No I don't want to wildcard whole range of a field, but just a part of
its range.
On 8/10/2011 12:00 PM, James McCauley wrote:
set_match should wildcard anything that is missing, so just don't
specify them.
-- Murphy
On Aug 10, 2011 10:57 AM, "Masoud Moshref Javadi" <moshr...@usc.edu
<mailto:moshr...@usc.edu>> wrote:
> Thank you for your great answer.
> So it seems that ranges are only supported in network addresses. For IP
> fields, should I set NW_SRC_N_WILD and NW_DST_N_WILD fields in the
> passed dictionary? set_match uses these fields but it is not mentioned
> above install_datapath_flow method
>
> On 8/10/2011 6:24 AM, Murphy McCauley wrote:
>> Ranges for port numbers are not an OpenFlow feature (at least not
in 1.0), so the short answer is that doing this is impossible.
>>
>> I don't think anything to do with set_match() will help you, since
set_match() just builds an OpenFlow match structure (and, again, port
range matches are not an OpenFlow 1.0 feature).
>>
>> The longer answer is that you can install individual rules that
exactly match port numbers. If you were interested in, say, five
particular ports, installing five flows proactively with those five
port numbers is probably a fine solution. But installing 1024 flows is
probably not a good idea. A reactive approach scales better (at the
cost of flow setup latency which includes a round trip from the switch
to the controller) -- install a flow that matches on everything you're
interested in *except* port number, wildcard the port number, and give
it a send-to-controller action. When a packet hits this rule, it'll
get sent to the controller, and you can install a new rule with a
higher priority that exactly matches the port number used by that flow.
>>
>> Hope that helps.
>>
>> -- Murphy
>>
>> On Aug 10, 2011, at 6:03 AM, Masoud Moshref Javadi wrote:
>>
>>> How can we set rules with wildcards that do not cover all of the
range. For example, I want to set a rule that match destination port
numbers from 1 to 1024 or any other arbitrary ranges. Should I
replicate what set_match method does?
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