Thanks for the response Gurucharan I dont have any issues with the routing table entries. As mentioned, after setting up the tunnel, if I cannot ping from br0 -> br1, and at that time, if I initiate a ping in the reverse direction, i.e. from br1->br0 (which works), everything starts working. On tcpdump, I have observed the ARP requests making it to the eth0 on the other host, but the same request is not seen on the bridge, and neither do I see the response.
Thanks, Shridhar On Mon, Jul 14, 2014 at 4:54 PM, Gurucharan Shetty <shet...@nicira.com> wrote: > On Mon, Jul 14, 2014 at 4:22 PM, Shridhar Sahukar > <shridhar.sahu...@cyaninc.com> wrote: > > Hi, > > > > On my setup, I have 2 hosts connected with a GRE tunnel with following > > configuration: > > > > Host 1: > > > > #ovs-vsctl add-br br0 > > #ifconfig br0 1.1.1.1 > > #ovs-vsctl add-port br0 gre0 -- set interface gre0 type=gre > > options:remote_ip=<eth0 ip of host2> > > > > Host 2: > > #ovs-vsctl add-br br1 > > #ifconfig br1 1.1.2.1 > > #ovs-vsctl add-port br1 gre0 -- set interface gre0 type=gre > > options:remote_ip=<eth0 ip of host1> > > > > > As you can see, bridge 0 on host-1 and bridge 1 on host-2 are in > different > > subnet and I am trying to connect them with a GRE tunnel. > I suppose you have set the netmask properly. Otherwise they are in the > same subnet. > Assuming they are in different subnet, you will probably need routing > table entries. > > > > > > This setup works as expected for all other purposes, except that during > the > > initial setup the ARP communication does not happen as expected. > > > > Most of the times, when we ping bridge0 IP from host2 or bridge1 IP from > > host1, the ping does not work. tcpdump on the eth0 interface shows > incoming > > ARP requests, but I dont see any ARP responses going back. At this > point, if > > I initiate a reverse ping then everything starts working. > > > > It seems that the ARP requests are not getting forwarded to the bridge > from > > the GRE interface. Do I need to add any special flow? > > > > Any help is much appreciated. > > > > Thanks, > > Shridhar > > > > > > _______________________________________________ > > discuss mailing list > > discuss@openvswitch.org > > http://openvswitch.org/mailman/listinfo/discuss > > >
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