Functional Chaining System in ICN Phil Brown Fujitsu Laboratories - - PowerPoint PPT Presentation

Functional Chaining System in ICN

Phil Brown Fujitsu Laboratories of America, Inc. December 7, 2016

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Functional Chaining demo setup

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Routing optimization

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In-network caching

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Whole-chain security

Content stack Signature stack

/video_compression/…  /video_combination/..  /video_clips/.... Content 3 (compressed video) Content 2 (hash of combined video & header) Content 1 (multiple hashes of raw video clips & header ) Signature 3 /video/compression/key/3 Signature 2 /video/combiner/key/2 Signature 1 (including multiple signatures and keys) /user/Alex/key/1 /user/Bob/key/1 /user/Charlie/key/1

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Path Search-Similar users

• ptimal vs edge caching

limited link capacity

𝑑𝑗 𝜇𝐶=.8, 𝑑𝑡 𝜇𝐶𝑆=.6

For small α more storage at core is

• ptimum, so the cost reduction

improvement comparing to only edge caching is bigger (20-30%)

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Background

Differences with NFN (Named Function Networking)

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NFN processing procedure

 NFN uses a 3-phase strategy, i.e., upstream fetch, separate code and data fetch, and computation push, to process a functional chaining request

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NFN

NDN Router NDN Router NDN Router NDN Router NFN-capable Router

Interest (|data|h|g) Interest (|data|h|g) Interest (data) Interest (g)

 Assume we have a chain of function applications f(g(h(data))): NFN encodes it as |data|h|g|f  Phase 2 of NFN (separate code and data fetch): An Interest is firstly forwarded to an NFN-capable router, which can divide the Interest to fetch multiple data and functions (codes). After that, data can be processed at the NFN-capable router and returned back to the consumer.

Data Function h Function g Data (data) Data (g) Data (|data|h|g) Data (|data|h|g)

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Summary

 Differences

• Naming
• Interest & Data processing procedure
• Functional chaining forwarding strategy
• Whole chain security