As everyone else has said, fiber is best, but if that is not an option...
We have had good luck using these:
http://www.hyperlinktech.com/web/hgln_cat6.php
Trancievers will work as well, but that is a more expensive option.
Nothing is going to protect you from a direct strike.
Jerry
Todd Vierling [EMAIL PROTECTED] writes:
Seriously, though, that's exactly what you're describing, and about what I'd
suggest in a no-other-option scenario -- but if it's possible to pull fiber
through the conduits, it would probably be far less expensive long term, or
even medium term if
In message [EMAIL PROTECTED], Robert E.Seastrom writes:
Todd Vierling [EMAIL PROTECTED] writes:
Seriously, though, that's exactly what you're describing, and about what I'd
suggest in a no-other-option scenario -- but if it's possible to pull fiber
through the conduits, it would probably be
On Wed, 14 Sep 2005 08:44:16 -0400
Steven M. Bellovin [EMAIL PROTECTED] wrote:
In message [EMAIL PROTECTED], Robert E.Seastrom writes:
Todd Vierling [EMAIL PROTECTED] writes:
Seriously, though, that's exactly what you're describing, and about what
I'd
suggest in a
In message [EMAIL PROTECTED], Marshall Eubanks writes:
My direct experience with running long-distance underground cable is
dated -- let's put it like this; we were dealing with RS-232 -- but the
countermeasures to a direct strike on copper cables don't seem to have
improved nearly
There's not much left to interpretation and preferences here, aside
from the choice of medium to be used. I should also add that some of the
advice that has been posted in this thread, as well-meaning and thoughtful as it
has been, has been downright dangerous to follow.
If one is going to run
To: nanog@merit.edu
Subject: Re: CAT5 surge/lightning strike protection recommendations?
There's not much left to interpretation and preferences here, aside
from the choice of medium to be used. I should also add that
some of the
advice that has
Speaking on Deep Background, the Press Secretary whispered:
re: what did your electricians say ...
Back to lurking in a moment, but I should note that fire and safety code
issues
are so shrouded in matters of locality and jurisdiction, at times, and bound
up
in industry and
On Tuesday 13 September 2005 03:24 pm, R.P. Aditya wrote:
Anyone have recommendations (tested/practical is best :-)?
First bond the cable shield to earth at the entry point in both buildings.
Second use a Tripplite DNET-1 at both buildings. make sure you have a single
point ground terminal
On Tue, 13 Sep 2005 20:24:51 +, R.P. Aditya [EMAIL PROTECTED] said:
I have a bunch of cat5 buried about 1 ft below the surface
connecting multiple buildings on a campus (short runs) and lightning
strikes nearby have caused surges along one or more of the cables
and burnt out switch
In message [EMAIL PROTECTED], Aditya writes:
The short-term solution seems to be using the APC PNET1s/Tripplite
DNET1/etc. in each unit and tying them to the water main as an
inexpensive, immediate step while funds are allocated for conduit,
labor etc..
If I recall correctly, the National
Steven M. Bellovin wrote:
In message [EMAIL PROTECTED], Aditya writes:
The short-term solution seems to be using the APC PNET1s/Tripplite
DNET1/etc. in each unit and tying them to the water main as an
inexpensive, immediate step while funds are allocated for conduit,
labor etc..
I've had good luck with Oneac products, such as RJELP100. That being
said, it's probably not a good idea to connect switches and/or pc's in
different buildings with copper. I'd use fiber between buildings if at
all possible . Differences in ground potential between buildings
(especially during
On Tue, 13 Sep 2005, R.P. Aditya wrote:
I have a bunch of cat5 buried about 1 ft below the surface connecting multiple
buildings on a campus (short runs) and lightning strikes nearby have caused
surges along one or more of the cables and burnt out switch ports.
Don't do that, then.
I would
Fiber would be my choice. Not only will it solve the lightening strike
problem; you will not have to worry about
ground potentials being different on each side of the cable run.
James
Routing and Security Administrator
At the Santa Fe Office: Cyber Mesa Telecom
[EMAIL PROTECTED] [EMAIL
Anyone have recommendations (tested/practical is best :-)?
The APC Protectnet PNET1 and PRM24 seem quite nice and not
too expensive --
if they workpros? cons?
It sounds like you're either out of NEC, or, you are grounding them
to waterpipe. I believe NEC calls for grounding via
I have a bunch of cat5 buried about 1 ft below the surface connecting
multiple
buildings on a campus (short runs) and lightning strikes nearby have
caused
surges along one or more of the cables and burnt out switch ports. I would
like to protect the switch ports -- there seem to be lots of
On Wed, 14 Sep 2005 12:24:39 +1200 (NZST)
Mark Foster [EMAIL PROTECTED] wrote:
I have a bunch of cat5 buried about 1 ft below the surface connecting
multiple
buildings on a campus (short runs) and lightning strikes nearby have
caused
surges along one or more of the cables and burnt
R.P. Aditya wrote:
I have a bunch of cat5 buried about 1 ft below the surface connecting multiple
buildings on a campus (short runs) and lightning strikes nearby have caused
surges along one or more of the cables and burnt out switch ports. I would
like to protect the switch ports -- there seem
Speaking on Deep Background, the Press Secretary whispered:
I have a bunch of cat5 buried about 1 ft below the surface connecting multiple
buildings on a campus (short runs) and lightning strikes nearby have caused
surges along one or more of the cables and burnt out switch ports. I would
David Lesher wrote:
Surge protectors can not protect you from ground differential issues.
True enough - but 10/100 Ethernet is normally isolated by the
transformer on the Ethernet transceiver. AFAIK there is not a
connection between the signal lines and ground. Isolation is 1500V for
the
On Tue, 13 Sep 2005, David Lesher wrote:
Put a fiber transceiver in building A. At least 10 foot away,
put in a 2nd transceiver and connect THAT to the CAT5 going to
building B. Connect A B wallwarts to different breakers, with
surge protectorsand stock spares.o
That's an amazingly
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