[ovs-discuss] How to properly forward certain protocols to a port?

[Jesse Gross]

What do you see if you run ovs-dpctl dump-flows while this is running?

On Mon, Jul 29, 2013 at 7:40 AM, Can Zhang <can at canx.me> wrote:
> I think I've replied but actually it's in the draft box. Sorry for the
> delay.
>
> I captured packets on both interface using wireshark and as I described in
> the first mail, I can see ARP request at eth0 but not tap0.
>
> And now I'm considering using a veth pair, say veth0 and veth1. Attach veth0
> to an ovs and configure an IP address on veth1. As:
>
> peer packets --- eth0 ---- ovs ---- veth0 --- veth1(with IP address)
>
> The flows installed are similar as before. So the peer could establish TCP
> connections with my machine via veth1's IP address. What do you think of it?
>
>
> 2013/7/25 Jesse Gross <jesse at nicira.com>
>>
>> And you ran tcpdump on both ports and you see packets on one but not the
>> other?
>>
>> On Wed, Jul 24, 2013 at 5:54 AM, Can Zhang <can at canx.me> wrote:
>> > NXST_FLOW reply (xid=0x4):
>> >  cookie=0x0, duration=2938.314s, table=0, n_packets=0, n_bytes=0,
>> > idle_age=2938, in_port=1 actions=output:2
>> >  cookie=0x0, duration=2943.819s, table=0, n_packets=130, n_bytes=20082,
>> > idle_age=11, in_port=2 actions=output:1
>> >
>> >
>> > Just forward all flow from 1 to 2 and 2 to 1.
>> >
>> >
>> > 2013/7/24 Jesse Gross <jesse at nicira.com>
>> >>
>> >> On Tue, Jul 23, 2013 at 7:11 AM, Can Zhang <can at canx.me> wrote:
>> >> > Hello,
>> >> >
>> >> > Firstly I'll describe a simple scenario I tried:
>> >> >
>> >> > peer packets --- eth0 ---- ovs ---- tap0
>> >> >
>> >> > I configured tap0 with IP 192.168.57.100, two flows to forward
>> >> > packets
>> >> > from eth0 and tap0 to the other side, and pinged from outside to the
>> >> > IP. I
>> >> > did capture ARP request on eth0 using wireshark, but could not see
>> >> > any
>> >> > packets on tap0. It seems that after attach a port to ovs, the IP
>> >> > address is
>> >> > no longer effective.
>> >> >
>> >> > My goal is to use a machine installed with ovs as a openflow switch
>> >> > but
>> >> > it can also handle some packets(say, a normal socket server can still
>> >> > work).
>> >> > So I'm thinking of extract some packets to tap0 and make the server
>> >> > listen
>> >> > on it. But the experiments I did failed as above. I have no idea what
>> >> > to try
>> >> > next so I come to see if somebody could give me some suggestions.
>> >>
>> >> What do the flows that you installed look like? At the Open vSwitch
>> >> level, IP addresses on the interfaces do not matter.
>> >
>> >
>> >
>> >
>> > --
>> > Best regards,
>> > Can Zhang
>
>
>
>
> --
> Best regards,
> Can Zhang
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