[Nsi-wg] NSI advance reservation parameters

[Guy Roberts]

To help along the discussion on advance reservation I include a list of decision previously made by the group...

Guy


Issue

v1.0

Comments

1 or 2 phase commit?

1PC

2PC is considered unnecessary for v1.0

Is automatic provisioning (initiated by timer) required?

Yes



Is explicit provisioning (initiated by requester message) required?

Yes

Is advance reservation required?

Yes



Is immediate reservation required?

Yes

May need to update architecture text

Allow ASAP as start-time for immediate reservation?

Yes



How is advance distinguished from immediate reservation?

Immediate uses 'ASAP' in the start-time field



What does start-time mean as used in protocol for auto mode?

In-service begin time

It is the responsibility of the provider NSA to make sure that this in-service start time is met

What does start-time mean as used in protocol for explicit mode?

Time at which the provider is able to accept a provision signal

It is now the requestor's responsibility to advance the explicit signal to ensure good in-service time.

What does end-time mean as used in protocol for explicit mode?

End of reservation

What does end-time mean as used in protocol for advance reservation?

In-service end time.  This is the same as beginning of de-provisioning time



Is a tear-down signal required?

Yes

Is connection duration required?

May be required for ASAP start time

Duration would replace end time.

Is unspecified end-time allowed?

No agreement on this point

Provider validation of start time ?

Validated

This is a constraint in path finding

Is a flag necessary to indicate immediate vs. advance reservation

No

Not necessary, immediate is indicated with 'ASAP' start-time.  See flag below.

Is a flag needed to indicate whether start-time later than specified guard is allowed?

Yes

These start times are treated as 'now' and warning may be sent back to the Requester NSA.

Does each Connection request need a flag to indicate how to expect provisioning to be initiated?

Yes, flag indicating provisioning method is required

Does a reservation request require a pass/fail response from the Provider NSA?

Response sent once reservation process completed.



Notification of provisioning?

Notification of provisioning completion is required.




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