[Nsi-wg] Issue 78 in ogf-nsi-project: Change activation state machine to the new DataPlaneStatus concept

[ogf-nsi-project at googlecode.com]

Status: Accepted
Owner: jmacau... at gmail.com
Labels: Type-Defect Priority-Medium FoundInVersion-2.0 FixedInVersion-2.0

New issue 78 by jmacau... at gmail.com: Change activation state machine to the  
new DataPlaneStatus concept
http://code.google.com/p/ogf-nsi-project/issues/detail?id=78

Description of Issue:
Data plane should be activated if the PSM is in “Provisioned” state AND  
start_time < current_time < end_time.

Activation is done at the timing of following events (if the above  
condition is met), using the latest reservation information:
- PSM transits to “Provisioned”
- At the start_time
- Reservation is updated (by commit of modify)
- Data plane is recovered from an error

Data plane activation/deactivation are notified by DataPlaneStateChange.nt  
notification messages.

Errors are notified by a generic error message

PA and aggregator has DataPlaneStatus information:
- (Boolean) Active: True if  data plane is active. For an aggregator, this  
flag is true when data plane is activated in all participating children
- (Int) Version:  For a uPA, current (latest) reservation version number.  
For an aggregator, the largest version number of the participating  
children. This field is valid when Active is true.
- (Boolean) VersionConsistent: Always true for uPA. For an aggregator, If  
version numbers of all children are the same, This flag is true. This field  
is valid when Active is true.

When a valid field of DataPlaneStatus is changed, DataPlaneStatusChange.nt  
is sent up.


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