[ovs-discuss] vxlan remote_ip flow help

[Andrei Andone]

Hello Jesse,

Yes, on Wireshark listening to eth0, I see udp packets being sent and 
received between the hosts (udp, destination port: 4789, which is vxlan 
port). So the hosts are comunicating (the tunnel is) but I can't see any 
reply on my br-vnet wireshark, or my VM receiving the answer that 
reached the host.

Thanks,
Andrei

On 08/28/2013 02:50 AM, Jesse Gross wrote:
> On Tue, Aug 27, 2013 at 5:51 AM, Andrei Andone 
> <andrei.andone at softvision.ro <mailto:andrei.andone at softvision.ro>> wrote:
>
>     Hello guys,
>
>     I have a question related to the "options:remote_ip=flow" feature.
>
>     My config looks like this for one host:
>
>     [root at localhost ~]# ovs-vsctl show
>     e927ea5a-41d8-4bf5-9145-5be06e18bc9f
>         Bridge "br-eth0"
>             Port "br-eth0"
>                 Interface "br-eth0"
>                     type: internal
>             Port "eth0"                   (external interface)
>                 Interface "eth0"
>         Bridge br-vnet
>             Port br-vnet
>                 Interface br-vnet
>                     type: internal
>             Port "vxlan1"                 (tunnel I use)
>                 Interface "vxlan1"
>                     type: vxlan
>                     options: {key="10", remote_ip=flow}
>             Port "vnet0"                  (port for the virtual machine)
>                 Interface "vnet0"
>         ovs_version: "1.12.90"
>     [root at localhost ~]#
>
>     If I set the "options:remote_ip=A.A.A.1" (the IP for host 2)
>     everything works just fine ARP requests from my VM, pings to the
>     subnet, etc.
>
>     If I leave it like this, it doesn't work.
>
>     I followed some instructions that I could find by google-ing.
>
>     I know I need to set up flows to transmit and to receive, but I'm
>     not sure how.
>     Until now, for transmitting I used:
>
>     ovs-ofctl add-flow br-vnet
>     "in_port=1,actions=set_field:A.A.A.1->tun_dst,output:2"
>     (in_port = virtual network port, output = tunnel port)
>
>
> Do you actually see packets going out on the wire when they hit this 
> flow?

-- 
Andrei Andone

SOFTVISION | 57 Republicii Street, 400489 Cluj-Napoca, Romania
Email: andrei.andone at softvision.ro <mailto:andrei.andone at softvision.ro> 
| Web: www.softvision.ro <http://www.softvision.ro>

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