OVN Open virtual Network

 1# ADD_BR()
 2ovs-vsctl add-br br-int-1
 3# ADD_NAMESPACES(foo1)
 4ip netns add foo1
 5# NS_EXEC([namespace],[command])
 6ip netns exec foo1 ip link
 7# ADD_VETH(foo1, foo1, br-int, "192.168.1.2/24","f0:00:00:01:02:03",
 8# "192.168.1.1")
 9# ADD_VETH([port],[namespace],[ovs-br],[ip_addr],[mac_addr],[gateway],
10# [ip_addr_flags])
11
12
13ip link add $1 type veth peer name ovs-$1
14ip link set $1 netns $2
15ip link set dev ovs-$1 up
16ovs-vsctl add-port $3 ovs-$1 -- \
17set interface ovs-$1 external-ids:iface-id="$1"
18
19ip netns exec $2 ip addr add $4 dev $1 $7
20ip netns exec $2 ip link set dev $1 up
21ip netns exec $2 ip link set dev $1 address $5
22ip netns exec $2 ip route add default via $6
23
24ip link del ovs-foo1

 1function ADD_NAMESPACES(){
 2        ip netns add $1
 3}
 4
 5
 6function ADD_VETH(){
 7set -x
 8
 9ip link add $1 type veth peer name ovs-$1
10ip link set $1 netns $2
11ip link set dev ovs-$1 up
12ovs-vsctl add-port $3 ovs-$1 -- \
13set interface ovs-$1 external-ids:iface-id="$1"
14
15ip netns exec $2 ip addr add $4 dev $1 $7
16ip netns exec $2 ip link set dev $1 up
17ip netns exec $2 ip link set dev $1 address $5
18ip netns exec $2 ip route add default via $6
19}
20
21ovs-vsctl add-br br-int-1
22ovn-nbctl create Logical_Router name=R1
23ovn-nbctl create Logical_Router name=R2 options:chassis=hv1
24
25ovn-nbctl ls-add foo
26ovn-nbctl ls-add bar
27ovn-nbctl ls-add alice
28ovn-nbctl ls-add join
29
30# Connect foo to R1
31ovn-nbctl lrp-add R1 foo 00:00:01:01:02:03 192.168.1.1/24
32ovn-nbctl lsp-add foo rp-foo -- set Logical_Switch_Port rp-foo \
33            type=router options:router-port=foo addresses='"00:00:01:01:02:03"'
34
35# Connect bar to R1
36ovn-nbctl lrp-add R1 bar 00:00:01:01:02:04 192.168.2.1/24
37ovn-nbctl lsp-add bar rp-bar -- set Logical_Switch_Port rp-bar \
38            type=router options:router-port=bar addresses='"00:00:01:01:02:04"'
39
40# Connect alice to R2
41ovn-nbctl lrp-add R2 alice 00:00:02:01:02:03 172.16.1.1/24
42ovn-nbctl lsp-add alice rp-alice -- set Logical_Switch_Port rp-alice \
43            type=router options:router-port=alice addresses='"00:00:02:01:02:03"'
44
45# Connect R1 to join
46ovn-nbctl lrp-add R1 R1_join 00:00:04:01:02:03 20.0.0.1/24
47ovn-nbctl lsp-add join r1-join -- set Logical_Switch_Port r1-join \
48            type=router options:router-port=R1_join addresses='"00:00:04:01:02:03"'
49
50# Connect R2 to join
51ovn-nbctl lrp-add R2 R2_join 00:00:04:01:02:04 20.0.0.2/24
52ovn-nbctl lsp-add join r2-join -- set Logical_Switch_Port r2-join \
53            type=router options:router-port=R2_join addresses='"00:00:04:01:02:04"'
54
55# Static routes.
56ovn-nbctl lr-route-add R1 172.16.1.0/24 20.0.0.2
57ovn-nbctl lr-route-add R2 192.168.0.0/16 20.0.0.1
58
59
60
61ADD_NAMESPACES foo1
62ADD_VETH foo1 foo1 br-int-1 "192.168.1.2/24" "f0:00:00:01:02:03" "192.168.1.1"
63ovn-nbctl lsp-add foo foo1 -- lsp-set-addresses foo1 "f0:00:00:01:02:03 192.168.1.2"
64ADD_NAMESPACES alice1
65ADD_VETH alice1 alice1 br-int-1 "172.16.1.2/24" "f0:00:00:01:02:04" "172.16.1.1"
66ovn-nbctl lsp-add alice alice1 -- lsp-set-addresses alice1 "f0:00:00:01:02:04 172.16.1.2"
67ADD_NAMESPACES bar1
68ADD_VETH bar1 bar1 br-int-1 "192.168.2.2/24" "f0:00:00:01:02:05" "192.168.2.1"
69ovn-nbctl lsp-add bar bar1 -- lsp-set-addresses bar1 "f0:00:00:01:02:05 192.168.2.2"

 1# destroy the env
 2ip netns del foo1
 3ip netns del bar1
 4ip netns del alice1    
 5ovn-nbctl lr-del R1
 6ovn-nbctl lr-del R2
 7ovn-nbctl ls-del foo
 8ovn-nbctl ls-del bar
 9ovn-nbctl ls-del alice
10ovn-nbctl ls-del join
11ovs-vsctl del-br br-int-1

 1# Create 2 VRFs(namespasce) VRF1 and VRF2
 2ip netns add VRF1
 3ip netns add VRF2
 4ip netns list
 5# Create virtual ethernet port vEth1 and vEth2 and connect them to eatch other
 6ip link add veth1 type veth peer name veth2
 7# Create virtual ethernet port vEth3 and vEth4 and connect them to each other
 8ip link add veth3 type veth peer name veth4
 9# Move vEth1 to VRF1
10ip link set veth1 netns VRF1
11# Move vEth3 to VRF2
12ip link set veth3 netns VRF2
13# Assign IP addresses to vEth
14# ip netns exec VRF1 ifconfig veth1 10.10.10.1/24 up
15ip netns exec VRF1 ip addr add 10.10.10.1/24 dev veth1 
16ip netns exec VRF1 ip link set veth1 up
17# ip netns exec VRF1 ifconfig
18ip netns exec VRF1 ip a
19# ip netns exec VRF2 ifconfig veth3 10.10.10.2/24 up
20ip netns exec VRF2 ip addr add 10.10.10.2/24 dev veth3
21ip netns exec VRF2 ip link set veth3 up
22ip netns exec VRF2 ip a
23
24# Create vSwitch1
25ovs-vsctl add-br vSwitch1
26# Assign vEth2 and vEth4 to vSwitch1
27ovs-vsctl add-port vSwitch1 veth2
28ovs-vsctl add-port vSwitch1 veth4
29
30ip link set veth2 up
31ip link set veth4 up 
32# Test connectivity
33ip netns exec VRF1 ping -c 3 10.10.10.2
34ip addr add 10.10.10.3/24 dev vSwitch1
35ping -c 3 10.10.10.1
36ping -c 3 10.10.10.2
37# Enable Spanning Tree of vSwith1
38ovs-ctl set bridge vSwitch1 stp_enable=true
39# the port from listening to forwarding, it can work to receive packet
40ovsdb-client dump
41# ovs-ctl set bridge vSwitch1 stp_enable=false
42# ovsdb-client dump
43
44
45# Assign IP address to SVI(Bridge Interface,switch virtual interface) of vSwitch1
46
47# Check the MAC address table of vSwitch1
48ovs-appctl fdb/show vSwitch1