3
votes
1answer
149 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 ...
0
votes
1answer
74 views

Giving a switch an IP Address so I can telnet into it

Right, so I've just reloaded my switch resetting the to complete default configuration. It's a Cisco Catalyst 3560. What I am trying to achieve is this: Giving the switch an IP Address, then telnet to ...
0
votes
0answers
80 views

Ethernet port on Linux machine not recognizing ethernet connection with embedded device

I have an atmel at91sam7x256 microcontroller that I would like to use for a TCP/IP communication. The very first step of my project is to be able to "ping" my board given its IP address. I have its IP ...
0
votes
2answers
51 views

Keep IP and MAC address when cable is unpluged

I have an application that look for ethernet interface and only works when at least one ethernet interface with an static IP and MAC address exists. this should show in ipconfig. I have an on-board ...
0
votes
1answer
76 views

How can I connect to a router through a switched ethernet network?

I have a computer and a router connected at different positions to a switched ethernet network. I want to connect them as if I had plugged my computer directly into the router. As I understand it, ...
0
votes
0answers
102 views

Network Instable Connection over LAN, Airport Express works

I just got a cubox-i4 but have a big problem with the LAN connection. It establishes and crashes again. The thing is, that if I connect it via LAN to an Airport Express (connected via wifi), the ...
0
votes
0answers
240 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 ...
3
votes
1answer
2k 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 ...
-4
votes
2answers
127 views

Is there any other network layer protocol other than IP ? If it so ,whether is it applied anywhere? [closed]

Have anybody worked or seen any layer 3 protocol other than IP in ethernet communication between two computers???
3
votes
2answers
203 views

Same IP for WLAN and ethernet on Linux

I have a laptop runnung 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 ...
3
votes
3answers
15k 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 ...
-2
votes
1answer
99 views

Configure the Ethernet Interface from the Command Line

I have connected to a Virtual Server with an SSH client using IP address: 172.xx.xx.154/22 I have been asked to configure eth1 to 172.xx.xx.155/24 with gateway IP Address of: 172.xx.xx.1 Any help ...
1
vote
1answer
753 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 ...
1
vote
2answers
893 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.
2
votes
1answer
422 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
vote
3answers
134 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 ...
3
votes
2answers
22k 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 ...
1
vote
1answer
2k 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 ...
16
votes
5answers
6k 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...