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Bug Forces Android Devices Off Princeton Campus Network

AmPz Re:OIT sucks (309 comments)

Parent should be moded down, not up. Obviously rantings from a affected and disapointed user. Princeton are well within their rights to ban devices which case network disruptions to other (innocent) users. If malfunctioning devices were not disconnected from the internet when detected, internet would probably not be working at all today. Princeton have performed their task exemplary of maintaining network reliability for users with well behaved devices, combined with excellent bug reports to google. Bug reports which google however has chosen to ignore. The responsibility for any problems this causes for you is entirely Google's. They are the ones you should blame. I have a HTC Desire, and I have been having the same issue in my home network since I bought the phone. My internet provider has a 4 hour DHCP lease, and refuses internet access to devices with expired DHCP IP leases. I am not blaming my ISP. They are not doing anything wrong. Google however are to blame, since they have been ignoring this very serious bug report for a long time.

more than 3 years ago

Plastic Fiber Could Make Optical Networking a DIY Project

AmPz Re:So... (170 comments)

No. That is incorrect.
People seems to automatically associate fiber with high speeds and long distances.
But in reality, plastic fiber does not have those capabilities. A plastic fiber intended for 100Mpbs will work with 100Mpbs, but it cannot be upgraded to higher speeds in the future. The multimode characteristics of the fiber limits the bandwidth.

You only get the super high performance if you use single mode glass fiber. And that stuff is very expensive and complicated to work with. The end equipment is also quite expensive. The single mode glass fiber itself is cheap thou..

Fiber has bend radius limitations, and will not work well if you bend the fiber sharply. CAT5/CAT6 also has bend radius limitations, but is more forgiving. It will work fine even if you make a sharp 90 degree bend.

In general, plastic fibers are no better than CAT5/CAT6. Sometimes it is even inferior to CAT5/CAT6. The only technical advantage plastic fiber has over CAT5/CAT6 is the eletrical isolation, which makes it more or less immune to lightning.

about 7 years ago


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