[clue] Gigabit ports and cables?

[Jim Ockers]

Given the price difference now you might as well just get gigabit 
equipment.  You can always run it slower if you need to for cabling 
reasons.  If some equipment doesn't like a CAT5 cable then you might get 
network errors, but don't rewire everything until you've tried it 
because short CAT5 cables might be fine for gigabit.  For new cables get 
CAT5e of course.

I think without jumbo frames (9000MTU) you might not be able to get full 
gigabit speeds.  For 1500 byte frames with GigE your transfer speeds 
might top out at around 400Mbps, and CPU usage might be a concern.  Here 
is an old but good article about jumbo frames:  
http://sd.wareonearth.com/~phil/jumbo.html  I dig the retro HTML layout.

Jim

-- 
Jim Ockers, P.E., P.Eng. (ockers at ockers.net)
Contact info: http://www.ockers.net/


Dan Kulinski wrote:
> Use ethtool <interface name> to discover the speeds.
>
> Cat5E is the required cable to run gigabit speeds.  If you don't have 
> the cables, Monoprice is a very cheap place to purchase what you need. 
>  I was transfering a set of game files from my PC to my son's PC and 
> we hit 45MB/sec.  If he had a more modern PC with an SSD it would have 
> been even faster.
>
> Dan
>
>
> On Thu, Dec 27, 2012 at 10:44 AM, Adrian Nagle <anagle at naglenet.org 
> <mailto:anagle at naglenet.org>> wrote:
>
>
>     What are my chances of actually getting gigabit speeds?  How to I
>     check if my network cards are compatible?  It is essential to have
>     cat5e cables?
>
>     I had to replace a network switch in my family room and only now
>     realized gigabit switches are common.  Now I'm deciding if I
>     should replace my main network switch at my server to gigabit.  I
>     need to get at least 8 ports which is starting to get expensive
>     for me.
>
>     My computers are two years old, except my server is a decade old.
>      I had my house wired for ethernet last year. House cables are
>     stamped with cat5e. But my random cables between equipment and
>     switches are not cat5e.
>
>     I do occasionally transfer some large encrypted containers and
>     camera picture and video files between my computers and server
>     (not a big deal though).
>
>     Thanks!
>     Adrian
>
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