Hi Jesse I observed the log of OVS. NOX can see gre device now However another thing which make me feel strange that each time when I use ovs-vsctl to add a port into datapath it will change itself's dpid.(a few time didnt change) In another document(ovs-openflowd) i found it has --datapath-id, but how can I keep the dpid by ovs-vsctl?
Best regards On Tue, Jun 22, 2010 at 6:48 AM, Jesse Gross <[email protected]> wrote: > On Sat, Jun 19, 2010 at 6:27 PM, Yan <[email protected]> wrote: > >> Hi Jesse >> >> Thank you for your reply and I'll take care to add cc. Sorry for last >> time. >> >> I saw the information from the *Create a GRE interface* thread, so I did >> like following: >> >> ovs-vsctl create interface name=gre0 type=gre options:remote_ip=remote >> machine's IP >> 99c94566-ea4f-41d9-9f40-d2e9c9a6d386 >> ovs-vsctl create port name=gre0 >> interfaces=[99c94566-ea4f-41d9-9f40-d2e9c9a6d386] >> f75aa483-e0ea-42e8-bb96-93110d630838 >> ovs-vsctl add bridge dp0 ports f75aa483-e0ea-42e8-bb96-93110d630838 >> >> And I also did the same thing at another machine.I got no error message >> but NOX didn't get a port event when I add gre into bridge(by ovs-vsctl add >> bridge dp0 ports f75aa483-e0ea-42e8-bb96-93110d630838). >> I also tried ovs-vsctl add-port dp0 gre0 but it didn't inform nox either. >> It seems OVS doesn't send a event to NOX. >> In this case NOX will not tell the OVS to forward a flow via that tunnel >> even if the tunnel is correct. >> >> Would please offer some suggestions about how could this be solved? >> > > OVS treats GRE ports just like normal Ethernet ports when it comes to > OpenFlow handling so if NOX isn't being notified it means that the port is > not being created correctly. Your commands look correct, so can you post > the contents of your ovs-vswitchd log file? > > Also, you're not using the userspace datapath are you? GRE is only > implemented in the openvswitch_mod.ko kernel module. > -- Yan Pu [email protected] +81-80-4164-9937 NAKAO LAB The university of Tokyo Graduate School of Interdisciplinary Information Studies
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