From STATIC to DYNAMIC Network Paths 1 Network Options 2 - - PowerPoint PPT Presentation

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from static to dynamic network paths
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From STATIC to DYNAMIC Network Paths 1 Network Options 2 - - PowerPoint PPT Presentation

Dec 11, 2022 327 likes •588 views

From STATIC to DYNAMIC Network Paths 1 Network Options 2 Network Options - RSVP: All or nothing. Does not work with NAT at all. 3 Network Options - RSVP: All or nothing. Does not work with NAT at all. - ECN : Good for TCP.

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SLIDE 1

From STATIC to DYNAMIC Network Paths

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SLIDE 2

Network Options

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Network Options

  • RSVP: All or nothing. Does not work with NAT at all.

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Network Options

  • RSVP: All or nothing. Does not work with NAT at all.
  • ECN : Good for TCP. Fairness problems in UDP.

Lack of OS support.

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SLIDE 5

Network Options

  • RSVP: All or nothing. Does not work with NAT at all.
  • ECN : Good for TCP. Fairness problems in UDP.

Lack of OS support.

  • DSCP: Different meaning in different networks.

Might get retagged on the way.

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Client Options

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Client Options

Rate Adapt : Getting so good that it discovers network problems before end-users notice.

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Client Options

Rate Adapt : Getting so good that discovers network problems before end users notice. ICE: Checks connectivity on all available paths Physical, and various ports and protocols.

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End Goal

Find all possible combination of physical, IP (IPv4/IPv6), transport(UDP/TCP/TLS) and ports that have connectivity. Get network and client feedback and choose the best suitable network path. If condition change, be able to dynamically switch between paths/protocols.

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Building Blocks

mRTP mRTP Multipath RTP

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Building Blocks

mRTP mRTP Multipath RTP Enables multiple network paths to be used for media

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Building Blocks

ICE ICE ICE

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Building Blocks

ICE ICE x x x x x x x x x ICE Checks for connectivity across IP, protocol and port

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Building Blocks

ICE ICE x x x x x x x x x ICE Checks for connectivity across IP, protocol and port Builds valid list

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Building Blocks

ICE ICE x x x x x x x x x ICE Checks for connectivity across IP, protocol and port Builds valid list Choses _one_ candidate pair for communication

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Building Time

mRTP mRTP

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Building Time

ICE ICE x x x x x x x x x mRTP mRTP

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Building Time

ICE ICE x x x x x x x x x mRTP mRTP Creates nice transitions No need to switch media addresses if ICE detects a better path

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SLIDE 19

Avoid what?

TCP traffic

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Avoid what?

TCP traffic UDP Rate limit threshold

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Avoid what?

TCP traffic UDP traffic UDP Rate limit threshold DDOS Attack

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SLIDE 22

Avoid what?

TCP traffic UDP traffic UDP Rate limit threshold DDOS Attack UDP + QUIC Annoying disruptions

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Why

  • Combining influence and avoidance
  • Getting harder and harder to influence due to

privacy and security.

  • Internet is dynamic, deal with it.
  • Dangerous with static assumptions, UDP is

best for media etc..

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SLIDE 24

Are We Ready?

  • Something we should do?
  • QUIC vs mRTP?
  • Ready to write drafts? code?

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