On Mon, Dec 12, 2011 at 4:10 PM, <[email protected]>wrote:
> On Mon, Dec 12, 2011 at 12:53:38PM -0800, Guy Harris wrote: > > > > Will I ever see HT40+,40- in case of beacons. > > > > Probably not. > > > > > > Ok. So, there is nothing as a N beacon.. > > > Only advertisements at 1,6 rate and then actual data at N speed. > > > > Right. The beacons will generally be transmitted at low speed, so even > older stations can see them. > > About the only time you'll see beacons on non-basic rates is a > greenfield deployment, of which I've *never* found one in the wild > despite all the manufacturers caring about it. > > Lets see > Also under linux you will need to tune explicitly to CH+ or CH- to get > 40mhz data packets, they will be silently ignored on just CH. This > means you must use netlink to set the channel as siochannel can't > understand HT+ and HT-. > > Is CH+,CH- synonymous to HT+,HT-. I havent come across these terms as of now. iw talks about HT though > I don't recall offhand if you'll still see basicrate packets on CH+ or > CH- settings. > > Sniffing 11n in linux is a big mess. > > Any specific reason why? Abhinav - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
