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Presentation transcript:

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 1Norman Finn, Cisco Systems, Mark Hamilton, Spectralink ak and 802.1AC Convergence Function Date: Authors:

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 2Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Abstract Building upon a model being proposed for the IEEE Portal Convergence Function, this presentation carries that concept into the ak concepts, and 802.1AC considerations for these extended concepts.

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 3Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Following are several slides from the portal presentation (being considered in ARC, and 802.1AC) – 11-14/497 …

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 4Norman Finn, Cisco Systems, Mark Hamilton, Spectralink This is an example of a physical network Two physical boxes, commonly (but inaccurately) called “APs,” connected by an IEEE link. Two clients of “AP 1” shown, two wireless and one wired clients of “AP 2” not shown. No VLANs. “AP” 1“AP”

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 5Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Layering In the ISO layering model, a DATA.request is presented by a higher layer to a lower layer, and a DATA.indication is presented by a lower layer to a higher layer. In all further diagrams in this deck, the “higher” layer is closer to the top of the slide, and the “lower” layer closer to the bottom.

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 6Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Distribution System (DS) A standard view of that same network in today MAC PHY MAC PHY MAC PHY AP STA 1 Non-AP STAs MAC PHY AP STA 2 unspecified portal AP MAC PHY This is similar to IEEE , Figure R-1, but drawn with “request down indication up” rigorously applied. The DS has three users, two APs and a portal, so is shown passing behind a MAC.

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 7Norman Finn, Cisco Systems, Mark Hamilton, Spectralink One possible 802.1AC-to-portal architecture A connecting link is required, because the portal uses a SAP; it does not provide one. Therefore an 802.1AC convergence layer specific to is not necessary. Distrib. System (DS) MAC PHY AP STA unspecified portal AP MAC PHY MAC PHY anything, e.g MAC PHY 802.1Q bridge relay MAC PHY MAC PHY Non- AP station end station

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 8Norman Finn, Cisco Systems, Mark Hamilton, Spectralink But, there is an alternate approach. This interface is defined. It is the DS_SAP, illustrated in IEEE Std Figure R-1. Distrib. System (DS) MAC PHY AP STA unspecified portal AP MAC PHY MAC PHY anything, e.g MAC PHY 802.1Q bridge relay MAC PHY MAC PHY Non- AP station end station

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 9Norman Finn, Cisco Systems, Mark Hamilton, Spectralink So, another representation could be … That is, the 802.1AC Clause “portal convergence function” is not an interface to a portal;.1AC , plus a bridge relay function, is an example of a portal..1AC connects the ISS to the DS_SAP. Distrib. System (DS) MAC PHY AP STA unspecified AP 802.1Q bridge relay MAC PHY Non- AP station MAC PHY end station.1AC One example (of many) of a portal

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 10Norman Finn, Cisco Systems, Mark Hamilton, Spectralink New for ak consideration…

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 11Norman Finn, Cisco Systems, Mark Hamilton, Spectralink MA C PHY MA C PHY MAC AP STA 2 PHY MAC AP STA 1 Non-AP STAs Extending this to P802.11ak + P802.1Qbz MAC PHY 802.1Q bridge relay AP Conv. Funct CF SAP[ ] SAP CF SAP[ ] SAP That is, 802.1AC/802.11ak can define a SAP and a convergence function that supports multiple, logical links as seen by the Bridge, to each of the 11ak-aware non-AP endpoints.

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 12Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Tasks for 802.1AC Rewrite 802.1AC Draft 0.2 Clause to provide a convergence function that maps multiple, logical ports visible to the bridge, to the vector-of-endpoints SAP provided by an 11ak AP.

doc.: IEEE 11-14/0562r0 May 2014 SubmissionSlide 13Norman Finn, Cisco Systems, Mark Hamilton, Spectralink Tasks for ak Define the SAP presented by an 11ak AP to include the vector-of-endpoints parameter, which identifies links to each of the 11ak- aware non-AP STAs.