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NSI sessions @OGF 39
by Guy Roberts 03 Sep '13

03 Sep '13

Hi All, For you information, the NSI sessions for Madrid have been scheduled from 9.30am to 5.30pm on Tuesday 17th September. The topic for these meetings will be a review of NSI CS v2.0. Guy

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Postdoc position at the SNE group, UvA
by Jeroen van der Ham 27 Aug '13

27 Aug '13

Hi all, At the SNE group we have an open position for a post-doc in the area of networking and topology description research. See also http://www.uva.nl/over-de-uva/werken-bij-de-uva/vacatures/item/13-267.html Note, the application deadline is September 6th. Jeroen.

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minutes from today's NSI conf call...
by Guy Roberts 21 Aug '13

21 Aug '13

... are available here: https://redmine.ogf.org/dmsf/nsi-wg?folder_id=6529 _____________________________________________________________________ Guy Roberts PhD Senior Transport Network Architect DANTE Cambridge, UK +44 1223 371316 DANTE is the project co-ordinator and operator of GÉANT, the high-speed pan-European research and education network that is transforming the way researchers collaborate. Learn more at: www.geant.net<http://www.geant.net/> Like us on: www.facebook.com/GEANTnetwork<http://www.facebook.com/GEANTnetwork> Follow us at: www.twitter.com/GEANTnews<http://www.twitter.com/GEANTnews> DANTE is the trading name of Delivery of Advanced Network Technology to Europe Limited registered in England & Wales. Registration Number 2806796. Registered Office - 9400 Garsington Road, Oxford Business Park, Oxford OX4 2HN. _____________________________________________________________________

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r98 issues
by John MacAuley 21 Aug '13

21 Aug '13

People, I was following the conversation on Skype. I definitely screwed up the schema namespace update as I forgot to change the soapAction field. The namspaces are correctly at "2013/07" but the soapAction is at "2013/04". soapAction="http://schemas.ogf.org/nsi/2013/04/connection/service/reserve" I will submit a fix for this. John

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Starting NSIv2 interop testing
by Gerben van Malenstein 20 Aug '13

20 Aug '13

Dear Automated GOLE and NSI WG people, I would like to kick-off interoperability testing between all software implementations containing the NSI Connection Service v2.0. Over the past week I've gathered most of the contact details of developers and I put all of them together in a Skype chat group, which will be used for communications between the developers during testing. Also a Google Docs-based folder is available. This contains the interoperability matrix, software and contact details and additional feature support information within a spreadsheet. If you want to be part of the Skype text group and/or the Google Docs folder, please reply to me directly via mail and I'll add you. Best regards, Gerben

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Fwd: [Policy-sig] NetCloud2013 Deadline EXTENDED 27 August 2013 - The 3rd workshop on Network Infrastructure Services as part of Cloud Computing, (NetCloud 2013) - 3-5 Dec 2013, Bristol, UK
by Yuri Demchenko 19 Aug '13

19 Aug '13

Dear Colleagues, This is invitation to submit a paper. The workshop is held the 3rd time and always provided a valuable contribution to the main conference CloudCom2013. This year organisers are PSNC, Uni Bristol, UvA and GN3plus project as a sponsor. Regards, Yuri Demchenko -------- Original Message -------- Subject: [Policy-sig] NetCloud2013 Deadline EXTENDED 27 August 2013 - The 3rd workshop on Network Infrastructure Services as part of Cloud Computing, (NetCloud 2013) - 3-5 Dec 2013, Bristol, UK Date: Mon, 19 Aug 2013 14:02:40 +0200 From: Yuri Demchenko <demch(a)chello.nl> To: <policy-sig(a)doc.ic.ac.uk> NetCloud2013 Workshop is collocated with the CloudCom2013 conference. Use this opportunity to meet European and worldwide cloud community. The 3rd workshop on Network Infrastructure Services as part of Cloud Computing (NetCloud 2013) http://monstera.man.poznan.pl/netcloud/netcloud2013.html In conjunction with the 5th IEEE International Conference on Cloud Computing Technology and Science (CloudCom2012) 3 – 5 December 2013, Bristol, UK Paper submission deadline - 27 August 2013 EXTENDED https://www.easychair.org/conferences/?conf=netcloud2013 Introduction The 2013 workshop is a follow-up of the successful workshop in 2011 and 2012, where a number of enthusiasts of cloud computing and future networking exchanged ideas and presented results of research projects dealing with clouds and network integration. The Cloud computing emerges as a new computing paradigm which aims to provide secure and reliable, on demand QoS guaranteed computing environments for the end-users. Cloud computing services usage in both academia and industry, changed the way of thinking on how users’ needs can be satisfied by computational infrastructures. However, with the increase of data transferred among different places, it became critical how to support distributed computing resources with advanced network infrastructure services. It is envisioned that network infrastructure services provisioned on-demand could be managed and reconfigured dynamically by Cloud operators and user applications to achieve optimal usage criteria. Such dynamic infrastructures reveal new aspects in network virtualization, service delivery automation and general infrastructure resources management that should be supported by well-defined information models and related middleware. New components of the required network infrastructure for Cloud services and applications should create an integrated self-management environment that can react to changes in workloads and other events with minimal human interference. Security issues should addressed as a part of the general service delivery framework/workflow and support both infrastructure provisioning process and secure virtualized services/infrastructures operation. The workshop will address issues of network virtualization to create an ecosystem for cloud computing applications. In particular, the workshop will discuss the progress of development of advanced tools and mechanisms for seamless and efficient integration of network and IT worlds, not well interconnected so far. The workshop will consist of a number of sessions, where recent results of on-going and just-finished research projects will be demonstrated. The workshop will present also some future research considerations on the future of cloud computing and networking and expose views from different perspectives: research projects and industry. The workshop will be followed by a panel discussion, to allow free exchange of thoughts and ideas between the workshop speakers and audience. Objective NetCloud 2013, collocated with IEEE CloudCom 2013, attempts to address the problem of how the underlying network infrastructure is capable of supporting advanced cloud computing cases. The workshop is intended to bring together network research community, commercial network operators and industry with the major cloud computing players, including IT specialists, researchers and commercial providers. Topics of Interest * Definition and architectures for the Network as a Service (NaaS) cloud service model and Cloud Carrier operational model * Intercloud and inter-datacenters Software Defined Networks (SDN) * Heterogeneous network architectures and frameworks for distributed and high performance computing * Cloud and Intercloud architecture frameworks and required on-demand network infrastructure provisioning * Unified and converged IT and optical resources description languages and frameworks for cloud oriented infrastructures * General Infrastructure services provisioning in clouds, new architecture developments, service delivery and on-demand provisioning frameworks * Isolation and flexibility of the cloud oriented virtualized optical networks * Network infrastructure optimization for intra- and inter-datacenter communication and resources virtualisation * Standardization of optical network service provisioning interfaces for cloud based platforms and services * Co-advertisement, co-planning, composition and co-provisioning of any type of optical network resource and IT services (i.e. connectivity + IT resources at the end-points coordinated in a single, optimal procedure) * Performance and reliability issues, Service Level Agreement and QoS guarantees in the network layer * Dynamically provisioned security infrastructure and its integration with provider and customer legacy services and service provisioning workflow, security policy definition, security context management * End-to-end techniques for autonomic management of cloud resources * Policy based infrastructure services management * Experimental platforms that support network management in cloud computing * Experimentation test-beds and measurement studies Call for papers: Papers describing original research on both theoretical and practical aspects of dynamic network services for cloud computing are solicited. Important Dates: Paper Submissions deadline: 27 August 2013 EXTENDED Notification: September 14, 2013 Camera-ready: September 28, 2013 Workshop dates (during CloudCom2013 Conference): 2-5 December 2013 Paper submission instructions Submission link: https://www.easychair.org/conferences/?conf=netcloud2013 This workshop will only accept for review original papers that have not been previously published. Papers should be formatted based on the IEEE Transactions journals and conferences style; maximum allowed camera-ready paper length is six (6) pages. Submissions must be in Adobe PDF format, including text, figures and references. Accepted papers will be published in the CloudCom2013 proceedings. For further information see IEEE CloudCom 2013 web page http://2013.cloudcom.org/. Review procedure All submitted paper will be reviewed by international program committee. Workshop Organizers The workshop is organized by the partners of the GEYSERS, the EC-funded FP7 project. * Bartosz Belter, Poznan Supercomputing and Networking Center, Poland bartosz.belter (at) man.poznan.pl * Dimitra Simeonidou, University of Bristol, UK Dimitra.Simeonidou (at) bristol.ac.uk * Yuri Demchenko, University of Amsterdam, The Netherlands, y.demchenko (at) uva.nl Additional information http://monstera.man.poznan.pl/netcloud/netcloud2013.html _______________________________________________ Policy-sig mailing list Policy-sig(a)imperial.ac.uk https://mailman.ic.ac.uk/mailman/listinfo/policy-sig

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Two small schema issues
by John MacAuley 16 Aug '13

16 Aug '13

Peoples, During coding I noticed a couple schema issues that will need to be addressed after the GLIF demo. I will submit an update for them, but please do not incorporate the update until after the demo. 1. Removal of ftypes namespace and import statement from ogf_nsi_services_p2p_v2_0.xsd as a hold over from when the STP definition was in the service schema. This is will be a backward compatible change and will not result in any impact to existing code. 2. The only dependency the ogf_nsi_services_types_v2_0.xsd has on the ftypes namespace is for the "TypeValuePairListType" as seen below in the labels definition. There can be build issues when importing the WSDL through jax-ws and the services through jaxb compilers. Conflicting package names can result if the default namespace is used during compile for the package names. To fix this issue I would like to remove use of the ftypes namespace in the services types by replacing labels within the STP definition with something local to the ogf_nsi_services_types_v2_0.xsd file.  <xsd:complexType name="StpType"> <xsd:annotation> <xsd:documentation xml:lang="en"> The Service Termination Point (STP) type used for path selection. Elements: networkId - A globally unique identifier (URN) that identifies the Network. Rather than forcing parsing of an STP to determine the Network, a separate Network object is defined to allow an intermediate NSA to forward the message to the target Network without needing to know about the STPs within that domain. localId - A locally unique identifier for the STP within the associated network. labels - Technology specific attributes associated with the Service Termination Point. </xsd:documentation> </xsd:annotation> <xsd:sequence> <xsd:element name="networkId" type="xsd:string" /> <xsd:element name="localId" type="xsd:string" /> <xsd:element name="labels" type="ftypes:TypeValuePairListType" minOccurs="0" /> </xsd:sequence> </xsd:complexType> Thanks, John

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Re: [Nsi-wg] Tutorial Topologies
by Freek Dijkstra 16 Aug '13

16 Aug '13

Hi Chin, Sorry for not responding sooner. Off-list, you brought up the following issue. I hope it is OK to quote you on-list. You brought up an important issue. >> Thanks for sending out the topologies. >> >> I tried importing them into the topology service that Ahmed >> implemented (at http://lstest.es.net) but ran a couple of issues, one >> small, and the other a bit more involved. >> [...] >> As for the more involved issue, our parser is unable to distinguish >> between what is a reference, and what is not, so for example: >> >> Excerpt from aruba.xml: >>  >> <nml:Relation type="http://schemas.ogf.org/nml/2013/05/base#hasOutboundPort"> >> <nml:PortGroup id="urn:ogf:network:aruba.example:2013:aruba-bonaire"> >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> <nml:LabelGroup labeltype="http://schemas.ogf.org/nml/2012/10/ethernet#vlan">1780-1783</nml:LabelGroup> >> <nml:Relation type="http://schemas.ogf.org/nml/2013/05/base#isAlias"> >> <nml:PortGroup id="urn:ogf:network:bonaire.example:2013:aruba-bonaire"/> >> </nml:Relation> >> </nml:PortGroup> >> </nml:Relation> >> >> Excerpt from bonaire.xml: >>  >> <nml:Relation type="http://schemas.ogf.org/nml/2013/05/base#hasInboundPort"> >> <nml:PortGroup id="urn:ogf:network:bonaire.example:2013:aruba-bonaire"> >> <nml:LabelGroup labeltype="http://schemas.ogf.org/nml/2012/10/ethernet#vlan">1780-1783</nml:LabelGroup> >> <nml:Relation type="http://schemas.ogf.org/nml/2013/05/base#isAlias"> >> <nml:PortGroup id="urn:ogf:network:aruba.example:2013:aruba-bonaire"/> >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> </nml:Relation> >> </nml:PortGroup> >> </nml:Relation> >> >> After we import the aruba.xml topology into the topology server, when >> we import bonaire.xml, our server doesn't know Bonaire's aliased >> "aruba-bonarie" port group is a reference, and overwrites Aruba's entry. This very issue is covered in section 4.3 of GFD.206. This is a verbatim quote of that section: > 4.3 Combining Object Descriptions > > A given object may have multiple attributes and relations. These > attributes and relations may be described in different places in a > syntax. It is up to the parser to combine all attributes and > relations. > > NML currently does not have a mechanism to check if a given > description of an object is complete. Thus, it does not distinguish > between a full description of an object or merely a pointer to an > object. > > Parsers should be aware that the NML descriptions do not provide any > guarantee regarding the integrity nor the authenticity of the > description. Parsers are advised to use external mechanism to avoid > that an erroneous description of an object in one (possibly > malicious) topology description pollutes a correct description of the > same object in another topology description. So basically, the idea is that the second (reference) description does not overwrite the original description, but augments it, combining the two. Either solution (replacing or augmenting a description) raises some security issues, in that an attacker may add false descriptions of STP, in order to insert malicious information in the topology. For that reason, it is highly recommended that NSI implementations take the source of information into account, and are very selective in accepting information from a domain, that describes information about another topology. I believe NSI has some mechanisms to In fact, the whole isAlias construct is made specifically to make it easier to reference between sources of information. So my recommendation is not to accept any information about a STP or Port, from another domain, except as the destination of an "isAlias" relation. >> I had a couple of thoughts on this, but they may be a complete hack >> and ugly. >> >> 1. If an "empty" element (that has no further nested elements, e.g. >> Bonaire's "aruba-bonarie" port group) matches an existing "non-empty" >> element (e.g. Aruba's "aruba-bonarie" port group), it is assumed to be >> a reference. This might make things like modify complicated, but >> maybe if we can make the assumption that only "non-empty" elements can >> modify existing elements, that might work. >> >> 2. Use the "isAlias" relation to assume referencing. This will only >> be specific to NML/NSI, but then it may be acceptable compromise. The second one is true for all relations: <nml:SomeObject id="A"> <nml:Relation type="http://....#someRelation"> <nml:OtherObject id="B"> In this case, A the _source_ and B is the _domain_ of the relation. B is always a reference. This object B can contain some more information, but I strongly recommend to be careful to accept any information from any source other than the domain. (judged by the nsi:managedBy relation from topology to NSA). Hope this helps! Freek -- SURFsara has a new telephone number: + 31 20 800 1300. Freek Dijkstra | Group Leader | Network Innovation & Support | SURFsara | | Science Park 140 | 1098 XG Amsterdam | +31 20 800 1320 | | Freek.Dijkstra(a)surfsara.nl | www.surfsara.nl | Available on Mon | Tue | Thu | Fri |

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Transition!
by Jeroen van der Ham 15 Aug '13

15 Aug '13

Hi all, After about 10 years of research in network topology descriptions and related areas, I feel it is time for some change :) As of September 1st I will be moving to a new job. But don't worry, I will not be going very far away: I will be moving to the education side and will be teaching at the System and Network Engineering Master at the UvA. In that position I will also have one day a week available for research, which at the start will be used to make sure that the transition goes as smoothly as possible. I will still be attending the GLIF and NSI meetings in Singapore, but after that it is far less likely I will be able to travel or contribute to meetings. It has really been a pleasure and privilege to work in these great communities and to have been able to (heatedly ;)) discuss ideas with international peers. You have all made me feel very welcome and every meeting of GLIF and OGF has always been a very enjoyable experience. I will certainly miss the friendly dinners in remote locations :). Some of my responsibilities will be taken over by Paola Grosso while the research group looks for a new post-doc. If you have any questions, feel free to contact me. Thank you all, Jeroen van der Ham.

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NSI-WG meeting Wed 8/14 Topology service presentation slides
by Chin Guok 15 Aug '13

15 Aug '13

Hi all, I apologize for not sending this out sooner, but here are the slides from today's NSI-WG topology service presentation. - Chin

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