I've got it working now :-)
David Kempe wrote:
<snip>
that looks like it works. 220.101.10.1 look slike an unwired dhcp server.
perhaps the data logger can't handle tne public ip.
I thought of that option too and went looking for hosts.deny settings
etc, but then I figured it out :-)
Turns out there are two issues, as Martin suggested there is a problem
at the hardware level between the data logger and the unWired modem, I
put a 10Mb hub between them but at first that didn't fix it. Then
re-reading my posting....
"The unwired device responded with a BOOTP/DHCP Reply.
Why the logger didn't take it I don't know."
Answer! Because the latency on the unwired connection meant that the
logger had given up before the unWired dhcp server responded. The dhcpcd
command on the data logger was;
/sbin/dhcpcd -t 5 eth0
I changed it to -t 15 and volia!
The unwired doco on signal strength says, green==excellent,
yellow==very-good, red==good, blinking-red==no-signal.
But actually red == "you'll be droping at least 10% of your packets and
the latency could be as much as 2000ms!"
Anyway they talk to each other via the hub now, just have to figure out
what is incompatible with the hardware ethernet ports. (no it's not a
cross over cable, looks more like some sort of 10/100/full duplex issue).
Also just for everyone's info, I'd been on the phone to unWired and the
techie confessed that their dhcp server was running on Fedora Core 1. So
linux is everywhere. Once I had that info I was determined to get it to
work. ;-)
i think the unwired addresses are tied to each modem statically, so
perhaps you can just try the same static address on the logger and
forget about dhcp? as long as you duplicate its affect you shouldn't
need it.
Yeah I had tried this line of thinking also also but just for the
record, that's not true. The unWired IP does in fact change, I saw a
number of different IP's handed out to the same modem. Unwired don't do
fixed / static ip's at all according to the Techie. Apparently Chillie
iBurst do, but it'll cost ya an extra $11/month.
Thanks for all your help,
Pete.
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