<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META content="MSHTML 5.00.3700.6699" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I have a couple of queries related to PRISM chipset
based HostAP Device driver.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>a) While referring to </FONT><FONT
face=Arial size=2>"Intersil's PRISM Driver Programmers Manual" I was confronted
with the "Concept of Logical MAC Ports". These ports range from 0 to
6. It is </FONT></DIV>
<DIV><FONT face=Arial size=2> mentioned in a cryptic way that
Port Number 0 is for Connection to BSS and Port number 1-6 are for AP
functionality. When searched on the web there
were some </FONT></DIV>
<DIV><FONT face=Arial size=2> references, where it is
mentioned that transmission/reception can be controlled for these
individual logical ports. It is also mentioned that these ports can be
used for </FONT></DIV>
<DIV><FONT face=Arial size=2> creating wireless distribution
system (WDS) links. For each of these links, transmit rate, fragmentation
threshold, RTS Threshold can be set.<BR><BR></FONT><FONT face=Arial
size=2> I was wondering if I could seek some clarify on what
these logical MAC Ports are for and whether they have been explored or
alternatively is there a scope for exploring the same in
the </FONT><FONT face=Arial size=2>HostAP </FONT><FONT face=Arial
size=2>driver. </FONT><FONT face=Arial size=2>Current HostAP
implementation seems to operate MAC Port 0 only.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>b) There seems to be a conversion from 802.3
frames to 802.11 frames when transmitting a packet and vice versa on
reception. Is this a mandatory requirement of some </FONT></DIV>
<DIV><FONT face=Arial size=2> standard or is it the
implementer's choice? Is there any benefit we get by this translation as
against directly framing a 802.11 frame from the IP packet received from
</FONT></DIV>
<DIV><FONT face=Arial size=2> higher layers?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>c) Are there any vendor specific device driver
manuals for 802.11b cards available e.g. Device Driver manual for 802.11b
WLAN cards from say US Robotics or
from </FONT></DIV>
<DIV><FONT face=Arial size=2> Compaq or Netgear?
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I would appreciate if you could throw some pointers
to these.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Miss. Gargi Dadhich<BR>Member Technical
Staff<BR>Networking and Internet Software Group (NISG)<BR>C-DAC,
Pune</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Tel:
020-25694000/1/2/3 Extn: 484 <BR>Fax:
020-25694059 <BR></FONT></DIV></BODY></HTML>