[Nsi-wg] NSI advance reservation parameters
Guy Roberts
Guy.Roberts at dante.net
Wed Sep 22 11:03:29 CDT 2010
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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