Презентации / 5_WirelessFrames

}По дампу с Лр выполнить подсчет кадров,

}Таблицу, название сети, статистику по сети и выводы разместить в отчет.

}Агрегация фреймов (несколько фреймов в одном состязании)

}Block ACK req

}RIFS (Reduced IFS)

T

R

DIFS

T

R

T

R

◦Management:

–Beacon, probe request, probe response

–Authentication request, authentication response

–Association request, association response

–Deauthentication, reassociation request, reassociation response

–Announcement Traffic Indication Message (ATIM)

◦Control:

–Request to send (RTS), clear to send (CTS), acknowledgment (ACK),

–Power Save Poll (PS-Poll),

◦Data:

–Simple data

–Null function (empty frame)

Authentication

Requests

Authentication

Response

Association

Requests

Association

Response

AP

Authentication (Bytes)			Association Requests (Bytes)			Association Response (Bytes)
			Capability information	2		Capability information	2
Auth. alg. no.	2		Listen interval	2		Status code	2
Auth. trans. seq. no	2		SSID	2 to 34		Association ID	2
Status code	2		Supported rates	3 to 10		Supported rates	3 to 10
Challenge text	3 to 257		Ext. supported rates	3 to 257
						Ext. supported rates	3 to 257

OR

AP

						Reassociation Requests (Bytes)
									Reassociation Response (Bytes)
						Capability information	2
									Capability information	2
	Deauthentication (Bytes)					Listen interval	2
									Status code	2
						SSID	2 to 34
	Reason code			2
									Association ID	2
						Current AP adress	6
	Disassociation (Bytes)								Supported rates	3 to 10
						Supported rates	3 to 10
	Reason code			2		Ext. supported rates	3 to 257		Ext. supported rates	3 to 257

Voice

Queue

Video

Queue

Best Effort

Queue

Guest

Queue

I am falling asleep.

I will wake up for	TIM shows that I have	AP
next Beacon.	Traffic for you.

Beacon

Please send my frame.

PS-Poll Frame

Bytes 2				2			6											6											4