All Questions
54
questions
30
votes
5
answers
32k
views
Ethernet vs TCP vs IP?
What is the difference between Ethernet, TCP, and IP in simple (simple abstract) terms?
Please do not copy from Wikipedia...
- 1,247
11
votes
1
answer
13k
views
Windows 7 doesn't request MTU from DHCP server; what is it thinking?
My computer's Ethernet adapter uses 1,500 byte Ethernet frames. Normally this means that my Local Area Connection's MTU is 1500 bytes.
But my (IPv4) connection to the Internet has some overhead. This ...
- 22.5k
9
votes
4
answers
60k
views
"Ethernet" doesn't have a valid IP configuration
I'm using an ethernet cord to connect to my internet and it has been working well until Thursday morning when I turned on my laptop (Windows 8) to see a yellow triangle sign in the bottom right hand ...
- 91
7
votes
2
answers
62k
views
What is the difference between Layer 2 and Layer 3 broadcasts?
As written in the title my first question is, what's the difference between Layer 2 and Layer 3 broadcasts?
If a host sends a layer 2 broadcast, the switch sends it to all of his ports, but not to ...
- 4,988
6
votes
2
answers
22k
views
Find IP address from a IP-Camera (Ubuntu)
I am using an IP camera which I don't know its IP. I'm unable to connect to it, and all I know it's MAC address. My questions are:
If I didn't know it's MAC address, would I be able to discover its ...
- 209
4
votes
2
answers
4k
views
Same IP for WLAN and ethernet on Linux
I have a laptop running Lubuntu 13.04. I use ssh -X to log into my server and start programs there that I view on my laptop. When I pull the ethernet cable, the laptop switches to WLAN but my ssh -X ...
- 472
3
votes
0
answers
1k
views
OS X : Use the same local ip Ethernet + Wifi
I currently have a Macbook connected to a Thunderbolt Ethernet adapter and as a backup it connects to the same network via wifi. I' using last years airport extreme as a router.
I tend to do a lot of ...
- 131
3
votes
1
answer
10k
views
Ethernet connection shows unidentified network with no internet access
For years I've used a physical Ethernet connection for my internet access, then a few days ago it went down and said it was an unidentified network with no internet access. I dug out a wifi card and ...
- 356
2
votes
1
answer
5k
views
Unplugging ethernet cable without disabling NIC
Is it possible to configure the OS (Windows XP or Linux) or the NIC itself so that the NIC/interface remains enabled when the ethernet cable is unplugged?
Often, especially when I'm tinkering, it's ...
- 335
2
votes
3
answers
252
views
How is it possible to detect whether or not a device is "routing"?
The building I'm in provides ethernet ports through the walls in each room, but it is stated in their policy that they "do not allow wireless routers."
They have been known to deactivate certain ...
- 1,121
1
vote
1
answer
268
views
Is there any way to send signal from hdmi to ethernet converters (which have no ip) over my network
I'm a bit of a networking beginner and I'm looking to send video over my network. I was thinking something like below;
Camera -> hdmi/cat5 converter -> cat5 -> network -> cat5 -> hdmi/cat5 converter -...
- 13
1
vote
2
answers
8k
views
In Windows 7, how do I find the IP of a device (Raspberry Pi) attached via Ethernet?
I want to determine the IP of my Raspberry Pi which is attached to my PC via Ethernet and has a dynamic IP.
- 113
1
vote
1
answer
151
views
Devices aren't both available when connected through a switch
I have the following situation:
Computer (with Windows) with a single ethernet port, with the config below (*)
DeviceA, configured with fixed IP 192.168.254.254, connected alone to Computer with an ...
- 1,926
1
vote
1
answer
1k
views
Can a broken ethernet cable give link but no ip?
I'm just wondering what the structure is here. Can an ethernet cable give link and seemingly work fine, but cause problems with DHCP traffic between two nodes? One part of me is thinking that link ...
- 1,033
1
vote
1
answer
4k
views
How can I assign an IP without DHCP enabled on the router and no static IP configuration possible on the device itself
Situation
I have a Chromecast that I want to connect with an ethernet cable. So I've bought an ethernet to micro usb adapter. I plug the ethernet cable into my router but the chromecast will not get ...
- 13