- Nsi-wg - lists.ogf.org

NSI reservation scenario with states
by Radek Krzywania 26 Jan '11

26 Jan '11

Hi all, As promised during recent call, in the attachment you will find first draft of what I meant. A simple reservation starting at particular time and ending at particular time, without failure conditions and "freezing" the reservation. Several comments to state diagram: - there is no such thing as Terminated state. Terminating IMHO is something similar, yet the name is ambiguous as it reflect something is being done with the reservation, while it's already finished. - Idle state is same as scheduled IMHO. Can't see practical difference. In both states resources are there, can't be used by anyone else. Yet they are not configured in the network. I assume idle implementation may differ for various providers (i.e. in some cases idle = provisioned, or idle = scheduled/auto start). In case idle=scheduled, then RA_Cancel does not need to go through Cancelling state (as there are no resources really committed in the network, just promised in the NSI agents). - in the tables describing actions in particular states, if message is sent I would indicate not only to whom, but also who is the sender. It is ambiguous for me in some cases, especially that I can't guess if one RA sends something to PA in the same or different domain. Also we are missing a communication between PA and RA for the same domain. Even if that's out of out protocol, there are some pre-defined actions which we expect to be done. Comments to attached scenario: - The states for first RA are ambiguous. As first RA does not have a domain below to control (it just request resources), it does not have simply defined reservation state, as this is global state. In AutoBAHN we have a global state as a sum of all states in particular domains (e.g. global state for 4 domains may be like Provisioning;Provisioning;In-Service;In-Service). I've placed them just single state just to show what is expected global state of reservation, but that require a discussion to decide how to deal with that. - There provisioning itself is not reflected in the diagram for two reasons - we did not defined steps to do so, and is unimportant from states point of view. - I am missing some kind of message to confirm reservation termination at the end. There is Cancel sent at the end, but to who and when? It seems it does not change any state anyway (missing state?). I did not put that on the diagram. I made the diagram as readable as I could for now. I can't find a better form now, but I am open for suggestions. I am waiting for comments and discussion ;) Also I would be glad if I could get some help with NSI message names to be in compliance with other NSI documents. Since we clarify this diagram I can make some for failure scenarios or some more complex ones. Best regards Radek ________________________________________________________________________ Radoslaw Krzywania Network Research and Development Poznan Supercomputing and radek.krzywania(a)man.poznan.pl Networking Center +48 61 850 25 26 http://www.man.poznan.pl ________________________________________________________________________

2 2

Ad Hoc NSI meeting in Hong Kong
by Guy Roberts 24 Jan '11

24 Jan '11

Hello All, There will be an Ad Hoc NSI meeting in Hong Kong to coincide with APAN/GLIF on Wednesday Feb 23 and Thursday Feb 24. This meeting will be an NSI working meeting to review and progress the NSI Connection Service architecture and protocol. An agenda for this meeting will follow shortly. In addition there will be a reduced NSI meeting in OGF31. This will focus on presenting the draft NSI architecture and protocol to the OGF community. If you wish to attend the Ad Hoc NSI meeting, please register for APRICOT-APAN 2011 and pay via the conference website<http://www.apricot-apan.asia/register/> and register and for GLIF register here<http://www.terena.org/events/details.php?event_id=1912>. (We would like everyone to register for GLIF just to get a count for our preparation, there is not an additional payment for GLIF if you register for APAN). Regards, Guy Roberts _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

2 1

Minutes from Wednesday's NSI conf call
by Guy Roberts 20 Jan '11

20 Jan '11

The minutes from Wednesday's NSI conf call are available here: http://forge.gridforum.org/sf/go/doc16180?nav=1 Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

1 0

document for today's NSI call
by Guy Roberts 19 Jan '11

19 Jan '11

Hello All, The latest version of the NSI Protocol State Machine (courtesy of Artur) for today's discussion can be found here: http://forge.gridforum.org/sf/go/doc16174?nav=1 Note the updated SM diagram. Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

1 0

tomorrow's NSI conf call
by Guy Roberts 19 Jan '11

19 Jan '11

Hi all, The following is dial-in information for Wednesday's NSI call, time: 7:00 PDT 10:00 EDT, 15:00 GMT, 16:00 CET, 24:00 JST 1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada) 2. International participants dial: Toll Number: 303-248-0285 Or International Toll-Free Number: http://www.readytalk.com/intl 3. Enter 7-digit access code 8937606, followed by "#" Agenda: Ongoing NSI protocol and state machine discussion. Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

3 3

meetings at OGF31
by Guy Roberts 13 Jan '11

13 Jan '11

Hello All, You will recall that in OGF30 we set ourselves the goal of creating a draft NSI protocol document by OGF31, this work is progressing. I have scheduled 2 NSI sessions at OGF31 to allow us to report on (and discuss if necessary) the status this draft NSI protocol. Since many NSI participants would like to attend both OGF31 in March and the APAN/GLIF meeting in February, it has been requested that we come up with a method to reduce the travel to Asia for these European and US participants. To this end it has been proposed that we hold an interim NSI working meeting at APAN/GLIF, this will provide an opportunity for people unable to attend OGF31 to continue contributing to the progress the NSI protocol. We will still be holding NSI sessions at OGF31, but these will be more focused on presenting the NSI protocol results to the OGF community. Please feel free send me any feedback on this proposal. Regards, Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

1 0

Minutes from today's NSI call
by Guy Roberts 13 Jan '11

13 Jan '11

The minutes from today's NSI conf call are available here: http://forge.gridforum.org/sf/go/doc16178?nav=1 Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

1 0

(no subject)
by Guy Roberts 12 Jan '11

12 Jan '11

Hi all, The following is dial-in information for Wednesday's NSI call, time: 7:00 PDT 10:00 EDT, 15:00 GMT, 16:00 CET, 24:00 JST 1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada) 2. International participants dial: Toll Number: 303-248-0285 Or International Toll-Free Number: http://www.readytalk.com/intl 3. Enter 7-digit access code 8937606, followed by "#" Agenda: Ongoing NSI protocol and state machine discussion. Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

3 3

Recall:
by Guy Roberts 11 Jan '11

11 Jan '11

Guy Roberts would like to recall the message, "".

1 0

minutes from today's NSI call
by Guy Roberts 06 Jan '11

06 Jan '11

... are available here: http://forge.gridforum.org/sf/go/doc16175?nav=1 Guy _____________________________________________________________________ ** Guy Roberts, PhD Network Engineering & Planning * * Tel: +44 (0)1223 371300 * * City House Direct: +44 (0)1223 371316 * 126-130 Hills Road Fax: +44 (0)1223 371371 * Cambridge * CB2 1PQ E-mail: guy.roberts(a)dante.net<mailto:guy.roberts@dante.org.uk> D A N T E United Kingdom WWW: http://www.dante.net _____________________________________________________________________

2 1