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? Thank you. On Sun, Jun 20, 2010 at 5:22 AM, Jesse Gross <je...@nicira.com> wrote: > On Sat, Jun 19, 2010 at 2:12 AM, Yan <yan.p.b...@gmail.com> wrote: > >> Hi Jesse, >> I want to try GRE tunnel with OVS, and I follow the instruction here >> http://www.mail-archive.com/discuss@openvswitch.org/msg00356.html >> I unloaded ip_gre, however it doesn't work. >> since I have two nic in my machine with different IP so do i have >> to specify a local_ip? >> > > Can you please cc the list when sending messages? That way it can > potentially help other people. > > You only need to specify local_ip if you are trying to distinguish two > tunnels that are otherwise the same. Not specifying it will cause all > packets to be accepted by a particular tunnel. > > >> >> When I add a common interface into bridge I can see a msg from nox like >> |DBG:received port status event from 00ff002799f2 >> But when I add a GREtap to bridge nothing can be seen. >> > > When you say GREtap do you mean Linux GRE devices? Those are not > supported. When you use OVS GRE the type is simply "gre". > > >> i want to know that does vswitchd deamon monitor the gre tunnel traffic >> from a physical interface since you mentioned that it is no longer necessary >> to load OVS GRE module. >> > > It doesn't directly pull GRE traffic off the physical interface - OVS still > registers a protocol handler with the Linux IP stack for GRE. The reason > why you no longer need to load a separate module is that GRE has been > directly integrated into the main openvswitch_mod. > > >> Would you please give more details about OVS's GRE? >> > > If you are still having problems please post the exact commands you are > using and the output. > -- Yan Pu y...@nakao-lab.org +81-80-4164-9937 NAKAO LAB The university of Tokyo Graduate School of Interdisciplinary Information Studies
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