Re: 25Mbps vs 4 Mbps
Don't forget that in some cases, there are ISP-local cache boxes... i.e. the Youtube Servers to which you refer may live _at_ the ISP. On Mon, Nov 19, 2012 at 7:19 AM, Nick Olsen n...@flhsi.com wrote: It's all about if the bandwidth is there to use. I'm sure every youtube caching server has a connection which exceeds 4Mb/s. How does a faster connection help? It allows the video to fill the buffer faster. Allowing for smoother playback on less bandwidth consistent circuits. Do you need it really if your video source is under 4Mb/s? In a perfect scenario, No. Now, That's youtube. Using Netflix as an example. I can start streaming a movie. And it'll pull 50-60Mb/s for about 20 seconds, And it's playing HD quality almost immediately. Where on a slower connection it may not switch to HD until its filled its buffer more. Nick Olsen Network Operations (855) FLSPEED x106 From: Glen Kent glen.k...@gmail.com Sent: Monday, November 19, 2012 10:04 AM To: nanog@nanog.org nanog@nanog.org Subject: 25Mbps vs 4 Mbps Hi, The service provider(s) pipe that takes all web traffic from my laptop to the central servers (assume youtube) remain same whether i take a 4Mbps or a 25Mbps connection from my service provider. This means that the internet connection that i take from my service provider only affects the last mile -- from my home network to my service providers first access router. Given this, would one really see a 6 times improvement in a 25Mbps connection over a 4Mbps connection? I assume that the service providers rate limit the traffic much more aggressively in a 4Mbps connection. But this would only matter if the traffic from my youtube server is greater than 4Mbps, which i suspect would be the case. The question then is that how does going for a higher BW connection from the service provider help? Glen -- Kyle Creyts Information Assurance Professional BSidesDetroit Organizer
Re: 25Mbps vs 4 Mbps
On Mon, 19 Nov 2012, Glen Kent wrote: The question then is that how does going for a higher BW connection from the service provider help? That is like asking if a 600 bhp car is 6 times better than a 100 bhp car. I'd say you definitely can benefit in surfing speed etc up to somewhere 5-15 megabit/s, after that it's hard to discern any difference in interactivity. For youtube alone I doubt you'll notice that much difference.unless you're watching 720p/1080p material, where you will notice that 4 megabit/s probably isn't enough. I've seen netflix 1080p stream use over 10 megabit/s in 30 second interval, so sometimes it's good to have more :P -- Mikael Abrahamssonemail: swm...@swm.pp.se
re: 25Mbps vs 4 Mbps
It's all about if the bandwidth is there to use. I'm sure every youtube caching server has a connection which exceeds 4Mb/s. How does a faster connection help? It allows the video to fill the buffer faster. Allowing for smoother playback on less bandwidth consistent circuits. Do you need it really if your video source is under 4Mb/s? In a perfect scenario, No. Now, That's youtube. Using Netflix as an example. I can start streaming a movie. And it'll pull 50-60Mb/s for about 20 seconds, And it's playing HD quality almost immediately. Where on a slower connection it may not switch to HD until its filled its buffer more. Nick Olsen Network Operations (855) FLSPEED x106 From: Glen Kent glen.k...@gmail.com Sent: Monday, November 19, 2012 10:04 AM To: nanog@nanog.org nanog@nanog.org Subject: 25Mbps vs 4 Mbps Hi, The service provider(s) pipe that takes all web traffic from my laptop to the central servers (assume youtube) remain same whether i take a 4Mbps or a 25Mbps connection from my service provider. This means that the internet connection that i take from my service provider only affects the last mile -- from my home network to my service providers first access router. Given this, would one really see a 6 times improvement in a 25Mbps connection over a 4Mbps connection? I assume that the service providers rate limit the traffic much more aggressively in a 4Mbps connection. But this would only matter if the traffic from my youtube server is greater than 4Mbps, which i suspect would be the case. The question then is that how does going for a higher BW connection from the service provider help? Glen
