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Common Endpoint Locator Pools (CELP)

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

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Common Endpoint Locator Pools (CELP)

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  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

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