dslreports logo
site
 
    All Forums Hot Topics Gallery
spc

spacer




how-to block ads


Search Topic:
uniqs
893
share rss forum feed


fonzbear2000
Premium
join:2005-08-09
Saint Paul, MN

What is 100G optical?

»www.fiercetelecom.com/story/comc···13-01-17

What exactly is that? Does it have anything to do with internet connections? What, if any, are the benefits of it to us? I'm looking for a super easy to understand explanation of this.
--
»A pretty good alernative to bit torrent and newsgroups


graysonf
Premium,MVM
join:1999-07-16
Fort Lauderdale, FL
kudos:2
Try googling '100G optical'

Oedipus

join:2005-05-09
kudos:1
reply to fonzbear2000
What are you doing on fiercetelecom if you don't know what a backbone or core is?


fonzbear2000
Premium
join:2005-08-09
Saint Paul, MN

1 edit
said by Oedipus:

What are you doing on fiercetelecom if you don't know what a backbone or core is?

I saw the news item on the home page of this site:
--
»A pretty good alernative to bit torrent and newsgroups


fonzbear2000
Premium
join:2005-08-09
Saint Paul, MN
reply to graysonf
said by graysonf:

Try googling '100G optical'

I just did that and now have a better understanding of all this. It's great to see that Comcast is getting into better technology that can bring us even faster speeds.
--
»A pretty good alernative to bit torrent and newsgroups


YukonHawk

join:2001-01-07
Patterson, NY

2 edits
Disregard.


espaeth
Digital Plumber
Premium,MVM
join:2001-04-21
Minneapolis, MN
kudos:2

1 edit
reply to fonzbear2000
said by fonzbear2000:

What exactly is that? Does it have anything to do with internet connections? What, if any, are the benefits of it to us? I'm looking for a super easy to understand explanation of this.

It's really just a higher capacity interface, like the bump from 100mbps Ethernet to gigabit Ethernet. This larger interface allows for more benefits in cases where you would normally have multiple links between devices.

Packets need to be kept in order from source to destination or you run into flow problems with layer 4 protocols like TCP. In order to accomplish this, routers hash traffic flows so that any given flow stays on one particular interface.

The problem carriers face today is that hashing has to be done at wire speed in hardware, so it cannot be traffic aware. This results in uneven loading.

Say you have 25gbps of traffic between Atlanta and Dallas. As a carrier, you might need 4 or 5 10gig links to carry that traffic because of the unevenness of the hashing algorithm.

When you increase your interface capacity to 100gig, you can aggregate more traffic together in fewer links.

Fewer, bigger links = increased efficiency, lower operational cost per mbps.


fonzbear2000
Premium
join:2005-08-09
Saint Paul, MN
Thanks for the explanation Espaeth. Definitely a great thing for Comcast then!

Madtown
Premium
join:2008-04-26
Madera, CA
reply to fonzbear2000
Will this help lower cost for the customers too?

Oedipus

join:2005-05-09
kudos:1
No.


tshirt
Premium,MVM
join:2004-07-11
Snohomish, WA
kudos:5
Reviews:
·Comcast

1 edit
reply to Madtown
It helps not raise the cost of increased usage.
This is why you keep hearing that the cost of backbone transit is less and less per bit everyday.
Unfortunately, It takes a huge investment to rollout this technology and all the associated upgrades to make use of the extra bandwidth, so while your bill didn't drop, your cost per bit is likely less than ever before.