[c-nsp] Fiber

[Andrew Gallo]

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madunix wrote:
> I need to know your opinion about fiber to desk i.e. pros and cons..
> 
> Thanks in advance.
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We have an extensive fiber to the desk network.

The pros are that it allowed us to centralize equipment much farther
away from the clients than the 100m distance limitation of twisted pair.
 This allowed for better port utilization, better environmentals (power
and cooling in one place rather than lots of closets)

The current plant we're on has supported us from 10BaseFL, 100BaseFX,
ATM155, and will continue to support us through 1000BaseX (though we
might run into some distance limitations on some of our stations).  So,
the plant has last much longer than a copper plant would have.

Cons:
The electronics are more expensive: fiber switchports will cost mor and
you'll need media converters or fiber NICs, the fiber patch cords are
more expensive.

Connectors: There has been one copper connector for twisted pair
ethernet, while we have several for fiber

No speed negotiation: we do have some devices that are 10Base-T only or
100Base-T only, so that presents a challenge (different client equipment
to allow for rate adaptation.

New problems that are arising:
No realistic PoE option: we have a growing demand for network powered
devices (APs and phones).  There are power injecting media converters,
but they are more expensive.

What specifically is leading you to FTTD?

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