http://news.yahoo.com/s/afp/20070112/tc_afp/asiaquakeinternet_070112170621
A few numbers to help understand the scale of the effort being applied.
-Bill
The Smithsonian has a beautiful online exhibition
on the laying of cables in oceans in the 19th
century.
-Dirk
http://www.sil.si.edu/Exhibitions/Underwater-Web/uw-bold-and-cautious-01.htm
Bill Woodcock wrote:
http://news.yahoo.com/s/afp/20070112/tc_afp/asiaquakeinternet_070112170621
A few numbers to help understand the scale of the effort being applied.
-Bill
"But that was so long ago! Everything should be fixed already."
customers response to suggestion that the reason why mail delivery to their asian correspondents has been somewhat unreliable and delayed ever since.
Is it just me or is this article a migraine inducing mix of metric and
English measures?
down to about 4,000 metres (2.5 miles), ...
100 metres (yards) long ...
waiting for 30 to 40 mile-an-hour winds (48 to 64 kilometres- an-hour)
to die down...
The winds have stirred up 10 to 12 metre waves....
Today's fibre optic cables are just 21 millimetres in diameter....
The grapnel is a metal tool about 18 by 24 inches (46 by 61
centimetres) ...
Arrgh...
Hi,
Nice flash animation from alcatel how submarine cables get laid and repaired:
http://www1.alcatel-lucent.com/submarine/products/marine/index.htm
bye,
ingo
Thanks for the link, which brought me to the page
http://www1.alcatel-lucent.com/submarine/vessels/index.htm
where their vessels are decribed.
Their specs bring up something (at to least to me) of interest.
The popular story is always "in the 90-ties so much submarine
(trans-Atlantic & -Pacific fiber was laid that it will take decades
to fill it up. And the bust of 2000 seemed proof enough.
However, from the specs of Alcatel's 5 vessels one learns
that 4 of them are effectively from 2002 (!).
So did Alcatel some anti-cyclic investing - or did they know
more than others?
grtz
d
Jim Segrave wrote:
http://news.yahoo.com/s/afp/20070112/tc_afp/asiaquakeinternet_070112170621
A few numbers to help understand the scale of the effort being applied.
Is it just me or is this article a migraine inducing mix of metric and
English measures?
you're lucky they also didn't use nautical miles and fathoms (1.829
meters in si units)...
I have a cage at an AT&T hosting facility in NY.
Every few weeks I end up with horrendous VPN problems to another site I have on MCI's network in Maryland, as well as to a partners site, in the same area, also on MCI.
mtr -s 800 to either site shows 10% packet loss on the hop from:
12.122.105.45 -> 192.205.34.50
Both of these appear to be AT&T routers (I say appear to be because I am relying on the netblock information from ARIN- reverse DNS for routers seems to be uncool).
Does anyone else run into this problem? Smaller pings show far fewer (if any) issues and other traffic is passable- but it kills my VPN's.
-Don
I have had similar issues with AT&T in NY. They have peering issues with MCI killing random access to random websites, (www.netflix.com, www.netbank.com). I trouble shot it with AT&T a couple week ago and they killed a bad link. It fixed my problem. Last I knew the link was still down and they were looking to repair it this week.
-Matt
Joel Jaeggli <joelja@bogus.com> writes:
Is it just me or is this article a migraine inducing mix of metric and
English measures?you're lucky they also didn't use nautical miles and fathoms (1.829
meters in si units)...
Leagues... mustn't forget leagues.
---rob
Furlongs per fortnight.
This article paints a rather dismal picture:
Despite optimistic estimates that it would take only three weeks
to repair the massive damage done to what are now said to be
eight submarine cables by the Dec. 26, 2006, magnitude-6.7
earthquake near Taiwan, reports today indicate that not one of
the cables is back in service.
http://www.telecomweb.com/tnd/21168.html
Frank
Earth is a single point of failure.
Telegeography has created a nice map showing the affected cables.
http://www.telegeography.com/wordpress/?p=45
NTT reports it has fully restored all its circuits through other routes. Other carriers in the region are reporting 80% to 95% of normal service
has been restored through other routes.
IP does not provide survivability UNLESS you have alternate, diverse
connectivity. But alternate routes are often more expensive, higher
latency, i.e. less competitive.