<div dir="ltr">Dear Ben,<div><br></div><div>thanks for the support!</div><div><br></div><div>I receive the error on two servers C & D, below the command outputs:</div><div><br></div><div><div>[root@C ~]# ovs-dpctl show</div><div>system@ovs-system:</div><div><span style="white-space:pre"> </span>lookups: hit:283639 missed:348 lost:0</div><div><span style="white-space:pre"> </span>flows: 14</div><div><span style="white-space:pre"> </span>masks: hit:1027059 total:3 hit/pkt:3.62</div><div><span style="white-space:pre"> </span>port 0: ovs-system (internal)</div><div><span style="white-space:pre"> </span>port 1: ovsbr0 (internal)</div><div><span style="white-space:pre"> </span>port 2: enp4s0</div><div><span style="white-space:pre"> </span>port 3: tep0 (internal)</div><div><span style="white-space:pre"> </span>port 4: vxlan_sys_4789 (vxlan: packet_type=ptap)</div></div><div><br></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">[root@D ~]# ovs-dpctl show</span><br></div><div><div>system@ovs-system:</div><div><span style="white-space:pre"> </span>lookups: hit:230545 missed:378 lost:0</div><div><span style="white-space:pre"> </span>flows: 12</div><div><span style="white-space:pre"> </span>masks: hit:707437 total:2 hit/pkt:3.06</div><div><span style="white-space:pre"> </span>port 0: ovs-system (internal)</div><div><span style="white-space:pre"> </span>port 1: ovsbr0 (internal)</div><div><span style="white-space:pre"> </span>port 2: enp4s0</div><div><span style="white-space:pre"> </span>port 3: tep0 (internal)</div><div><span style="white-space:pre"> </span>port 4: vxlan_sys_4789 (vxlan: packet_type=ptap)</div></div><div><br></div><div>Thanks in advance,</div><div><br></div><div>Cheers,</div><div><br></div><div>Woz</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 7 March 2018 at 21:02, Ben Pfaff <span dir="ltr"><<a href="mailto:blp@ovn.org" target="_blank">blp@ovn.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Wed, Mar 07, 2018 at 11:47:48AM +0100, woz woz wrote:<br>
> Dear support,<br>
> I’m testing OpenVSwitch version 2.9. on my infrastructure using CentOS7,<br>
> but I’m having any problem, below my config:<br>
> I have 4 servers with the public IP address, e.g.<br>
> A-> 1.1.1.1<br>
> B-> 2.2.2.2<br>
> C-> 3.3.3.3<br>
> D-> 4.4.4.4<br>
> between these servers I've configured a VXLAN tunnel, in this way :<br>
> the server named A has a VXLAN tunnel with C and D<br>
> the server named B has a VXLAN tunnel with C and D<br>
> the servers named C and D obviously have a tunnel with A and B<br>
> I executed this kind of configuration because I would like to have a<br>
> redundancy between the servers A and B , e.g if A goes down I migrate all<br>
> the services on B and the servers C and D can continue to work without any<br>
> problem.<br>
> But I have the following messages on the /var/log/message :<br>
> "kernel: openvswitch: ovs: recursion limit reached on datapath ovs-system,<br>
> probable configuration error”<br>
><br>
> I 've read articles related to this kind of problem and I played also with<br>
> the STP protocol in order to avoid a possible loop but I don't understand<br>
> if I can use this configuration or I have to find another solution.<br>
<br>
</span>This message wouldn't be caused by a loop among servers but some kind of<br>
configuration problem on an individual server. When you see this<br>
message, what is in the kernel flow table ("ovs-dpctl dump-flows") and<br>
what ports are configured ("ovs-dpctl show")?<br>
</blockquote></div><br></div>