[ovs-discuss] LISP Tunneling

[Ben Pfaff]

On Wed, May 17, 2017 at 02:52:39PM +0200, Ashish Kurian wrote:
> Dear OVS folks,
> 
> I have some doubts regarding LISP tunneling. I have a setup where I am
> getting incoming LISP tunneled packets into my OVS. What I want to do is to
> check the inner IP destination address and based on that I need to forward
> the packets. Let us say that there are only two possibilities for inner IP
> addresses : 10.0.0.1 and 10.0.0.2.
> 
> If the inner IP address is 10.0.0.1, then I want the packet to be forwarded
> to an interface (say eth1 and port number 1) without doing any change to
> the tunneled packet. If the inner IP address is 10.0.0.2, then I want the
> packet to be forwarded to the another interface (say eth2 and port number
> 2) with only the inner contents of the tunnel packets.
> 
> I am thinking of the following flow entries to do the mentioned rules, but
> correct me if I am wrong.
> 
> *
>  table=0,dl_type=0x0800,nw_dst=10.0.0.2,actions=mod_dl_dst=10:0:0:2,output:2*
> 
>    -          Will this flow check for the inner destination IP of the
>    tunneled packet and put only the metadata in port eth2?

I don't know what it means to "put only the metadata" in a port.  What
does it mean?

>           *table=0,dl_type=0x0800,action=NORMAL*
> 
> 
>    -     Will this flow take care of all other flows?

Yes.