Hi folks,
I’ve got a slew of PMP100 gear on 2.4 GHz and 900 MHz, running a mix of 9.5 and 11.0.1 depending on where you are. Both firmwares are on both equipment.
In troubleshooting a bunch of reboots, there appears to be a correlation with NTP and system resets. APs running NTP back to their default gateway (a Cisco router) seem to reboot every so often, sometimes multiple times per day. The weirdest part is that all of them set up like that will reboot at the same time (a 2.4 on 11.0.1 reset at the same time as a 900 on 9.5 100 KM away on a different network segment). APs that do not have NTP configured, and still think that it’s 2001, do not have this issue.
Anyone ever run in to this before? For troubleshooting I’m changing the NTP source on several APs and seeing if anything changes.
Thanks
Ross
All our gear Canopy gear is 10.5 except for a few backhauls still running 7.3.6.
They all get their NTP from the closest CMMmicro, we have not seen any issue with NTP causeing reboots.
I thought I heard somewhere that Moto’s NTP for the radios was a little different then the norm and it didn’t play nice with standard NTP servers.
But I could be wrong, it’s been a long time.
Funny you posted this just today. I set a variety of NTP servers across many APs and let it soak for a week or so.
Here are my results using various time sources:
Cisco 6509: Random reboots
No NTP: Stable
CMM Micro 3.1: Stable
NTP Server: Stable
The funny thing is that the NTP server aggregates NTP from a few pool.ntp.org sources as well as all of our CMMs - and this is what the Cisco 6509 feeds off of. Very strange.
Strange indeed. But good to know.
We like keeping things simple around here. We like having Moto devices talk to Moto devices for things like that, less surprises that way. 
Any other gear pulls their NTP from 3 NTP servers we have setup at stratigic locations around our network. This keeps NTP traffic localized so it doesn’t travel through-out enitre network for all of our devices in the field.
Brad
Sure, there’s simple and there’s simple. Previously my practice was to just use the default gateway as the NTP source. Worked everywhere I went Guess that changes…
Ya…I’m pretty simple when it really comes down to it.