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Comment Re:Critical Cable? (Score 4, Interesting) 145

I think that's the point. This guy knows the fiber paths and goes around cutting both sides of the ring. Even if all traffic is protected it costs tens of thousands of dollars to do emergency repair work on a fiber cable.

Also, diversity is typically only used from office to office. From the office out to the environmental cabinets and pedestals and so forth servicing individual customers there's typically a single fiber path.

Comment Re:Wouldn't apply to Netflix (Score 2) 85

This is an antiquated and stupid convention that really only applies to transit carriers. Netflix pays their wholesale ISPs for transit. Retail ISPs pay their wholesale ISPs for transit. Peering allows them both to save that money. The ratio doesn't mean anything because every single bit originates from a paying customer of the Retail ISP. The only Retail ISPs that don't want to peer with Netflix are the ones who also sell video content.

Comment Re:Wouldn't apply to Netflix (Score 5, Informative) 85

No, it really isn't. This is about Retail ISPs who also sell video (cable companies) wanting to limit access to Netflix for their customers without doing something obviously like rate limiting/filterering at the gateway router. The 'people in the middle' like Level3 and Cogent are bypassed completely when Netflix peers with an ISP, which saves both Netflix and the ISP money. Hint: I work for an ISP, we don't sell video, we peer with Netflix everywhere we are able as well as install their caching appliances in our offices to reduce our transit and backhaul costs.

Comment Re:Fuck that (Score 1) 40

In fairness, this is layer 1 stuff that they can't really backdoor. I guess they could create a big red "shutdown" button in Beijing though.
The routers are what you have to worry about forwarding select interesting traffic back to the mothership.

I still wouldn't use Huawei transport though, it's honestly not that cost competitive with home grown vendors like Infinera and Ciena.

Comment Re:1tbps is easy (Score 1) 40

That's no acheivement. 1tbps over 1000 miles is easy. That's ten OTU4 channels running over a simple DWDM system. All the coherent hardware out there has great OSNR performance so running through 10 amplifiers over 1000 miles of OSP fiber is an everyday project.
What this article is about, what everyone is working on in the optical space, is a single 1tbps super-channel. Everyone's already concluded we can't hit 1tbps on the same 25ghz spaced channels we use for 100G, so they are working on concatenating 12.5ghz slices into a larger superchannel which may be 50, 62.5, 125 ghz spaced, whatever the needs require. However, that's hard to understand so the blurb is just 1tbps over 1000 miles, which sounds impressive to someone who hasn't already been doing that for years.

Comment 1tbps is easy (Score 4, Informative) 40

We've been turning up 1tbps optical transport for years, this is easy. You can do this with commodity parts. What they've probably done, which isn't in the summary or TFA, is turn up a single 1tbps super channel over a flexible grid ROADM. That's currently in the development stage with a lot of vendors, such as Alcatel, Ciena, Infinera, Cisco and more. That would allow the entire ROADM system to scale up the N-Terabits, where N is going to depend on how many superchannels can be crammed into the C-band. Probably on the order of 50-100 terabits per second fully loaded.

Pascal is a language for children wanting to be naughty. -- Dr. Kasi Ananthanarayanan