Welcome to Network Engineering Stack Exchange
Network Engineering Stack Exchange is a question and answer site for asking questions about professionally managed networks in a business environment. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about network engineering.
We're a little bit different from other sites. Here's how:
Ask questions, get answers, no distractions
This site is all about getting answers. It's not a discussion forum. There's no chit-chat.
Good answers are voted up and rise to the top.
The best answers show up first so that they are always easy to find.
The person who asked can mark one answer as "accepted".
Accepting doesn't mean it's the best answer, it just means that it worked for the person who asked.
Using sound waves in layer 1
Yes it’s possible. In fact, Amazon Dash buttons use ultrasound as a medium.
It's been done. I used to have a 300-baud acoustic layer 1 device.
Get answers to practical, detailed questions
Focus on questions about an actual problem you have faced. Include details about what you have tried and exactly what you are trying to do.
- Specific issues with network engineering
- Real problems or questions that you’ve encountered
- Operating, maintaining, purchasing or managing an enterprise / service provider network
- Planning or designing an enterprise / service provider network
- Model or product line features and differences
- Lab scenarios involving on-topic equipment
- Tools used by network professionals
- Design or theory of protocols used to operate a network (IP, TCP, routing protocols, STP, etc.)
- Content delivery networks
- Production troubleshooting or problem resolution
- Physical infrastructure (standard color coding of cables, types of fiber, etc.)
- Implementing and enforcing network security or policies
- Networks must be under your direct control (if the network is not under your control you will not likely be able to provide the information required to answer your question)
- Hardware/software that has a paid support option from the manufacturer (enterprise/provider class products, some small business class devices)
Not all questions work well in our format. Avoid questions that are primarily opinion-based, or that are likely to generate discussion rather than answers.
Questions that need improvement may be closed until someone fixes them.
Don't ask about...
- Anything not directly related to network engineering
- Questions that are primarily opinion-based
- Questions with too many possible answers or that would require an extremely long answer
- Residential/home networking
- Consumer grade products
- Installation, configuration, or use of applications not generally considered to be tools used by network professionals
- Education, certification, or homework
- A network under someone else's control
- Product, service, or learning material recommendations
- Configuring an application or device to work on the network
- Protocols above L4 in the OSI model (e.g. HTTP, FTP, etc)
- Bypassing network security or policies
- Historical trivia that does not allow for a concise and non-subjective answer or is trivial/irrelevant to modern networking
You earn reputation when people vote on your posts
Your reputation score goes up when others vote up your questions, answers and edits.
As you earn reputation, you'll unlock new privileges like the ability to vote, comment, and even edit other people's posts.
|Vote down (costs 1 rep on answers)
At the highest levels, you'll have access to special moderation tools. You'll be able to work alongside our community moderators to keep the site focused and helpful.
|Edit other people's posts
|Vote to close, reopen, or migrate questions
|Access to moderation tools
Improve posts by editing or commenting
Our goal is to have the best answers to every question, so if you see questions or answers that can be improved, you can edit them.
Use edits to fix mistakes, improve formatting, or clarify the meaning of a post.
Use comments to ask for more information or clarify a question or answer.
You can always comment on your own questions and answers. Once you earn 50 reputation, you can comment on anybody's post.
Remember: we're all here to learn, so be friendly and helpful!
Unlock badges for special achievements
Badges are special achievements you earn for participating on the site. They come in three levels: bronze, silver, and gold.
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