Dave Hart <daveh...@gmail.com> wrote: > On Wed, Dec 28, 2011 at 21:54, David Malone > <dwmal...@walton.maths.tcd.ie> wrote: >> Modern hardware that supports 802.11e (or 802.11n, which requires >> much of the QoS part of 11e) can control things like the number of >> retries, and you could hack the driver to inspect the packets and >> if it is NTP to reduce the number of retires. > > I recognize I'm suggesting a layer violation in wishing 802.11 devices > treated UDP differently from TCP, or even worse in terms of layer > violation, UDP 123 differently from UDP 53. It's not pretty, but it > would make a positive difference. The ideal number of retries for NTP > may be zero, assuming the radio layer loss rates are less than 87.5% > in practice.
When NTP wants special treatments of its packets, it should set the TOS/DiffServ field, e.g. to LOWDELAY or EF. Of course when that IP traffic is sent over untagged (not 802.1q) ethernet that information is lost anyway. But a directly connected 802.11 device could possibly look at it. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions