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Explore the draft proposal by Dave Crocker and Avri Doria on CELP, which aims to share locator pools across associations, reduce transaction costs and improve performance information. The document presents various multiaddressing schemes, emphasizing transport-based and wedge-based approaches with variable granularity and reachability insights. Discover issues like path selection, security concerns, and maintaining synchrony among modifiers. Gain insights on next steps to resolve security issues and formulate CELP service model details.
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Common Endpoint Locator Pools (CELP) • draft-crocker-celp • Dave Crocker • Avri Doria • Multiple multiaddressing schemes • Different approaches have different benefits • Proposal: • Share locator pools across independent associations • Reduce multiaddressing control transaction costs • Improve availability of locator performance information D. Crocker 9/5/2014
Synergy Across Associations • Transport-based schemes • Multiplex control exchange in data stream, so control data does not increase packet overhead • Can naturally obtain path quality information • Wedge-based schemes • Multiaddressing for legacy transports • Naturally independent of individual transport associations • Can operate asynchronously of associations, deferring control exchanges, often needing no exchange • Can maintain pools with different referential granularity D. Crocker 9/5/2014
Variable granularity {local, remote} {local, remote, flow} {local, remote, protocol, port} {local, remote, type of service} Status Reachability Performance Framework TportMA TCP AddDeleteModify WedgeMA LocatorPools H1all EP2sip EP2file H = host EP = endpoint MA = multiaddressing IP D. Crocker 9/5/2014
Issues • Path selection • Which paths are available or better? • Suggestion: Defer generality; start with primary and fallback choices • Local/Remote combinatorials • Suggestion: Defer generality; start with just {remote} or {local, remote} • Security • Different schemes have different degrees of security concern about weakest participant affects entire service • Maintaining synchrony among different modifiers of pool • Referential commonality • Different schemes use different identifiers • How to know that different locators refer to same endpoint? • Suggestion: That’s what domain names are for… D. Crocker 9/5/2014
Next Steps • Resolve • Differential security issues • Near-term vs. long-term issues • Determining common endpoint referencing • Formulate CELP service model details • Data structures • Operations D. Crocker 9/5/2014