Laxman,
do the packets you captured with wireshark have MPLS fields with zero
values or no MPLS label at all?
I have not worked myself with MPLS actions.
I am copying the openflow-discuss list to see if other users of
softswitch can help you better than myself.
-Christian
>
>> On Fri, Jun 28, 2013 at 9:26 AM, Laxman Vallandas
>> <laxman.vallan...@lntinfotech.com> wrote:
>>>
>>> Dear Esteve,
>>>
>>> Hope you are doing good.
>>>
>>> This is Laxman Vallandas and am working in L&T infotech, India.
>>>
>>> I have been part of developing MPLS related modules for various networking
>>> stacks.
>>> Currently, I came across openflow protocol which is really exiting. So, I
>>> just thought to check the functionality of MPLS using openflow.
>>> I downloaded your Nox and Switch code(openflow 1.3 version).
>>> Added some basic flow entries(switch functionality) via a handler created
>>> in nox_main and tested Ping functionality.
>>> controller
>>> | openflow entry
>>> Host1 --->Switch1--->Host2
>>>
>>> Similarly, added flow entry for MPLS push operation at switch1 as below:
>>> root@remote-desktop:/home/ofsoftswitch13/utilities# ./dpctl
>>> unix:/var/run/dp0 stats-flow
>>> SENDING:
>>> stat_req{type="flow", flags="0x0", table="all", oport="any", ogrp="any",
>>> cookie=0x0", mask=0x0", match=oxm{all match}}
>>>
>>> field->dl_type[0] dd86 ,(eth_type) 86dd
>>> Jun 28 17:08:19|00001|ofl_act_u|WARN|[laxman]Unpacking MPLS_ACTION_PUSH
>>> field->dl_type[0] dd86 ,(eth_type) 86dd
>>> RECEIVED:
>>> stat_repl{type="flow", flags="0x0", stats=[{table="0",
>>> match="oxm{eth_dst="00:1e:67:25:50:69", in_port="2", nw_dst_ipv6="2002::1",
>>> nw_src_ipv6="2002::2", eth_src="00:21:91:8b:86:41", eth_type="0x86dd"}",
>>> dur_s="4", dur_ns="539000", prio="32768", idle_to="10000", hard_to="0",
>>> cookie="0x0", pkt_cnt="5", byte_cnt="590",
>>> insts=[apply{acts=[set_field{field:[lax]mpls_label="512"},
>>> mpls_ttl{ttl="3"}, mpls_psh{eth="0x8847"}, out{port="1"}]}]}]}
>>>
>>> ====>If my understanding is correct, if switch receives a packet with all
>>> the above matching fields, set_field (mpls_label, outgoing label should be
>>> set to 512) and ttl value should be set to 3 and then perform push operation
>>> by modifying the ether type to 0x8847.
>>>
>>> But, in my case, though the match fields are getting satisfied, mpls
>>> related fields are not getting set. MPLS label is '0' and ttl is '0'
>>> (captured in wireshark).
>>>
>>> It would be a great help if you can help me in solving the above issue.
>>> Please let me know if you need any details or logs.
>>>
>>> Thank you in advance.
>>>
>>> Best Regards,
>>> Laxman Vallandas
>>>
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>>> recipients are prohibited from taking action on the basis of information in
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>>
>>
>>
>>
>> --
>> Christian Esteve Rothenberg, Ph.D.
>> Converged Networks Business Unit
>> CPqD - Center for Research and Development in Telecommunications
>> Tel. (+55 19) 3705 4479 / Cel. (+55 19) 8193-7087
>
>
>
> --
> Christian
--
Christian
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