F5F Stay Refreshed Power Users Networks A local loop is typically defined as a duration of one second.

A local loop is typically defined as a duration of one second.

A local loop is typically defined as a duration of one second.

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smellfish22
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12-06-2016, 06:11 AM
#1
According to what I understand, a local loop connects a client directly to an ISP using two cables. Does this loop extend from each client to a central multiplexer in the area or does it travel straight to an ISP facility? If it ends up at a central location in the city, wouldn't needing separate cables for every customer be very costly? Where would all these cables be placed—thousands of pairs spread over several kilometers? And how would this network grow if each new client required another pair of cables across the whole city?
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smellfish22
12-06-2016, 06:11 AM #1

According to what I understand, a local loop connects a client directly to an ISP using two cables. Does this loop extend from each client to a central multiplexer in the area or does it travel straight to an ISP facility? If it ends up at a central location in the city, wouldn't needing separate cables for every customer be very costly? Where would all these cables be placed—thousands of pairs spread over several kilometers? And how would this network grow if each new client required another pair of cables across the whole city?

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Tanky201
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12-14-2016, 04:45 AM
#2
It connects to a nearby multiplexer, after which several cables lead to the ISP building or sometimes to another multiplexer and then to the ISP. They often exceed customer capacity, ranging from 10:1 to 100:1 or even higher depending on the location.
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Tanky201
12-14-2016, 04:45 AM #2

It connects to a nearby multiplexer, after which several cables lead to the ISP building or sometimes to another multiplexer and then to the ISP. They often exceed customer capacity, ranging from 10:1 to 100:1 or even higher depending on the location.

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PEPR
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12-15-2016, 03:17 PM
#3
It refers to offering more shares than available, often to secure a position or influence in a market.
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PEPR
12-15-2016, 03:17 PM #3

It refers to offering more shares than available, often to secure a position or influence in a market.

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ArkioXD
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12-15-2016, 11:41 PM
#4
When a neighborhood consists of about 100 houses, they typically deploy a 40Gb connection (or multiple 10Gbit links) to the central node while offering a 1Gbit service to each residence. If all 100 devices attempted to download simultaneously at 1Gbit per second, the system would encounter a bottleneck because only 40Gbit of capacity exists from the local node back to the ISP. Based on my calculations, this represents an over-subscription ratio of roughly 2.5:1, though in practice it tends to be greater than that for cable (around 10:1) or DSL (likely 40:1 or higher). Fiber generally performs better, usually around 5:1 or less, depending on the load.
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ArkioXD
12-15-2016, 11:41 PM #4

When a neighborhood consists of about 100 houses, they typically deploy a 40Gb connection (or multiple 10Gbit links) to the central node while offering a 1Gbit service to each residence. If all 100 devices attempted to download simultaneously at 1Gbit per second, the system would encounter a bottleneck because only 40Gbit of capacity exists from the local node back to the ISP. Based on my calculations, this represents an over-subscription ratio of roughly 2.5:1, though in practice it tends to be greater than that for cable (around 10:1) or DSL (likely 40:1 or higher). Fiber generally performs better, usually around 5:1 or less, depending on the load.

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