On Thu, Nov 10, 2011 at 10:37 AM, snan4love <snan4love@hotmail.com> wrote:

First of all,i have to say sorry,i know this topic maybe not related to FR.But I guess here is the best place to find out the answer.

No, it's not

Enviroment: Fedora 14 + 2 AP(set to WPA_PSK). On the Fedora 14,i use wpa_cli to switch from one wireless network to another,during the handover,there will 10 PING packets be lost.right now ,i hope i could find a way to calculate the accurate handover time? Is there any way to do this?

No idea

any suggestion will be really appreciate.

BTW, is FR be helpful in roaming between wireless network? Or,all the roaming work should be done in the terminal ?(lile laptop)

AFAIK the only way that FR might be related is that if it sends Session-Timeout, and the NAS honors it. And even then it'd not be directly related to roaming. It'd only tell the NAS to cut off the session after a period of time. At that time the wireless client will (usually) scan for AP with best signal and authenticate, possibly causing roaming if it changes BSSID. Somewhat off-topic note, I found out that when multiple APs with same SSID available, my Ubuntu laptop will often do disconnect-scan-connect routine, losing connection in the process, even when it ended up connecting to the same AP in the end. I ended up creating a configuration (using network-manager) that will forcefully connect to a particular BSSID only, effectively disable roaming. -- Fajar