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
Tel: +44 (0)1223 371 316
City House, 126-130
Hills Road
Cambridge, CB2 1PQ,
UK
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