Thnaks Masa! Now i have a clearer picture for what i am doing. I have add flow
to the wrong port, that's why i cannot ping the host. I have 1 more question.
How can i delete the flow i added previously?? Thank you!
Hi Swan, looking forward to hear your answer. =) Thanks!
________________________________
From: Masayoshi Kobayashi <mkoba...@stanford.edu>
To: Rebecca Last Name <rebecca_chan...@yahoo.com>
Cc: "openflow-discuss@lists.stanford.edu" <openflow-discuss@lists.stanford.edu>
Sent: Thursday, 17 May 2012 10:56 AM
Subject: Re: [openflow-discuss] How to add flow correctly?
Hi Rebecca,
The 2nd add-flow command does not make sense to me (both incoming port and
outgoing port are port 2).
From the 1st add-flow command, I assume your hosts are attached to port 1 and
port 3 (nf2c0 and nf2c2).
If so, the 2nd add-flow command should be:
dpctl add-flow unix:/var/run/dp0 in_port=3,actions=output:1
(you don't need to specify "*" for wildcarding fields).
> Another question is, do in_port=3 refers to nf2c3? what is output:1 and
> output:2?
If you create openflow datapath by
> ./openflow/udatapath/ofdatapath --detach punix:/var/run/dp0 -d 004E46324304
> -i nf2c0,nf2c1,nf2c2,nf2c3
then nf2c0, nf2c1, nf2c2, nf2c3 are referred as port 1, 2, 3, 4 in dpctl (and
OpenFlow protocol), respectively.
For example, a command `dpctl add-flow unix:/var/run/dp0
in_port=3,actions=output:1` installs a flow entry
that forwards all the packets arriving port nf2c2 to port nf2c0.
Hope this helps.
- Masa
On May 16, 2012, at 7:23 PM, Rebecca Last Name wrote:
> Hi everyone.
>
> I'm having difficulties to add flow to the switch.
>
> I assigned the datapath-id using the command below: (obtain from:
> http://yuba.stanford.edu/foswiki/bin/view/OpenFlow/Deployment/HOWTO/LabSetup#3_2_Setup_OpenFlow_Switch_on_Net)
> ./openflow/udatapath/ofdatapath --detach punix:/var/run/dp0 -d 004E46324304
> -i nf2c0,nf2c1,nf2c2,nf2c3
>
> I'm using POX controller and the switch can communicate with the controller.
> But i'm having problem to ping the 2 computer hosts.
> I added the flow using :
> dpctl add-flow unix:/var/run/dp0
> in_port=3,dl_vlan=*,dl_src=*,dl_dst=*,dl_type=*,nw_src=*,nw_dst=*,nw_proto=*,tp_src=*,tp_dst=*,icmp_type=*,icmp_code=*,actions=output:1
> dpctl add-flow unix:/var/run/dp0
> in_port=2,dl_vlan=*,dl_src=*,dl_dst=*,dl_type=*,nw_src=*,nw_dst=*,nw_proto=*,tp_src=*,tp_dst=*,icmp_type=*,icmp_code=*,actions=output:2
>
> Then, I dpctl dump-flows unix:/var/run/dp0
> The result is
> stats_reply (xid=0xff3765f9): flags=none type=1(flow)
> cookie=0, duration_sec=16s, duration_nsec=911000000s, table_id=1,
>priority=32768, n_packets=0, n_bytes=0,
>idle_timeout=60,hard_timeout=0,in_port=3,actions=output:1
>
> Actually i do not understand the meaning of those arguments inside the
> add-flow command. Can someone please explain to me? After i added the flow,
> my computer hosts still cannot ping each other. Do i add flow correctly?
>
> Another question is, do in_port=3 refers to nf2c3? what is output:1 and
> output:2?
> Hope to hear from you all soon. Thank you very much!
> _______________________________________________
> openflow-discuss mailing list
> openflow-discuss@lists.stanford.edu
> https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
- Masa
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