[ovs-discuss] VXLAN tunnel issue

Shahryar Ali shahryaralik at gmail.com
Sat Jul 27 11:35:28 UTC 2013


Hi i am newbie in Openvswitch and trying to create a VXLAN tunnel. I am
having issue in connectivity. I am not able to ping the isolated bridges
through VXLAN tunnel. The tunnel end points do have the connectivity. Here
is my configuration:

Host 1:

Bridge "br0"
        Port "br0"
            Interface "br0"
                type: internal
        Port "eth0"
            Interface "eth0"
    Bridge "br1"
        Port "vxlan1"
            Interface "vxlan1"
                type: vxlan
                options: {key=flow, remote_ip="192.168.1.102"}
        Port "br1"
            Interface "br1"
                type: internal

root at shahryar-VirtualBox:~# ifconfig
br0       Link encap:Ethernet  HWaddr 08:00:27:44:9b:8b
          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::7cda:c4ff:fe22:880a/64 Scope:Link
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:318 errors:0 dropped:0 overruns:0 frame:0
          TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:54076 (54.0 KB)  TX bytes:2358 (2.3 KB)

br1       Link encap:Ethernet  HWaddr 16:0a:50:e6:5c:4c
          inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::4068:38ff:feeb:65bd/64 Scope:Link
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:468 (468.0 B)

eth0      Link encap:Ethernet  HWaddr 08:00:27:44:9b:8b
          inet6 addr: fe80::a00:27ff:fe44:9b8b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:297 errors:0 dropped:0 overruns:0 frame:0
          TX packets:452 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:53173 (53.1 KB)  TX bytes:86554 (86.5 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:1885 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1885 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:148186 (148.1 KB)  TX bytes:148186 (148.1 KB)


root at shahryar-VirtualBox:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 br0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 br0
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 br1


Host 2:

root at shahryarvm2-VirtualBox:~# ovs-vsctl show
88f16842-6876-4e1d-8607-e097bd2ad435
    Bridge "br0"
        Port "eth0"
            Interface "eth0"
        Port "br0"
            Interface "br0"
                type: internal
    Bridge "br1"
        Port "vxlan1"
            Interface "vxlan1"
                type: vxlan
                options: {key=flow, remote_ip="192.168.1.101"}
        Port "br1"
            Interface "br1"
                type: internal

root at shahryarvm2-VirtualBox:~# ifconfig

br0       Link encap:Ethernet  HWaddr 08:00:27:0f:8d:47
          inet addr:192.168.1.102  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::2c7d:cbff:fe71:a555/64 Scope:Link
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:222 errors:0 dropped:0 overruns:0 frame:0
          TX packets:38 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:35357 (35.3 KB)  TX bytes:2932 (2.9 KB)

br1       Link encap:Ethernet  HWaddr a6:cc:a0:52:17:4c
          inet addr:192.168.2.2  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::f425:39ff:fe31:15d8/64 Scope:Link
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:468 (468.0 B)

eth0      Link encap:Ethernet  HWaddr 08:00:27:0f:8d:47
          inet6 addr: fe80::a00:27ff:fe0f:8d47/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:285 errors:0 dropped:0 overruns:0 frame:0
          TX packets:397 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:54697 (54.6 KB)  TX bytes:61879 (61.8 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:1902 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1902 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:147656 (147.6 KB)  TX bytes:147656 (147.6 KB)

root at shahryarvm2-VirtualBox:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 br0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 br0
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 br1


Interestingly, the VXLAN is not showing up as port in ovs-dpctl show output:

root at shahryarvm2-VirtualBox:~# ovs-dpctl show
system at ovs-system:
lookups: hit:70 missed:36 lost:0
flows: 2
port 0: ovs-system (internal)
port 1: br0 (internal)
port 2: eth0
port 3: tep0 (internal)
port 4: br1 (internal)

And i got the following message in the logs:

2013-07-26T18:11:02Z|00011|dpif|WARN|system at ovs-system: failed to add
vxlan1 as port: Address family not supported by protocol

What does it mean by address family not supported by protocol? .It seems
that VXLAN is not working at all. I know i am missing some important part
of the configuration. Could somebody please help me. Thanks!
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