On Wed, 26 Sep 2001, Bob Tanner wrote:
> Haven't been paying attention to what I've been tell you. :-P
>
> antenna<->arrestor<->low loss cable<->Bridge<->ethernet<->NOC


Isn't that supposed to be:

antenna<->low loss cable<->(building entrance)arrestor<->low loss cable<->bridge<->ethernet<->noc

..with another arrestor every 100ft inside the building, if you have to
run that far?

> Lightning hits antenna there is a very, very good potential that the current
> will flow all the way to the NOC and fry everything.

Well, yeah, obviously, if you throw the arrestor on right at the antenna.
:)

> antenna<->arrestor<->low loss cable<->Bridge<->Media Convertor<->ethernet<->NOC
>
> Stick a piece of fiber in there (media convertor) and the glass protects your
> NOC, since electricity does not flow through glass. You'll loose the antenna,
> arrestor, cable and bridge, but that is much better then your $30K core router.
>
> You also want to make sure the media convertors are on seperate UPS and if
> possible circuits. Electricity is a smart little beast and will flow through the
> circuits in walls and seek and destroy your NOC.

-- 
Nate Carlson <natecars at real-time.com>   | Phone : (952)943-8700
http://www.real-time.com                | Fax   : (952)943-8500