Why%20AN%20has%20always%20been%20doomed - PowerPoint PPT Presentation
Title:
Why%20AN%20has%20always%20been%20doomed
Description:
Why AN has always been doomed. Laurent Mathy. Lancaster University. What is AN? ... It is doomed and always has been...please leave it where it belongs ... – PowerPoint PPT presentation
Number of Views:46
Avg rating:3.0/5.0
Title: Why%20AN%20has%20always%20been%20doomed
1
Why AN has always been doomed
- Laurent Mathy
- Lancaster University
2
What is AN?
- Remember it all started with capsules
- To many this has evolved towards store-process-fo
rward - User-controlled operation
- This all means per-flow processing
- Complex packet classification
- Micro-flows or small aggregates
- Memory/cpu bottleneck
3
AN where?
- As a result, AN where flows are scarce
- That means the outer edge of the network
- Either inside tier-3 ISP at access with customers
- Or inside customer networks (campus/corporate
networks) - A no-no at tier-3/tier-2 boundaries and deeper
- This is near end-to-end
4
AN usefulness
- Because AN is only viable at outer edges,
usefulness is rather limited - Why push complex processing at
- End of first hop?
- Start of last hop?
- Can still be useful to help cross-layer designs
- Allow applications to peek inside the network
- Measurements (speed, volume!)
- routing info, etc
- Video transcoding anyone????
5
This guy is wrong!
- Wait! AN is open node architecture, open
interfaces and clever software management
(modular systems, reflections, etc) - But OpenSIG/OpenArch have failed
- Do you remember IEEE PIN 1520 ?
- Node architects are doing fine, thank you
- Software engineers, OS developers and the others
havent been sleeping - modprob!
6
Imagine
- Even if CISCO can be persuaded and Network admin
lets you run vetted third party code and
somethings not working - Who you gonna call?
- You have compatibility issues with the other
side - Looks like there are too many people who can
blame each other - After too many disturbed lunchesactive-net
disable
7
Conclusion
- Wherever I look, I see issues for AN
- Not much operational sense
- Core today is edge tomorrow
- Not much commercial sense
- Constructors protectionism
- Academically, contribution has been to mostly
show what not to do - It is doomed and always has beenplease leave it
where it belongs
Recommended
CrystalGraphics Presentations
