Hi:
I also found this problem. WinPcap can't capture packets
by some 802.11b adapters (like Cisco Aironet 350
series, Intel PRO/Wireless 2011B PC card ... etc) on WLAN,
but it can work on Avaya wireless PC GOLD card and
3com wireless PC card. Although Avaya and 3com crads can work,
packets captured are all in 802.3 ethernet MAC frame format,
not in 802.11b MAC frame format. It is like simulating an ethernet
environment on the WLAN.
I work on WinXP platform. Does anyone tell me why?
Thanks a lot!!!
Best Regards,
Tim
----- Original Message -----
From: "Magnus Olsson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, June 07, 2003 2:29 AM
Subject: Re: [WinPcap-users] PacketGetNetType
> Thanks for the help, I solved it on my own, it turned out to be a coding
> error from my side, really
> sorry about this ;)
>
> I can however inform anyone who is interested that
> 1) PacketGetNetType() works just fine on WinXP using my Orinoco wireless
> PC Silver card
> 2) The link speed DOES change, so there is no need to re-init the pcap
> adapter, by simply calling
> PacketGetNetType() again will get you a correct value.
> 3) I'm using WinCap 3.0 (latest available from the winpcap homepage).
>
> Loris Degioanni wrote:
>
> >Hi,
> >
> >
> >
> >
> >>I'm having problem with the PacketGetNetType() function of Packet.dll. I
> >>realize this isn't part of the WinPCap libs, but at least WinPCap
> >>depends on them.
> >>
> >>I call PacketGetNetType() and the LinkSpeed is ALWAYS
> >>100000000 (100 mbps), which isn't true. I've tried these on
> >>several machines, 1 with 100 mbps, 1 with 10 mbps card and
> >>1 with a WLAN card (11 mbps). They all report 100 mbps.
> >>
> >>
> >
> >Which OS/WinPcap version are you using?
> >
> >
> >
> >>Am I doing something wrong or is this a known bug in the packet
> >>routine?
> >>
> >>Also, I would like to know if this routine is cached anyway? I want
> >>to use it to graph the linkspeed of my WLAN card where the speed
> >>varies, so if I call PacketGetNetType(), will I have to "re-open" the
> >>pcap object before each call? I was thinking maybe the linkspeed was
> >>simply put into a private variable at init and then simply returned from
> >>that when you call PacketGetNetType()
> >>
> >>
> >
> >PacketGetNetType retrieves that value from the NIC driver by means of an
OID
> >call mediated by the packet driver.
> >I think that you shouldn't need to reopen the handle, but I never tried
and
> >this could depend on the particular NIC.
> >
> >Loris
> >
> >
> >
> >>Any help is appreciated, thanks in advance!
> >>
> >>
> >>
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>
>
>
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