Changes between Version 34 and Version 35 of Gec7InstMeasWGAgenda


Ignore:
Timestamp:
03/24/10 17:01:18 (10 years ago)
Author:
hmussman@bbn.com
Comment:

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  • Gec7InstMeasWGAgenda

    v34 v35  
    141141[http://groups.geni.net/geni/attachment/wiki/Gec7InstMeasWGAgenda/fernandes%20%20swany%20%20GEC7-LAMP.ppt  Overview, explanation of demo, review of GENI I&M architecture topics] [[BR]]
    142142 
     143+  perfSONAR is a multi-domain performance monitoring framework, which defines a set of protocol standards for sharing data between measurement and monitoring systems [[BR]]
     144
     145Architecture: [[BR]]
     146+  Interoperable network measurement middleware designed as a Service Oriented Architecture (SOA): [[BR]]
     147-  Components are Web Services (WS) based [[BR]]
     148+  Several unique components and design considerations, all of which operate in a cooperative yet independent manner [[BR]]
     149-  Each functionality is separated into a specific function [[BR]]
     150-  Clients and servers interact through scripted, XML Based protocols [[BR]]
     151-  Measurement data is encoded in expressive XML formats [[BR]]
     152
     153Components: [[BR]]
     154+  Infrastructure [[BR]]
     155-  Lookup Service [[BR]]
     156-  Topology Service [[BR]]
     157-  Authentication Service [[BR]]
     158+  Services [[BR]]
     159-  Measurement Point (MP) Service [[BR]]
     160-  Measurement Archive (MA) Service [[BR]]
     161-  Resource protector [[BR]]
     162+  Analysis and visualization [[BR]]
     163
     164Open protocols and schema: [[BR]]
     165+  Base network measurement schema[[BR]]
     166-  OGF Network Measurement Working Group[[BR]]
     167+  Topology Schema[[BR]]
     168-  OGF Network Markup Language (NML-)WG[[BR]]
     169-  Includes Topology Network ID[[BR]]
     170+  perfSONAR Protocol Documents[[BR]]
     171-  OGF Network Measurement and Control (NMC-)WG[[BR]]
     172
     173Base network measurement schema:[[BR]]
     174+  Measurement Data, a set of measurement events that have some value or values at a particular time[[BR]]
     175+  Measurement Metadata, the details about the set of measurement data[[BR]]
     176
     177Measurement metadata:[[BR]]
     178+  Subject (Noun)[[BR]]
     179-  The measured/tested entity (who)[[BR]]
     180-  E.g. A pair of hosts (end-point-pair), or a Layer 3 interface[[BR]]
     181+  EventType (Verb)[[BR]]
     182-  What type of measurement, value, or event occurred[[BR]]
     183-  Characteristic, tool output, or generic event[[BR]]
     184-  E.g. latency, bandwidth, utilization, or simply iperf[[BR]]
     185+  Parameters (Adjectives and Adverbs)[[BR]]
     186-  How, or under what conditions, did this event occur?[[BR]]
     187-  E.g. buffer sizes used, TCP vs ICMP packets[[BR]]
     188+  Key[[BR]]
     189-  Shortcut substituted in place of previous three items[[BR]]
     190-  No predefined format[[BR]]
     191
     192Measurement data:
     193+  Datum: The actual result (values) of measurement. [[BR]]
     194-  Can contain time (e.g. a Time element or attribute).[[BR]]
     195-  Existence of an event might point to the case where there no additional value[[BR]]
     196-  As in “Link up/down” or threshold events[[BR]]
     197+  Time: Representation of a time stamp or time range in a specified format.[[BR]]
     198-  Must be extensible since even agreement about the right structure is not easy, e.g. UNIX timestamp vs NTP time[[BR]]
     199
     200
     201Schema namespaces and extensibility:[[BR]]
     202+  A namespace: http://ggf.org/ns/nmwg/base/2.0/[[BR]]
     203-  MAY NOT be a URL[[BR]]
     204+  We encode the measurement/event type in the namespace (and as a standalone element)[[BR]]
     205+  We use Data and Metadata elements and vary the namespaces of the specific elements[[BR]]
     206+  Extensibility achieved through hierarchy with delegation[[BR]]
     207-  Similar to OIDs in the IETF management world[[BR]]
     208+  The NM-WG has a hierarchy of network characteristics[[BR]]
     209-  Good starting point[[BR]]
     210-  E.g. http://ggf.org/ns/nmwg/characteristic/utilization/2.0[[BR]]
     211-  E.g. http://ggf.org/ns/nmwg/characteristic/bandwidth/achievable/2.0[[BR]]
     212+  However, not all tools are cleanly mapped onto the Characteristic space[[BR]]
     213-  Often a matter of some debate[[BR]]
     214+  Organization-rooted tools namespace addresses this[[BR]]
     215-  Easy to add new tools in organization-specific namespaces[[BR]]
     216-  E.g. http://ggf.org/ns/nmwg/tools/nuttcp/2.0[[BR]]
     217
     218
     219Topology Schema:  [[BR]]
     220+  Topology schema grew from network measurement description [[BR]]
     221-  Reusable “Subject” elements for common cases [[BR]]
     222-  Also reduces redundancy  [[BR]]
     223-  Relationships between measurement Subjects [[BR]]
     224+  Structured by layers and the same elements recurring there (Base, L2, L3, L4) [[BR]]
     225-  networks as graphs[[BR]]
     226+  Elements:[[BR]]
     227-  Domain[[BR]]
     228-  Node[[BR]]
     229-  Port[[BR]]
     230-  Link[[BR]]
     231-  Network[[BR]]
     232-  Path[[BR]]
     233-  Service[[BR]]
     234+  Varied by namespaces (extensibility)[[BR]]
     235-  Reuse visualization logic, etc.[[BR]]
     236-  Validate layer- or technology-specific attributes[[BR]]
     237+  Used by perfSONAR, IDC Protocol (ION, OSCARS, AutoBAHN), Phoebus[[BR]]
     238-  Currently calling it the UNIS Topology Schema [[BR]]
     239+  OGF NML-WG to unify NDL and UNIS Topology schema[[BR]]
     240-  Happening as we speak at OGF28[[BR]]
     241
     242LAMP objectives:[[BR]]
     243+  Collaborate on defining a common but extensible format for data storage and exchange for GENI I&M systems[[BR]]
     244-  Use perfSONAR NM-WG schema as starting point[[BR]]
     245-  Identify new characteristics/tools namespaces[[BR]]
     246+  Develop a representation of GENI topology to be used to describe measurements and experiment configuration[[BR]]
     247-  UNIS topology schema can be easily extended [[BR]]
     248+  Collaborate with related GENI measurement and security projects on a common GENI I&M architecture[[BR]]
     249-  The new GENI I&M Arch. Draft defines very similar services (MP, MC, MDA, MAP), and new ones (MO)[[BR]]
     250-  perfSONAR is a good starting point, not currently a final solution (for GENI); [[BR]]
     251-  Use cases have been different, but much can be reused and the framework can be extended[[BR]]
     252
     253
    1432544:35pm  Brad Huffaker  (CAIDA, UC San Diego Supercomputing Center) [[BR]]
    144255DatCat Project  (15min)  [[BR]]