[94414] in North American Network Operators' Group
RE: Undersea fiber cut after Taiwan earthquake - PCCW / Singtel / KT e tc connectivity disrupted
daemon@ATHENA.MIT.EDU (Rod Beck)
Sun Jan 21 18:19:49 2007
Date: Sun, 21 Jan 2007 23:08:11 -0000
From: "Rod Beck" <Rod.Beck@hiberniaatlantic.com>
To: "John Levine" <johnl@iecc.com>, <nanog@nanog.org>
Cc: <christopher.morrow@verizonbusiness.com>
Errors-To: owner-nanog@merit.edu
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Hi John,=20
There I disagree. Not with your statement, which is correct, but the =
implication.=20
Most transatlantic cables are in the same backhaul conduit systems. For =
example, the three systems that land in New Jersey use the same conduit =
to backhaul their traffic to New York. The other three that land on Long =
Island use the same conduit system to reach NYC.=20
By the way, the situation is even worse on the UK side where most of =
these cables are in one conduit system.=20
And very few of those systems can avoid New York, which is a diversity =
requirement of many banks and one which the IP backbones should probably =
also adopt.=20
You can't claim to have sufficient physical diversity when of the 7 =
major TransAtlantic cables, five of them terminate at the same end =
points. Only Apollo and Hibernia have diversity in that respect. =
Apollo's Southern cable lands in France and Hibernia lands in Canada and =
Northern England. =20
And yes, I will remove the gargantuan disclaimer tomorrow.=20
Regards,=20
Roderick.=20
-----Original Message-----
From: owner-nanog@merit.edu on behalf of John Levine
Sent: Sun 1/21/2007 9:05 PM
To: nanog@nanog.org
Cc: christopher.morrow@verizonbusiness.com
Subject: Re: Undersea fiber cut after Taiwan earthquake - PCCW / Singtel =
/ KT e tc connectivity disrupted
=20
>In many places (based on a quick scan of the telegeography map from 200
>posts ago...) it seems like cable landings are all very much centrally
>located in any one geographic area. There are like 5 on the east coast
>near NYC, with many of the cables coming into the same landing place.
That's true, but they're far enough apart that a single accident is
unlikely to knock out the cables at more than one landing. The two in
NJ cross Long Beach Island, then shallow Barnegat Bay, to the landing
sites. Once crosses in Harvey Cedars and lands in Manahawkin, the
other crosses in Beach Haven and lands in Tuckerton. My family has a
beach house in Harvey Cedars a block from the cable crossing and it's
clear they picked the sites because there is nothing there likely to
mess them up. Both are summer communities with no industry, the
commercial boat harbors, which are not very big, are all safely away
from the crossings. The main way you know where they are is a pair of
largish signs at each end of the street saying DON'T ANCHOR HERE and
signs on the phone poles saying, roughly, don't dig unless there is an
AT&T employee standing next to you. I haven't been to the landing
site in Rhode Island, but I gather it is similarly undeveloped.
Running a major cable in through a busy harbor is just a bad idea. so
I'm not surprised that they don't do it here.
R's,
John
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<P><FONT SIZE=3D2>Hi John,<BR>
<BR>
There I disagree. Not with your statement, which is correct, but the =
implication.<BR>
<BR>
Most transatlantic cables are in the same backhaul conduit systems. For =
example, the three systems that land in New Jersey use the same conduit =
to backhaul their traffic to New York. The other three that land on Long =
Island use the same conduit system to reach NYC.<BR>
<BR>
By the way, the situation is even worse on the UK side where most of =
these cables are in one conduit system.<BR>
<BR>
And very few of those systems can avoid New York, which is a diversity =
requirement of many banks and one which the IP backbones should probably =
also adopt.<BR>
<BR>
You can't claim to have sufficient physical diversity when of the 7 =
major TransAtlantic cables, five of them terminate at the same end =
points. Only Apollo and Hibernia have diversity in that respect. =
Apollo's Southern cable lands in France and Hibernia lands in Canada and =
Northern England. <BR>
<BR>
And yes, I will remove the gargantuan disclaimer tomorrow.<BR>
<BR>
Regards,<BR>
<BR>
Roderick.<BR>
<BR>
<BR>
<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: owner-nanog@merit.edu on behalf of John Levine<BR>
Sent: Sun 1/21/2007 9:05 PM<BR>
To: nanog@nanog.org<BR>
Cc: christopher.morrow@verizonbusiness.com<BR>
Subject: Re: Undersea fiber cut after Taiwan earthquake - PCCW / Singtel =
/ KT e tc connectivity disrupted<BR>
<BR>
<BR>
>In many places (based on a quick scan of the telegeography map from =
200<BR>
>posts ago...) it seems like cable landings are all very much =
centrally<BR>
>located in any one geographic area. There are like 5 on the east =
coast<BR>
>near NYC, with many of the cables coming into the same landing =
place.<BR>
<BR>
That's true, but they're far enough apart that a single accident is<BR>
unlikely to knock out the cables at more than one landing. The two =
in<BR>
NJ cross Long Beach Island, then shallow Barnegat Bay, to the =
landing<BR>
sites. Once crosses in Harvey Cedars and lands in Manahawkin, =
the<BR>
other crosses in Beach Haven and lands in Tuckerton. My family has =
a<BR>
beach house in Harvey Cedars a block from the cable crossing and =
it's<BR>
clear they picked the sites because there is nothing there likely to<BR>
mess them up. Both are summer communities with no industry, =
the<BR>
commercial boat harbors, which are not very big, are all safely away<BR>
from the crossings. The main way you know where they are is a pair =
of<BR>
largish signs at each end of the street saying DON'T ANCHOR HERE and<BR>
signs on the phone poles saying, roughly, don't dig unless there is =
an<BR>
AT&T employee standing next to you. I haven't been to the =
landing<BR>
site in Rhode Island, but I gather it is similarly undeveloped.<BR>
<BR>
Running a major cable in through a busy harbor is just a bad idea. =
so<BR>
I'm not surprised that they don't do it here.<BR>
<BR>
R's,<BR>
John<BR>
<BR>
<BR>
</FONT>
</P>
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dissemination, distribution or copying of this email, and any =
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is strictly prohibited. If you receive this e-mail in error, please =
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documents, contracts or agreements referred or attached to this e-mail =
are SUBJECT TO CONTRACT. The contents of an attachment to this e-mail =
may contain software viruses that could damage your own computer system. =
While Hibernia Atlantic has taken every reasonable precaution to =
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