projects / ovs.git / blame
| Commit | Line | Data |
|---|---|---|
| e3639cbd BP |
1 | Native Tunneling in Open vSwitch userspace |
| 2 | ------------------------------------------ | |
| a36de779 PS |
3 | |
| 4 | Open vSwitch supports tunneling in userspace. Tunneling is implemented in | |
| 5 | platform independent way. | |
| 6 | ||
| 7 | Setup: | |
| 8 | ====== | |
| 9 | Setup physical bridges for all physical interfaces. Create integration bridge. | |
| 10 | Add VXLAN port to int-bridge. Assign IP address to physical bridge where | |
| 11 | VXLAN traffic is expected. | |
| 12 | ||
| 13 | Example: | |
| 14 | ======== | |
| 15 | Connect to VXLAN tunnel endpoint logical ip: 192.168.1.2 and 192.168.1.1. | |
| 16 | ||
| 17 | Configure OVS bridges as follows. | |
| 18 | ||
| 19 | 1. Lets assume 172.168.1.2/24 network is reachable via eth1 create physical bridge br-eth1 | |
| 20 | assign ip address (172.168.1.1/24) to br-eth1, Add eth1 to br-eth1 | |
| 21 | 2. Check ovs cached routes using appctl command | |
| 22 | ovs-appctl ovs/route/show | |
| 23 | Add tunnel route if not present in OVS route table. | |
| 24 | ovs-appctl ovs/route/add 172.168.1.1/24 br-eth1 | |
| 25 | 3. Add integration brdge int-br and add tunnel port using standard syntax. | |
| 26 | ovs-vsctl add-port int-br vxlan0 -- set interface vxlan0 type=vxlan options:remote_ip=172.168.1.2 | |
| 27 | 4. Assign IP address to int-br, So final topology looks like: | |
| 28 | ||
| 29 | ||
| 30 | 192.168.1.1/24 | |
| 31 | +--------------+ | |
| 32 | | int-br | 192.168.1.2/24 | |
| 33 | +--------------+ +--------------+ | |
| 34 | | vxlan0 | | vxlan0 | | |
| 35 | +--------------+ +--------------+ | |
| 36 | | | | |
| 37 | | | | |
| 38 | | | | |
| 39 | 172.168.1.1/24 | | |
| 40 | +--------------+ | | |
| 41 | | br-eth1 | 172.168.1.2/24 | |
| 42 | +--------------+ +---------------+ | |
| 43 | | eth1 |----------------------------------| eth1 | | |
| 44 | +--------------+ +---------------- | |
| 45 | ||
| 46 | Host A with OVS. Remote host. | |
| 47 | ||
| 48 | With this setup, ping to VXLAN target device (192.168.1.2) should work | |
| 49 | There are following commands that shows internal tables: | |
| 50 | ||
| 51 | Tunneling related commands: | |
| 52 | =========================== | |
| 53 | Tunnel routing table: | |
| 54 | To Add route: | |
| 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 | |
| 58 | To del route: | |
| 59 | ovs-appctl ovs/route/del <IP address>/<prefix length> | |
| bc786797 YT |
60 | To look up and display the route for a destination: |
| 61 | ovs-appctl ovs/route/lookup <IP address> | |
| a36de779 PS |
62 | |
| 63 | ARP: | |
| 64 | To see arp cache content: | |
| 65 | ovs-appctl tnl/arp/show | |
| 66 | To flush arp cache: | |
| 67 | ovs-appctl tnl/arp/flush | |
| 68 | ||
| 69 | To check tunnel ports listening in vswitchd: | |
| 70 | ovs-appctl tnl/ports/show | |
| 71 | ||
| 72 | To set range for VxLan udp source port: | |
| 73 | To set: | |
| 74 | ovs-appctl tnl/egress_port_range <num1> <num2> | |
| 75 | Shows Current range: | |
| 76 | ovs-appctl tnl/egress_port_range | |
| 77 | ||
| 78 | To check datapath ports: | |
| 79 | ovs-appctl dpif/show | |
| 80 | ||
| 81 | To check datapath flows: | |
| 82 | ovs-appctl dpif/dump-flows | |
| 83 | ||
| 84 | Contact | |
| 85 | ======= | |
| 86 | bugs@openvswitch.org |