Hi,
I have some ambiguities in understanding the OpenFlowSpec-v1.1.0 document.
Can you please help me in clarifying the things
1. In section 4.6, the document writes
* "Applies the speci c action(s) immediately, without any change to the
Action Set. This
instruction may be used to modify the packet between two tables or to
execute
multiple actions of the same type. The actions are speci ed as an
action list (see 4.8)"*
2. Then it writes in section 4.8 that
* "The Apply-Actions instruction and the Packet-out message include an
action list"
*Up till now all seems right. I am considering that action list is stored
along with *Apply-Actions *instruction in flow table. And whenever a flow
matches, the switch applies all actions associated with the Apply-Actions
instruction. Similarly, in case of Packet-out message, the controller send
the action list along with message.
*Ambiguities:*
1. My question is that is *only* the *Apply-Actions instruction* and
the*Packet-out message
* include an action list. What about the *'Clear-action*' and *Write-action
*instructions? If these later
instructions does not contain any action list, then which action-list
is cleared by 'Clear-action'. Where that action list is stored.
2. In section 4.7, the document says that
* "An action set is associated with each packet"*
What does it mean? How action set can be associated with each packet.
3. What is the difference between 'Action list' & 'Action set'?
Regards
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