And that's so basic, it's really the most useful watchdog, IMO. Many times I've been able to get a ping response from a piece of equipment yet it's still not functioning. Thus, it still needs to have a visit even though it pings just fine. And as a wonderful coincidence, I had one just like that this morning..... A bullet onto of a nice frozen silo. Fun.
Bob- -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Tom Sharples Sent: Sunday, December 20, 2009 12:31 PM To: WISPA General List Subject: Re: [WISPA] Ubiquiti ready for prime time? A hardware watchdog timer, typically, watches only one thing - is the software and/or CPU still alive? If a software pinger fails to reset a hardware counter or timer every few seconds or so, the timer reaches the end of its count and resets the motherboard. It is a failsafe if everything else goes wrong - something that happens more often than one would like when you're using developmental drivers. Software watchdogs are a poor substitute for obvious reasons - if the software or CPU is completely hung, the software watchdog won't work either! Tom S. ----- Original Message ----- From: "Mark Stephenson" <m...@countryconnections.net> To: "WISPA General List" <wireless@wispa.org> Sent: Sunday, December 20, 2009 4:12 AM Subject: Re: [WISPA] Ubiquiti ready for prime time? > Tom, > > Do you happen to know what a hardware watchdog timer watches? Perhaps > there > is something it can watch like whether or not the device is sending on the > Ethernet port or the program counter. But, it seems that as embedded > systems > add more software, a useful hardware watchdog timer becomes less possible > because there are more things that can go wrong and it is > difficult/expensive to make the hardware capable of checking those things. > > Thanks, Mark > > > On 12/20/09 2:01 AM, "Tom Sharples" <tsharp...@qorvus.com> wrote: > >> A software watchdog timer is not the same thing as a hardware watchdog >> timer. >> And SNMP has nothing to do with either. >> >> Tom S. >> >> ----- Original Message ----- >> From: jai...@budget.net >> To: Tom Sharples ; WISPA General List >> Sent: Saturday, December 19, 2009 9:03 PM >> Subject: Re: [WISPA] Ubiquiti ready for prime time? >> >> >> Please don't take me wrong on this but your statement (b) bothers me. >> You >> are either running a very old version of Air OS or you have no clue what >> your >> talking about. UBNT has support for SNMP which I use to monitor not only >> uptime but signal strength and a few other key items check out ZenOss if >> you >> need to watch these devices or any other network device for that matter. >> AirOS >> also has a "Watchdog timer" in the software that will automatically >> reboot a >> device that fails a ping time you set. I have never had to power cycle a >> UBNT >> device. In fact I had to reboot a Mikrotik router because it had a locked >> process in the packet sniffer application that drove the CPU to 100% so >> the >> UBNT gear has a higher uptime than the core router. >> >> Jaimie >> >> >> On Sat 12/19/09 12:24 PM , "Tom Sharples" tsharp...@qorvus.com sent: >> >> My biggest concern with these units is (a) lack of mechanical >> robustness - >> little plastic bits leak or break off quite easily and (b) lack of a >> hardware watchdog timer which personally I think is essential esp. >> when >> you're using "development stage" firmware. We did most of the work to >> port >> our Qcode to run on the ubnt platform, but have decided to shelf that >> project for another year, waiting for things to really settle down. >> In the >> CCTV business, there's no-one around to power-cycle the equipment and >> unrecoverable device hangs are really a disaster. I realize that the >> ISP >> business is a little different because the customer can always reboot >> the >> CPE! >> >> Tom S. >> >> ----- Original Message ----- >> From: "Robert West" <robert.w...@just-micro.com> >> To: <jai...@budget.net>; "'WISPA General List'" <wireless@wispa.org> >> Sent: Saturday, December 19, 2009 7:55 AM >> Subject: Re: [WISPA] Ubiquiti ready for prime time? >> >> >>> I'm with ya on all that, Jamie. We've had minor issues but I expected >>> things to not be perfect, they never are with version 1.0! The trade off >>> is >>> worth it, for me anyhow. >>> >>> Bob- >>> >>> >>> -----Original Message----- >>> From: wireless-boun...@wispa.org [wireless-boun...@wispa.org] On >>> Behalf Of jai...@budget.net >>> Sent: Saturday, December 19, 2009 10:26 AM >>> To: WISPA General List >>> Subject: Re: [WISPA] Ubiquiti ready for prime time? >>> >>> >>> We use all UBNT and I have been very happy with the equipment. >>> Tower has 2 Rocket M5s With 120 sectors, backhaul is Rocket M5s with >>> the Rocket Dish. CPEs are Nano M5. Durring testing at 4 Miles with >>> CPE to AP I was able to sustain symmetrical speeds of 75M to our >>> test server on the other end of the backhaul. I was really amazed at >>> how well they preformed for the price. I have read all the horror >>> stories in the UBNT forums but have yet to have one problem. Probably >>> just cursed myself and should of kept my mouth shut. But so far so >>> good. >>> On Sat 12/19/09 6:35 AM , Mike m...@aweiowa.com sent: >>> I was almost ready to pull the trigger on some Ubiquiti equipment >>> for >>> a new project. The scent of low price is alluring. Then I start >>> reading about connectors pulling out, connectors not soldered on >>> properly, and the wrong boot code on boards. >>> Is it too early? Should I wait a bit before I dive in? Has the >>> haste to get product into the distribution stream compromised >>> quality >>> control? Is the low price just too good to be true? I'd be >>> interested in some constructive thoughts and analysis. >>> Thanks mg >>> >>> ---------------------------------------------------------------------------- >>> ---- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/";>http://signup.wispa.org/ >>> >>> ---------------------------------------------------------------------------- >>> ---- >>> WISPA Wireless List: wireless@wispa.org [2] >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless";>http://lists.wispa.org/mai l >>> man/listinfo/wireless >>> Archives: >>> http://lists.wispa.org/pipermail/wireless/";>http://lists.wispa.org/pipermail / >>> wireless/ >>> >>> >>> Links: >>> ------ >>> [1] http://signup.wispa.org/";>http://signup.wispa.org/ >>> [2] wireless@wispa.org >>> [3] >>> http://lists.wispa.org/mailman/listinfo/wireless";>http://lists.wispa.org/mai l >>> man/listinfo/wireless >>> [4] >>> http://lists.wispa.org/pipermail/wireless/";>http://lists.wispa.org/pipermail / >>> wireless/ >>> >>> >>> ---------------------------------------------------------------------------- >>> ---- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/";>http://signup.wispa.org/ >>> ---------------------------------------------------------------------------- >>> ---- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless";>http://lists.wispa.org/mai l >>> man/listinfo/wireless >>> >>> Archives: >>> http://lists.wispa.org/pipermail/wireless/";>http://lists.wispa.org/pipermail / >>> wireless/ >>> >>> >>> >>> ---------------------------------------------------------------------------- - >>> --- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/";>http://signup.wispa.org/ >>> ---------------------------------------------------------------------------- - >>> --- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless";>http://lists.wispa.org/mai l >>> man/listinfo/wireless >>> >>> Archives: >>> http://lists.wispa.org/pipermail/wireless/";>http://lists.wispa.org/pipermail / >>> wireless/ >> >> >> >> ---------------------------------------------------------------------------- -- >> -- >> >> >> >> No virus found in this incoming message. >> Checked by AVG - http://www.avg.com";>www.avg.com >> Version: 8.5.427 / Virus Database: 270.14.114/2574 - Release Date: >> 12/18/09 >> 19:38:00 >> >> >> >> >> ---------------------------------------------------------------------------- -- >> -- >> WISPA Wants You! Join today! >> http://signup.wispa.org/";>http://signup.wispa.org/ >> >> ---------------------------------------------------------------------------- -- >> -- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> >> http://lists.wispa.org/mailman/listinfo/wireless";>http://lists.wispa.org/mai lm >> an/listinfo/wireless >> >> Archives: >> http://lists.wispa.org/pipermail/wireless/";>http://lists.wispa.org/pipermail /w >> ireless/ >> >> >> >> >> ---------------------------------------------------------------------------- -- >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 8.5.427 / Virus Database: 270.14.115/2576 - Release Date: >> 12/19/09 >> 19:40:00 >> >> >> ---------------------------------------------------------------------------- -- >> -- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> ---------------------------------------------------------------------------- -- >> -- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > ---------------------------------------------------------------------------- ---- > WISPA Wants You! Join today! > http://signup.wispa.org/ > ---------------------------------------------------------------------------- ---- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ ---------------------------------------------------------------------------- ---- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.427 / Virus Database: 270.14.115/2576 - Release Date: 12/19/09 19:40:00 ---------------------------------------------------------------------------- ---- WISPA Wants You! Join today! http://signup.wispa.org/ ---------------------------------------------------------------------------- ---- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
