过滤信息，得到想要的帧进行分析。

http://www.networkcomputing.com/networking/wifi-troubleshooting-using-wireshark/1555390832

http://www.semfionetworks.com/blog/wireshark-most-common-80211-filters

Filter for all frames with a specific MAC address

wlan.addr == mac_address

Filter for all Management frames

wlan.fc.type == 0

Filter for all Control frames

wlan.fc.type == 1

Filter for all Data frames

wlan.fc.type == 2                        

http://www.semfionetworks.com/uploads/2/9/8/3/29831147/wireshark_802.11_filters_-_reference_sheet.pdf

wireshark 学习 3 display filter