2 Open vSwitch supports tunneling in userspace. Tunneling is implemented in
3 platform independent way.
7 Setup physical bridges for all physical interfaces. Create integration bridge.
8 Add VXLAN port to int-bridge. Assign IP address to physical bridge where
9 VXLAN traffic is expected.
13 Connect to VXLAN tunnel endpoint logical ip: 192.168.1.2 and 192.168.1.1.
15 Configure OVS bridges as follows.
17 1. Lets assume 172.168.1.2/24 network is reachable via eth1 create physical bridge br-eth1
18 assign ip address (172.168.1.1/24) to br-eth1, Add eth1 to br-eth1
19 2. Check ovs cached routes using appctl command
20 ovs-appctl ovs/route/show
21 Add tunnel route if not present in OVS route table.
22 ovs-appctl ovs/route/add 172.168.1.1/24 br-eth1
23 3. Add integration brdge int-br and add tunnel port using standard syntax.
24 ovs-vsctl add-port int-br vxlan0 -- set interface vxlan0 type=vxlan options:remote_ip=172.168.1.2
25 4. Assign IP address to int-br, So final topology looks like:
30 | int-br | 192.168.1.2/24
31 +--------------+ +--------------+
33 +--------------+ +--------------+
39 | br-eth1 | 172.168.1.2/24
40 +--------------+ +---------------+
41 | eth1 |----------------------------------| eth1 |
42 +--------------+ +----------------
44 Host A with OVS. Remote host.
46 With this setup, ping to VXLAN target device (192.168.1.2) should work
47 There are following commands that shows internal tables:
49 Tunneling related commands:
50 ===========================
52 These commands are only available on Linux platform.
55 ovs-appctl ovs/route/add <IP address>/<prefix length> <output-bridge-name> <gw>
56 To see all routes configured:
57 ovs-appctl ovs/route/show
59 ovs-appctl ovs/route/del <IP address>/<prefix length>
62 To see arp cache content:
63 ovs-appctl tnl/arp/show
65 ovs-appctl tnl/arp/flush
67 To check tunnel ports listening in vswitchd:
68 ovs-appctl tnl/ports/show
70 To set range for VxLan udp source port:
72 ovs-appctl tnl/egress_port_range <num1> <num2>
74 ovs-appctl tnl/egress_port_range
76 To check datapath ports:
79 To check datapath flows:
80 ovs-appctl dpif/dump-flows