I believe that you need to config the GRE tunnel manually to your data
plane first.
For example, you need to setup interface type to *gre* when you add an
interface to the OvS switch.
*ovs-vsctl add-port br0 gre0*
*ovs-vsctl set interface gre0 type=gre options:remote_ip={another grp
tunnel end point address}*
Different types of data plane may require different way to config the gre
tunnel
2018-05-24 16:04 GMT+08:00 Bilal Saleem <mb...@nyu.edu>:
> Hi,
>
> I am working on simple topology as follows:
> C
> / | \
> Veth ports-----S1 -- S2 --- S3 ---- H1
>
> I am sending raw packets cooked with GRE headers on Veth ports. I want to
> create rules based on GRE key value like this:
> match2 = parser.OFPMatch(in_port=2, eth_dst=dst, eth_type=0x0800,
> ip_proto=47, *grekey=XXXXX*)
>
> I have used *tunnel_id* and *tunnel_id_nxm* field but does not work. all
> packets match the rules where the tunnel_id value is 0.
> If I use *OFPXMT_OFB_TUNNEL_ID *it gives an error 'KeyError: 'unknown OXM
> field: OFPXMT_OFB_TUNNEL_ID''.
>
> port S1 connected to veth ports can receive non-gre packets(TCP etc) as
> well.
>
> Regards
> Bilal
>
>
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>
--
Yi Tseng (a.k.a Takeshi)
Taiwan National Chiao Tung University
Department of Computer Science
W2CNLab
https://takeshi.tw
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