ff:ff:ff:ff:ff:ff
inet 10.10.18.216/24 brd 10.10.18.255 scope global noprefixroute dynamic eth0
valid_lft 65736sec preferred_lft 65736sec
inet6 fe80::f816:3eff:fe0a:1e35/64 scope link
valid_lft forever preferred_lft forever
3: tap0_br@if4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master ovs-system state UP group default qlen 1000
link/ether be:31:dc:c3:35:36 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::bc31:dcff:fec3:3536/64 scope link
valid_lft forever preferred_lft forever
5: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 02:3a:c8:96:dc:3b brd ff:ff:ff:ff:ff:ff
6: vswitch0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state UP group default qlen 1000
link/ether 12:a3:09:cc:11:49 brd ff:ff:ff:ff:ff:ff
7: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc noqueue master ovs-system state UNKNOWN group default qlen 1000
link/ether 0e:f2:38:5c:be:4c brd ff:ff:ff:ff:ff:ff
inet6 fe80::cf2:38ff:fe5c:be4c/64 scope link
valid_lft forever preferred_lft forever

[root@ovs216 ~]# ovs-vsctl show
0608fdfe-ab3f-41d8-a439-b0dba68f452b
    Bridge "vswitch0"
        Port "vxlan1"
            Interface "vxlan1"
                type: vxlan
                options: {key=flow, remote_ip="10.10.16.82"}
        Port "tap0_br"
            Interface "tap0_br"
        Port "vswitch0"
            Interface "vswitch0"
                type: internal
    ovs_version: "2.12.0"

[root@ovs216 ~]# ovs-ofctl dump-flows vswitch0
cookie=0x0, duration=13327.894s, table=0, n_packets=32, n_bytes=1896, priority=0 actions=NORMAL

[root@ovs216 ~]# ovs-vsctl get Interface vxlan1 ofport
2

[root@ovs216 ~]# ovs-vsctl get Interface tap0_br ofport
1

[root@ovs216 ~]# ip netns exec ns1 ping 192.168.1.200
PING 192.168.1.200 (192.168.1.200) 56(84) bytes of data.
64 bytes from 192.168.1.200: icmp_seq=1 ttl=64 time=0.731 ms
64 bytes from 192.168.1.200: icmp_seq=2 ttl=64 time=0.291 ms
^C
--- 192.168.1.200 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1028ms
rtt min/avg/max/mdev = 0.291/0.511/0.731/0.220 ms

ping通

[root@kunpeng82 devuser]# ovs-vsctl list interface tap3_br
_uuid               : 9fe5705c-f864-42e9-87e1-671062bba462
admin_state         : up
bfd                 : {}
bfd_status          : {}
cfm_fault           : []
cfm_fault_status    : []
cfm_flap_count      : []
cfm_health          : []
cfm_mpid            : []
cfm_remote_mpids    : []
cfm_remote_opstate  : []
duplex              : full
error               : []
external_ids        : {}
ifindex             : 8
ingress_policing_burst: 0
ingress_policing_rate: 0
lacp_current        : []
link_resets         : 0
link_speed          : 10000000000
link_state          : up
lldp                : {}
mac                 : []
mac_in_use          : "52:85:e1:a0:f2:69"
mtu                 : 1500
mtu_request         : []
name                : "tap3_br"
ofport              : 2
ofport_request      : []
options             : {}
other_config        : {}
statistics          : {collisions=0, rx_bytes=3498, rx_crc_err=0, rx_dropped=0, rx_errors=0, rx_frame_err=0, rx_over_err=0, rx_packets=47, tx_bytes=3918, tx_dropped=0, tx_errors=0, tx_packets=53}
status              : {driver_name=veth, driver_version="1.0", firmware_version=""}
type                : ""