J
Joe Chisolm
Guest
On Thu, 18 Jul 2019 08:56:31 -0700, John Larkin wrote:
I worked for one of the companies that did wholesale bandwidth and
connectivity in the late 90s and early 2000s. Dot com, money was
flowing. At the end there was a LOT of dark fiber laying in the
ground. If memory serves, we started with 16 wavelengths per fiber,
went to 32 and when we sold out I think it was up to 64 or maybe
128. I've seen ads for 192 wavelengths on a single pair of fiber,
400Gbit/s per wavelength.
Southern Pacific Railroad Internal Network Telecommunications
(aka SPRINT) put a lot of fiber down along their right of way.
I never saw one but they had a train setup to lay the cable.
Pipeline companies where also in the business. Williams
Communications (WilTEL) came out of Williams Pipeline. They
ran the fiber in decommissioned pipelines. They had a pig
setup that would run through the line pulling the fiber.
Internet Exchange Points (IXP) used to be this hush hush,
secret handshake to talk about it, thing. Now you can pull
up a map of the IXPs. A job a few years ago we were setting
up a data center, got a fiber link to the closest IXP. They
where almost giving away 10G ports because so many networks
were moving to 100G links.
--
Chisolm
Republic of Texas
On Thu, 18 Jul 2019 15:10:03 GMT, Jan Panteltje
pNaOnStPeAlMtje@yahoo.com> wrote:
On a sunny day (Thu, 18 Jul 2019 07:17:40 -0700) it happened John Larkin
jjlarkin@highlandtechnology.com> wrote in
miv0je539gupbbqf5dt6n7fjrgjc0jrbmt@4ax.com>:
On Thu, 18 Jul 2019 14:55:11 +0100, Tom Gardner
spamjunk@blueyonder.co.uk> wrote:
On 18/07/19 14:38, John Larkin wrote:
On Thu, 18 Jul 2019 06:58:00 GMT, Jan Panteltje
What do people do that takes so much bandwidth? Upgrade MS
windows???
Most people won't actually use that bandwidth. Web browsing needs
short bursts. Even movies don't need 500 mbits. So averaged rates
across multiple households will be much lower. But the backbone
rates must still be amazing.
And frequently latency is more important than bandwidth.
High (average) bandwidth with high latency means there are many bits
in the pipe - and those will be wasted when re-transmission occurs.
Also, many web transactions are small, to get advertising cookies, and
to enable a real-time auction of your eyeballs.
(And then there are the gamers...)
Going from, say, 30 mb to several hundred makes a nice difference when
browsing. It's shocking to me that I can fill a screen with stuff from
France in about a second.
I load a lot of pdf's too, and they are dramatically faster now.
Sure,
I downloaded (via 4G modem) a complete Linux based distro this week
(xinutop),
took a few minutes.
Surprised me, and at least on my PC I can download that in the
background if I like,
got latest Debian too that way last month..
Speed is not so important for that.
I wish I knew how the Internet actually works. Apparently not many
people really do.
I figured that out when I was having the servers at home..
It is actually simple, name servers are like a phonebook lookup for the
IP number.
Some things are encrypted these days but for the rest the principle is
the same as any LAN.
To navigate and see what's happening you need to know a few Linux
commands,
like for example:
whois host traceroute ping etc etc And run some network monitor, I use
'snort'.
Firewalls, Linux has iptables for that.
Know about ports,
and the most important tool in Linux: netcat
Really netcat is the coolest thing I have.
It makes it so easy to set up a link to anywhere in the world with TCP
or UDP,
just from the command line or from a script.
man netcat.
Probably forgot some other stuff, but it is simple.
There must be millions of miles of multi-gigabit fibers all over the
world and under the oceans. Gigantic switching and routing centers
somewhere. I don't think it's simple.
I've been told that roughly a dozen people really understand the system,
and that I've met one of them. Nice guy, but he doesn't talk about what
he really does.
I worked for one of the companies that did wholesale bandwidth and
connectivity in the late 90s and early 2000s. Dot com, money was
flowing. At the end there was a LOT of dark fiber laying in the
ground. If memory serves, we started with 16 wavelengths per fiber,
went to 32 and when we sold out I think it was up to 64 or maybe
128. I've seen ads for 192 wavelengths on a single pair of fiber,
400Gbit/s per wavelength.
Southern Pacific Railroad Internal Network Telecommunications
(aka SPRINT) put a lot of fiber down along their right of way.
I never saw one but they had a train setup to lay the cable.
Pipeline companies where also in the business. Williams
Communications (WilTEL) came out of Williams Pipeline. They
ran the fiber in decommissioned pipelines. They had a pig
setup that would run through the line pulling the fiber.
Internet Exchange Points (IXP) used to be this hush hush,
secret handshake to talk about it, thing. Now you can pull
up a map of the IXPs. A job a few years ago we were setting
up a data center, got a fiber link to the closest IXP. They
where almost giving away 10G ports because so many networks
were moving to 100G links.
--
Chisolm
Republic of Texas