[Nsi-wg] minutes for NSI VC 5 May

[Guy Roberts]

Hi All,

Please find the minutes for this week's NSI conference call here:

http://forge.gridforum.org/sf/go/doc15974?nav=1

A summary of agreed features for rel 1.0 advance reservation is attached below.

Guy


Issue


v1.0


status


Comments


Synchronization of Provider/requester timers?


Required


agreed


NTP should be ok, but not mandated


1 or 2 phase commit?


1PC


agreed


2PC is considered unnecessary for v1.0


Is automatic provisioning (initiated by timer) required?


Yes


agreed





Is explicit provisioning (initiated by requester message) required?


Yes


agreed


Is advance reservation required?


Yes


agreed





Is immediate reservation required?


Yes


agreed


May need to update architecture text


Allow ASAP as start-time for immediate reservation?


Yes


agreed





How is advance distinguished from immediate reservation?


Immediate uses 'ASAP' in the start-time field


agreed





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


In-service begin time


agreed


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


agreed


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


agreed


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


agreed





Is a tear-down signal required?


Yes


agreed


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


agreed


This is a constraint in path finding


Is a flag necessary to indicate immediate vs. advance reservation


No


agreed


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


agreed


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


agreed


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


Response sent once reservation process completed.


agreed





Notification of provisioning?


Notification of provisioning completion is required.


agreed






------------------------------------------------------------------------------------------------------------------
Guy  Roberts,  Ph.D

Network Engineering & Planning
DANTE - www.dante.net<http://www.dante.net/>
Tel: +44 (0)1223 371 316
City House, 126-130 Hills Road
Cambridge, CB2 1PQ, UK
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