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Policy Terminology - 01 Report for 49th IETF

This report aims to document policy concepts in various IETF working groups and drafts, bridge gaps and differences, and serve as a resource for defining and constraining policy-related terms.

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Policy Terminology - 01 Report for 49th IETF

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  1. Policy Terminology - 01Report for 49th IETF Andrea Westerinen

  2. PolTerm Goals • Goal – Unchanged from Version “00” • Documentation only, No “creativity” • Definition of policy concepts in various IETF WGs and drafts • Bridging gaps and differences where possible • Usage of the draft • As a reference list of words • As a resource defining terms related to policy • As a resource to constrain what terms mean and avoid overloading

  3. Approach • 51 “defined” terms • 31 acronyms and synonyms • Determined based on current IETF RFCs and I-Dss (Policy, DiffServ, COPS, AAA, IPsec, MPLS, …) • In the process of creating a cross-reference table of terms and drafts • URL link from the IETF Policy page

  4. Organization of the Document • Based on RFC2828 (Internet Security Glossary) • All terms and their acronyms listed in alphabetical order • Terms characterized as: • (P) policy related • (T) techniques in a policy implementation (for example, COPS, PIB or DEN) • (A) area of use for policy (for example, DiffServ) • Alternate or more specific definitions expressed using indentation

  5. Changes from “00” • Changed classification slightly • (M) Mechanisms changed to (T) Techniques to avoid confusion related to protocol and service “mechanisms” • Revised Terms • Policy Rule Class to Provisioning Class • New Terms • Policy Core Info Model, Policy MIB, Policy mapping, Provisioning Instance • Deleted Terms • IPSP (Should only list WGs but “areas of work”), PRP (AAA draft expired and the term is no longer referenced in an I-D)

  6. Changes from “00” • Updated definitions • Based on comments from SNMPConf – Role and role combination (alignment of terms), Configuration (addition of “factory” config), Policy Abstraction (Specific works may define explicit abstraction levels) • From PolTerm editors – COPS (acronym incorrect), AAA (text obsolete regarding protocols), Policy goal (more general wording) • From Juergen Schoenwaelder – CIM (clarification and expanded definition), MPLS (label swapping and switching), Policy translation (“translation” and “abstraction” often blurred in implementation)

  7. Current Issues • Filter • Additional wording (underlined) to clarify and support more than packet filtering … • “A set of terms and/or criteria used for the purpose of separating or categorizing. This is accomplished via single- or multi-field matching of traffic header and/or payload data. "Filters" are often manipulated and used in network operation and policy. • Packet filtering becomes an example (versus a new paragraph) … “For example, packet filters specify the criteria for matching a pattern (for example, IP or 802 criteria) to distinguish separable classes of traffic.”

  8. Current Issues • SLA • Need reference to RFC2475 • Definition is currently aligned with RFC2475, but has “broader context” indicated by the DiffServ “Terms” I-D

  9. Recommendations • No other documented issues or concerns • Recommend making changes of the previous 2 pages and issuing “last call” • Need to remove references to I-Ds now that alignment is achieved • Carry this info in table of cross-references linked from Policy Framework web page

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