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The NOX Controller
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How to set priority on flow rules? #35

Closed Jordan-Queiroz closed 6 years ago

Jordan-Queiroz commented 10 years ago

Hi, folks. I'm trying to set up a priority level on a flow rule, but the solution I have tried didn't work. There is a piece of code where it is possible to change the priority level (at least I think):

priority

I'm trying to edit this field (the blue-marked one) because according with I've searched, a priority level of a flow rule affects the order where the match is done in the flowtable. The problem is whenever I try to change the priority's level (by editing this blue-marked-field), nothing happens (it is possible to realize it using dpctl). According with NOX's documentation in doxygen (http://www.noxrepo.org/_/nox-doxygen/openflow-defs-1_80_8hh_source.html) there is only DEFAULT_PRIORITY, which its value is set in hexadecimal. So I have tried to set other values (lower values) in hexadecimal (LOW_PRIORITY's value is 0x7000 and the DEFAULT_PRIORITY's value is 0x8000), but whenever I check the priority's level in dpctl, it always shows me priority's level in 65535

Does anyone have a solution to solve it?? Thanks in advance.

MurphyMc commented 10 years ago

Exact matches always have high priority (at least in OpenFlow 1.0).

Jordan-Queiroz commented 10 years ago

In this case, how do I do to make a match be inexact? I really need to modify the flow rule's priority level. Is there any way to do it??