THE BAD-FI

IT AIN’T ALL BAD, FOLKS! Really like how Cisco places the AP in the middle of the antenna patterns. Makes it much easier to visualize them. 👍 Wish ALL vendors did this. via: I like how these antenna patterns show the AP in the middle. pic.twitter.…

IT AIN’T ALL BAD, FOLKS!

Really like how Cisco places the AP in the middle of the antenna patterns. Makes it much easier to visualize them. 👍

Wish ALL vendors did this.


via:


Scott’s blog: https://www.mostlynetworks.com

Now that we all understand antennas patterns can we please just install the APs correctly positioned?

Thank you.

The Hadron Collider of Wi-Fi! Shanghaied from: Wrong. Try again. #WiFail http://t.co/W7iiyWu3Ac — Andrew von Nagy (@revolutionwifi) September 30, 2014 Andrew’s Ridiculously Awesome Blog: http://www.revolutionwifi.net Remember how we talked…

The Hadron Collider of Wi-Fi!

Shanghaied from:

Andrew’s Ridiculously Awesome Blog: http://www.revolutionwifi.net

Remember how we talked earlier about knowing/understanding your antennas patterns? Here, you’re basically shooting APs into each other and not much else.

Well, sort of. :-)Folks, watch those fancy new printers. Make sure you disable the wireless if you’re not using it. If you are, at least password protect it.But, it’s 2014, why are you using a printer?And, why do you hate the Earth?

Well, sort of. :-)

Folks, watch those fancy new printers. Make sure you disable the wireless if you’re not using it. If you are, at least password protect it.

But, it’s 2014, why are you using a printer?

And, why do you hate the Earth?

The worst part? This was done ON PURPOSE! Purposely lifted from: #WLPC another example of bad #wifi engineering. This is a high school gym, running @ArubaNetworks. pic.twitter.com/Ib6E0SeOSL— Ian Beyer (@ianbeyer) September 12, 2014 Ian’s Blo…

The worst part?

This was done ON PURPOSE!

Purposely lifted from:

Ian’s Blog: http://blog.ianbeyer.com

 

SO, SO, MANY THINGS:

  1. 40MHz channels on 2.4GHz?

     Are you mad?! There are only 3 non-overlapping channels in 2.4GHz. 20MHz is a MUST if you don’t want to stomp all over everyone’s channels.

    It’s one thing do it at home (please don’t), but in an enterprise environment with lots of APs? Crazy, Coo-Coo, Loco, puffs!

  2. APs using the SAME Channel!

    It’s bad enough that you’re using 40MHz, but now on the SAME CHANNEL?!

  3. No 5GHz.

    At all? WHAT?! It’s 2014, man/gender-neutral tech-person!

Somebody flip the “40MHz intolerant” bit.

You want free wi-fi?  You want free wi-fi?! HOW DO YOU LIKE ME NOW?! Misappropriated via - Keith’s Blog: http://wirelesslanprofessionals.com Zaib’s Blog: http://wlanbook.com - Like in the earlier post, know your antennas patterns and m…

You want free wi-fi?  You want free wi-fi?!
HOW DO YOU LIKE ME NOW?!

Misappropriated via -

Keith’s Blog: http://wirelesslanprofessionals.com

Zaib’s Blog: http://wlanbook.com

-

Like in the earlier post, know your antennas patterns and make sure your APs/Antennas are correctly positioned.

I’d like to believe this picture speaks for itself. But, then that would be crazy. Purloined with a heavy heart from: Want to double Wi-FI capacity? Just mount a second AP right next to the first, on a big piece of metal. #WiFiFail pic.twitter.com/y…

I’d like to believe this picture speaks for itself. But, then that would be crazy.

Purloined with a heavy heart from:

Learn how not to do this at http://WLANPros.com

—

ISSUES:

  1. It’s metal, man!
  2. It’s METAL, man!
  3. IT’S METAL, MAN!
  4. Also, APs that close to each other are gonna interfere, especially on 2.4GHz even of they’re on different channels.

tumblr_nbnkemd2gA1qbd6x4o2_r1_1280.jpg
tumblr_nbnkemd2gA1qbd6x4o1_r2_1280.jpg

I mean, what else could they do? That ceiling is just too low, right?

Stolen, like a Boss, from:

GT’s Blog: https://gthill.wordpress.com

-

SO, WHAT’S WRONG?

Those antennas should be pointing up. Why? Because the antenna pattern of those omnis are like a flattened balloon. 360° HORIZONTALLY, but vertically not so omni. As you raise power the “balloon” gets flatter and the signal above and below get shorter.

Basically, here you have a balloon the long up/down, but short left and right?

The images above are EXAGGERATED to make the point and are not the actual antenna pattern.

The take away here? Know what the antennas pattern of your APs are and install the AP to make the most of the direction the RF is going.

Is this a wireless tuna on rye? Securing your lunch? What’s the throughput on that PB&J? “Acquired” with malice aforethought from: linksys + ziplock bag != outdoor AP #wififail pic.twitter.com/v3nsU6t9Yy— Zaib Kaleem (@WLANBook…

Is this a wireless tuna on rye? Securing your lunch? What’s the throughput on that PB&J?

“Acquired” with malice aforethought from:

Zaib’s Blog: http://wlanbook.com

Did I mention he makes WiFi Scanner for Mac?

He does.

-

Now, do we even need to discuss why wrapping an electrical device in a zip-lock bag is not a good thing?

Also, it’s STILL not an outdoor AP. Zip-lock notwithstanding.

And how about not using consumer grade equipment for commercial use?

At this point who cares about that poor antenna placement? It probably burst into flames immediately after the picture was taken! :-)

the main issues here? Well, for one that’s just begging to be smacked by somebody. Also, ceiling APs are meant to be ceiling mounted horizontally. The antenna pattern is most likely focused downward while being “omni” on the horizo…

the main issues here? Well, for one that’s just begging to be smacked by somebody. Also, ceiling APs are meant to be ceiling mounted horizontally. The antenna pattern is most likely focused downward while being “omni” on the horizontal.

via -

Michael Blog: https://vmstan.com

Eventually, that AP is gonna have to connect to the the network. Gonna be kinda hard of you can’t even find the switch! Never mind the fire hazard!

Eventually, that AP is gonna have to connect to the the network. Gonna be kinda hard of you can’t even find the switch!

Never mind the fire hazard!

Besides the obvious - above the ceiling, and surrounded by metal, how easy is it to find APs when you need to? Yeah, let’s stop doing this please.

Besides the obvious - above the ceiling, and surrounded by metal, how easy is it to find APs when you need to?

Yeah, let’s stop doing this please.

Another, “why does our wireless suck?”, expedition. After spending some time searching for APs we found them here - in the closets, inside METAL boxes! The metal is bad enough, but then you wrap the AP in 30ft of cable? What?! Well, at l…

Another, “why does our wireless suck?”, expedition.

After spending some time searching for APs we found them here - in the closets, inside METAL boxes! The metal is bad enough, but then you wrap the AP in 30ft of cable? What?!

Well, at least ONE of the antennas is positioned correctly. You’re half-way there! :-P

 We don’t really need to discuss this, do we?

 We don’t really need to discuss this, do we?