RE: [WIRELESS-LAN] Android Rogue Hunting App

2020-01-26 Thread Letts, Richard J
FYI In order for an application to do WIFI scanning in Android 10 You have to turn on Location Permissions Specific details here: https://developer.android.com/guide/topics/connectivity/wifi-scan (I use Wifi analyser on android 10. It works OK, but it’s not a quality tool for locating rogues.

RE: [WIRELESS-LAN] Any experience of losses through CLT (Cross Laminated Timber) Floors?

2020-04-02 Thread Letts, Richard J
Take a look at this article: https://ieeexplore.ieee.org/document/8740123 W. Conniott, J. Vieira, S. Monteiro and R. F. S. Caldeirinha, "Low Cost Radio Shielding Effectiveness using Carbonised Wood," 2019 13th European Conference on Antennas and Propagation (EuCAP), Krakow, Poland, 2019, pp. 1-4.

RE: Are You Ready for WiFi6E

2020-04-25 Thread Letts, Richard J
We have a very long / continuous planning horizon: it's not only the cabling to the AP that needs a boost, but the installation of 220V circuits to the PoE switches to support UPOE/POE+/4PPoE. (because a regular 120V outlet isn't going to cut it). I had to ask for electrical improvements last Oc

RE: Cisco pre-DNA Spaces Location Service, Contact Tracing

2020-05-29 Thread Letts, Richard J
The stream of authentication records with called-station-id and account should be enough to do rudimentary contact tracing over a broad area (coverage of an AP) I'd want to avoid the slippery slope of this being used as a proxy for class attendance and their academic record because I don't want

RE: WLC 8.10.121 Deferred

2020-06-26 Thread Letts, Richard J
We had that problem with 350x series AP ~ 18 months ago. I'll have to dig out the exact version number number but it was on the 8.3/8.5 train. There was a memory leak in the AP. Clients were not moving from authentication to the AP through the association phase on the controller. (these terms se

RE: High DNS Lookup Time - Aruba Sensor

2020-07-24 Thread Letts, Richard J
I had experience of an aruba product flagging high DHCP response times, and it was somewhat frustrating because there was no evidence in the DHCP server logs that anything was amiss: every received packet had a subsecond response time, there were no drops on any of the network interfaces statis

RE: [EXTERNAL] Re: [WIRELESS-LAN] Antenna mounting suggestions

2020-08-31 Thread Letts, Richard J
I'm wondering if any campus has had success in designing wireless into the architectural specification? Just as crime prevention through architectural design and landscape design strives to reduce crime by providing subliminal or overt cues that affect movement throughout a building isn't exter

RE: WLC interface groups?

2019-08-28 Thread Letts, Richard J
I really recommend using a big block of private IP addresses and NAT them (I am on a 10.x.x.x /17 right now) - this allows you to have really big subnets where needed, with reasonable DHCP lease times. DHCP goes through to our BlueCat servers. One can then arrange to have enough public IP addr

RE: WLC & ISE combo issues

2019-10-08 Thread Letts, Richard J
What version of core on the WLC / what model of AP? We had an issue at the start of the year with version of code on cisco 3500 series AP where clients would successful authenticate with the AP, but the association would never get passed from the AP through to the controller and thence on to