[pox-dev] nw_proto not getting added in the flow

[Murphy McCauley]

I am pretty sure this code will cause an exception, since I don't think the attributes you're setting on the match correspond to NXM types.  Does it not?

See inline...

On Dec 5, 2013, at 4:27 PM, Jayanth xForums <jayanthsileshs.forums at gmail.com> wrote:

> Hi All,
> 
> I have written a small pox as follows but in the OVS 2.0 it does not add the nw_proto in the flow table.
> 
> The pox code is as follows:
>    
>    # Turn on Nicira packet_ins
>     msg = nx.nx_packet_in_format()
>     event.connection.send(msg)
> 
>     # Turn on ability to specify table in flow_mods
>     msg = nx.nx_flow_mod_table_id()
>     event.connection.send(msg)
> 
>     msg1 = nx.nx_flow_mod()
>     #msg1.match = nx.nx_match()
>     msg1.match.of_dl_type = pkt.ethernet.IP_TYPE

Try .eth_type = pkt.ethernet.IP_TYPE

>     #msg1.match.nw_proto = pkt.ipv4.TCP_PROTOCOL
>     msg1.match.of_nw_proto = 6

Try .ip_proto = 6

>     msg1.actions.append(nx.nx_action_resubmit.resubmit_table(table = 1))
>     event.connection.send(msg1)
> 
> 
> Thanks,
> Jayanth 
> Graduate Student
> USC


Alternately, instead of using nx_flow_mod, use ofp_flow_mod_table_id, which is just like a normal ofp_flow_mod except with a table_id.

-- Murphy