Question about 802.11 wireless networks - Tilted Forum Project Discussion Community

the420star · 11-28-2004, 06:19 PM

Does anyone know what the standard packet length is, its really hard to explain why i need to know, but it comes down to i need to know how long the shortest transmit cycle is. Even better would be if somone could point me to a page with this information on it.

1010011010 · 11-29-2004, 04:15 PM

http://www.sss-mag.com/pdf/802_11tut.pdf

I don't think you mean 802.11, though. The actual specification for 802.11 and it's actually useful derivatives are available from IEEE.org.

Mephisto2 · 11-29-2004, 04:38 PM

the420star,

Can you provide a more accurate description of what exactly you need to know. There's no such thing as a standard packet size when talking about 802.11 networks. Packets is the term used to refer to IP and is associated with the Network Layer. IP packets can be of varying size (the maximum "normal" size being 1512) - check out http://www.cisco.com/warp/public/105/38.shtml

802.11 standards refer to the Data Layer. Information in this layer is sent in frames.

Check out the two following white papers. They may be of some help.

A Technical Tutorial on the 802.11 standards - http://www.sss-mag.com/pdf/802_11tut.pdf

Wireless Local Area Networks and the 802.11 Standards - http://www.cisco.com/warp/public/784...whitepaper.pdf

You may also want to check out the following web-site on Ethernet frame types: http://www.neurobit.com/ethernet_frame_types.htm

Mr Mephisto

scott_p_1 · 11-29-2004, 05:05 PM

Checking my Networking notes, an 802.11 frame is 2346 bytes total maximum (including headers and trailers). The frame body is 2312 byes max

ratiocination · 12-03-2004, 01:01 AM

I use 802.11 BG network on Intel PRO wireless 802.11 BG card . You can learn more about these networks at http://www.homenethelp.com/802.11b/index.asp

What do you mean by packets? I am not an expert at this, but I think that the size of the packets can vary. It depends on the information that is being sent or received.

HogansGoat · 12-03-2004, 06:04 PM

I found this:
http://www.faqs.org/rfcs/rfc894.html

http://www.ieee.org/portal/site/main...sl=generic.xsl

1010011010 · 12-04-2004, 12:06 PM

The first of HogansGoat's links has the information originally asked for since 802.11 is essentially about the wireless implementation of 802.3.

"The minimum length of the data field of a packet sent over an Ethernet is 46 octets."
"The [maximum] length of the data field of a packet sent over an Ethernet is 1500 octets."

11-28-2004, 06:19 PM	#1 (permalink)
the420star Psycho Location: Cow Country, CT	Question about 802.11 wireless networks Does anyone know what the standard packet length is, its really hard to explain why i need to know, but it comes down to i need to know how long the shortest transmit cycle is. Even better would be if somone could point me to a page with this information on it. __________________ No, they arnt breasts, they are personalities, because its ok to like a girl for her personalities.

11-29-2004, 04:15 PM	#2 (permalink)
1010011010 Psycho Location: Virginia Beach, VA	http://www.sss-mag.com/pdf/802_11tut.pdf I don't think you mean 802.11, though. The actual specification for 802.11 and it's actually useful derivatives are available from IEEE.org. __________________ *Simple Machines in Higher Dimensions*

11-29-2004, 05:05 PM	#4 (permalink)
scott_p_1 Crazy	Checking my Networking notes, an 802.11 frame is 2346 bytes total maximum (including headers and trailers). The frame body is 2312 byes max Last edited by scott_p_1; 11-29-2004 at 05:43 PM..

12-03-2004, 06:04 PM	#6 (permalink)
HogansGoat Upright	I found this: http://www.faqs.org/rfcs/rfc894.html http://www.ieee.org/portal/site/main...sl=generic.xsl Last edited by HogansGoat; 12-03-2004 at 06:13 PM..

12-04-2004, 12:06 PM	#7 (permalink)
1010011010 Psycho Location: Virginia Beach, VA	The first of HogansGoat's links has the information originally asked for since 802.11 is essentially about the wireless implementation of 802.3. "The minimum length of the data field of a packet sent over an Ethernet is 46 octets." "The [maximum] length of the data field of a packet sent over an Ethernet is 1500 octets." __________________ *Simple Machines in Higher Dimensions*

11-29-2004, 04:38 PM	#3 (permalink)
Mephisto2 Junkie	the420star, Can you provide a more accurate description of what exactly you need to know. There's no such thing as a standard packet size when talking about 802.11 networks. Packets is the term used to refer to IP and is associated with the Network Layer. IP packets can be of varying size (the maximum "normal" size being 1512) - check out http://www.cisco.com/warp/public/105/38.shtml 802.11 standards refer to the Data Layer. Information in this layer is sent in frames. Check out the two following white papers. They may be of some help. A Technical Tutorial on the 802.11 standards - http://www.sss-mag.com/pdf/802_11tut.pdf *Wireless Local Area Networks and the 802.11 Standards* - http://www.cisco.com/warp/public/784...whitepaper.pdf You may also want to check out the following web-site on Ethernet frame types: http://www.neurobit.com/ethernet_frame_types.htm Mr Mephisto

12-03-2004, 01:01 AM	#5 (permalink)
ratiocination Tilted	I use 802.11 BG network on Intel PRO wireless 802.11 BG card . You can learn more about these networks at http://www.homenethelp.com/802.11b/index.asp What do you mean by packets? I am not an expert at this, but I think that the size of the packets can vary. It depends on the information that is being sent or received.