Hablamos de las conferencias WLPC en Phoenix y de los deep dives que estamos preparando de Seguridad, drones, análisis de paquetes, antennas y WLANPi, de WiFiNow en Brasil, de filtros en Wireshark con botones y barras de despliegue, capturas remotas directamente desde Wireshark con el WLANPi, de educación continua y post grados en seguridad, de generar señales sin beamforming, de problemas de firmware en controladores Cisco 9800 y como resolverlos y un poco de análisis de espectro con Ekahau.
Notas del chat: 00:27:55 Ariadna: https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html 00:28:27 Victor Bautista: Version actual 8.2.166.0 00:29:24 Jose Alcala: https://www.cisco.com/c/en/us/td/docs/wireless/compatibility/matrix/compatibility-matrix.html 00:32:02 juan ibañez: https://www.cisco.com/c/en/us/support/docs/field-notices/725/fn72524.html 00:41:33 JC Luna: https://www.mathworks.com/help/wlan/getting-started-with-wlan-toolbox.html 00:42:47 Victor Bautista: https://www.wiresandwi.fi/blog/cisco-wlc-or-ap-device-certificate-expired-what-you-can-do 00:58:32 Manuel Pérez: https://es.mathworks.com/pricing-licensing.html?prodcode=ML&intendeduse=comm 01:07:30 Adolfo Zameza: Netsh WLAN show drivers Netsh WLAN show wirelesscapabilities netsh wlan show wlanreport (requiere permisos elevados) https://support.microsoft.com/en-us/windows/analyze-the-wireless-network-report-76da0daa-1db2-6049-d154-7bb679eb03ed
Hablamos de la lucha constante con lo que promete mercadeo, de lo delicado que es el Wi-Fi en hospitales, de LiDar, de Wi-Fi HaLow, y de portales cautivos. Mucha información y valiosos comentarios.
Notas del Chat: 00:19:45 David Montes: https://www.youtube.com/watch?v=Ich7WML4KBA 00:32:08 Ferney Muñoz: https://www.youtube.com/watch?v=JQN0R5MrB50 00:34:42 Jose Alcala: https://esbologistics.com/exotec/ 01:38:33 gustavogomezjr: better user experience 01:38:55 gustavogomezjr: mejor experiencia para el usuario
Hablamos del valor de las certificaciones y del propósito continuo de seguir estudiando y aprendiendo, Gustavo Gómez Jr. compartió su experiencia. Alex Vianna de Brasil inició conversación acerca de Ekahau Private 5G y proyectos agropecuarios donde se requiere Wi-Fi, 3G, 4G, 5G, y LoRa.
Hablamos de la Conferencia para Profesionales de Redes Inalámbricas [WLPC] en Phoenix en Febrero 4-9, 2023. De la conferencia WiFiNow en Río de Janeiro en Marzo 27-29, 2023. De ChatGPT y métodos para averiguar si un ensayo lo escribió AI o si lo hizo un ser humano. Finalmente hablamos de los propósitos para el 2023 y al parecer, las certificaciones se llevan el primer puesto. Como bono, David García nos compartió su talento al tocar la guitarra. No sé si lo deberíamos llamar Paco de García de ahora en adelante?.
Más pruebas con 6GHz ahora con más APs y más clientes. Aparte del Aruba 635, agregamos un Linksys MR-7500 y un Ubiquiti U6 Enterprise, y en los clientes tenemos un Pixel 6 y un Pixel 6 Pro. Seguimos viendo inconsistencias en el comportamiento de clientes y estaremos a la espera de más equipos para probar.
Notas del Chat: 00:54:45 Luis Gimenez: 8.10.0.2_84367 (Recommended) 00:54:55 Luis Gimenez: firmware de mi aruba 01:04:27 Jesús Romero: Hola Luis, puedes decir en cuáles aps EnGenius has probado por favor 01:06:21 Luis Gimenez: AP336 01:16:11 Ferney Muñoz: wlan.sa == 8a:02:fa:31:da:49
Seguimos explorando el comportamiento de ciertos dispositivos en 6GHz y el Aruba 635. En esta ocasión ensayamos sin éxito el Google Pixel 6 Pro y tratamos con varios canales y notamos que el AP 635 no hace cambios manuales.
Notas del Chat: 00:12:30 Fernando Carranza: https://cambiatealinux.com/error-al-conectar-por-ssh-no-matching-host-key-type-found 00:35:34 Mark Houtz: https://store.ui.com/collections/unifi-network-wireless/products/u6-enterprise 00:59:05 Ferney Muñoz: https://www.jiribrejcha.net/2022/11/google-pixel-6-wi-fi-6e-scanning-and-6-ghz-ssid-discovery/ 01:02:00 Ulises Cazares: show ap allowed-channels
Aprendimos del comportamiento del Aruba 635 con un portátil Acer Intel Evo con Killer Wi-Fi, tuvimos que actualizar los controladores para que funcionara ya que veíamos las redes de 6GHz pero no nos podíamos conectar. El Samsung S22 Ultra nunca vio las redes en 6GHz.
Notas del Chat: 01:00:52 Sergio Acuña: https://www.intel.com/content/www/us/en/products/sku/211485/intel-killer-wifi-6e-ax1675-xw/downloads.html 01:05:14 Diego Huertas: https://www.reddit.com/r/S22Ultra/comments/tavzda/anyone_having_issues_with_wifi_6e/ 01:05:30 Diego Huertas: Problemas en Samsung Galaxy S22 Ultra
Sesión navideña donde con Sergio Acuña y Santiago Carmona jugamos con un Aruba 635, un iPad Pro con WiFi 6E, un Ekahau Sidekick v2 con Ekahau AI Pro, WiFi Explorer Pro 3, capturas remotas con Airtool 2 y dos WLANPi Pros. Demos, pruebas y actualizaciones de firmware en vivo. ¿Qué más se le puede pedir a esta hermosa navidad?
If you haven’t read Jiri Brajcha’s blogs showing test results with iPad Pro and Cisco 9136 AP, I highly recommend you do so at https://www.jiribrejcha.net He does an excellent job at testing iPad’s band preferences based on channel width and transmit power levels. In this blog, I will share my findings on other tests using an iPad Pro with Wi-Fi 6E and an Aruba AP 635.
Lab Config
ArubaAP635: FW 8.10.0.1 LSR & 8.11.0.1 SSR 2.4 GHz – channel 1, 20MHz, 8dBm, SSID: Aruba_635_2.4_8dBm 5 GHz – channel 36, 20MHz, 14dBm, SSID: Aruba_635_5_14dBm 6 GHz – channel 101 [PSC], 80MHz, 16dBm, SSID: Aruba_635_6_16dBm SSID: Aruba_635_6_Guest Acceltex Accelerator v2 Mikrotik hAPac2 iPad Pro 11″ 4th Gen,OS version 16.1 (20B82) MacBook Pro M1: Ekahau AI Pro 11.1.3 with Sidekick v2 WiFi Explorer Pro 3: WLANPi Pro configured as remote sensor AirTool 2: WLANPi Pro configured as remote sensor for multi-source captures
In this lab I did not test with the same SSID across all three bands. As you can see, I had one SSID per band, with two SSIDs being advertised in 6GHz. With the initial setup, the iPad could see all SSIDs.
SSIDs on iPad
In WiFi Explorer Pro 3, I added a WLANPi Pro as a remote sensor and could see all networks without any problems.
SSIDs on WiFi Explorer Pro 3
Ekahau discovered all networks as well including the 6GHz SSID.
6GHz Ekahau
In Airtool 2, I added another WLANPi Pro as a remote sensor and in Multi-Source Capture… mode, I selected channels 36 and 101 [PSC] and performed packet captures.
Airtool 2 Multi-Source Capture
I could see the beacon in 5GHz with the Reduced Neighbor Report advertising both networks in channel 101 with their respective short SSIDs.
Short SSID Transmitted
Short SSID Guest [Non-transmitted]
On a separate capture I obtained beacons in channel 1 and 2.4 also had RNR. Beacons on channel 101 showed the Aruba_635_6_16dBm SSID with the Multiple BSSID element and the Aruba_635_6_Guest spelled out.
2.4GHz Beacon with RNR
5GHz Beacon with RNR
6GHz Beacon with Multiple SSID element
With these configurations, the iPad could successfully associate to the networks in 2.4GHz, 5GHz, and 6GHz.
I disabled the 2.4GHz and 5GHz radios in the Aruba AP 635 and now the iPad could not see the SSIDs being advertised in 6GHz. Ekahau and WiFi Explorer Pro 3 continued to see the 6GHz SSIDs. I also disabled the 2.4/5GHz radios while the iPad was associated to 6GHz and it worked until the iPad went into sleep mode, when the iPad was awaken, it could not associate anymore even if the network name and credentials were added manually.
iPad Pro 6GHz SSID not found
As Jiri mentioned in his blog, the iPad relies on the RNR announced in 2.4/5GHz to discover 6GHz networks. Note that in my test, none of the SSIDs announced in 6GHz were being advertised in either 2.4 or 5GHz. Each band had its own SSID, but because of the RNR, the 6GHz SSIDs were discovered by the iPad and the iPad was able to connect to 6GHz without any issues.
Now with 6GHz only operating in the AP, I was expecting to see Unsolicited Probe Responses and Fast Initial Link Setup [FILS] frames, but I could only see beacon frames advertised in 6GHz. With the help of Santiago Carmona from Colombia, we realized that we had Firmware 8.10.0.1 LSR running. I updated the AP to 8.11.0.1 SSR and now FILS frames were being transmitted.
6GHz Beacons and FILS
One thing that got my attention on the FILS, the Short SSID for the transmitted SSID was backwards from the originally generated hexadecimal value. Instead of being e468b379, on the FILS it was listed as 0x79b368e4. The non-transmitted SSID Aruba_635_6_Guest’s short SSID was listed as generated [0xb8af9480]
