Solved

Power over ethernet - Any loss of speed, etc???

Posted on 2014-09-28
8
561 Views
Last Modified: 2014-09-28
I need to get a network switch and I am considering a 4/5 port switch that get it's power from the ethernet cable. i.e power over ethernet. I was just wondering if there is any disadvantages of this when compared to a main powered switch? Any lose of speed, etc? It's just a home network so no high demands.
0
Comment
Question by:petewinter
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
  • +1
8 Comments
 
LVL 96

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 350 total points
ID: 40348321
There's no point in spending the extra money UNLESS you have a device that uses PoE.  Do you?  In general, they are used with phones... perhaps wireless access points.  But otherwise, very few items will make use of it, especially in a home network.

That said, there should be no noticeable difference in performance.
0
 

Author Comment

by:petewinter
ID: 40348327
Thanks for the reply. Oh I think I have this confused. I was thinking the actual switch would not need a main supply. i.e. It would get it's power from the joining ethernet cable. Does that mean if the switch has PoE it's talking about the port that come out of it?
0
 
LVL 13

Assisted Solution

by:akb
akb earned 75 total points
ID: 40348334
Yes. The switch will still need mains power. Also, POE uses some of the wires which means most POE devices are limited to 100GB as GB ethernet uses all 8 wires. There are devices which allow GB and POE but these are more expensive.
0
Percona Live Europe 2017 | Sep 25 - 27, 2017

The Percona Live Open Source Database Conference Europe 2017 is the premier event for the diverse and active European open source database community, as well as businesses that develop and use open source database software.

 

Author Comment

by:petewinter
ID: 40348339
Thanks, but what do you mean by GB and POE? No reduction in speed?
0
 
LVL 96

Accepted Solution

by:
Lee W, MVP earned 350 total points
ID: 40348351
Strictly speaking, akb is mis-.... labeling?  GB = Gigabyte, akb really means Gb, which means Gigabit.

POE / PoE means Power Over Ethernet.  It's where the switch provides power to device on the network so they they don't need their own power cables.  The switch itself needs power.  

I have a client who has phones that are PoE - they are more like older phones in that they ONLY have a network cable plugged in to them, no power cable/power brick because the switch provides the power for the phone (similar to the old phone system which provided power to the phones in the old days in most homes).  The same client has a wireless access point (like a wireless router, but no router capability, it just provides wireless) that gets it's power through the network as well - it's sitting in a drop ceiling with no power cables, just the ethernet cable connecting it and powering it.

Based on your comment to my response before, I agree - I think you were confused.  Neat idea though... but as far as I know, know switch exists that gets power from the network cables as no network adapters provide power over ethernet TO the switch.
0
 
LVL 13

Expert Comment

by:akb
ID: 40348353
GB is gigabit - 1000mb.
POE is Power Over Ethernet.

In my comment I meant 100mb (megabit), not 100GB.
0
 
LVL 30

Assisted Solution

by:Predrag
Predrag earned 75 total points
ID: 40348420
I'm not sure if I understood question good.

You want to buy switch powered by POE. There is no loss of speed, BUT you still need POE injector to power up switch (it can be more expensive). This kind of switch is usually used on places where you don't have electric plug - attic, roof etc. If this is not case, there is no gain from buying that kind of switch (except you already have some POE device to power up that switch).

Or I have missed my point completely. :)
0
 

Author Closing Comment

by:petewinter
ID: 40348426
Many thanks for your help and advice. I assume that if I have not power I just need to use a ethernet splitter and that will share the speed.
0

Featured Post

Enroll in July's Course of the Month

July's Course of the Month is now available! Enroll to learn HTML5 and prepare for certification. It's free for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Problem Description:   Couple of months ago we upgraded the ADSL line at our branch office from Home to Business line. The purpose of transforming the service to have static public IP’s. We were in need for public IP’s to publish our web resour…
#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

630 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question