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A presentation about optical networking [pdf]

62 points by aflam 10y ago

andreasley 10y ago
Only mentioned briefly in this document, but may be of interest to some: 10GBASE-LR optics work with old multimode fiber [1]. Replacing the 10GBASE-SR optics with 10GBASE-LR fixed a flapping OM2 link for me (using mode conditioning patch cables). [1] https://www.flexoptix.net/en/blog/2011/09/getting-a-10g-stable-ethernet-link-even-when-using-old-multimode-fiber-om2-om1/ https://www.flexoptix.net/en/blog/2011/09/getting-a-10g-stab...
computator 10y ago
It looks like there is an updated (2016) PDF and video presentation by the same author here: https://www.nanog.org/sites/default/files/Steenbergen.Everything_You_Need.pdf https://www.nanog.org/sites/default/files/Steenbergen.Everyt... https://www.youtube.com/watch?v=_KFpXuHqHQg https://www.youtube.com/watch?v=_KFpXuHqHQg Can someone update the main article link (which currently shows a 2010 version)?
- computator 10y ago
  Also, there are bunch of other interesting sounding tutorials on the North American Network Operators' Group (NANOG) website: https://www.nanog.org/resources/tutorials https://www.nanog.org/resources/tutorials
  - ansgri 10y ago
    Thanks, went off to study Traceroute Tutorial (https://www.nanog.org/sites/default/files/traceroute-2014.pdf https://www.nanog.org/sites/default/files/traceroute-2014.pd...)
- sctb 10y ago
  Thanks, we've updated the link from https://www.nanog.org/meetings/nanog48/presentations/Sunday/RAS_opticalnet_N48.pdf https://www.nanog.org/meetings/nanog48/presentations/Sunday/....
crispyambulance 10y ago
Having worked in that industry 8 years, I can say that's an excellent practical introduction of key topics of the physical layer in optical transport. Most reading material on optical transport is either elementary on one extreme or jargon-y material aimed at pro insiders. It is refreshing to see a survey that covers so much in a clear, concise way.
- aflam 10y ago
  Our company designs optical transport systems; we have a hard time en-boarding new software people because this gap in training material... I'm currently writing a blog post on optical modulation, it's difficult to find an approachable language.
wrigby 10y ago
This is an excellent overview of optical networking - one that I wish I had found years ago. As transceivers are getting cheaper, more and more industries are finding use for optical systems. Having a basic understanding of how these systems work can open up a number of creative solutions to problems that were very difficult to solve before. The amount of throughput that fiber achieves over huge distances is incredible. It's amazing how easy it is to move 100+ gbps between two cities over a single 2-core fiber run.
cyberjunkie 10y ago
I like Slide 80. On the dangers of looking at a light emitting from a fiber - • Class 4 – Burns, melts, destroys Alderaan, etc

62 points by aflam 10y ago

Only mentioned briefly in this document, but may be of interest to some: 10GBASE-LR optics work with old multimode fiber [1]. Replacing the 10GBASE-SR optics with 10GBASE-LR fixed a flapping OM2 link for me (using mode conditioning patch cables). [1] https://www.flexoptix.net/en/blog/2011/09/getting-a-10g-stable-ethernet-link-even-when-using-old-multimode-fiber-om2-om1/ https://www.flexoptix.net/en/blog/2011/09/getting-a-10g-stab...

computator 10y ago

It looks like there is an updated (2016) PDF and video presentation by the same author here: https://www.nanog.org/sites/default/files/Steenbergen.Everything_You_Need.pdf https://www.nanog.org/sites/default/files/Steenbergen.Everyt... https://www.youtube.com/watch?v=_KFpXuHqHQg https://www.youtube.com/watch?v=_KFpXuHqHQg Can someone update the main article link (which currently shows a 2010 version)?

computator 10y ago
Also, there are bunch of other interesting sounding tutorials on the North American Network Operators' Group (NANOG) website: https://www.nanog.org/resources/tutorials https://www.nanog.org/resources/tutorials
- ansgri 10y ago
  Thanks, went off to study Traceroute Tutorial (https://www.nanog.org/sites/default/files/traceroute-2014.pdf https://www.nanog.org/sites/default/files/traceroute-2014.pd...)
sctb 10y ago
Thanks, we've updated the link from https://www.nanog.org/meetings/nanog48/presentations/Sunday/RAS_opticalnet_N48.pdf https://www.nanog.org/meetings/nanog48/presentations/Sunday/....

crispyambulance 10y ago

Having worked in that industry 8 years, I can say that's an excellent practical introduction of key topics of the physical layer in optical transport. Most reading material on optical transport is either elementary on one extreme or jargon-y material aimed at pro insiders. It is refreshing to see a survey that covers so much in a clear, concise way.

aflam 10y ago
Our company designs optical transport systems; we have a hard time en-boarding new software people because this gap in training material... I'm currently writing a blog post on optical modulation, it's difficult to find an approachable language.

wrigby 10y ago

This is an excellent overview of optical networking - one that I wish I had found years ago. As transceivers are getting cheaper, more and more industries are finding use for optical systems. Having a basic understanding of how these systems work can open up a number of creative solutions to problems that were very difficult to solve before. The amount of throughput that fiber achieves over huge distances is incredible. It's amazing how easy it is to move 100+ gbps between two cities over a single 2-core fiber run.

cyberjunkie 10y ago

I like Slide 80. On the dangers of looking at a light emitting from a fiber - • Class 4 – Burns, melts, destroys Alderaan, etc