Diversity - was: Fiber cut in SF area

Wed Apr 15 14:47:17 UTC 2009

Adjacent cities is not what the long haul providers generally do. 

My clients want Chicago Equinix to Frankfurt Interxion or Chicago Equinix to 60 Hudson. Not Pittsburgh to Cleveland. 

The capex for those services is many hundreds of thousands of dollars. 

Consider all cards required to a provide a protected 10 gig wave service when you have substantial DWDM infrastructure. Not only regen huts, but the POPs in between the desired end points. We have lots of regen huts and POPs in between Chicago and NYC. 

You can't built protection with only four 10 gig wave cards on most routes. 

To take the point further, if you are building a TransAtlantic circuit, you're going to need cards at every landing station. If you have two landing stations on both sides of the Atlantic, then you are talking eight cards. Hmmm  ...

Every span has to be protected. 

And it doesn't make sense usually to be put in separate platforms to reduce the capex involved in those rings. 

Roderick S. Beck
Director of European Sales
Hibernia Atlantic
13-15, rue Sedaine, 75011 Paris
http://www.hiberniaatlantic.com
Wireless: 1-212-444-8829. 
French Landline: 33+1+4355+8224
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rod.beck at hiberniaatlantic.com
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``Unthinking respect for authority is the greatest enemy of truth.'' Albert Einstein. 

-----Original Message-----
From: Frank Bulk [mailto:frnkblk at iname.com]
Sent: Wed 4/15/2009 2:08 PM
To: Rod Beck; joel.mercado at verizon.net; Wallace Keith; nanog at nanog.org
Subject: RE: Diversity - was: Fiber cut in SF area

That's funny, because our company is a (very small) LEC and a member of a
(small) regional network, and we've been asked by a larger consortium to
give them protected 10-Gig waves between two cities.  It's not been a
problem to find DWDM vendors that can do that.

Frank

-----Original Message-----
From: Rod Beck [mailto:Rod.Beck at hiberniaatlantic.com] 
Sent: Wednesday, April 15, 2009 7:39 AM
To: joel.mercado at verizon.net; Wallace Keith; nanog at nanog.org
Subject: Re: Diversity - was: Fiber cut in SF area

That service is probably very expensive.  

There is no known way to provide cheap 10 wave protection. Not carrier
grade. Protected 10 GigE service (LAN PHY 10 GigE) will tolerate a very high
BER before switching. And the cost of switching STM64 is very high as well. 

Bottom line is that it will cost more than two diversely routed 10 gig
waves. 

There is no real market for protected 10 gig waves. Occasionally a bank will
request the service, but backoff as soon as they see the price tag. 

"Hopefully none of these customers had service and protect ckts that went
down... I would be pissed as a ceo if that happen to my company.  Hopefully
level3's new service offering is 100 at percent redundant as stated

The new service offerings include: - Protected Wavelengths: Level 3 now
provides automatic protection-switching to a dedicated diversely routed
wavelength in the event of a network failure. The protection switch, fully
automated and managed by Level 3, happens at switching speeds approaching
SONET restoration times. The single interface to the customer requires no
additional capital cost for customer optical ports, and the diverse
restoration path is fixed and fully known to the customer. These features
allow customers to achieve fast restoration with predictable performance in
their network without adding significant cost and routing complexity. -"

Roderick S. Beck
Director of European Sales
Hibernia Atlantic
13-15, rue Sedaine, 75011 Paris
http://www.hiberniaatlantic.com