[ovs-discuss] vm can't ping over ovs gre port
Alex Wang
alexw at nicira.com
Fri Jul 5 16:49:18 UTC 2013
Hey JinHwan,
Could you also provide the "ovs-dpctl dump-flows" and "tcpdump" output?
Kind Regards,
Alex Wang,
On Fri, Jul 5, 2013 at 12:23 AM, JinHwan Hwang <calanchue at gmail.com> wrote:
> I've followed ovs gre setting described at this<http://blog.scottlowe.org/2013/05/07/using-gre-tunnels-with-open-vswitch/>.
> But i couldn't ping from a vm to other vm over gre. I just got packet loss
> message from ping command. As i understand ping should go through gre0 and
> so on br0 and em0(physical ethernet interface). I'm currently can't figured
> out where to start to solve this problem. I attached all data which is
> relevant to this problem as i think.
>
> thanks for your help
>
>
> em1, 2 : physical ethernet interface.
> vnet0 : virtual interface for the vm at host.
> default policy for iptables is ACCEPT.
>
> host1
> -----------------------------------------------
> # ovs-vsctl show
> a27e5053-57f1-4abc-ad16-740b991deaf4
> Bridge "br1"
> Port "vnet0"
> Interface "vnet0"
> Port "gre1"
> Interface "gre1"
> type: gre
> options: {remote_ip="192.168.100.21"}
> Port "br1"
> Interface "br1"
> type: internal
> Bridge "br0"
> Port "tep0"
> Interface "tep0"
> type: internal
> Port "em2"
> Interface "em2"
> Port "br0"
> Interface "br0"
> type: internal
>
> # ifconfig
> br0 Link encap:Ethernet HWaddr 78:45:C4:F1:77:D3
> inet addr:111.111.104.20 Bcast:111.111.255.255 Mask:255.255.0.0
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:87798 errors:0 dropped:0 overruns:0 frame:0
> TX packets:8311 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:16964268 (16.1 MiB) TX bytes:4102764 (3.9 MiB)
>
> br1 Link encap:Ethernet HWaddr 06:6F:5E:19:8E:43
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:70 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:7424 (7.2 KiB) TX bytes:0 (0.0 b)
>
> em1 Link encap:Ethernet HWaddr 78:45:C4:F1:77:D1
> inet addr:172.16.143.20 Bcast:172.16.143.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:1013749 errors:0 dropped:0 overruns:0 frame:0
> TX packets:591839 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:116551436 (111.1 MiB) TX bytes:190337381 (181.5 MiB)
> Interrupt:36 Memory:d6000000-d6012800
>
> em2 Link encap:Ethernet HWaddr 78:45:C4:F1:77:D3
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:271696 errors:0 dropped:0 overruns:0 frame:0
> TX packets:31348 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:52996899 (50.5 MiB) TX bytes:13088219 (12.4 MiB)
> Interrupt:48 Memory:d8000000-d8012800
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:77086 errors:0 dropped:0 overruns:0 frame:0
> TX packets:77086 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:9595600 (9.1 MiB) TX bytes:9595600 (9.1 MiB)
>
> tep0 Link encap:Ethernet HWaddr 76:EE:E6:89:FE:46
> inet addr:192.168.100.20 Bcast:192.168.100.255
> Mask:255.255.255.0
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:79785 errors:0 dropped:0 overruns:0 frame:0
> TX packets:155 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:9641257 (9.1 MiB) TX bytes:15049 (14.6 KiB)
>
> vnet0 Link encap:Ethernet HWaddr FE:0D:45:A3:92:EA
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:271 errors:0 dropped:0 overruns:0 frame:0
> TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:500
> RX bytes:25038 (24.4 KiB) TX bytes:3498 (3.4 KiB)
>
> # route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 192.168.100.0 * 255.255.255.0 U 0 0 0
> tep0
> 172.16.143.0 * 255.255.255.0 U 0 0 0 em1
> link-local * 255.255.0.0 U 1002 0 0 em1
> 111.111.0.0 * 255.255.0.0 U 0 0 0 br0
> default 111.111.104.1 0.0.0.0 UG 0 0 0 br0
>
>
>
>
>
> host2
> -----------------------------------------------
> # ovs-vsctl show
> 5dcbfca3-e518-4214-8c23-7b89b30719ad
> Bridge "br0"
> Port "br0"
> Interface "br0"
> type: internal
> Port "tep0"
> Interface "tep0"
> type: internal
> Port "em2"
> Interface "em2"
> Bridge "br1"
> Port "br1"
> Interface "br1"
> type: internal
> Port "gre1"
> Interface "gre1"
> type: gre
> options: {remote_ip="192.168.100.20"}
> Port "vnet0"
> Interface "vnet0"
>
>
> # ifconfig
> br0 Link encap:Ethernet HWaddr D4:BE:D9:AC:F0:CF
> inet addr:111.111.104.21 Bcast:111.111.255.255 Mask:255.255.0.0
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:87006 errors:0 dropped:0 overruns:0 frame:0
> TX packets:13260 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:12556550 (11.9 MiB) TX bytes:4318048 (4.1 MiB)
>
> br1 Link encap:Ethernet HWaddr CA:5A:E9:93:13:4A
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:70 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:7424 (7.2 KiB) TX bytes:0 (0.0 b)
>
> em1 Link encap:Ethernet HWaddr D4:BE:D9:AC:F0:CD
> inet addr:172.16.143.21 Bcast:172.16.143.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:903898 errors:0 dropped:0 overruns:0 frame:0
> TX packets:417417 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:101599551 (96.8 MiB) TX bytes:116662118 (111.2 MiB)
> Interrupt:36 Memory:d6000000-d6012800
>
> em2 Link encap:Ethernet HWaddr D4:BE:D9:AC:F0:CF
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:287767 errors:0 dropped:0 overruns:0 frame:0
> TX packets:48626 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:54416236 (51.8 MiB) TX bytes:14369437 (13.7 MiB)
> Interrupt:48 Memory:d8000000-d8012800
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:186515 errors:0 dropped:0 overruns:0 frame:0
> TX packets:186515 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:21395412 (20.4 MiB) TX bytes:21395412 (20.4 MiB)
>
> tep0 Link encap:Ethernet HWaddr 5A:97:DC:14:AD:B8
> inet addr:192.168.100.21 Bcast:192.168.100.255
> Mask:255.255.255.0
> UP BROADCAST RUNNING MTU:1500 Metric:1
> RX packets:77121 errors:0 dropped:0 overruns:0 frame:0
> TX packets:156 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:13815665 (13.1 MiB) TX bytes:14693 (14.3 KiB)
>
> vnet0 Link encap:Ethernet HWaddr FE:0D:45:A3:92:EA
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:51 errors:0 dropped:0 overruns:0 frame:0
> TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:500
> RX bytes:4170 (4.0 KiB) TX bytes:1136 (1.1 KiB)
>
> # route
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 192.168.100.0 * 255.255.255.0 U 0 0 0
> tep0
> 172.16.143.0 * 255.255.255.0 U 0 0 0 em1
> link-local * 255.255.0.0 U 1002 0 0 em1
> 111.111.0.0 * 255.255.0.0 U 0 0 0 br0
> default 111.111.104.1 0.0.0.0 UG 0 0 0 br0
>
>
> vm at host 1
> -----------------------------------------
> eth0 : 10.123.123.20
>
> vm at host 2
> -----------------------------------------
> eth0 : 10.123.123.21
>
>
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>
>
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