All Questions
7
questions
5
votes
3
answers
6k
views
How to debug L1 Auto negotiation issues?
One of our Linux hosts has started switching its gears recently. While checking the interface speed, I could see that the interface has switched down to 10Mbps. The NIC and Switch are capable of 1G ...
- 1,412
0
votes
1
answer
124
views
Unconnected cable in a switch
A cable plugged into a switch but unconnected on the other end, might lead to any problem in a "noisy" environment (industrial)?
It's short, 50 cm, but there are motors, inverters, power supplies ...
- 103
4
votes
1
answer
619
views
How do data packets travel without merging?
I have been very interested in networking for quite a while, and I have been wondering this question. I've been thinking about this in complete binary, meaning how does a 0 of a data packet not get ...
- 43
1
vote
3
answers
1k
views
How can I programmatically, physically connect ethernet ports?
I want to plug and unplug two ethernet cables from a little test script. I thought a fancy managed switch would have this capability but it turns out to only allow me to create VLANs and optionally ...
- 213
1
vote
3
answers
187
views
Gigabit NIC stuck on 100mbs
My main problem started when i installed 4 gigabit NIC into my computer.
The 4 NIC are connected to GB linksys switches, each in different location,1 of the 4 gives GB and the others are stuck on 100 ...
- 11
5
votes
2
answers
231
views
I need the functionality of a pair of patch panels but I don't want to run one cable per port
My needs will be met by two patch panels with dedicated copper running between them for each port. But I'm looking at a few hundred ports and I'd rather not have to run a few hundred cables.
...
- 53
6
votes
1
answer
5k
views
What is the correct way to determine SFP+ Direct Attach cable compatibility between switches and NICs?
I'm contemplating a 10 Gigabit link between an Intel x520 NIC and a Cisco SG500X switch. These two would be within 5m of one another, so using one of the Cisco SFP+ passive Direct Attach cables like ...
- 904