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tombrdfrd66
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Location: New Zealand

nstream puzzle

Wed Mar 21, 2012 10:56 am

Here are some log entries that baffle me.

From the client:

20:23:25 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : failed to connect, on 5785, authentication timeout
20:23:57 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : established connection on 5785, SSID Sadie
20:23:59 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : lost connection, not polled for too long
20:24:00 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : established connection on 5785, SSID Sadie
20:24:02 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : lost connection, not polled for too long
20:24:07 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : failed to connect, on 5785, authentication timeout
20:24:21 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : failed to connect, on 5785, authentication timeout
20:24:59 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : failed to connect, on 5785, authentication timeout
20:25:09 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : established connection on 5785, SSID Sadie
20:41:50 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : lost connection, extensive data loss
20:41:55 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : failed to connect, on 5785, authentication timeout
20:42:06 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : established connection on 5785, SSID Sadie
20:42:08 wireless,info Raingauge: 00:0C:42:xx:xx:xx@Waiket : lost connection, not polled for too long

This is a point-to-point link with RB433AHs at each end running RouterOS v5.14.

What puzzles me is that the link is new with both ends set for default security profile and default authentication. So what's with the authentication time-out?

And the link is running with nstream, polling turned on and CSMA not disabled which appears to be the default setting with nstream selected.

Signal strength seems stable at around -80dB and SNR around 26.

Any ideas?

I'm thinking I don't need CSMA on a point-to-point link but some contributors to the forum suggest leaving it on anyway. I'm also surpised that polling is enabled by default in nstream as I thought nstream contained its own TDMA, but even with it on it seems to cause problems although as it's the default I'm loath to turn it off.
 
lazerusrm
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Joined: Sat Jan 29, 2011 7:56 am

Re: nstream puzzle

Tue Mar 27, 2012 7:14 am

You're either running into interference, or low signal issues. or a combination of the two.

Run a Spectral-History / Spectral scan either with the dude or in winbox, and verify that the channel you are attempting to use is clean. if not, try different channels, or a smaller channel width and

retry.

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