[70685] in North American Network Operators' Group
Re: fiber cut 19 May/PM -> 20 May/AM in Ashburn, VA (lawnmower?!)
daemon@ATHENA.MIT.EDU (Deepak Jain)
Fri May 21 10:43:34 2004
Date: Fri, 21 May 2004 10:42:14 -0400
From: Deepak Jain <deepak@ai.net>
To: Joe Abley <jabley@isc.org>
Cc: "Robert E. Seastrom" <rs@seastrom.com>,
Dan Armstrong <dan@beanfield.com>, nanog@merit.edu
In-Reply-To: <5F4D7B7C-AB32-11D8-BE47-000A95E7E6B4@isc.org>
Errors-To: owner-nanog-outgoing@merit.edu
>> configuration known as "collapsed backbone". in this instance, both
>> pairs of fiber ride in the same conduit for some portion of the
>> distance
>
>
> ... or even as two wavelengths on the same pair of fibre.
>
> It's a sick, sick, twisted world.
Come on, that is what we call lambda-diversity. In case your fiber fails
to carry, say 1550nm in the middle of the night, you are protected with
your 1590nm lambda.
I don't believe how many people engineer for physical diversity and not
lambda diversity -- and then its too late.
<jk, I've been up since 6:30am>
DJ
