[ovs-discuss] multiple GRE with OVS

[othmane]

Hi all,

 

I want to know if its possible to set multiple tunnels gre on the same link.
Actually, I have two host: Host 1 with 2 VMs (VM1 and VM2) and OVS1, Host 2
with VM3, VM4 and OVS2. 

In OVS1 (10.180.121.41) I have three bridge : br0 attached to the physical
interface eth0, br1 (192.168.10.2) connected to VM1 (192.168.10.4) and br2
(172.16.10.2) connected to VM2 (172.16.10.4)

In OVS2 (10.180.121.70) I have three bridge too: br0 attached to the
physical interface eth0, br1 (192.168.10.3) connected to VM3 (192.168.10.5)
and br2 (172.16.10.3) connected to VM4 (172.16.10.5)

 

I establish a first gre tunnel between VM1 and VM3 and everything worked
fine! I could ping the two machine. However, when I try to establish a
second gre tunnel over the same link between VM2 and VM4, it doesn't work.
Actually I created the tunnel correctly, the configuration in ovs-vsctl show
is correct, I didn't have any error but when the ping between 172.16.10.3
and 172.16.10.2 and the ping between 172.16.10.4 and 172.16.10.5 failed
both. When I remove br1 from both machines, the previous pings work. "route
-n" is correct too. I was wondering if it possible to establish multiple gre
tunnel over the same link.

 

Any help will be appreciated, thinks in advance.

 

 

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