3 ms·
It is also possible that they are using WDM-PON with a different wavelength for each subscriber. Even with Active Ethernet (the industry term for dedicated run
by jauer 13y ago
It is also possible that they are using WDM-PON with a different wavelength for each subscriber.
Even with Active Ethernet (the industry term for dedicated run of fiber to each subscriber) you likely still have a bandwidth constraint somewhere, be it at the switch uplinks or border routers so some level of oversubscription is a given.
Right now FTTH networks are getting away with some pretty wild oversubscription ratios since content and consumption are lagging. From what I've seen on my network residential traffic tends to interleave pretty well as it is really bursty. Business traffic tends to a constant during the work day so can't interleave as many business customers. It will be interesting to see what Google Fiber charges medium & large businesses.
- Terretta 13y agoJust checked your profile -- love what you're doing. I helped start up a metro ISP in early 90s that we grew gangbusters by guaranteeing no busies and max modem speeds, till it got rolled up by a telco in late 90s. Incidentally, as this is about hosting one's own servers, early on I wrote the first (as far as I know) dynamic DNS for dial-up users, so when you connected to a Portmaster and auth'd via RADIUS, your username.isp.com got pointed to your dynamic IP, allowing you to host over dialup under your own name. Customers even ran their own mail servers at home since SMTP was happy to wait for them to dial in. I believed in user publishing then and still do today. From day one competitor telco ISP services (and telco backbone links) were so oversubscribed it felt immoral. Sorry to hear that's still not changing.