1 / 10

SDN Layers and Architecture Terminology draft-haleplidis-sdnrg-layer-terminology -06

SDN Layers and Architecture Terminology draft-haleplidis-sdnrg-layer-terminology -06. Evangelos Haleplidis, Ed. (ehalep@ece.upatras.gr) Kostas Pentikousis, Ed. (k.pentikousis@eict.de) Spyros Denazis (sdena@upatras.gr) Jamal Hadi Salim (hadi@mojatatu.com) David Meyer (dmm@1-4-5.net )

tod
Download Presentation

SDN Layers and Architecture Terminology draft-haleplidis-sdnrg-layer-terminology -06

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SDN Layers and Architecture Terminologydraft-haleplidis-sdnrg-layer-terminology-06 Evangelos Haleplidis, Ed. (ehalep@ece.upatras.gr) Kostas Pentikousis, Ed. (k.pentikousis@eict.de) Spyros Denazis (sdena@upatras.gr) Jamal Hadi Salim (hadi@mojatatu.com) David Meyer (dmm@1-4-5.net) Odysseas Koufopavlou (odysseas@ece.upatras.gr) IETF 90, Toronto, Canada Thursday 24 July 2014

  2. Changes since London (-04) • 2 updates since IETF 89 • Added to peer-review literature • Additional survey papers • RINA architecture • CAP theorem • Addressed comments received by email and during the IETF 89 SDNRG meeting • Mailing list discussion re: control vs management • Included coverage of • SNMP • PCEP

  3. SDN Layers Model (-06) Application Plane Service App Network Service Abstraction Layer (NSAL) Service Interface Control Plane Management Plane . Service App App Service Control Abstraction Layer (CAL) Management Abstraction Layer (MAL) CP Southbound Interface MP Southbound Interface Network Device Device and Resource Abstraction Layer (DAL) App Forwarding Plane Operational Plane

  4. Control vs Management (1) • Discussion on what is “control” and what is “management” • Valuable to make design choices • Management is part of SDN • Need to distinguish characteristics of interfaces • Based on the SDNRG meeting and mailing list discussion a set of key characteristics to distinguish between the two was added • Thanks for the contributions!

  5. Control vs Management (2) • Timescale • Control reacts very fast • Management usually slow(er) • Persistence • Control associated with ephemeral state • Management associated with persistent state • Locality • Control usually distributed, located near the network device • Management traditionally centralized

  6. Control vs Management (3) • CAP Theorem • Control Plane usually local and fast (available) • Management plane usually centralized (consistent) • Tool for analyzing design choices on control vs management • Example: Centralizing a controller increases consistency but keep in mind the availability tradeoff • Any further comments on this?

  7. Operational “Plane” • Comments on whether the operational plane is a “plane” on par with the others (e.g. the management one) • Editorial approach to avoid impasse • Draft opts to define it as “operational plane” on par with the others • But, we clearly document that some folks in SDNRG do not consider it a “plane” • Plane: Distinction between different areas of operations

  8. NFV Discussion • Recall discussion at IETF 89 • Attempt to describe how NFV relates to SDN • NFV uses management plane interfaces to instruct the operational plane to: • Reserve resources • Instantiate operational/functional virtual resource(s) on top of physical resources • Resources can then be abstracted by DAL (document makes no differentiation between physical and virtual)

  9. Points not Addressed • Work on other SDO activities • Opted not to include significantly more text. • A wiki page may be more suitable • Research issues: • Out of scope of this document • Scholarly papers already cover this topic (salient ones cited in the draft) • SDNRG wiki page is more suitable • Matrix of SDN projects vs model: • Again, a wiki page is more suitable

  10. Moving Forward • Comments / Feedback • Thanks to all contributors on the list and the SDNRG meeting(s) for the discussion and comments. • Believe document is mature enough • Moving towards publication for IETF 91?

More Related