本博客是爲了記錄學習過程，所有結果僅僅是本實驗的實驗結果
環境準備
系統:
[root@172-17-0-8 ~]# uname -a
Linux 172-17-0-8 3.10.0-514.21.1.el7.x86_64 #1 SMP Thu May 25 17:04:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@172-17-0-12 ~]# uname -a
Linux 172-17-0-12 3.10.0-1062.9.1.el7.x86_64 #1 SMP Fri Dec 6 15:49:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
實驗過程
兩臺機器都要執行
1.創建vxlan
ip link add vxlan0 type vxlan id 42 dstport 4789 local 172.17.0.12 group 233.1.1.1 dev eth0
[root@172-17-0-12 ~]# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 52:54:00:de:1e:8e brd ff:ff:ff:ff:ff:ff
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default
link/ether 02:42:ce:f5:ea:25 brd ff:ff:ff:ff:ff:ff
5: veth06ed271@if4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT group default
link/ether 16:14:4c:94:a2:9d brd ff:ff:ff:ff:ff:ff link-netnsid 0
7: veth90597d0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP mode DEFAULT group default
link/ether d2:27:14:f3:44:4b brd ff:ff:ff:ff:ff:ff link-netnsid 1
23: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
32: vxlan0: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether fe:d7:ff:13:75:a2 brd ff:ff:ff:ff:ff:ff
2.設置vxlan0 IP
[root@172-17-0-12 ~]# ip addr add 172.17.1.2/24 dev vxlan0
[root@172-17-0-12 ~]# ip link set vxlan0 up
[root@172-17-0-12 ~]# 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 mq state UP group default qlen 1000
link/ether 52:54:00:de:1e:8e brd ff:ff:ff:ff:ff:ff
inet 172.17.0.12/20 brd 172.17.15.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fede:1e8e/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:ce:f5:ea:25 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:ceff:fef5:ea25/64 scope link
valid_lft forever preferred_lft forever
5: veth06ed271@if4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether 16:14:4c:94:a2:9d brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::1414:4cff:fe94:a29d/64 scope link
valid_lft forever preferred_lft forever
7: veth90597d0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether d2:27:14:f3:44:4b brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::d027:14ff:fef3:444b/64 scope link
valid_lft forever preferred_lft forever
23: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
32: vxlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN group default qlen 1000
link/ether fe:d7:ff:13:75:a2 brd ff:ff:ff:ff:ff:ff
inet 172.17.1.2/24 scope global vxlan0
valid_lft forever preferred_lft forever
inet6 fe80::fcd7:ffff:fe13:75a2/64 scope link
valid_lft forever preferred_lft forever
3.查看fdb表，添加對應的fdb信息
[root@172-17-0-12 ~]# ip route
default via 172.17.0.1 dev eth0
169.254.0.0/16 dev eth0 scope link metric 1002
172.17.0.0/20 dev eth0 proto kernel scope link src 172.17.0.12
172.17.1.0/24 dev vxlan0 proto kernel scope link src 172.17.1.2
172.18.0.0/16 dev docker0 proto kernel scope link src 172.18.0.1
[root@172-17-0-12 ~]# bridge fdb
33:33:00:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth0 self permanent
33:33:ff:de:1e:8e dev eth0 self permanent
01:00:5e:01:01:01 dev eth0 self permanent
33:33:00:00:00:01 dev docker0 self permanent
01:00:5e:00:00:01 dev docker0 self permanent
33:33:ff:f5:ea:25 dev docker0 self permanent
02:42:ce:f5:ea:25 dev docker0 master docker0 permanent
02:42:ce:f5:ea:25 dev docker0 vlan 1 master docker0 permanent
16:14:4c:94:a2:9d dev veth06ed271 vlan 1 master docker0 permanent
16:14:4c:94:a2:9d dev veth06ed271 master docker0 permanent
33:33:00:00:00:01 dev veth06ed271 self permanent
01:00:5e:00:00:01 dev veth06ed271 self permanent
33:33:ff:94:a2:9d dev veth06ed271 self permanent
d2:27:14:f3:44:4b dev veth90597d0 vlan 1 master docker0 permanent
d2:27:14:f3:44:4b dev veth90597d0 master docker0 permanent
33:33:00:00:00:01 dev veth90597d0 self permanent
01:00:5e:00:00:01 dev veth90597d0 self permanent
33:33:ff:f3:44:4b dev veth90597d0 self permanent
00:00:00:00:00:00 dev vxlan0 dst 233.1.1.1 via eth0 self permanent
[root@172-17-0-12 ~]# bridge fdb append to 00:00:00:00:00:00 dst 172.17.0.12 dev vxlan0