Hi,

 > The question is: What match field(s) I must use to identify an LLDP pkts
 > and install rule to forward, only these, to port 3?

You can determine the LLDP in the following content.
  - Destination Mac address is '01-80-c2-00-00-0E'
  - Ethertype is '0x88CC'

https://wiki.wireshark.org/LinkLayerDiscoveryProtocol


Please try to set these to match field.

http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#flow-match-structure


Thanks,

On 2016年06月27日 17:09, Maurizio Marrocco wrote:
> Hi to everyone.
>
>
> I am using simple_switch_13.py file on RYU
>
> I would like to identify LLDP packets and forward them to port N
>
> I am using import ryu.topology.api for topology discovery module, It is
> right?
>
> The question is: What match field(s) I must use to identify an LLDP pkts
> and install rule to forward, only these, to port 3?
>
>
> Thanks for future reply
>
> Maurizio.
>
>
>
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