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Ask the Expert: Wi-Fi, AI, and Wireless

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  • 1.  Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-04-2021 14:16
    No replies, thread closed.

    Join us! Ask the Expert: Wi-Fi, AI, and Wireless 

    When: Thursday, February 189-10AM EST 
    Where: Here on the Elevate Community 

    Valued Community Members, 

    We invite all Elevate Community members to join our first Ask the Expert session targeted at the ever-important topic of Wi-Fi and how AI is transforming wireless experiences. With the exponential increase in working and learning from home, plus our world's growing reliance on networks, the pressure is ON to deliver the best experiences possible. Get ready... and get ahead! 

    Participating Experts 

    You will hear from and converse with these experts: 


    RSVP
     

    To participate, download the event to reserve the time on your calendar.  When we open the thread (at 9am EST) you can come in and post your question.  If you are unavailable for the event or would like to post your questions in advance, please send them to me and I will post them on your behalf. You will be able to see all the questions and answers after the event. 

    Questions? 

    As always, reach out to me, your community manager, if you need help or have questions about this event. 

    I hope to see you there! 

    ​​​

    ------------------------------
    Jack Joyce
    jjoyce@juniper.net
    ------------------------------​​​


  • 2.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 08:59
    No replies, thread closed.
    Hi everyone,

    The thread is open and the Ask the Expert event is now live! Come ask our experts all your questions about Wi-Fi, AI, and Wireless.

    ------------------------------
    John Joyce
    jjoyce@juniper.net
    ------------------------------



  • 3.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:09
    No replies, thread closed.
    Hello,

    What is the best tool or even an online course I could use or take to help with troubleshooting issues on a Wi-Fi network?  Are there any "Best Practices" to keeping your Wi-Fi network in good health?

    ------------------------------
    Greg Turney
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  • 4.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:24
    No replies, thread closed.
    Hi @gturney , great question, thank you!

    A good way to start is the Mist Master course (https://manage.mist.com , log in or sign up, click "?" in upper right corner of dashboard and click Courses).

    Then, there's the MistAI certification track from Juniper: JNCIA as the entry level, and then JNCIS as the specialist level. VEry highly recommend both:
    https://www.juniper.net/us/en/training/certification/certification-tracks/mistai/ 

    The CWNP provides great vendor-neutral courses: CWNA and CWAP are great for anyone troubleshooting Wi-Fi networks. 

    And Ekahau's training program, headed by Keith Parsons, provides a good troubleshooting course called ECSE-Troubleshooting.

    As for tools, you can't go wrong by starting with Intuitibits' Wi-Fi Explorer Pro, Wi-Fi Signal and AirTool. (if you're a Windows person, go with WinFi). Inexpensive and effective. Couple that with Cloudshark (free trial), Wireshark if you want to get to the packet level.

    Hope this helps!


    ------------------------------
    Jussi / Wi-Fi Janitor / Juniper-Mist
    ------------------------------



  • 5.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:08
    No replies, thread closed.
    This is a question we got from one of our users: "Now that employees are working from home more - and that's expected to continue post COVID too - how could enterprise IT help with better home Wi-Fi?"

    ------------------------------
    John Joyce
    jjoyce@juniper.net
    ------------------------------



  • 6.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:17
    No replies, thread closed.
    Hey @John Joyce , as for the customer question:
    I feel home is the new office, and it's down to enterprise IT to make sure the employees have great connectivity - whether at the office or home.
    I think it all comes down to
    1. Visibility to Wi-Fi user experience (ensure Wi-Fi's awesome for everyone, and if not, find out why)
    2. Connecting to the network and accessing the right resources and most importantly
    3. ​Ensuring the Wi-Fi works well
    4. Ensuring secure connectivity

    Juniper-Mist has a great solution for work-from-home Wi-Fi, with the recently announced AP12 access points (wall plate or desk stand, super-small, Wi-Fi 6), and the Mist Wi-Fi that  ​​provides an outstanding user experience and visibility over the network user experience. The enterprise IT can ensure connections are working smoothly, and the home office user can focus on what's relevant: working efficiently. The solution can be augmented, when necessarily, with Mist Edge device, SRX router, and EX switches.

    Get started here, and let me know if you'd need more info:
    https://www.juniper.net/us/en/solutions/enterprise-at-home/

    Hope this helps!

    ------------------------------
    Jussi / Wi-Fi Janitor / Juniper-Mist
    ------------------------------



  • 7.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:14
    No replies, thread closed.
    Hi experts! How good is the AI at determining if it is a client driver issue versus RF settings or AP hardware giving the appearance of bad WiFi?

    ------------------------------
    Michael Davis
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  • 8.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:23
    No replies, thread closed.
    Hi @michaeld,

    This is actually something we do well.
    1. The SLEs provide a break down of failures by device operating system.  So you can easily compare which devices are failing connection, coverage SLE, etc.
    2. In Marvis we automatically categorize issues as device specific, affecting a small number of devices, or a widespread issue.  Which helps greatly in determining where to place the blame :).


    ------------------------------
    Wes Purvis
    ------------------------------



  • 9.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:19
    No replies, thread closed.
    While Mist takes a "client experience" first approach to it's methodology, there is still a large gap between what is happening on a client device vs what the AP is aware of. Many companies are releasing client agents to deal with this gap. What are Juniper/Mist's thoughts on this and is anything in the works to meet this need?

    ------------------------------
    John Kern
    ------------------------------



  • 10.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:29
    No replies, thread closed.
    Hi @w1f1n00b

    The answer is two fold:

    1. There is still plenty of data available from the AP or infrastructure point of view, so it comes down to how granular your data is to understand all the nuances of the actual user experience. Mist is collecting data for every single user every minute without averaging data, which gives a pretty clear picture on how a user client feels from both RF perspective (our Coverage and Capacity SLEs will cover that) and Networking perspective (where our pre- and post- connection SLEs will track every ARP / DHCP / DNS transaction done by every user). All in all its about the quality and granularity of the infrastructure side data

    2.  We also think that obtaining client level data is important, for instance client driver and hw version and also how the client sees the RF environment. To achieve this we provide our Marvis Client/SDK that can feed that client-level data back to our AI engine and supplement what we already see from the infrastructure side. A good example of this is Roaming Graph supplemented by Client's view of heard nearby APs at the time of the roam:


    ------------------------------
    Slava Dementyev
    ------------------------------



  • 11.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:48
    No replies, thread closed.
    Can you point to any additional information, examples or documentation regarding the Marvis SDK? This is all I can find - https://www.mist.com/resources/mist-marvis-overview/

    ------------------------------
    John Kern
    ------------------------------



  • 12.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:54
    No replies, thread closed.
    @w1f1n00b - Check out the Marvis Client section in the Mist Experience app documentation.

    https://www.mist.com/documentation/mist-experience-marvis-client/

    Wes​

    ------------------------------
    Wes Purvis
    ------------------------------



  • 13.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 10:15
    No replies, thread closed.
    Thank you. I must say PokeMist needs some more explanation :-)

    I'm curious if their has been any discussion on possibly adding some of the SDK functionality to the MistAI app for things like signal survey or admin troubleshooting routines (roaming etc.) . Would be nice to have a mobile tool that integrates directly with Marvis and/or Mist Management.

    ------------------------------
    John Kern
    ------------------------------



  • 14.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:24
    No replies, thread closed.
    Here's another question we get frequently from our users: "What are the key problems that manifest themselves as Wi-Fi problems but where the root cause could be somewhere else?"

    ------------------------------
    Anne Moncure
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  • 15.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:30
    No replies, thread closed.
    Hi @Anne Moncure , here's what I'd have for the user outside of the forum:

    Some of the common "almost Wi-Fi problems" include:
    • Insufficient backhaul to the Internet (this is a very common one). ==> Ask your Internet provider for a bigger / better pipe.
    • VLAN issues: Misconfigured or missing virtual LANs / trunks
    • IP addressing issues: DHCP pool exhausted, bad IP configuration in switches / routers, etc. 
    • Cable problems: At times, cables just simply fail. Luckily, Mist Wi-Fi paired with Juniper switching can detect that automagically.
    ​Everything's bad Wi-Fi, until it's proven not to be bad Wi-Fi ;)

    ------------------------------
    Jussi / Wi-Fi Janitor / Juniper-Mist
    ------------------------------



  • 16.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:32
    No replies, thread closed.
    Is it recommended to have 'safety rails' on RRM settings or leave it wide open?

    ------------------------------
    Michael Davis
    ------------------------------



  • 17.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:40
    No replies, thread closed.
    @michaeld I will never argue around adding constraints for RRM.  Though typically the biggest issue with RRM solutions is they turn the transmit power down too low.  This typically is not an issue for Mist due to how the algorithm has been constructed, and also we use 8 dBm as default bottom limit for both 2.4 and 5 GHz.  Depending on the environment, for example carpeted enterprise, I'll usually drop the min 2.4 Tx power down do 5 dBm.  Occasionally I'll lower the max 2.4 GHz Tx power as well, but that's not as common.

    ------------------------------
    Wes Purvis
    ------------------------------



  • 18.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:35
    No replies, thread closed.
    "Auto" channel and power is relied on by many admins across many hardware vendors. Mist seems to have one of the only true AI/ML solutions for this problem. What real world examples, proof, and/or validation has been done to prove its relevance and/or to compare it to other vendors , and where are its limitations (when is manual config still required)?

    ------------------------------
    John Kern
    ------------------------------



  • 19.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:50
    No replies, thread closed.
    Hi @w1f1n00b-

    We typically recommend manual channels for Mesh and that's about it.  Almost all of our customers use RRM, with Mist it's one of those things that just works.  New and existing customers are constantly impressed with just how good of a job it does.  The primary goal of Mist RRM is to improve the coverage and capacity SLEs.  The best example I can give of the power of Mist RRM is a 1500+ AP warehouse.  The place is absolutely massive, has multiple levels, and is an extremely harsh RF environment.  RRM just does its job.

    Wes



    ------------------------------
    Wes Purvis
    ------------------------------



  • 20.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:42
    No replies, thread closed.
    Here is another frequently asked question: "What are the biggest problems in wireless today? Is there a typical root cause, and are there any "low hanging easy fixes" to these problems?"

    ------------------------------
    John Joyce
    jjoyce@juniper.net
    ------------------------------



  • 21.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 09:46
    No replies, thread closed.
    Hi @John Joyce , there's just two problems:
    1. I can't connect
    2. My connection's bad

    ;)

    More seriously speaking, typically the problems are related to either low coverage, or high channel interference / utilization, leading to low signal-to-noise ratio.

    To overcome the problems quickly, typically the problem is add one more access point / extender to the problematic area. It might work, or not.

    If you have Juniper-Mist Wi-Fi, the Service Level Expectations and Marvis typically will tell you what the problem is quickly.
    Otherwise, I'd recommend quickly diagnosing the problematic area with a relatively simple tool such as​ Wi-Fi Explorer and seeing if it's a simple coverage or channel interference problem or such.

    Feel free to reach out in case of any other questions.

    ------------------------------
    Jussi / Wi-Fi Janitor / Juniper-Mist
    ------------------------------



  • 22.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:46
    No replies, thread closed.
    Hello,

    How does/can the 5,000 PSK limit  on Personal WLANs scale in a University dorm/housing setting with greater than 5k users? This seems like a great feature for students with their 'Consumers devices' in housing areas, but large Universities have more students living on campus.

    ------------------------------
    Kyle Nielsen
    ------------------------------



  • 23.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:55
    No replies, thread closed.
    Hello Kyle,

    if your campus is spread across multiple buildings that are not physically interconnected, then you could split your campus into different sites, each site having 5000 PSK limit. In a typical university deployment a dorm would be a site, where you would still fit into 5K PSK limit.
    today we also support RADIUS based PPSK via MAC Auth, where you would effectively offload PSK lookup to an external PSK database. Thats one way of achieving the scale you need right now.

    Saying that we are also working on a cloud scaled PPSK where PSK limit wont apply anymore. Please reach out to us if you'd like to hear more info.

    thank you,
    Slava

    ------------------------------
    Slava Dementyev
    ------------------------------



  • 24.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 10:04
    No replies, thread closed.
    Cloud scaled PPSK would be great! Would love to integrate it in our Wiflex Solution.

    ------------------------------
    JONAS DEKKERS
    ------------------------------



  • 25.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 10:05
    No replies, thread closed.
    Thank you, that helps. In the documentation I didn't see that the 5k limit was per site, that's great! I was working under the assumption that it was per organization. I do have a few other question around this topic that I would like to discuss with someone.

    ------------------------------
    Kyle Nielsen
    ------------------------------



  • 26.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:52
    No replies, thread closed.

    Why is Mist such an awesome solution?

    Your are doing a great job guys!



    ------------------------------
    JONAS DEKKERS
    ------------------------------



  • 27.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 09:53
    No replies, thread closed.
    Thank you for all your responses so far, one more question for you. Does the AI look at protocols supported by clients and optimize the environment based on that?

    ------------------------------
    Michael Davis
    ------------------------------



  • 28.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

     
    Posted 02-18-2021 10:04
    No replies, thread closed.
    Thanks for hanging out with us, @michaeld!

    Yes, the system does make decisions based on client behavior.  For example. if there are lots of 2.4 clients, we are less likely to disable 2.4 GHz radios with the auto cancellation RRM.

    Wes​

    ------------------------------
    Wes Purvis
    ------------------------------



  • 29.  RE: Ask the Expert: Wi-Fi, AI, and Wireless

    Posted 02-18-2021 10:10
    No replies, thread closed.
    Thank you so much for your great questions today, and a big thank you to our experts for offering their time and knowledge for this event. We hope everyone was able to learn something today, and we look forward to inviting you to more Ask the Expert events in the future!

    ------------------------------
    John Joyce
    jjoyce@juniper.net
    ------------------------------