> From: [email protected] [mailto:[email protected]] > On Behalf Of David Lang > > why does the movement of users matter much?
If you associate to an AP because it's the closest to you, and then you move away from it, your computer has to "scream louder" so the AP can hear it. And vice-versa. Your connection drops from 54 Mbit to 11 Mbit (for example) and you're screaming at the loudest you can scream, so everybody else using the air must go as slow as you are, waiting to use the air in between your long and slow and loud breaths. If the AP's support roaming, then you comfortably and seamlessly reassociate to whichever one is more reasonable for you to talk to. Beam forming is quite a bit better. But you don't get beam forming in cheap hardware. If your AP's don't support roaming but you are forced to reassociate due to lost connection with the original AP, then all your active connections get reset. This doesn't happen terribly often, but it means restarting file transfers, ssh sessions, etc. (Most phone calls are safe, because they typically run over UDP). > Also, why do you say 'low traffic volumes'? if you are encrypting the data, > it's > going to cost to encrypt it even if you do it at the wifi level instead of the > VPN level. Even if you encrypt/decrypt 1 Gbit/sec continuously, it's well within the compute limitations of a single core of a slow modern processor. (I measured this using a Core i5, and achieved 30-40% utilization of a single core). _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
