We will be reinitializing and re-securing our main gateway router tonight, in an attempt to correct some strange observed behavior on its part that may possibly be due to either corruption or infiltration. We hope this may also relieve some of the prime-time slowdown behavior we’ve encountered within the past month or so.
We expect our connection to the Internet to be interrupted for about 30 minutes sometime within the window of 01:00 to 02:00 tonight (Sunday morning the 30th). As always, our recorded message at 623-640-7883 will be kept updated for you to verify the status of our network.
We will be replacing the aging and increasingly problematic service radio atop Downtown Tower late tomorrow morning (Wednesday 10/10) with a new and faster unit. Expect an outage of 10-15 minutes as the old unit is unbolted and the new unit secured. This outage will affect only users served directly by Downtown Wickenburg Tower — subscribers served by all other towers will be unaffected.
We’re experiencing an issue with some of our towers in which the speed to subscribers degrades as equipment uptime increases. Towers identified so far have included Skip-In Ranch Tower, Downtown Tower, and all three APs on Morristown Tower. In all cases, power-cycling the radio unit restores full performance.
Our equipment manufacturer, MikroTik, suspects a memory leak in their OS, and has asked us to provide them with diagnostic dumps from the affected equipment, which we are in the process of assembling for them today.
While we wait for a response from MikroTik, we’ll be setting up an automatic powercycle schedule on the affected towers. This will result in an approximately four-minute interruption of service between 2:00-4:00 AM several times each week at these towers. We hope to have this periodic refresh cycle operational by Monday.
This morning’s trunk cutover failed to take place, with CenturyLink making the attempt to switch circuits but ultimately delivering no traffic. Next-tier engineers at CenturyLink are scheduled to be diagnosing the issue, and we’ll be setting up a new cutover time once they inform us they have the problem figured out.
Tomorrow morning (Thursday, August 23), between 6:00 and 7:30 AM, CenturyLink will be moving our gateway service (our trunk connection to the greater Internet) onto a different fiber link. We expect an outage blip of about 15-30 seconds during that time period, barring complications. If complications occur, we will revert to the original fiber link as expeditiously as possible and reschedule the cutover. We regret the short notice, but we received this scheduling information only this morning.
This Wednesday (7/18) around mid-day, we’re going to be upgrading the power supply and power cabling at Mockingbird Tower. We’re going to continue running on the existing cabling until we get everything laid out and ready to go, at which time we’ll cut over to the new power feed. If everything goes as planned, there will be no interruption in tower service at all; if it doesn’t, subscribers served directly by Mockingbird Tower might experience at most a two-minute outage as the tower resets. (No other subscribers will be affected by this maintenance.)
Part of the upgrade includes a battery backup system designed to be able to operate the tower for over an hour, to ride out any short-term monsoon-induced power outages that may affect Mockingbird Hill. In addition, relieving our power crunch on this tower should also help improve speeds to our Rio Vista tower subscribers.
Recently, we determined that our Downtown Wickenburg Tower was exhibiting impaired performance depending on how long it was continuously operational. While awaiting the manufacturer’s diagnosis, we put a script in place to reboot this unit in the wee hours every four days, to keep it operating at peak.
The manufacturer replied today with the suggestion that reinitializing the unit from scratch should return it to proper operation. We’ll be performing this procedure around noon on Tuesday (tomorrow). This will result in a service outage of 10-15 minutes, which will affect only users directly served by Downtown Tower. We hope this will result in improved performance for our Downtown subscribers.
We’ve determined from subscriber feedback and subsequent testing that the east sector of Morristown Tower is not functioning properly and is delivering insufficient bandwidth. We’ll be replacing that unit Wednesday morning sometime between 9:15 and 10:30. This will involve an outage of 10-15 minutes, that should affect only Morristown Tower subscribers east of the 267th Avenue alignment.