1
vote
0answers
24 views

Why am I invisible to the devices on my network?

I've been using a DLink powerline adapter to establish a wired connection to my upstairs PC. A couple times a day, for sometimes hours at a stretch, I lose the ability to communicate with other ...
0
votes
2answers
38 views

Can I “add” an ethernet port to laptop using USB-to-Ethernet Adapter

I have a laptop with one ethernet port and a wifi too. To share an internet connection, I connect my laptop through wifi (typically in hotels), then bridge it to the ethernet port by making the ...
53
votes
5answers
6k views

The locking clip/tab on my Ethernet cable's plug is broken. How can I fix it?

I have a 10 meter long Ethernet cable. One plug has the little locking clip missing, just like missing the part in red ellipse in the following picture. How can I fix it? Is this something I ...
0
votes
0answers
84 views

3com OfficeConnect 8 port switch freezes/crashes?

I have some old 3com OfficeConnect 8 port switches. I have two of them, switch A and switch B, connected together and some hosts connected to the ports of both switches. When I let a host on switch A ...
0
votes
0answers
140 views

Ethernet interface 'em1' not allowing connection

Why does my network interface 'em1' (the onboard ethernet) not allow NetworkManager to do anything with it? It also doesn't seem to work to use ip addr add to add an IP to it. With my laptop plugged ...
0
votes
2answers
5k views

Wired Connection Suddenly stopped working on ubuntu 12.04 after update

Here is the thing! am on day 5 of no wired internet connection. I have spent the last 4 days searching through every forum and Q&A sites, until i finally decided to post this, so I have done my ...
1
vote
1answer
230 views

How to test the throughput between 2 Network adapters on the same PC? [closed]

The motherboard of my desktop PC features two Ethernet ports. Each port has its own network controller from Realtek and they are both capable of Gigabit Ethernet. Now, I have this crazy idea to take a ...
4
votes
1answer
134 views

New construction - cat 6A. Will cat 6A patch cords work with my cat5e computer/switch ports?

In the planning stages of a new school construction project. What is the current recommended wiring standard for this type of communication A/V heavy structure? Assuming it is Cat 6A, and all ...
1
vote
1answer
445 views

What could cause wired internet latency to increase between wired users?

I have 3 roommates (4 people total). Three users, including me, use wired internet. The fourth uses wireless internet (connected to our network). During the evenings, they complain of high network ...
0
votes
2answers
311 views

XP to Win 7 via ethernet cable. No routers, no wireless. They can't ping each other

I've got a windows XP machine and a windows 7 laptop connected by an ethernet cable. The xp has static ip address 169.254.84.221 and the windows 7 has 169.254.84.220. both subnet masks 255.255.255.0. ...
2
votes
2answers
858 views

Why wouldn't an ethernet interface advertise gigabit speed if it's capable?

I have a laptop with a gigabit capable ethernet interface: # lspci -vvnn -s 08:02.0 08:02.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC Gigabit Ethernet [10ec:8167] ...
3
votes
3answers
4k views

How to make a Gigabit Ethernet crossover cable?

Nowadays, I usually make EIA/TIA-568A crossover cables for Fast Ethernet(10/100 Mbps) networks. On these cables, just 2 of the 4 wire pairs are used to comunications(the 2 remaining could be used for ...