In message <cagnrvupwf3n9jqmi_txwbxketo_59zdqqapcfcsyfduvqp8...@mail.gmail.com> Henning Rogge writes: > On Wed, Feb 25, 2015 at 9:36 PM, Curtis Villamizar > <[email protected]> wrote: > > In message <[email protected]> > > Juliusz Chroboczek writes: > >> As to wireless links -- as far as I'm aware, making efficient use of > >> wireless L2 information in a routing protocol is an open research problem. > > > > Other than signal strength and collision rate, what L2 information is > > available? Per MAC information would be nice for the AP side or any > > node in mesh or adhoc mode but that isn't collected anywhere AFAIK. > > Raw linkspeed and (on Linux) even Throughput to each neighbor... and a lot > more. > > Just run "iw wlan0 station dump" on a Linux system with wifi and you > will be surprised how much information you will get. > > Henning Rogge
Henning, How can a router make use of throughput to a mostly idle neighbor? How do you get packets sent to a neighbor that dropped or packets that a neighbor sent to you that didn't arrive here? Raw link speed or packet and byte counts don't by themselves tell you much. The equivalent of PPP LQM or MPLS-TP LM OAM would be the sort of thing needed is you didn't want to use BFD with a high probe rate. As I said above (or tried to say), the most useful hints that the link isn't as good as nominal link speed might indicate might be signal strength and collision rate. [What I meant above by "available" was available and useful for "making efficient use of wireless L2 information in a routing protocol" in the quoted text. So maybe I was too terse in saying that.] Thanks for the response though. I use FreeBSD and other than rate and S/N there isn't much, so could you send me sample output from a Linux host or better yet a Linux AP with a few "neighbors". We can take this off list and discuss the sample output but so far "lots of stuff" (sic) doesn't help. Curtis ps - maybe I should stop procrastinating and compile and flash openwrt and see for myself, but for now ... _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
