I seriously doubt that piping it through slip is going to help. You still get to deal with slip + tcp protocol stack. I would expect gbit ethernet with possibly some fifo/buffering setting adjusted gets you better performance that RS232 (with or without slip). Just assemble some raw frames on the source side and go.
regards Fred ________________________________ From: Iain Young <[email protected]> To: [email protected] Sent: Sunday, October 23, 2011 11:28 AM Subject: [time-nuts] SLIP vs Ethernet for NTP Hi Guys, I have often heard it said that since RS-232 is more "deterministic", and suffers from less jitter, and uncertainties, than ethernet, that it makes a better medium for time distribution (no CDMA for a start). (Especially if you know how many bits you need to squirt over the RS-232 link at what baud rate) Since I am shortly going to have quite a few Srata 1 time sources, my first thought of just plugging them all into a switch, and then having an S2 box sat on the LAN, and distribute from there. And remembering the rules about RS-232 etc, the (possibly mad) thought of running SLIP or PPP over dedicated serial lines to link the Strata 1 boxes to the Strata 2 machine. (I can't connect all the Strata 0 devices to the same Strata 1 box, as there will be other processing being done on the GPS data using RTKLIB on a couple of them) To be honest, this is for nothing more than fun, and nothing critical (this is time *nuts* after all), although it may well mean I have less copper Ethernet hanging around working like tuned antennas, *and* wouldn't need to go fibre on quite so many machines! What are people's opinion and experience of doing such a thing ? Best Regards Iain _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
