Increasing the gateway monitoring interval
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I've had some problems recently with my XG-7100 which is connected to my Cox business class service. I have a set of static IPs from my ISP. A few weeks ago, I noticed my system resetting the gateway due to a monitoring failure. I had ISP out to my house, who did find some problems with the cabling and corrected it. When they left, they said the signal from outside to the cable modem was now clean. My problems persisted, and I had them back out again and they continue to say the signal is clean at this point.
When the tech was out the second time, I mentioned how the system was determining the gateway was up/down (using ping) and how often it was running. The tech mentioned that I should probably back that off, as their system upstream now load balances and my system may be detecting a failover when a node gets congested.
I'm still trying to do some testing on this, and have reduced the ARP cache interval on the unit to help with the failover. The other thing I'd like to try is backing off the monitoring of the gateway a tad. By default it appears to be pinging the gateway about every 500 milliseconds. I'd like to do the following:
Increase probe interval to 5 secs (5000 milliseconds), and the time period to 5 minutes (300000 milliseconds). I'm reading through the probe guidance under gateway -> advanced, and it's indicated that the alert interval should be greater than or equal to the probe interval.
Should the alert interval default to be greater? I notice that the default alert interval is 2x the probe interval. Not sure if that ratio should be maintained. Is there any better guidance on this?