2008.02.20 NANOG 42 Lightning talk notes, round 3

I went ahead and grouped the notes from all
three lightning talks together into one set of
notes, as the speakers were powering through
so quickly there was no time to even save one
file and start a new one. ^_^; Again, apologies
in advance for the horrific typos and misspellings,
I think we're getting a higher and higher prepondeance
of fast talkers presenting these days. :slight_smile:


2008.02.20 Lightning talks

Three lightning talks, 10 minutes each.
(notes from all 3 in same file for me.)

Martin Hannigan
from start to transport: submarine cable deployment

hannigan@gmail.com, Keflavik Iceland
deployed multiple submarine cables, has a
background as a captain, done submarine cable

iceland surrounded by water
lowcap cable <5G
hicap cable 720G
lowcap cable is to EOL soon
hicap subject to backhoe issue

Drop a berrilium steel splitter in
middle of atlantic to peel off fibers
to islands.

Security benefits--communication to other
countries, rights to access, freedom of
Performance concerns (speed of light, etc.)
.75ms per 150km
ROI--will you get return on your investment

wet/dry plant
manufacturer (tyco)
desktop study (DTS)
tends to be vendor locked in for full system.
biggest cable is 8pair cable.
undersea routing--where will you drop it

length--too long may be too muc delay
repeater distance and sparing; closer, the
  more you can pump out and handle upgrades to
  future tech, but costs more.
shipping lanes, fisheries, geological considerations
  fisherman have associations; you've got to talk to
  the commercial fishers
anchors, backhoes--more than 50% cause of outages.
permitting to cross international boundries, and pay

sign intent to proceed; gets materials going
commision desktop study
realeastate for landing spots
complete engineering
ocean survey, map topography A to Z
manufacturer cable in segments, then join it at
A/Z ends dropped to the beach, cable rolled out

Suprise, Greenland connect!
3 routes out of country now

41 active underwater US east and west coast

50 active cable ships that lay/repair
ships are shared out, contracted to each other
if another ship is closer to where a cut is;
they all use a common jointing technique.
Cables powered from landing stations, 48vDC
powered into the cable.
More denser, the cheaper.

east coast to london, cables cross all over
the place.

Telegeography and Cable Operators are your friends.

Use armor on cables, bury offshore; costs more, but
worth it.

prefix mapping to sub cables might be interesting.

Be wary of FUD.

Fishing conflicts analysis--reroute around fisheries.

all nautical charts are in meters; 2150 meters down.

Bathymetry charts showing currents, can cause

landing station approach, very shallow.