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Michael Heiming
*nix forums Guru
Joined: 19 Feb 2005
Posts: 1423
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 Posted: Thu Feb 10, 2005 5:47 pm Post subject:
That's bandwidth.;)
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Hi!
Stumbled over this rrd pic, looks quite remarkable:
http://www.heise.de/bilder/56284/0/1
--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpunry@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 447: According to Microsoft, it's by design |
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ynotssor
*nix forums Guru Wannabe
Joined: 09 Mar 2005
Posts: 209
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| Posted: Fri Feb 11, 2005 4:14 am Post subject:
Re: That's bandwidth.;)
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"Michael Heiming" <michael+USENET@www.heiming.de> wrote in message
news:ormsd2-ote.ln1@news.heiming.de
I've heard of fiber-optic interfaces which use multi-coloured light, each
frequency/wavelength of which is fully capable. Maybe this is one of those.
--
use hotmail for email replies |
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Michael Heiming
*nix forums Guru
Joined: 19 Feb 2005
Posts: 1423
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| Posted: Fri Feb 11, 2005 5:51 am Post subject:
Re: That's bandwidth.;)
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In comp.os.linux.networking ynotssor <ynotssor@example.net>:
| Quote: | "Michael Heiming" <michael+USENET@www.heiming.de> wrote in message
news:ormsd2-ote.ln1@news.heiming.de
Stumbled over this rrd pic, looks quite remarkable:
http://www.heise.de/bilder/56284/0/1
I've heard of fiber-optic interfaces which use multi-coloured light, each
frequency/wavelength of which is fully capable. Maybe this is one of those.
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Unsure, the picture is from the primary German internet gateway,
built out of three large cisco catalyst. Each capable of 720
GBit/s transfer.;)
--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpunry@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 223: The lines are all busy (busied out, that is --
why let them in to begin with?). |
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James Knott
*nix forums Guru
Joined: 07 Mar 2005
Posts: 1233
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| Posted: Fri Feb 11, 2005 12:16 pm Post subject:
Re: That's bandwidth.;)
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ynotssor wrote:
| Quote: | "Michael Heiming" <michael+USENET@www.heiming.de> wrote in message
news:ormsd2-ote.ln1@news.heiming.de
Stumbled over this rrd pic, looks quite remarkable:
http://www.heise.de/bilder/56284/0/1
I've heard of fiber-optic interfaces which use multi-coloured light, each
frequency/wavelength of which is fully capable. Maybe this is one of
those.
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The bit rates indicated in that graph, are well within the capabilites of a
single colour system. |
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Philippe WEILL
*nix forums beginner
Joined: 09 Mar 2005
Posts: 42
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| Posted: Fri Feb 11, 2005 3:54 pm Post subject:
Re: That's bandwidth.;)
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James Knott wrote:
| Quote: | ynotssor wrote:
"Michael Heiming" <michael+USENET@www.heiming.de> wrote in message
news:ormsd2-ote.ln1@news.heiming.de
Stumbled over this rrd pic, looks quite remarkable:
http://www.heise.de/bilder/56284/0/1
I've heard of fiber-optic interfaces which use multi-coloured light, each
frequency/wavelength of which is fully capable. Maybe this is one of
those.
The bit rates indicated in that graph, are well within the capabilites of a
single colour system.
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Over ten Gigabits i don't think
It's must be DWDM
http://www.webopedia.com/TERM/D/DWDM.html
--
Weill Philippe - Administrateur Systeme et Reseaux |
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James Knott
*nix forums Guru
Joined: 07 Mar 2005
Posts: 1233
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| Posted: Fri Feb 11, 2005 5:11 pm Post subject:
Re: That's bandwidth.;)
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Philippe WEILL wrote:
OC-192 SONET runs at 9.6 Gb/s and it's been around for a few years. The
limit is not the fibre, but in getting the bits into and out of it. I
recall reading a few years ago, about experiments at 40 Gb with a single
colour. |
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Michael Heiming
*nix forums Guru
Joined: 19 Feb 2005
Posts: 1423
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| Posted: Fri Feb 11, 2005 6:06 pm Post subject:
Re: That's bandwidth.;)
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In comp.os.linux.networking James Knott <james.knott@rogers.com>:
| Quote: | Philippe WEILL wrote:
Over ten Gigabits i don't think
It's must be DWDM
http://www.webopedia.com/TERM/D/DWDM.html
OC-192 SONET runs at 9.6 Gb/s and it's been around for a few years. The
limit is not the fibre, but in getting the bits into and out of it. I
recall reading a few years ago, about experiments at 40 Gb with a single
colour.
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Those are a couple of lines aggregated, it's the main German
internet connection. Guess this post will go through the system
out of 3 cisco catalyst, capable of handling 2.1 TBit/sec.;)
--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpunry@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 28: CPU radiator broken |
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Uwe Bonnes
*nix forums beginner
Joined: 15 Mar 2005
Posts: 7
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| Posted: Fri Feb 11, 2005 8:27 pm Post subject:
Re: That's bandwidth.;)
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Michael Heiming <michael+USENET@www.heiming.de> wrote:
What is this dip around 9/11?
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ---------- |
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James Knott
*nix forums Guru
Joined: 07 Mar 2005
Posts: 1233
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| Posted: Fri Feb 11, 2005 8:41 pm Post subject:
Re: That's bandwidth.;)
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Michael Heiming wrote:
| Quote: | OC-192 SONET runs at 9.6 Gb/s and it's been around for a few years. The
limit is not the fibre, but in getting the bits into and out of it. I
recall reading a few years ago, about experiments at 40 Gb with a single
colour.
Those are a couple of lines aggregated, it's the main German
internet connection. Guess this post will go through the system
out of 3 cisco catalyst, capable of handling 2.1 TBit/sec.
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Several years ago, just after I started working in the telecom industry, the
company I worked for retired it's last revenue Morse wire. When I left
that industry, ten years ago, I was working with OC-48 SONET and OC-192 was
"just around the corner". I wonder how much bandwidth can be squeezed out
of a single colour system? What will be the limiting factor? Adding
colours is easy enough and around the time I left, my employer was starting
to run full duplex over a single fibre, using directional couplers. |
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