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Does the watchdog really reset these nodes when robin hangs?

 
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brecklandit
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PostPosted: Sun Apr 10, 2011 10:53 pm    Post subject: Does the watchdog really reset these nodes when robin hangs? Reply with quote

I have just signed of an install of 38 units into a block of flats - i normally use the EOC range (M35 in this instance) but do have the occasional lock up. As this will be in 3rd party apartments, i can't ask the users to reboot the nodes.

Does the watchdog really pick up when robin has died and reboot the nodes, ie, can anyone confirm that these units should work 24/7/365 with the latest builds?

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codyc1515
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PostPosted: Mon Apr 11, 2011 6:30 am    Post subject: Reply with quote

It is my understanding that the node has a chip that will reboot the node after every 5 minutes if it does not receive a signal from robin not to. Therefore, if robin locks up, it wont send the signal, and the node will reboot.

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brecklandit
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PostPosted: Mon Apr 11, 2011 7:30 am    Post subject: Reply with quote

Thanks Cody,

Ill purchase a couple and see how they go - its just a shame they are so low powered, if only there was a 600mw version!

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brecklandit
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PostPosted: Tue Apr 12, 2011 10:44 am    Post subject: Reply with quote

Wow, the cute little blighter turned up today. Very impressed with the unit, will make a great unit for installation into flats etc.

What is the most powerful unit in terms of CPU to use as a gateway unit when feeding 5-6 repeaters ( each repeater could have 3-5 users). Or does the gateway not get much of hit?

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robgmann
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PostPosted: Tue Apr 12, 2011 5:17 pm    Post subject: Reply with quote

Near as I can tell, all the b/g generation of OM1P, Engenius and Ubiquiti run 180MHz CPUs.
The M-series and Engenius Ns (I think it's Atheros 7xxx) use a 400MHz CPU which I would assume helps out at a gateway. Unfortunately RobinV2 is not at all stable at the moment.
The Engenius model that Mike BB is using for Open-Mesh NG has dual CPUs and sounds like a winner. However, you'd have to run OM NG.
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codyc1515
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PostPosted: Wed Apr 13, 2011 1:03 pm    Post subject: Reply with quote

robgmann wrote:
The Engenius model that Mike BB is using for Open-Mesh NG has dual CPUs and sounds like a winner. However, you'd have to run OM NG.

and the drivers are only available closed-source. So no chance of running robin realistically.

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reverged
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PostPosted: Wed Apr 20, 2011 4:54 am    Post subject: Reply with quote

codyc1515 wrote:
It is my understanding that the node has a chip that will reboot the node after every 5 minutes if it does not receive a signal from robin not to. Therefore, if robin locks up, it wont send the signal, and the node will reboot.


This is correct and more. Robin runs a script on a cron task that checks lots of things like memory usage, captive portal, where am I, what is the phase of the moon, etc. Software reboots on errors.

In the OM1P, there is a separate hardware watchdog cron task on a 3 minute timer. If this fails, the device will hardware reset after approx 5 minutes.

Between the 2, things are well covered. Not 100% uptime, but possibly 100% auto recovery.

I can attest to 100's of OM1P's in the field, Robin and OpenWRT, and never having to truck roll for a lock up. I would rather put in 2 of these than 1 higher power radio.
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brecklandit
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PostPosted: Wed Apr 20, 2011 12:22 pm    Post subject: Reply with quote

reverged wrote:
codyc1515 wrote:
It is my understanding that the node has a chip that will reboot the node after every 5 minutes if it does not receive a signal from robin not to. Therefore, if robin locks up, it wont send the signal, and the node will reboot.


This is correct and more. Robin runs a script on a cron task that checks lots of things like memory usage, captive portal, where am I, what is the phase of the moon, etc. Software reboots on errors.

In the OM1P, there is a separate hardware watchdog cron task on a 3 minute timer. If this fails, the device will hardware reset after approx 5 minutes.

Between the 2, things are well covered. Not 100% uptime, but possibly 100% auto recovery.

I can attest to 100's of OM1P's in the field, Robin and OpenWRT, and never having to truck roll for a lock up. I would rather put in 2 of these than 1 higher power radio.


Thanks for the feedback.

Im well impressed, however, i tend to do a lot of outoor free wifi installs, and the higher power units really help. I can get a 600mw unit, with 8db omni for under the cost of an OM1P. Cost not being the issue, but one 600wm with an 8db or 15db covers a huge area - although I will have to try out an OM1p with a 15DB and see the results before making my mind up.


That said, im going to install OM1P's for all internal situations now unless I really need the enhanced coverage.

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