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Wi-Fi Packet Capture Best Method

asked 2018-05-30 12:40:24 +0000

DanDude gravatar image

updated 2018-05-30 13:00:22 +0000

I am testing AP throughput performance in an isolation chamber. I would like to use the approach that gives me the most radio-layer info (MCS, Link-rate...). What are the tradeoffs in the 2 methods: 1 - Wi-Fi client PC with wireshark "inline" capture. OR 2 - Same Wi-Wi client, but capture packets with a separate USB sniffer "monitor mode" capture

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Additional info: WiFi Client=PCE-AC88 PCIE Adapter with 4 Antennas. WiFi USB Sniffer for #2 = ASUS USB-AC68 Dual-band AC1900 USB 3.0 Wifi Adapter

DanDude gravatar imageDanDude ( 2018-05-30 12:58:33 +0000 )edit

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answered 2018-05-30 14:30:41 +0000

Bob Jones gravatar image

Capturing on the same interface in monitor mode while also attempting to use in managed mode usually yields unusual results. In your particular case, frames sent from the adapter will not likely contain all the radiotap information that is available due to the fact that the capture occurs prior to transmission, so actual datarate, MCS index, signal strength, encryption key, encoding, etc. is not available yet.

Always best to use a separate adapter for capture so that you are not evaluating with the same tool as you are testing with. This is generally true in many areas, but particularly true here.

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Asked: 2018-05-30 12:40:24 +0000

Seen: 1,055 times

Last updated: May 30 '18