An Ethernet hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment
Questions tagged [hub]
117 questions
52
votes
6 answers
Why is a router needed?
I‘ve been trying to figure out why a router is needed. I know a router can be used for DHCP and some other things, but I’m just thinking of networking with static IPs. So the following:
Is it possible to do the following with static IPs:
Modem ->…
Maxbit
- 631
21
votes
4 answers
Where can I find an unswitched ethernet hub?
Back when I was just getting into networking, ethernet hubs were common, and switches were a fancy, expensive alternative. Then the price of switches came down so much that hubs became pretty much obsolete, except when you actually didn't want…
Josh
- 3,099
20
votes
11 answers
How to "restart/repair" an USB port?
My laptop has two USB ports, but one is broken, so I use a USB hub in the other good USB port. In that USB hub, I use a mouse and keyboard. Suddenly, that USB port doesn't detect the mouse and the keyboard (even with the light of the hub is on), and…
Click Ok
- 3,935
18
votes
2 answers
Crossover cable or straight through between multiple hubs/switches
I'm networking a bunch of Raspberry Pis together on a subnet as shown in my highly technical diagram below:
I'm wondering if the red cables are supposed to be crossover cables or straight through? The blue cables I'm quite sure are supposed to be…
Matt
- 517
15
votes
4 answers
Why are USB hubs mostly 4- and 7-port
Why are USB hubs provided in 4- and 7-port varieties. What's special about these numbers? Why don't I see 3-, 5-, 6-, and 8-port hubs?
Is there something special about 4- and 7-port configurations that makes them more attractive?
Jay Bazuzi
- 4,210
14
votes
8 answers
Can I charge USB devices from a powered hub that isn't connected to a PC?
This will probably sound familiar to most of you...
In my home, we have a whole bunch of devices that can be charged via USB (two iPhones, a BlackBerry, an iPod Touch, etc ad nauseam). We also have a bunch of USB chargers, each of which has a single…
Anodyne
- 243
13
votes
4 answers
Why does the USB hub need to be connected with my PC to charge my Droid phone?
I notice that my new Motorola Droid phone charges perfectly fine when I connect it to my computer via the USB cable, or if I connect it to a car cigarette Lighter -> USB adapter, or a wall Power -> USB adapter. It also works fine when I connect it…
pkaeding
- 1,490
12
votes
3 answers
Is it important for a USB 3.0 hub to be powered?
Since the power specification for USB 3 is significantly higher than that for USB 2, I'm wondering if it's important to choose a powered USB 3 hub over a less-expensive unpowered USB 3 hub.
milleron
- 121
11
votes
6 answers
Should I use a network hub or network switch?
I want to put a networking device on an Ethernet connection between 2 digital devices. The communication will be 1-to-1; there will only be 2 devices connected through the networking device. And I wont need DHCP or firewalling (for now).
I've…
Martin Bøgelund
- 967
10
votes
3 answers
Can modern switches act like hubs?
I've been trying to find a hub, specifically for the packet broadcast characteristic. I'm troubleshooting a NAS behind a NAT router and want to look at the traffic arriving on the wire and this seems the easiest, fastest way.
Regardless--this is…
Allen
- 327
8
votes
2 answers
What is and how to increase the maximum number of usb devices?
I'm wondering what is the maximum number of USB devices the Linux kernel can manage?
Does this depend on the root-Hub or something else, too?
Is there a way to increase this maximum number?
I need to do this, because I've ran into problems while…
Daniel Jour
- 389
8
votes
4 answers
What is a router? What is a switch? and What is a hub?
I always mess up with the basic concepts in networking. This are the very basic questions.
What is a router, its functions and what is meant by routing?
What is a switch, its functions? Many time I heard that there are layer 3 switches. If there…
narayanpatra
- 697
7
votes
4 answers
Identify the device if it is hub, switch, router or gateway
If you are given two hosts which are connected via a blackbox which you dont know.
How can you recognize that blackbox as hub, switch, router or gateway without using any additional device or host?
One more thing: You can not perform any operation…
user3749029
- 79
6
votes
3 answers
Which power USB hub uses if it has external power supply as well
I have 7 port USB hub with external supply.
I tried turning it off by removing external power but then it takes power from motherboard and is still working.
I have many external hardrives connected to it.
i was worrying if i turn off the power it…
Mirage
- 3,303
5
votes
2 answers
In theory, how would you set up a mechanism by which repeaters/hubs could detect loops and shutdown ports to break the loop?
I am trying to think of a mechanism to use repeaters to detect loops and then shutdown ports in order to break the loops. Is it possible for any solution to work 100%?
user309979
- 69