topic Re: Minimum RSSI for Data WLAN in Wireless

Minimum RSSI for Data WLAN

CiscoJon — Mon, 05 Jul 2021 18:39:21 GMT

I noticed on Cisco live material (link below) it recommends -67 dBm RSSI is minimum for a WLAN. I know it was always -80 dBm for a data and -67 dBm for voice WLAN from various Cisco books and course materials but has this recommendation changed now? https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKEWN-2019.pdf

For the purposes of Cisco exams is it still -80 dBm?

Re: Minimum RSSI for Data WLAN

Daniel Ordóñez Flores — Thu, 06 Feb 2020 02:46:07 GMT

Hi @CiscoJon

I don´t think the recommendation has changed, I believed the documents is talking about a good practice, because if your haves these values (-67dbm, 25SNR, 20% for overlap) you network will be ready to offer a good service, I mean, If is ready for voice, for sure will be ready for data.

books for exam still talking about (-67dbm, 25SNR, 20% for overlap) for voice services.

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Re: Minimum RSSI for Data WLAN

CiscoJon — Thu, 06 Feb 2020 09:49:30 GMT

Right, when they talk about VOICE they always specify -67 dBm minimum RSSI but they used to recommend a lower minimum for data of -80 dBm for a data only WLAN. Is the minimum for all types (data, voice, high density and location) now -67 dBm RSSI?

Re: Minimum RSSI for Data WLAN

patoberli — Thu, 06 Feb 2020 15:44:46 GMT

Today many people tend to use video and audio conferencing on their notebooks, or even calling with WhatsApp. For those cases a good wireless signal is to be preferred. Also most much faster speeds from recent standards can only be reached with a strong signal. Roaming also works much better with enough overlap at a medium signal strength.